Liquid crystal composition

文档序号：1343105 发布日期：2020-07-17 浏览：42次中文

阅读说明：本技术 液晶组合物 (Liquid crystal composition ) 是由栗泽和树小坂翔太于 2018-12-06 设计创作，主要内容包括：本发明的课题在于提供一种聚合性液晶组合物,其介电各向异性(Δε)为负,满足一般液晶组合物所要求的在宽广的温度范围下的显示、高速应答性及低电压驱动性,并且在形成液晶显示元件时,没有显示不良或显示不良极少,本发明的课题还在于提供一种液晶显示元件,其使用了该液晶组合物。一种液晶组合物,其介电各向异性(Δε)为负,含有：1种或2种以上的选自通式(N－1)、(N－2)及(N－3)所表示的化合物中的化合物；及1种或2种以上的聚合性化合物。(The present invention addresses the problem of providing a polymerizable liquid crystal composition which has negative dielectric anisotropy (Δ), satisfies display properties over a wide temperature range, high-speed response properties, and low-voltage driving properties required for general liquid crystal compositions, and has no or very few display defects when formed into a liquid crystal display element, and also addresses the problem of providing a liquid crystal display element using the liquid crystal composition. A liquid crystal composition having negative dielectric anisotropy (Δ), comprising: 1 or 2 or more compounds selected from the group consisting of compounds represented by general formulae (N-1), (N-2) and (N-3); and 1 or 2 or more polymerizable compounds.)

1. A liquid crystal composition having a negative dielectric anisotropy Δ, the liquid crystal composition comprising: 1 or 2 or more compounds selected from the group consisting of compounds represented by general formulae (N-1), (N-2) and (N-3); and 1 or 2 or more polymerizable compounds,

in the formula, R^N11、R^N12、R^N21、R^N22、R^N31And R^N32Each independently represents an alkyl group having 1 to 8 carbon atoms, 1 of the alkyl groups being non-adjacent and 2 or more-CH₂-optionally each independently replaced by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-or-OCO-,

A^N11、A^N12、A^N21、A^N22、A^N31and A^N32Each independently represents a group selected from the group consisting of the following (a), (b), (c), and (d):

(a)1, 4-cyclohexylene radical, in which 1-CH present in the radical₂-or non-adjacent 2 or more-CH₂-optionally substituted with-O-;

(b)1, 4-phenylene in which 1-CH ═ or non-adjacent 2 or more-CH ═ present in the group is optionally replaced by-N ═ or;

(c) naphthalene-2, 6-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl or decahydronaphthalene-2, 6-diyl, wherein 1-CH ═ or nonadjacent 2 or more-CH ═ in naphthalene-2, 6-diyl or 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl present is optionally substituted by-N ═ in the presence of naphthalene-2, 6-diyl; and

(d) a 1, 4-cyclohexenylene group,

the above-mentioned group (a), group (b), group (c) and group (d) are each optionally independently substituted with a cyano group, a fluorine atom or a chlorine atom,

Z^N11、Z^N12、Z^N21、Z^N22、Z^N31and Z^N32Each independently represents a single bond, -CH₂CH₂－、－(CH₂)₄－、－OCH₂－、－CH₂O－、－COO－、－OCO－、－OCF₂－、－CF₂O-, -CH-N-CH-, -CH-, -CF-or-C ≡ C-,

X^N21represents a hydrogen atom or a fluorine atom,

T^N31represents-CH₂-or an oxygen atom,

n^N11、n^N12、n^N21、n^N22、n^N31and n^N32Each independently represents an integer of 0 to 3, n^N11+n^N12、n^N21+n^N22And n^N31+n^N32Each independently is 1,2 or 3, in A^N11～A^N32、Z^N11～Z^N32When a plurality of them exist, they may be the same or different.

2. The liquid crystal composition according to claim 1, wherein the total content of the compounds is 50 to 95% by mass based on the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3),

the compound is: in the compounds represented by the general formulae (N-1), (N-2) and (N-3) contained in the liquid crystal composition, Z^N11And Z^N12At least one of them being a linking group other than a single bond, Z^N21And Z^N22At least one of which is a linking group other than a single bond, and Z^N31And Z^N32A compound in which at least one of the groups is a linking group other than a single bond.

3. The liquid crystal composition according to claim 1, wherein the total content of the compounds is 5 to 50% by mass based on the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3),

the compound is: z is selected from the compounds represented by the general formulae (N-1), (N-2) and (N-3) contained in the liquid crystal composition^N11、Z^N12、Z^N21、Z^N22、Z^N31And Z^N32A compound which is a single bond.

4. A liquid crystal composition according to any one of claims 1 to 3, which contains 1 or 2 or more compounds represented by the general formula (P) as the polymerizable compound,

in the general formula (P), R^p1Represents a hydrogen atom, a fluorine atom, a cyano group, a hydrogen atom, an alkyl group having 1 to 15 carbon atoms wherein the hydrogen atom is optionally substituted by a halogen atom, an alkoxy group having 1 to 15 carbon atoms wherein the hydrogen atom is optionally substituted by a halogen atom, an alkenyl group having 1 to 15 carbon atoms wherein the hydrogen atom is optionally substituted by a halogen atom, an alkenyloxy group having 1 to 15 carbon atoms wherein the hydrogen atom is optionally substituted by a halogen atom, or-Sp^p2－P^p2，

P^p1And P^p2Each independently represents formula (P)^p1-1) to formula (P)^p1Any one of the above-mentioned items-9),

in the formula, R^p11And R^p12Each independently represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a haloalkyl group having 1 to 5 carbon atoms, W^p11Represents a single bond, -O-, -COO-or methylene, t^p11Represents 0, 1 or 2, and a plurality of R exist in the molecule^p11、R^p12、W^p11And/or t^p11In the case of (A), they are the same or notIn the same way, the first and second electrodes are connected,

Sp^p1and Sp^p2Each independently represents a single bond or a spacer,

Z^p1and Z^p2Each independently represents a single bond, -O-, -S-, -CH₂－、－OCH₂－、－CH₂O－、－CO－、－C₂H₄－、－COO－、－OCO－、－OCOOCH₂－、－CH₂OCOO－、－OCH₂CH₂O－、－CO－NR^ZP1－、－NR^ZP1－CO－、－SCH₂－、－CH₂S－、－CH＝CR^ZP1－COO－、－CH＝CR^ZP1－OCO－、－COO－CR^ZP1＝CH－、－OCO－CR^ZP1＝CH－、－COO－CR^ZP1＝CH－COO－、－COO－CR^ZP1＝CH－OCO－、－OCO－CR^ZP1＝CH－COO－、－OCO－CR^ZP1＝CH－OCO－、－(CH₂)_z－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－(C＝O)－O－(CH₂)₂－、－CH＝CH－、－CF＝CF－、－CF＝CH－、－CH＝CF－、－CF₂－、－CF₂O－、－OCF₂－、－CF₂CH₂－、－CH₂CF₂－、－CF₂CF₂-or-C ≡ C-, wherein R is^ZP1Each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and a plurality of R's are present in the molecule^ZP1In the case of (a), they are the same or different,

A^p2represents 1, 4-phenylene, 1, 4-cyclohexylene, anthracene-2, 6-diyl, phenanthrene-2, 7-diyl, pyridine-2, 5-diyl, pyrimidine-2, 5-diyl, naphthalene-2, 6-diyl, indan-2, 5-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl or 1, 3-dioxane-2, 5-diyl, A^p2Unsubstituted or optionally substituted by an alkyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, a haloalkoxy group having 1 to 12 carbon atoms, a halogen atom, a cyano group, a nitro group or-Sp^p2－P^p2The substitution is carried out by the following steps,

A^p1is represented by (A)^p1－11)～(A^p1-19) a group represented by (a),

wherein at:, with Sp^p1Or Z^p1Bonding at a position to Z^p1Bonding, wherein 1 or more than 2 hydrogen atoms in the structure are optionally substituted by C1-12 alkyl, C1-12 haloalkyl, C1-12 alkoxy, C1-12 haloalkoxy, halogen atom, cyano, nitro or-Sp^p2－P^p2The substitution is carried out by the following steps,

A^p3is represented by (A)^p3－11)～(A^p3-19) a group represented by (a),

in the formula, at^p2Is bonded to R at^p1Or Z^p2Bonding, wherein 1 or more than 2 hydrogen atoms in the structure are optionally substituted by C1-12 alkyl, C1-12 haloalkyl, C1-12 alkoxy, C1-12 haloalkoxy, halogen atom, cyano, nitro or-Sp^p2－P^p2The substitution is carried out by the following steps,

m^p2and m^p3Each independently represents 0, 1,2 or 3, m^p1And m^p4Each independently represents 1,2 or 3, and a plurality of P's are present in the molecule^p1、Sp^p1、A^p1、Z^p1、Z^p2、A^p3And/or R^p1In the case of (2), they are the same or different.

5. The liquid crystal composition according to any one of claims 1 to 4, which contains 1 or 2 or more compounds represented by the general formula (SA L) as the polymerizable compound,

in the above formula, P^alRepresents a group represented by the general formula (P-I) to the general formula (P-IX),

Sp^alrepresents a single bond or a linear or branched alkylene group having 1 to 20 carbon atoms, 1 or non-adjacent 2 or more-CH in the alkylene group₂-optionally each independently substituted by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-or-OCO-,

t represents an adsorbing group, and T represents an adsorbing group,

MG represents a mesogenic group,

cg represents a hydrogen atom, the adsorption group, the-Sp^al－P^alOr a linear or branched alkylene group having 1 to 20 carbon atoms, 1 or non-adjacent 2 or more-CH groups in the alkylene group₂-optionally substituted independently of each other by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-or-OCO-, any of Cg, MG and T being optionally as described for the polymerizable group-Sp^al－P^al-a substitution of a group of formula (I),

n^sal1、n^sal2and n^sal3Each independently represents a natural number of 1 to 5.

6. The liquid crystal composition according to claim 1, wherein the total content of the compounds is 50 to 95% by mass based on the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3),

the compound is: a liquid crystal composition containing a compound represented by the general formula (N-1)In the compound, Z^N11And Z^N12At least one of them being a linking group other than a single bond, Z^N21And Z^N22At least one of them being a linking group other than a single bond, Z^N31And Z^N32A compound in which at least one of the groups is a linking group other than a single bond.

7. A liquid crystal display element using the liquid crystal composition according to any one of claims 1 to 6.

8. A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of claims 1 to 6.

9. A VA-type, IPS-type, FFS-type, PSA-type or PSVA-type liquid crystal display element using the liquid crystal composition according to any one of claims 1 to 6.

Technical Field

The present invention relates to a liquid crystal composition.

Background

In a liquid crystal display device, a voltage is applied to a liquid crystal composition held between 2 substrates to control the alignment of the liquid crystal composition, thereby changing the optical characteristics of the liquid crystal composition to perform display. The liquid crystal composition changes from an initial alignment state by application of a voltage. The initial alignment state is controlled by an alignment film using rubbed polyimide, but the rubbed polyimide is difficult to split the alignment state, and therefore, a method of controlling the pretilt angle using a polymerizable compound has been developed and put into practical use. In addition, a method of controlling the initial alignment state by a self-aligning compound without using an alignment film itself has been recently studied. However, in these methods, a polymer of a polymerizable compound is used in order to control the alignment of the liquid crystal composition.

These liquid crystal display elements are irradiated with ultraviolet rays to polymerize a polymerizable compound in the following state: a polymerizable liquid crystal composition containing a polymerizable compound in a liquid crystal composition is dropped onto a substrate, and the other substrate is sandwiched therebetween. When a polymerizable liquid crystal composition is dropped onto this substrate, a display defect (drop mark) occurs in the dropped portion when a display element is formed. Therefore, it is desired to develop a polymerizable liquid crystal composition which does not cause such dropping marks.

Prior art documents

Patent document

Patent document 1: japanese Kokai publication No. 2014-524951

Disclosure of Invention

Problems to be solved by the invention

The invention provides a polymerizable liquid crystal composition, which has negative dielectric anisotropy (delta), meets the requirements of display, high-speed response and low-voltage driving performance in a wide temperature range required by a common liquid crystal composition, and has no display defect or few display defects when a liquid crystal display element is formed; the present invention also provides a liquid crystal display element using the liquid crystal composition.

Means for solving the problems

The present invention provides a liquid crystal composition having negative dielectric anisotropy (Δ), the liquid crystal composition comprising: 1 or 2 or more compounds selected from the group consisting of compounds represented by general formulae (N-1), (N-2) and (N-3); and 1 or 2 or more polymerizable compounds,

[ solution 1]

(in the formula, R^N11、R^N12、R^N21、R^N22、R^N31And R^N32Each independently represents an alkyl group having 1 to 8 carbon atoms, 1 of the alkyl groups being non-adjacent and 2 or more-CH₂Can each be independently of the other-CH ═ CH-, -C.ident.C-, -O-, -CO-, -COO-or-OCO-substitutions,

A^N11、A^N12、A^N21、A^N22、A^N31and A^N32Each independently represents a group selected from the group consisting of the following (a), (b), (c), and (d):

(a)1, 4-cyclohexylene (1-CH present in the radical)₂-or non-adjacent 2 or more-CH₂-may be replaced by-O-. ) (ii) a

(b)1, 4-phenylene (1-CH ═ present in the group or non-adjacent 2 or more-CH ═ may be substituted with-N ═ in the group);

(c) naphthalene-2, 6-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl, or decahydronaphthalene-2, 6-diyl (1-CH ═ or non-adjacent 2 or more-CH ═ present in naphthalene-2, 6-diyl or 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl may be replaced with — N ═ may be substituted);

(d)1, 4-cyclohexenylene (Japanese: シクロヘキセニレン yl),

the above-mentioned group (a), group (b), group (c) and group (d) may each independently be substituted with a cyano group, a fluorine atom or a chlorine atom,

X^N21represents a hydrogen atom or a fluorine atom,

T^N31represents-CH₂-or an oxygen atom,

n^N11、n^N12、n^N21、n^N22、n^N31and n^N32Each independently represents an integer of 0 to 3, n^N11+n^N12、n^N21+n^N22And n^N31+n^N32Each independently is 1,2 or 3, when A^N11～A^N32、Z^N11～Z^N32When a plurality of them exist, they may be the same or different. ),

the present invention also provides a liquid crystal display element using the polymerizable liquid crystal composition.

The polymerizable liquid crystal of the present application is particularly useful for forming a liquid crystal display element for active matrix driving.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention can provide a polymerizable liquid crystal composition which does not cause dropping marks during the production of a liquid crystal display element, or which can suppress the generation of dropping marks; and a VA type, IPS type, FFS type, PSA type or PSVA type liquid crystal display element which is free from display defects caused by dropping marks or in which display defects caused by dropping marks are suppressed.

Drawings

Fig. 1 is a diagram schematically showing an embodiment of a liquid crystal display element.

Fig. 2 is an enlarged plan view of the region surrounded by the I-line in fig. 1.

Detailed Description

The liquid crystal composition of the present invention has negative dielectric anisotropy, has a nematic phase-isotropic liquid transition temperature of 60 ℃ or higher, has an absolute value of dielectric anisotropy of 1.5 or higher, and contains 1 or 2 or more compounds selected from the group of compounds represented by the following general formulae (N-1), (N-2), and (N-3).

The compounds represented by the general formulae (N-1), (N-2) and (N-3) correspond to compounds having negative dielectric properties (Δ has a negative sign and an absolute value of more than 2).

The compounds represented by the general formulae (N-1), (N-2) and (N-3) are preferably compounds in which Δ is negative and the absolute value is greater than 3.

In the general formulae (N-1), (N-2) and (N-3), R^N11、R^N12、R^N21、R^N22、R^N31And R^N32Independently preferably an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, a 2 to c ∞The alkenyl group or alkenyloxy group having 2 to 8 carbon atoms is preferably an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkenyloxy group having 2 to 5 carbon atoms, more preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, still more preferably an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms, and particularly preferably an alkenyl group having 3 carbon atoms (propenyl group).

When the ring structure to which the compound is bonded is a phenyl group (aromatic group), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and an alkenyl group having 4 to 5 carbon atoms are preferable, and when the ring structure to which the compound is bonded is a saturated ring structure such as cyclohexane, pyran, dioxane, or the like, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, when carbon atoms and oxygen atoms are present, the total number of oxygen atoms is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably selected from groups represented by any one of formulae (R1) to (R5) (the black dot in each formula represents a carbon atom in the ring structure).

[ solution 2]

In the case of a request for increasing Δ n, A^N11、A^N12、A^N21、A^N22、A^N31And A^N32Each independently is preferably aromatic, and preferably aliphatic for improving the response speed, and preferably represents trans-1, 4-cyclohexylene, 1, 4-phenylene, 2-fluoro-1, 4-phenylene, 3, 5-difluoro-1, 4-phenylene, 2, 3-difluoro-1, 4-phenylene, 1, 4-cyclohexenylene, 1, 4-bicyclo [2.2.2 ] phenylene]Octylene, piperidine-1, 4-diyl, naphthalene-2, 6-diyl, decahydronaphthalene-2, 6-diyl or 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl, more preferably having the following structure,

[ solution 3]

More preferably, it represents trans-1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene.

Z^N11、Z^N12、Z^N21、Z^N22、Z^N31And Z^N32Each independently preferably represents-CH₂O－、－CF₂O－、－CH₂CH₂－、－CF₂CF₂-or a single bond, more preferably-CH₂O－、－CH₂CH₂-or a single bond, particularly preferably-CH₂O-or a single bond.

X^N21Preferably a fluorine atom.

T^N31Preferably an oxygen atom.

n^N11+n^N12、n^N21+n^N22And n^N31+n^N32Preferably 1 or 2, preferably: n is^N11Is 1, n^N12A combination of 0; n is^N11Is 2, n^N12A combination of 0; n is^N11Is 1, n^N12Is a combination of 1; n is^N11Is 2, n^N12Is a combination of 1; n is^N21Is 1, n^N22A combination of 0; n is^N21Is 2, n^N22A combination of 0; n is^N31Is 1, n^N32A combination of 0; n is^N31Is 2, n^N32Is a combination of 0.

In the present application,% represents mass% unless otherwise specified.

The lower limit of the preferable content of the compound represented by the formula (N-1) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%.

The lower limit of the preferable content of the compound represented by the formula (N-2) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%.

The lower limit of the preferable content of the compound represented by the formula (N-3) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%.

When the viscosity of the composition of the present invention is kept low and a composition having a high response speed is required, the lower limit value and the upper limit value are preferably low. When Tni of the composition of the present invention is kept high and a composition having good temperature stability is required, the lower limit value and the upper limit value are preferably low. In order to increase the dielectric anisotropy while keeping the driving voltage low, it is preferable that the lower limit is increased and the upper limit is increased.

The compounds represented by the general formula (N-1) include compounds represented by the following general formulae (N-1 a) to (N-1 g).

[ solution 4]

(in the formula, R^N11And R^N12R in the general formula (N-1)^N11And R^N12Same meaning, n^Na11Represents 0 or 1, n^Nb11Represents 1 or 2, n^Nc11Represents 0 or 1, n^Nd11Represents 1 or 2, n^Ne11Represents 1 or 2, n^Nf12Represents 1 or 2, n^Ng11Represents 1 or 2, A^Ne11Represents trans-1, 4-cyclohexylene or 1, 4-phenylene, A^Ng11Represents trans-1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene, but at least 1A^Ng11To represent1, 4-cyclohexenylene, Z^Ne11Represents a single bond or ethylene, but at least 1Z present in the molecule^Ne11Denotes an ethylene group, a plurality of A's being present in the molecule^Ne11、Z^Ne11And/or A^Ng11May be the same or different. )

More specifically, the compound represented by the general formula (N-1) is preferably a compound selected from the group of compounds represented by the general formulae (N-1-1) to (N-1-21).

The compound represented by the general formula (N-1-1) is the following compound.

[ solution 5]

(in the formula, R^N111And R^N112Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N111Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a propyl group, a pentyl group or a vinyl group. R^N112Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group or a butoxy group.

The compounds represented by the general formula (N-1-1) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be low, the effect is high. In addition, when the characteristics of the drip mark or the afterimage (Japanese: sintered き - き) are improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-1) is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35% with respect to the total amount of the composition of the present invention. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-1) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-1.1) to (N-1-1.25), preferably a compound represented by the formulae (N-1-1.1) to (N-1-1.4), preferably a compound represented by the formulae (N-1-1.1) and (N-1-1.3).

[ solution 6]

The compounds represented by the formulae (N-1-1.1) to (N-1-1.25) may be used alone or in combination, and the lower limit of the preferable content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, and 35%. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-2) is the following compound.

[ solution 7]

(in the formula, R^N121And R^N122Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N121Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group or a pentyl group. R^N122Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably a methyl group, a propyl group, a methoxy group, an ethoxy group or a propoxy group.

The compounds represented by the general formula (N-1-2) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, it is preferable to set the content higher, when importance is placed on solubility at low temperature, the effect is high when the content is set lower, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-2) is 5%, 7%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40%, 42% with respect to the total amount of the composition of the present invention. The upper limit of the preferable content is 50%, 48%, 45%, 43%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-2) is preferably a compound selected from the compounds represented by the formulae (N-1-2.1) to (N-1-2.25)The compounds in the composition group are preferably those represented by the formulae (N-1-2.3) to (N-1-2.7), the formulae (N-1-2.10), the formulae (N-1-2.11), the formulae (N-1-2.13) and the formulae (N-1-2.20), and when importance is attached to the improvement of Δ, those represented by the formulae (N-1-2.3) to (N-1-2.7) are preferred, and when importance is attached to the improvement of T_NIIn the case of (2), the compounds represented by the formulae (N-1-2.10), (N-1-2.11) and (N-1-2.13) are preferred, and in the case of emphasizing improvement of the response speed, the compounds represented by the formulae (N-1-2.20) are preferred.

[ solution 8]

The compounds represented by the formulae (N-1-2.1) to (N-1-2.25) may be used alone or in combination, and the lower limit of the preferred content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-3) is the following compound.

[ solution 9]

(in the formula, R^N131And R^N132Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N131Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N132Preferably C1-5 alkyl group or C3-5 alkyl groupAlkenyl or alkoxy having 1 to 4 carbon atoms, preferably 1-propenyl, ethoxy, propoxy or butoxy.

The compounds represented by the general formula (N-1-3) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-3) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-3) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-3.1) to (N-1-3.21), preferably a compound represented by the formulae (N-1-3.1) to (N-1-3.7) or (N-1-3.21), and preferably a compound represented by the formulae (N-1-3.1), (N-1-3.2), (N-1-3.3), (N-1-3.4) or (N-1-3.6).

[ solution 10]

The compounds represented by the formulae (N-1-3.1) to (N-1-3.4), (N-1-3.6) and (N-1-3.21) may be used alone or in combination, and preferably are a combination of the formulae (N-1-3.1) and (N-1-3.2) or a combination of 2 or 3 selected from the formulae (N-1-3.3), (N-1-3.4) and (N-1-3.6). The lower limit of the preferred content of these compounds alone or in relation to the total amount of the composition according to the invention is 5%, 10%, 13%, 15%, 17%, 20%. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-4) is the following compound.

[ solution 11]

(in the formula, R^N141And R^N142Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N141And R^N142Each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably a methyl group, a propyl group, an ethoxy group or a butoxy group.

The compounds represented by the general formula (N-1-4) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be low, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-4) is 3%, 5%, 7%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 11%, 10%, 8% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-4) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-4.1) to (N-1-4.24), preferably a compound represented by the formulae (N-1-4.1) to (N-1-4.4), preferably a compound represented by the formulae (N-1-4.1), (N-1-4.2) and (N-1-4.4).

[ solution 12]

The compounds represented by the formulae (N-1-4.1) to (N-1-4.24) may be used alone or in combination, and the lower limit of the preferable content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 3%, 5%, 7%, 10%, 13%, 15%, 17%, 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 11%, 10%, 8% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-5) is the following compound.

[ solution 13]

(in the formula, R^N151And R^N152Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N151And R^N152Each independently preferably an alkyl group having 1 to 5 carbon atomsAn alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by the general formula (N-1-5) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be lower, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-5) is 5%, 8%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-5) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-5.1) to (N-1-5.12), and is preferably a compound represented by the formulae (N-1-5.1), (N-1-5.2) or (N-1-5.4).

[ solution 14]

The compounds represented by the formulae (N-1-5.1), (N-1-5.2) and (N-1-5.4) may be used alone or in combination, and the lower limit of the preferred content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, 13%, 15%, 17%, 20%. The upper limit of the content is preferably 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-10) is the following compound.

[ solution 15]

(in the formula, R^N1101And R^N1102Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1101Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group. R^N1102Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-10) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be low, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-10) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-10) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-10.1) to (N-1-10.14), preferably a compound represented by the formulae (N-1-10.1) to (N-1-10.5), preferably a compound represented by the formulae (N-1-10.1) and (N-1-10.2).

[ solution 16]

The compounds represented by the formulae (N-1 to 10.1) and (N-1 to 10.2) may be used alone or in combination, and the lower limit of the preferred content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, 20%. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-11) is the following compound.

[ solution 17]

(in the formula, R^N1111And R^N1112Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1111Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group. R^N1112Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-11) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (N-1-11) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-11) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-11.1) to (N-1-11.14), preferably a compound represented by the formulae (N-1-11.1) to (N-1-11.14), and preferably a compound represented by the formulae (N-1-11.2) and (N-1-11.4).

[ solution 18]

The compounds represented by the formulae (N-1-11.2) and (N-1-11.4) may be used alone or in combination, and the lower limit of the preferred content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, 20%. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-12) is the following compound.

[ solution 19]

(in the formula, R^N1121And R^N1122Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1121Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N1122Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-12) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be low, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-12) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-13) is the following compound.

[ solution 20]

(in the formula, R^N1131And R^N1132Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1131Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N1132Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-13) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-13) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-14) is the following compound.

[ solution 21]

(in the formula, R^N1141And R^N1142Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1141Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N1142Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-14) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be low, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-14) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-15) is the following compound.

[ solution 22]

(in the formula, R^N1151And R^N1152Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1151Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N1152Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-15) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-15) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compounds represented by the general formula (N-1-16) are the following compounds.

[ solution 23]

(in the formula, R^N1161And R^N1162Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1161Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N1162Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-16) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-16) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compounds represented by the general formula (N-1-17) are the following compounds.

[ solution 24]

(in the formula, R^N1171And R^N1172Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1171Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R^N1172Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-17) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-17) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compounds represented by the general formula (N-1-18) are the following compounds.

[ solution 25]

(in the formula, R^N1181And R^N1182Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1181Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group. R^N1182Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compounds represented by the general formula (N-1-18) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-18) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-18) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-18.1) to (N-1-18.5), preferably a compound represented by the formulae (N-1-18.1) to (N-1-18.3), preferably a compound represented by the formulae (N-1-18.2) and (N-1-18.3).

[ solution 26]

The compound represented by the general formula (N-1-20) is the following compound.

[ solution 27]

(in the formula, R^N1201And R^N1202Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1201And R^N1202Each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by the general formula (N-1-20) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-20) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-21) is the following compound.

[ solution 28]

(in the formula, R^N1211And R^N1212Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1211And R^N1212Each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by the general formula (N-1-21) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be much larger, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-21) is 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-22) is the following compound.

[ solution 29]

(in the formula, R^N1221And R^N1222Each independently represents R in the general formula (N-1)^N11And R^N12The same meaning is used. )

R^N1221And R^N1222Each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by the general formula (N-1-22) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-21) is 1%, 5%, 10%, 13%, 15%, 17%, 20% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 5% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (N-1-22) is preferably a compound selected from the group consisting of the compounds represented by the formulae (N-1-22.1) to (N-1-22.12), preferably a compound represented by the formulae (N-1-22.1) to (N-1-22.5), and preferably a compound represented by the formulae (N-1-22.1) to (N-1-22.4).

[ solution 30]

The compound represented by the general formula (N-3) is preferably a compound selected from the group of compounds represented by the general formula (N-3-2).

[ solution 31]

(in the formula, R^N321And R^N322Each independently represents R in the general formula (N-3)^N11And R^N12The same meaning is used. )

R^N321And R^N322Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group or a pentyl group.

The compounds represented by the general formula (N-3-2) may be used alone or in combination of 2 or more compounds. The type of the combinable compound is not particularly limited, and it can be suitably used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The kind of the compound to be used is, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is placed on improvement of Δ, the content is preferably set to be higher, when importance is placed on solubility at low temperature, the effect is high when the content is set to be higher, and when importance is placed on T_NIIn the case of (3), if the content is set to be higher, the effect is high. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by the formula (N-3-2) is 3%, 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35% with respect to the total amount of the composition of the present invention. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5% with respect to the total amount of the composition of the present invention.

Further, the compound represented by the general formula (N-3-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (N-3-2.1) to (N-3-2.3).

[ solution 32]

Preferably containing the following compounds: in the compounds represented by the general formulae (N-1), (N-2) and (N-3) contained in the liquid crystal composition, Z^N11And Z^N12At least one of them being a linking group other than a single bond, Z^N21And Z^N22At least one of them being a linking group other than a single bond, Z^N31And Z^N32A compound in which at least one of the groups is a linking group other than a single bond; preferably contains: z^N11And Z^N12A compound represented by the general formula (N-1) wherein at least one of the groups is a linking group other than a single bond.

As Z^N11And Z^N12The compounds represented by the general formula (N-1) wherein at least one of the groups is a linking group other than a single bond are preferably compounds represented by the general formulae (N-1 d), (N-1 e) and (N-1 f), preferably compounds represented by the general formulae (N-1 d) and (N-1 e), and preferably compounds represented by the general formula (N-1 d).

Further, preferred are compounds represented by the general formulae (N-1-10), (N-1-11), (N-1-12), (N-1-13), (N-1-14), (N-1-15), (N-1-16), (N-1-17), (N-1-18) and (N-1-20), the compounds represented by (N-1-21) and (N-3-2) are preferably compounds represented by the general formulae (N-1-10), (N-1-11), (N-1-12), (N-1-13), (N-1-18), (N-1-20) and (N-1-21), preferably compounds represented by the general formulae (N-1-10), (N-1-11), (N-1-18), (N-1-20) and (N-1-21), and preferably compounds represented by the general formulae (N-1-10), (N-1-11) and (N-1-18).

The total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3) in the total content of the compounds having negative dielectric anisotropy is preferably 80% or more, preferably 85% or more, preferably 87% or more, preferably 90% or more, preferably 93% or more, preferably 96% or more, preferably 98% or more, and preferably substantially 100% or more. By "substantially" is meant: except for compounds which are not intentionally contained, such as impurities during production.

The total content of the following compounds is preferably 50 to 95%, preferably 60 to 90%, preferably 65 to 90%, preferably 70 to 90%, relative to the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3): in the compounds represented by the general formulae (N-1), (N-2) and (N-3) contained in the liquid crystal composition, Z^N11And Z^N12At least one of them being a linking group other than a single bond, Z^N21And Z^N22At least one of them being a linking group other than a single bond, Z^N31And Z^N32A compound in which at least one of the groups is a linking group other than a single bond.

The total content of the following compounds is preferably 50 to 95%, preferably 60 to 90%, preferably 65 to 90%, preferably 70 to 90%, relative to the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3): in the compound represented by the general formula (N-1) contained in the liquid crystal composition, Z^N11And Z^N12A compound in which at least one of the groups is a linking group other than a single bond.

The total content of the compounds represented by the general formulae (N-1-10) and (N-1-11) contained in the liquid crystal composition is preferably 50 to 95%, preferably 60 to 90%, preferably 65 to 90%, preferably 70 to 90%, based on the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3).

The total content of the following compounds is preferably 50 to 95%, preferably 50% to 95%, based on the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3)60-90%, preferably 65-90%, preferably 70-90%, and the compound is: in the compound represented by the general formula (N-1) contained in the liquid crystal composition, Z^N11And Z^N12A compound in which at least one of the groups is a linking group other than a single bond.

A liquid crystal composition wherein the total content of the compounds represented by the general formula (N-1 d) is 50 to 95% of the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3).

Z in the compound represented by the general formula (N-1) is contained in the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3)^N11And Z^N12The lower limit of the content of the compound having at least one of the linking groups other than the single bond and the content of the compound represented by the general formula (N-1 d) is preferably 50%, 60%, 65%, or 70%. Similarly, the preferred upper limit is 88%, 86%, 82%, 78%, 75%, 72%.

The lower limit of the content of the compounds represented by the general formulae (N-1-10), (N-1-11) and (N-1-18) is preferably 50%, 60%, 65% or 70% based on the total content of the compounds represented by the general formulae (N-1), (N-2) and (N-3). Similarly, the preferred upper limit is 88%, 86%, 82%, 78%, 75%, 72%.

When a liquid crystal display element is produced using the liquid crystal composition of the present invention by adjusting the content, the liquid crystal composition of the present invention preferably contains 1 or 2 or more compounds represented by general formula (L) because the compound represented by general formula (L) corresponds to a compound having a substantially neutral dielectric property (Δ has a value of-2 to 2), the number of polar groups such as halogen contained in the molecule is preferably 2 or less, preferably 1 or less, and preferably no polar group such as halogen is contained.

[ solution 33]

(in the formula, R^L1And R^L2Each independently represents a carbon atomAlkyl groups having a sub-number of 1 to 8, 1 or non-adjacent 2 or more-CH groups in the alkyl groups₂-may each be independently replaced by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-or-OCO-,

n^L1represents 0, 1,2 or 3,

A^L1、A^L2and A^L3Each independently represents a group selected from the group consisting of the following (a), (b), and (c):

(a)1, 4-cyclohexylene (1-CH present in the radical)₂-or non-adjacent 2 or more-CH₂-may be replaced by-O-. )

(b)1, 4-phenylene (1-CH-present in the group or non-adjacent 2 or more-CH-may be replaced by-N-and) and

(c) naphthalene-2, 6-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl or decahydronaphthalene-2, 6-diyl (1-CH ═ or nonadjacent 2 or more-CH ═ in naphthalene-2, 6-diyl or 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl may be replaced with-N ═ may be substituted),

the above-mentioned group (a), group (b) and group (c) may each independently be substituted with a cyano group, a fluorine atom or a chlorine atom,

Z^L1and Z^L2Each independently represents a single bond, -CH₂CH₂－、－(CH₂)₄－、－OCH₂－、－CH₂O－、－COO－、－OCO－、－OCF₂－、－CF₂O-, -CH-N-CH-, -CH-, -CF-or-C ≡ C-,

when n is^L1A plurality of A's being present for 2 or 3^L2In the case where they are the same or different, when n is^L1A plurality of Z s being 2 or 3^L3In the case (2), they are the same or different and do not include the compounds represented by the general formulae (N-1), (N-2) and (N-3). )

The types of the compounds represented by the general formula (L) are not particularly limited, and may be appropriately used in combination according to desired properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, etc. the types of the compounds used are, for example, 1 as one embodiment of the present invention, or 2,3,4, 5, 6, 7, 8, 9, or 10 or more in other embodiments of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L) needs to be appropriately adjusted depending on the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dropping marks, afterimages, and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%.

When a composition having a low viscosity and a high response speed is required for the composition of the present invention, the lower limit value is preferably high and the upper limit value is preferably high. When Tni of the composition of the present invention is kept high and a composition having good temperature stability is required, the lower limit value is preferably high and the upper limit value is preferably high. In addition, when the dielectric anisotropy is to be increased in order to keep the driving voltage low, it is preferable to lower the lower limit and lower the upper limit.

When reliability is important, R^L1And R^L2Preferably, all alkyl groups are used, and when importance is attached to reduction in volatility of the compound, all alkoxy groups are preferred, and when importance is attached to reduction in viscosity, at least one of the alkoxy groups is preferably an alkenyl group.

The number of halogen atoms present in the molecule is preferably 0, 1,2 or 3, preferably 0 or 1, and when importance is attached to compatibility with other liquid crystal molecules, 1 is preferred.

With respect to R^L1And R^L2When the ring structure to which the compound is bonded is a phenyl group (aromatic), the compound is preferably a linear alkyl group having 1 to 5 carbon atoms or a linear alkyl groupThe chain alkoxy group having 1 to 4 carbon atoms and the chain alkenyl group having 4 to 5 carbon atoms are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms when the ring structure to which the chain alkoxy group and the chain alkenyl group are bonded is a saturated ring structure such as cyclohexane, pyran, dioxane, or the like. In order to stabilize the nematic phase, when carbon atoms and oxygen atoms are present, the total number of oxygen atoms is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably a group represented by any one of formulae (R1) to (R5) (the black dot in each formula represents a carbon atom in the ring structure).

[ chemical 34]

With respect to n^L1When importance is attached to the response speed, 0 is preferable, 2 or 3 is preferable for improving the upper limit temperature of the nematic phase, and 1 is preferable for achieving a balance between these. In addition, in order to satisfy the required characteristics of the composition, it is preferable to combine compounds of different values.

With respect to A^L1、A^L2And A^L3When it is desired to increase Δ n, it is preferably aromatic, and in order to improve the response speed, it is preferably aliphatic, and each of them independently preferably represents trans-1, 4-cyclohexylene, 1, 4-phenylene, 2-fluoro-1, 4-phenylene, 3, 5-difluoro-1, 4-phenylene, 1, 4-cyclohexenylene, or 1, 4-bicyclo [2.2.2 ] bicyclo]Octylene, piperidine-1, 4-diyl, naphthalene-2, 6-diyl, decahydronaphthalene-2, 6-diyl or 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl, more preferably having the following structure,

[ solution 35]

More preferably, it represents trans-1, 4-cyclohexylene or 1, 4-phenylene.

With respect to Z^L1And Z^L2When considering the importance ofIn the case of the response speed, a single bond is preferable.

The number of halogen atoms in the molecule of the compound represented by the general formula (L) is preferably 0 or 1.

The compound represented by the general formula (L) is preferably a compound selected from the group consisting of compounds represented by the general formulae (L-1) to (L-7).

The compound represented by the general formula (L-1) is the following compound.

[ solution 36]

(in the formula, R^L11And R^L12Each independently represents R in the general formula (L)^L1And R^L2The same meaning is used. )

R^L11And R^L12Preferably, the alkyl group has a straight chain of 1 to 5 carbon atoms, the alkoxy group has a straight chain of 1 to 4 carbon atoms, and the alkenyl group has a straight chain of 2 to 5 carbon atoms.

The compounds represented by the general formula (L-1) may be used alone or in combination of 2 or more compounds, and the types of the compounds that can be combined are not particularly limited, and may be suitably combined and used in accordance with the required properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like, and the types of the compounds used are, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

The lower limit of the preferable content is 1%, 2%, 3%, 5%, 7%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55% with respect to the total amount of the composition of the present invention. The upper limit of the content is preferably 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25% with respect to the total amount of the composition of the present invention.

When a composition having a low viscosity and a high response speed is required for the composition of the present invention, the lower limit value is preferably high and the upper limit value is preferably high. When Tni of the composition of the present invention is kept high and a composition having good temperature stability is required, the lower limit value is preferably an intermediate value and the upper limit value is preferably an intermediate value. In order to increase the dielectric anisotropy while keeping the driving voltage low, the lower limit value and the upper limit value are preferably low.

The compound represented by the general formula (L-1) is preferably a compound selected from the group consisting of compounds represented by the general formula (L-1-1).

[ solution 37]

(in the formula, R^L12Represents the same meaning as in the general formula (L-1)

The compound represented by the general formula (L-1-1) is preferably a compound selected from the group consisting of compounds represented by the formulae (L-1-1.1) to (L-1-1.3), preferably a compound represented by the formula (L-1-1.2) or the formula (L-1-1.3), and particularly preferably a compound represented by the formula (L-1-1.3).

[ solution 38]

The lower limit of the preferable content of the compound represented by the formula (L-1 to 1.3) is 1%, 2%, 3%, 5%, 7%, and 10% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (L-1) is preferably a compound selected from the group consisting of compounds represented by the general formula (L-1-2).

[ solution 39]

(in the formula, R^L12Represents the same meaning as in the general formula (L-1)

The lower limit of the preferable content of the compound represented by the formula (L-1-2) is 1%, 5%, 10%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 35% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, 30% with respect to the total amount of the composition of the present invention.

In addition, the compound represented by the general formula (L-1-2) is preferably a compound selected from the group of compounds represented by the formulae (L-1-2.1) to (L-1-2.4), more preferably a compound represented by the formulae (L-1-2.2) to (L-1-2.4). especially, the compound represented by the formula (L-1-2.2) is preferably used because the response speed of the composition of the present invention is particularly improved, and further, the compound represented by the formula (L-1-2.3) or the formula (L-1-2.4) is preferably used when Tni is required to be high as compared with the response speed, and the content of the compound represented by the formula (L-1-2.3) or the formula (L-1-2.4) is not preferably set to 30% or more in order to make the solubility at low temperatures good.

[ solution 40]

The lower limit of the preferable content of the compound represented by the formula (L-1-2.2) is 10%, 15%, 18%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 38%, 40% relative to the total amount of the composition of the present invention, and the upper limit of the preferable content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, 32%, 30%, 27%, 25%, 22% relative to the total amount of the composition of the present invention.

The lower limit of the preferable content of the total of the compound represented by the formula (L-1-1.3) and the compound represented by the formula (L-1-2.2) is 10%, 15%, 20%, 25%, 27%, 30%, 35%, and 40% relative to the total amount of the composition of the present invention, and the upper limit of the preferable content of the total composition of the present invention is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, 32%, 30%, 27%, 25%, and 22%.

The compound represented by the general formula (L-1) is preferably a compound selected from the group consisting of compounds represented by the general formula (L-1-3).

[ solution 41]

(in the formula, R^L13And R^L14Each independently represents an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms. )

R^L13And R^L14Preferably, the alkyl group has a straight chain of 1 to 5 carbon atoms, the alkoxy group has a straight chain of 1 to 4 carbon atoms, and the alkenyl group has a straight chain of 2 to 5 carbon atoms.

The lower limit of the preferable content of the compound represented by the formula (L-1-3) is 1%, 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, and 30% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 60%, 55%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 27%, 25%, 23%, 20%, 17%, 15%, and 13%, and 10% with respect to the total amount of the composition of the present invention.

Further, the compound represented by the general formula (L-1-3) is preferably a compound selected from the group of compounds represented by the formulae (L-1-3.1) to (L-1-3.13), and is preferably a compound represented by the formula (L-1-3.1), the formula (L-1-3.3) or the formula (L-1-3.4), particularly a compound represented by the formula (L-1-3.1), since the response rate of the composition of the present invention is particularly improved, it is preferable, and when Tni is required to be higher than the response rate, the compounds represented by the formulae (L-1-3.3), the formula (L-1-3.4), the formula (L-1-3.11) and the formula (L-1-3.12) are preferably used, and the content of the compounds represented by the formulae (L-1-3.3), the formula (5393-1-3.7374), the formula (L-1-3.11) and the formula (L-1-3.12) is preferably set to 20% or more so that the total of the compounds is not dissolved.

[ solution 42]

The lower limit of the preferable content of the compound represented by the formula (L-1 to 3.1) is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18%, and 20% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 20%, 17%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formulae (L-1-4) and/or (L-1-5).

[ solution 43]

(in the formula, R^L15And R^L16Each independently represents an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms. )

R^L15And R^L16Preferably, the alkyl group has a straight chain of 1 to 5 carbon atoms, the alkoxy group has a straight chain of 1 to 4 carbon atoms, and the alkenyl group has a straight chain of 2 to 5 carbon atoms.

The lower limit of the preferable content of the compound represented by formula (L-1-4) is 1%, 5%, 10%, 13%, 15%, 17%, and 20% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention.

The lower limit of the preferable content of the compound represented by formula (L-1-5) is 1%, 5%, 10%, 13%, 15%, 17%, and 20% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention.

The compounds represented by the general formulae (L-1-4) and (L-1-5) are preferably compounds selected from the group consisting of the compounds represented by the formulae (L-1-4.1) to (L-1-5.3), and are preferably compounds represented by the formulae (L-1-4.2) or (L-1-5.2).

[ solution 44]

The lower limit of the preferable content of the compound represented by the formula (L-1 to 4.2) is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18%, and 20% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 20%, 17%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention.

Preferably, 2 or more compounds selected from the compounds represented by formula (L-1-1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L2-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) are combined, preferably 2 or more compounds selected from the compounds represented by formula (L-1-1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) and formula (L-1-4.2), and a preferred lower limit value of the total content of these compounds is 1%, 2%, 3%, 5%, 10%, 13%, 23%, 30% or more compounds expressed as a response to the composition, preferably, 3-1%, 3-1-3%, 3-1-3.2%, 3-1-3.2%, 3-1-4%, 3-20%, 3-30%, 3-1% and 30% of the sum of the composition is regarded as a preferred lower limit value of the total content of the composition.

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-6).

[ solution 45]

(in the formula, R^L17And R^L18Each independently represents a methyl group or a hydrogen atom. )

The lower limit of the preferable content of the compound represented by the formula (L-1-6) is 1%, 5%, 10%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 35% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, 30% with respect to the total amount of the composition of the present invention.

Further, the compound represented by the general formula (L-1-6) is preferably a compound selected from the group of compounds represented by the formulae (L-1-6.1) to (L-1-6.3).

[ solution 46]

The compound represented by the general formula (L-2) is the following compound.

[ solution 47]

(in the formula, R^L21And R^L22Each independently represents R in the general formula (L)^L1And R^L2The same meaning is used. )

R^L21Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, R^L22Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compounds represented by the general formula (L-2) may be used alone or in combination of 2 or more compounds, and the types of the compounds that can be combined are not particularly limited, and may be suitably combined and used in accordance with the required properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like, and the types of the compounds used are, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

When importance is attached to solubility at low temperatures, the effect is high if the content is set to be high, and conversely, when importance is attached to the response speed, the effect is high if the content is set to be low. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

The lower limit of the preferable content of the compound represented by formula (L-2) is 1%, 2%, 3%, 5%, 7%, and 10% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (L-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (L-2.1) to (L-2.6), and is preferably a compound represented by the formula (L-2.1), the formula (L-2.3), the formula (L-2.4), or the formula (L-2.6).

[ solution 48]

The compound represented by the general formula (L-3) is the following compound.

[ solution 49]

(in the formula, R^L31And R^L32Each independently represents R in the general formula (L)^L1And R^L2The same meaning is used. )

R^L31And R^L32Each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compounds represented by the general formula (L-3) may be used alone or in combination of 2 or more compounds, and the types of the compounds that can be combined are not particularly limited, and may be suitably combined and used in accordance with the required properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like, and the types of the compounds used are, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (L-3) is 1%, 2%, 3%, 5%, 7%, and 10% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3% with respect to the total amount of the composition of the present invention.

When a high birefringence is obtained, the effect is high if the content is set to be high, and conversely, when high Tni is emphasized, the effect is high if the content is set to be low. In addition, when the dropping mark or the afterimage characteristic is improved, the range of the content is preferably set to the middle.

Further, the compound represented by the general formula (L-3) is preferably a compound selected from the group consisting of compounds represented by the formulae (L-3.1) to (L-3.7), and is preferably a compound represented by the formulae (L-3.2) to (L-3.5).

[ solution 50]

The compound represented by the general formula (L-4) is the following compound.

[ solution 51]

(in the formula, R^L41And R^L42Each independently represents R in the general formula (L)^L1And R^L2The same meaning is used. )

R^L41Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, R^L42Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compounds represented by the general formula (L-4) may be used alone or in combination of 2 or more compounds, and the types of the compounds that can be combined are not particularly limited, and may be suitably combined and used in accordance with the required properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like, and the types of the compounds used are, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) needs to be appropriately adjusted depending on the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drop marks, afterimages, and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-4) is 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content of the compound represented by formula (L-4) is 50%, 40%, 35%, 30%, 20%, 15%, 10%, 5% with respect to the total amount of the composition of the present invention.

The compounds represented by the general formula (L-4) are preferably, for example, compounds represented by the formulae (L-4.1) to (L-4.3).

[ solution 52]

The compound represented by the formula (L-4.1), the compound represented by the formula (L-4.2), both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2), or all of the compounds represented by the formulae (L-4.1) to (L-4.3) may be contained in accordance with the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., and the lower limit of the preferable content of the compound represented by the formula (L-4.1) or the formula (L-4.2) is 3%, 5%, 7%, 9%, 11%, 12%, 13%, 18%, 21%, the upper limit of the preferable content is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, relative to the total amount of the composition of the present invention.

When both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2) are contained, the lower limit of the content of both the compounds relative to the total amount of the composition of the present invention is 15%, 19%, 24%, 30%, and the upper limit thereof is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, and 13%.

The compound represented by the general formula (L-4) is preferably a compound represented by the formulae (L-4.4) to (L-4.6), for example, a compound represented by the formula (L-4.4).

[ Hua 53]

The compound represented by the formula (L-4.4), the compound represented by the formula (L-4.5), or both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) may be contained in accordance with the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like.

The lower limit of the content of the compound represented by formula (L-4.4) or formula (L-4.5) is preferably 3%, 5%, 7%, 9%, 11%, 12%, 13%, 18%, 21%, and the upper limit thereof is preferably 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, relative to the total amount of the composition of the present invention.

When both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) are contained, the lower limit of the content of both the compounds relative to the total amount of the composition of the present invention is 15%, 19%, 24%, 30%, and the upper limit thereof is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, and 13%.

The compound represented by the general formula (L-4) is preferably a compound represented by the formulae (L-4.7) to (L-4.10), and particularly preferably a compound represented by the formula (L-4.9).

[ solution 54]

The compound represented by the general formula (L-5) is the following compound.

[ solution 55]

(in the formula, R^L51And R^L52Each independently represents R in the general formula (L)^L1And R^L2The same meaning is used. )

R^L51Preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, R^L52Preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compounds represented by the general formula (L-5) may be used alone or in combination of 2 or more compounds, and the types of the compounds that can be combined are not particularly limited, and may be suitably combined and used in accordance with the required properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like, and the types of the compounds used are, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-5) needs to be appropriately adjusted depending on the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drop marks, afterimages, and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-5) is 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content of the compound represented by formula (L-5) is 50%, 40%, 35%, 30%, 20%, 15%, 10%, 5% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.1) or the formula (L-5.2), and particularly preferably a compound represented by the formula (L-5.1).

The lower limit of the preferred content of these compounds relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, 9%.

[ solution 56]

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.3) or the formula (L-5.4).

[ solution 57]

The compound represented by the general formula (L-5) is preferably a compound selected from the group consisting of compounds represented by the formulae (L-5.5) to (L-5.7), and particularly preferably a compound represented by the formula (L-5.7).

[ solution 58]

The compound represented by the general formula (L-6) is the following compound.

[ chemical 59]

(in the formula, R^L61And R^L62Each independently represents R in the general formula (L)^L1And R^L2Same meaning as X^L61And X^L62Each independently represents a hydrogen atom or a fluorine atom. )

R^L61And R^L62Each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably X^L61And X^L62One of them is a fluorine atom and the other is a hydrogen atom.

The compounds represented by the general formula (L-6) can be used alone, or in combination with 2 or more compounds, and the types of the combinable compounds are not particularly limited, and can be suitably combined and used in accordance with the required properties such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like, and the types of the compounds used are, for example, 1,2,3,4, or 5 or more as one embodiment of the present invention.

The lower limit of the preferred content of the compound represented by formula (L-6) is 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, and 40% relative to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-6) is 50%, 40%, 35%, 30%, 20%, 15%, 10%, and 5% relative to the total amount of the composition of the present invention, and the upper limit of the preferred content of the compound represented by formula (L-6) is preferably increased when increasing Δ n is important, and is preferably decreased when deposition at low temperature is important.

The compound represented by the general formula (L-6) is preferably a compound represented by the formula (L-6.1) to the formula (L-6.9).

[ solution 60]

The kind of the combinable compounds is not particularly limited, and it is preferable that 1 to 3 kinds, more preferably 1 to 4 kinds are contained among these compounds, and further, since the molecular weight distribution of the selected compounds is wide and effective for solubility, it is preferable that 1 kind of the compound is selected from the compounds represented by the formula (L-6.1) or (L-6.2), 1 kind of the compound is selected from the compounds represented by the formula (L0-6.4) or (L1-6.5), 1 kind of the compound is selected from the compounds represented by the formula (L2-6.6) or the formula (L-6.7), 1 kind of the compound is selected from the compounds represented by the formula (L-6.8) or (L-6.9), and these are appropriately combined, and among them, the compounds represented by the formula (L-6.1), the formula (L-6.3), the formula (L-6.4), the formula (L-6.6) and the formula (L-6.9) are preferably contained.

Further, the compound represented by the general formula (L-6) is preferably, for example, a compound represented by the formula (L-6.10) to the formula (L-6.17), and among them, a compound represented by the formula (L-6.11) is preferable.

[ solution 61]

The compound represented by the general formula (L-7) is the following compound.

[ solution 62]

(in the formula, R^L71And R^L72Each independently represents R in the general formula (L)^L1And R^L2Same meaning as A^L71And A^L72Each independently represents a group represented by the general formula (L)^L2And A^L3Same meaning as A^L71And A^L72May also be substituted independently of one another by fluorine atoms, Z^L71Z in general formula (L)^L2Same meaning as X^L71And X^L72Each independently represents a fluorine atom or a hydrogen atom. )

In the formula, R^L71And R^L72Each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, A^L71And A^L72Each independently of the others is preferably 1, 4-cyclohexylene or 1, 4-phenylene, A^L71And A^L72May also be substituted independently of one another by fluorine atoms, Z^L71Preferably a single bond or COO-, preferably a single bond, X^L71And X^L72Preferably a hydrogen atom.

The kind of the combinable compound is not particularly limited, and may be combined according to the required properties of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. The types of the compounds used are, for example, 1,2,3, and 4 as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) needs to be appropriately adjusted depending on the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drop marks, afterimages, and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-7) is 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, and 20% with respect to the total amount of the composition of the present invention, and the upper limit of the preferable content of the compound represented by formula (L-7) is 30%, 25%, 23%, 20%, 18%, 15%, 10%, and 5% with respect to the total amount of the composition of the present invention.

In the case where an embodiment with high Tni is desired for the composition of the present invention, the content of the compound represented by formula (L-7) is preferably high, and in the case where an embodiment with low viscosity is desired, the content is preferably low.

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulae (L-7.1) to (L-7.4), and is preferably a compound represented by the formula (L-7.2).

[ solution 63]

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulae (L-7.11) to (L-7.13), preferably a compound represented by the formula (L-7.11).

[ solution 64]

The compounds represented by the general formula (L-7) include those represented by the formulae (L-7.21) to (L-7.23), and compounds represented by the formulae (L-7.21) are preferable.

[ solution 65]

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulae (L-7.31) to (L-7.34), preferably a compound represented by the formula (L-7.31) or/and the formula (L-7.32).

[ solution 66]

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulae (L-7.41) to (L-7.44), preferably a compound represented by the formula (L-7.41) or/and the formula (L-7.42).

[ solution 67]

Further, the compounds represented by the general formula (L-7) are preferably compounds represented by the formulae (L-7.51) to (L-7.53).

[ solution 68]

The lower limit of the total content of the compounds represented by general formulae (i), (ii), (L) and (N) is preferably 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% and 100% relative to the total amount of the composition of the present invention, and the upper limit of the preferred content is 100%, 99%, 98%, and 95%.

The lower limit of the preferable content of the total of the compounds represented by the general formulae (i), the general formula (ii), the general formulae (L-1) to (L-7), and the compounds represented by the general formulae (M-1) to (M-8) is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, and 100%, relative to the total amount of the composition of the present invention, the upper limit of the preferable content is 100%, 99%, 98%, and 95%.

The composition of the present invention preferably does not contain a compound having a structure in which oxygen atoms are bonded to each other, such as a peroxy (-CO-OO-) structure, in the molecule.

When importance is attached to the reliability and long-term stability of the composition, the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less, still more preferably 1% or less, and most preferably substantially none, based on the total mass of the composition.

When importance is attached to stability by UV irradiation, the content of the compound substituted with a chlorine atom is preferably 15% or less, preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and further preferably substantially none, based on the total mass of the composition.

The content of the compound having all six-membered ring structures in the molecule is preferably large, and the content of the compound having all six-membered ring structures in the molecule is preferably 80% or more, more preferably 90% or more, further preferably 95% or more, and most preferably the composition is substantially composed of only the compound having all six-membered ring structures in the molecule.

In order to suppress deterioration due to oxidation of the composition, the content of the compound having a cyclohexenylene group as a ring structure is preferably small, and the content of the compound having a cyclohexenylene group is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and further preferably substantially not contained, with respect to the total mass of the composition.

When importance is attached to the improvement of viscosity and the improvement of Tni, the content of the compound having a 2-methylbenzene-1, 4-diyl group in which a hydrogen atom may be substituted with a halogen atom is preferably small, and the content of the compound having the 2-methylbenzene-1, 4-diyl group in the molecule is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and further preferably substantially not contained, with respect to the total mass of the composition.

The term "substantially free" in the present application means that the term does not include substances unless intentionally contained.

In the case where the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, the number of carbon atoms of the alkenyl group is preferably 2 to 5 in the case where the alkenyl group is bonded to cyclohexane, the number of carbon atoms of the alkenyl group is preferably 4 to 5 in the case where the alkenyl group is bonded to benzene, and it is preferable that the unsaturated bond of the alkenyl group is not directly bonded to benzene.

Average elastic constant (K) of liquid crystal composition used in the present invention_AVG) Preferably 10 to 25, as the lower limit thereof, preferably 10, preferably 10.5, preferably 11, preferably 11.5, preferably 12, preferably 12.3, preferably 12.5, preferably 12.8, preferably 13, preferably 13.3, preferably 13.5, preferably 13.8, preferably 14, preferably 14.3, preferably 14.5, preferably 14.8, preferably 15, preferably 15.3, preferably 15.5, preferably 15.8, preferably 16, preferably 16.3, preferably 16.5, preferably 16.8, preferably 17, preferably 17.3, preferably 17.5, preferably 17.8, preferably 18; as its upper limit, it is preferably 25, preferably 24.5, preferably 24, preferably 23.5, preferably 23, preferably 22.8, preferably 22.5, preferably 22.3, preferably 22, preferably 21.8, preferably 21.5, preferably 21.3, preferably 21, preferably 20.8, preferably 20.5, preferably 20.3, preferably 20, preferably 19.8, preferably 19.5, preferably 19.3, preferably 19, preferably 18.8, preferably 18.5, preferably 18.3, preferably 18, preferably 17.8, preferably 17.5, preferably 17.3, preferably 17. When it is important to reduce power consumption, it is effective to suppress the amount of backlight light, and since the liquid crystal display element preferably has a high light transmittance, K is preferably set to_AVGThe value of (d) is set lower. In the case where importance is attached to improvement of response speed, it is preferable to set K to_AVGThe value of (d) is set higher.

The polymerizable compound of the present invention is preferably a compound represented by the following general formula (P).

[ solution 69]

(in the above general formula (P), R^p1Represents a hydrogen atom, a fluorine atom, a cyano group, a hydrogen atom, an alkyl group having 1 to 15 carbon atoms wherein the hydrogen atom may be substituted with a halogen atom, an alkoxy group having 1 to 15 carbon atoms wherein the hydrogen atom may be substituted with a halogen atom, an alkenyl group having 1 to 15 carbon atoms wherein the hydrogen atom may be substituted with a halogen atom, an alkenyloxy group having 1 to 15 carbon atoms wherein the hydrogen atom may be substituted with a halogen atom, or-Sp^p2－P^p2，

P^p1And P^p2Each independently represents formula (P)^p1-1) to formula (P)^p1Any one of the above-mentioned items-9),

[ solution 70]

(in the formula, R^p11And R^p12Each independently represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a haloalkyl group having 1 to 5 carbon atoms, W^p11Represents a single bond, -O-, -COO-or methylene, t^p11Represents 0, 1 or 2, and a plurality of R exist in the molecule^p11、R^p12、W^p11And/or t^p11In the case of (2), they are the same or different. )

Sp^p1And Sp^p2Each independently represents a single bond or a spacer,

Z^p1and Z^p2Each independently represents a single bond, -O-, -S-, -CH₂－、－OCH₂－、－CH₂O－、－CO－、－C₂H₄－、－COO－、－OCO－、－OCOOCH₂－、－CH₂OCOO－、－OCH₂CH₂O－、－CO－NR^ZP1－、－NR^ZP1－CO－、－SCH₂－、－CH₂S－、－CH＝CR^ZP1－COO－、－CH＝CR^ZP1－OCO－、－COO－CR^ZP1＝CH－、－OCO－CR^ZP1＝CH－、－COO－CR^ZP1＝CH－COO－、－COO－CR^ZP1＝CH－OCO－、－OCO－CR^ZP1＝CH－COO－、－OCO－CR^ZP1＝CH－OCO－、－(CH₂)_z－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－(C＝O)－O－(CH₂)₂－、－CH＝CH－、－CF＝CF－、－CF＝CH－、－CH＝CF－、－CF₂－、－CF₂O－、－OCF₂－、－CF₂CH₂－、－CH₂CF₂－、－CF₂CF₂-or-C ≡ C- (wherein, R is^ZP1Each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and a plurality of R's are present in the molecule^ZP1In the case of (2), they are the same or different. )

A^p2Represents 1, 4-phenylene, 1, 4-cyclohexylene, anthracene-2, 6-diyl, phenanthrene-2, 7-diyl, pyridine-2, 5-diyl, pyrimidine-2, 5-diyl, naphthalene-2, 6-diyl, indan-2, 5-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl or 1, 3-dioxane-2, 5-diyl, A^p2Unsubstituted or substituted alkyl group having 1 to 12 carbon atoms, haloalkyl group having 1 to 12 carbon atoms, alkoxy group having 1 to 12 carbon atoms, haloalkoxy group having 1 to 12 carbon atoms, halogen atom, cyano group, nitro group or-Sp^p2－P^p2The substitution is carried out by the following steps,

A^p1is represented by (A)^p1－11)～(A^p1-19) a group represented by (a),

[ solution 71]

(wherein Sp is bonded to the site; (in;)^p1Or Z^p1Bonding at a position to Z^p1Bonded, wherein 1 or more than 2 hydrogen atoms in the structure can be replaced by alkyl with 1-12 carbon atoms, halogenated alkyl with 1-12 carbon atoms, alkoxy with 1-12 carbon atoms, halogenated alkoxy with 1-12 carbon atoms, halogen atom, cyano, nitro or-Sp^p2－P^p2And (4) substitution. )

A^p3Is represented by (A)^p3－11)～(A^p3-19) a group represented by (a),

[ chemical formula 72]

(wherein, at^p2Is bonded to R at^p1Or Z^p2Bonded, wherein 1 or more than 2 hydrogen atoms in the structure can be replaced by alkyl with 1-12 carbon atoms, halogenated alkyl with 1-12 carbon atoms, alkoxy with 1-12 carbon atoms, halogenated alkoxy with 1-12 carbon atoms, halogen atom, cyano, nitro or-Sp^p2－P^p2And (4) substitution. )

m^p2And m^p3Each independently represents 0, 1,2 or 3, m^p1And m^p4Each independently represents 1,2 or 3, and a plurality of P's are present in the molecule^p1、Sp^p1、A^p1、Z^p1、Z^p2、A^p3And/or R^p1In the case of (2), they are the same or different. ).

It is preferable that 1 or 2 or more of the polymerizable monomers are contained.

In the general formula (P) of the present invention, R^p1Is preferably-Sp^p2－P^p2。

P^p1And P^p2Are each independently preferably of the formula (P)^p1-1) to formula (P)^p1Any of-3), preferably (P)^p1－1)。

R^p11And R^p12Each independently is preferably a hydrogen atom or a methyl group.

m^p1+m^p4Preferably 2 or more, preferably 2 or 3.

Z^p1And Z^p2Each independently preferably being a single bond, -OCH₂－、－CH₂O－、－CO－、－C₂H₄－、－COO－、－OCO－、－COOC₂H₄－、－OCOC₂H₄－、－C₂H₄OCO－、－C₂H₄COO－、－CH＝CH－、－CF₂－、－CF₂O－、－(CH₂)₂－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－CH＝CH－COO－、－COO－CH＝CH－、－OCOCH＝CH－、－COO－(CH₂)₂－、－OCF₂-or-C ≡ C-; preferably a single bond, -OCH₂－、－CH₂O－、－C₂H₄－、－COO－、－OCO－、－COOC₂H₄－、－OCOC₂H₄－、－C₂H₄OCO－、－C₂H₄COO－、－CH＝CH－、－(CH₂)₂－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－CH＝CH－COO－、－COO－CH＝CH－、－OCOCH＝CH－、－COO－(CH₂)₂-or-C ≡ C-; preferably only one present in the molecule is-OCH₂－、－CH₂O－、－C₂H₄－、－COO－、－OCO－、－COOC₂H₄－、－OCOC₂H₄－、－C₂H₄OCO－、－C₂H₄COO－、－CH＝CH－、－(CH₂)₂－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－CH＝CH－COO－、－COO－CH＝CH－、－OCOCH＝CH－、－COO－(CH₂)₂-or-C ≡ C-and all others are single bonds; preferably only one present in the molecule is-OCH₂－、－CH₂O－、－C₂H₄-, -COO-or-OCO-and all others are single bonds; preferably all are single bonds.

In addition, it is preferable that only Z is present in the molecule^p1And Z^p2One of them is selected from the group consisting of-CH-COO-, -COO-CH-, - (CH)₂)₂－COO－、－(CH₂)₂－OCO－、－O－CO－(CH₂)₂－、－COO－(CH₂)₂-linking groups in the group and others being single bonds.

Sp^p1And Sp^p2Each independently represents a single bond or an alkylene group having 1 to 30 carbon atoms, wherein-CH in the alkylene group₂The alkylene group may be substituted with-O-, -CO-, -COO-, -OCO-, -CH-or-C.ident.C-, and the hydrogen atom in the alkylene group may be substituted with a halogen atom, and is preferably a linear alkylene group having 1 to 10 carbon atoms or a single bond.

A^p2Preferably 1, 4-phenylene, 1, 4-cyclohexylene, anthracene-2, 6-diyl, phenanthrene-2, 7-diyl or naphthalene-2, 6-diyl, preferably 1, 4-phenylene, 1, 4-cyclohexylene, phenanthrene-2, 7-diyl or naphthalene-2, 6-diyl, in m^p2+m^p3At 0, it is preferably phenanthrene-2, 7-diyl, in m^p2+m^p31,2 or 3, it is preferably 1, 4-phenylene or 1, 4-cyclohexylene. With respect to A^p2In order to improve the compatibility with the liquid crystal compound, 1 or 2 or more hydrogen atoms in the structure may be substituted with a methyl group, an ethyl group, a methoxy group, an ethoxy group or a fluorine atom.

A^p1Preferably of the formula (A)^p1－15)、(A^p1－16)、(A^p1-17) or (A)^p1-18). With respect to A^p1In order to improve the compatibility with the liquid crystal compound, 1 or 2 or more hydrogen atoms in the structure may be substituted with a methyl group, an ethyl group, a methoxy group, an ethoxy group or a fluorine atom.

A^p3Preferably of the formula (A)^p1－14)、(A^p1－15)、(A^p1－16)、(A^p1-17) or (A)^p1-18). With respect to A^p3In order to improve the compatibility with the liquid crystal compound, 1 or 2 or more hydrogen atoms in the structure may be substituted with a methyl group, an ethyl group, a methoxy group, an ethoxy group or a fluorine atom.

m^p2+m^p3Preferably 0, 1,2 or 3, preferably 1 or 2.

The total content of the compounds represented by the general formula (P) is preferably 0.05 to 10%, preferably 0.1 to 8%, preferably 0.1 to 5%, preferably 0.1 to 3%, preferably 0.2 to 2%, preferably 0.2 to 1.3%, preferably 0.2 to 1%, preferably 0.2 to 0.56% of the composition containing the compounds represented by the general formula (P) of the present application.

The preferable lower limit of the total content of the compounds represented by the general formula (P) is 0.01%, 0.03%, 0.05%, 0.08%, 0.1%, 0.15%, 0.2%, 0.25%, 0.3% of the composition containing the compounds represented by the general formula (P) of the present application.

The preferable upper limit of the total content of the compounds represented by the general formula (P) is 10%, 8%, 5%, 3%, 1.5%, 1.2%, 1%, 0.8%, 0.5% with respect to the composition containing the compounds represented by the general formula (P) of the present application.

If the content is small, the effect of adding the compound represented by the general formula (P) is difficult to be exhibited, and problems such as a weak alignment controlling force of the liquid crystal composition or a weak alignment controlling force with the passage of time occur, and if it is too large, the amount remaining after curing increases, the curing takes time, and the reliability of the liquid crystal deteriorates. Therefore, the content is set in consideration of their balance.

The compound represented by the general formula (P) is preferably a compound represented by the general formula (P-1), the general formula (P-2), the general formula (P-3) or the general formula (P-4).

[ solution 73]

(in the formula, P^p11、P^p12、P^p21、P^p22、P^p31、P^p32、P^p41And P^p42Each independently represents a group represented by the formula (P)^p1The same meaning is given to the same person,

Sp^p11、Sp^p12、Sp^p21、Sp^p22、Sp^p31、Sp^p32、SP^p41and SP^p42Each independently represents the same as Sp in the general formula (P)^p1The same meaning is given to the same person,

A^p11、A^p12、A^p13、A^p21、A^p22、A^p23、A^p32and A^p42Each independently represents 1, 4-phenylene, 1, 4-cyclohexylene, anthracene-2, 6-diyl, phenanthrene-2, 7-diyl, pyridine-2, 5-diyl, pyrimidine-2, 5-diyl, naphthalene-2, 6-diyl, indan-2, 5-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl or 1, 3-dioxane-2, 5-diyl, A^p11、A^p12、A^p13、A^p21、A^p22、A^p23、A^p32And A^p42Each independently unsubstituted or optionally substituted by an alkyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, a haloalkoxy group having 1 to 12 carbon atoms, a halogen atom, a cyano group, a nitro group or-Sp in the general formula (P)^p2－P^p2The substitution is carried out by the following steps,

A^p41a is represented by the general formula (P)^p1The same meaning is given to the same person,

A^p43represents a in the general formula (P)^p3The same meaning is given to the same person,

Z^p21、Z^p22、Z^p41and Z^p42Represents a single bond, -O-, -S-, -CH₂－、－OCH₂－、－CH₂O－、－CO－、－C₂H₄－、－COO－、－OCO－、－OCOOCH₂－、－CH₂OCOO－、－OCH₂CH₂O－、－CO－NR^ZP1－、－NR^ZP1－CO－、－SCH₂－、－CH₂S－、－CH＝CR^ZP1－COO－、－CH＝CR^ZP1－OCO－、－COO－CR^ZP1＝CH－、－OCO－CR^ZP1＝CH－、－COO－CR^ZP1＝CH－COO－、－COO－CR^ZP1＝CH－OCO－、－OCO－CR^ZP1＝CH－COO－、－OCO－CR^ZP1＝CH－OCO－、－(CH₂)_z－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－(C＝O)－O－(CH₂)₂－、－CH＝CH－、－CF＝CF－、－CF＝CH－、－CH＝CF－、－CF₂－、－CF₂O－、－OCF₂－、－CF₂CH₂－、－CH₂CF₂－、－CF₂CF₂-or-C ≡ C- (wherein, R is^ZP1Each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and a plurality of R's are present in the molecule^ZP1In the case of (2), they are the same or different. ) But Z present in the molecule^p21And Z^p22At least one of them represents a single bond. )

P^p11、P^p12、P^p21、P^p22、P^p31、P^p32、P^p41And P^p42Each independently of the others is preferably identical to P in the formula (P)^p1Are identically of formula (P)^p1-1) to formula (P)^p1-3), preferably (P)^p1－1)，R^p11And R^p12Each independently is preferably a hydrogen atom or a methyl group.

Sp^p11、Sp^p12、Sp^p21、Sp^p22、Sp^p31、Sp^p32、Sp^p41And Sp^p42Each independently represents a single bond or an alkylene group having 1 to 30 carbon atoms, wherein-CH in the alkylene group₂The alkylene group may be substituted with-O-, -CO-, -COO-, -OCO-, -CH-or-C.ident.C-, and the hydrogen atom in the alkylene group may be substituted with a halogen atom, and is preferably a linear alkylene group having 1 to 10 carbon atoms or a single bond.

A^p11、A^p12、A^p13、A^p21、A^p22、A^p23、A^p32And A^p42Each independently of the others is preferably 1, 4-phenylene, 1, 4-cyclohexylene, anthracene-2, 6-diyl, phenanthrene-2, 7-diyl or naphthalene-2, 6-diyl, preferably 1, 4-phenylene, 1, 4-cyclohexylene, phenanthrene-2, 7-diyl or naphthalene-2, 6-diyl. In the general formulae (P-1) and (P-2), each independently preferably represents 1, 4-phenylene or 1, 4-cyclohexylene, and 1 or 2 of the structures are preferred for improving the compatibility with liquid crystal compoundsThe above hydrogen atoms may be substituted with methyl, ethyl, methoxy, ethoxy or fluorine atoms. In the general formula (P-3), phenanthrene-2, 7-diyl group is preferable, and 1 or 2 or more hydrogen atoms in the structure thereof may be substituted with a methyl group, an ethyl group, a methoxy group, an ethoxy group or a fluorine atom in order to improve the compatibility with the liquid crystal compound.

Z^p21Preferably a single bond, -OCH₂－、－CH₂O－、－CO－、－C₂H₄－、－COO－、－OCO－、－COOC₂H₄－、－OCOC₂H₄－、－C₂H₄OCO－、－C₂H₄COO－、－CH＝CH－、－CF₂－、－CF₂O－、－(CH₂)₂－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－CH＝CH－COO－、－COO－CH＝CH－、－OCOCH＝CH－、－COO－(CH₂)₂－、－OCF₂-or-C ≡ C-; preferably a single bond, -OCH₂－、－CH₂O－、－C₂H₄－、－COO－、－OCO－、－COOC₂H₄－、－OCOC₂H₄－、－C₂H₄OCO－、－C₂H₄COO－、－CH＝CH－、－(CH₂)₂－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－CH＝CH－COO－、－COO－CH＝CH－、－OCOCH＝CH－、－COO－(CH₂)₂-or-C ≡ C-; preferably only one present in the molecule is-OCH₂－、－CH₂O－、－C₂H₄－、－COO－、－OCO－、－COOC₂H₄－、－OCOC₂H₄－、－C₂H₄OCO－、－C₂H₄COO－、－CH＝CH－、－(CH₂)₂－COO－、－(CH₂)₂－OCO－、－OCO－(CH₂)₂－、－CH＝CH－COO－、－COO－CH＝CH－、－OCOCH＝CH－、－COO－(CH₂)₂-or-C ≡ C-and all others are single bonds; preferably only one present in the molecule is-OCH₂－、－CH₂O－、－C₂H₄-, -COO-or-OCO-and all others are single bonds; preferably all are single bonds.

In addition, Z present in the molecule is preferable^p21Only one of which is selected from the group consisting of- (CH)₂)₂－COO－、－(CH₂)₂－OCO－、－O－CO－(CH₂)₂－、－COO－(CH₂)₂-linking groups in the group, others being single bonds.

Preferred examples of the compound represented by the general formula (P-1) of the present invention include polymerizable compounds represented by the following formulae (P-1-1) to (P-1-46).

[ chemical formula 74]

[ solution 75]

[ 76]

[ solution 77]

[ solution 78]

(in the formula, P^p11、P^p12、Sp^p11And Sp^p12Represents P in the general formula (P-1)^p11、P^p12、Sp^p11And Sp^p12The same meaning is used. )

Preferred examples of the compound represented by the general formula (P-2) of the present invention include polymerizable compounds represented by the following formulae (P-2-1) to (P-2-12).

[ solution 79]

(in the formula, P^p21、P^p22、Sp^p21And Sp^p22Represents P in the general formula (P-2)^p21、P^p22、Sp^p21And Sp^p22The same meaning is used. )

Preferable examples of the compound represented by the general formula (P-3) of the present invention include polymerizable compounds represented by the following formulae (P-3-1) to (P-3-15).

[ solution 80]

[ solution 81]

(in the formula, P^p31、P^p32、Sp^p31And Sp^p32Represents P in the general formula (P-3)^p31、P^p32、Sp^p31And Sp^p32The same meaning is used. )

Preferable examples of the compound represented by the general formula (P-4) of the present invention include polymerizable compounds represented by the following formulae (P-4-1) to (P-4-15).

[ solution 82]

[ solution 83]

[ solution 84]

[ solution 85]

(in the formula, P^p41、P^p42、Sp^p41And Sp^p42Represents P in the general formula (P-4)^p41、P^p42、Sp^p41And Sp^p42The same meaning is used. )

The composition of the present invention preferably contains a self-aligning compound in order to further impart vertical alignment. The self-orienting compound is: a compound for controlling the alignment of a liquid crystal composition without using a conventional liquid crystal alignment film such as polyimide on one or both sides of a substrate.

The self-alignment compound is mainly added to the liquid crystal composition and used, and has the following functions: the liquid crystal composition interacts with a member (an electrode (e.g., ITO), a substrate (e.g., a glass substrate, an acryl substrate, a transparent substrate, a flexible substrate, or the like), a resin layer (e.g., a color filter, an alignment film, a protective layer, or the like), an insulating film (e.g., an inorganic material film, SiNx, or the like)) which is in direct contact with a liquid crystal layer containing the liquid crystal composition, and induces vertical alignment or parallel alignment of liquid crystal molecules of the liquid crystal layer. Particularly preferred is a compound which can align the liquid crystal composition vertically or substantially vertically with respect to the substrate.

The self-aligning compound preferably has: a polymerizable group for polymerization, a mesogenic group similar to the liquid crystal molecules, an adsorptive group capable of interacting with a member directly contacting the liquid crystal layer, and a bending group (japanese: flexor) for inducing alignment of the liquid crystal molecules.

The self-aligning compound is preferably a compound represented by the following general formula (SA L).

[ solution 86]

(in the above formula, P^alRepresents a group represented by the general formula (P-I) to the general formula (P-IX),

[ solution 87]

Sp^alRepresents a single bond or a linear or branched alkylene group having 1 to 20 carbon atoms, 1 or non-adjacent 2 or more-CH in the alkylene group₂-may each be independently replaced by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-or-OCO-,

t represents an adsorbing group, and T represents an adsorbing group,

MG represents a mesogenic group,

cg represents a hydrogen atom, the adsorption group, or the-Sp^al－P^alOr a linear or branched alkylene group having 1 to 20 carbon atoms, 1 or non-adjacent 2 or more-CH groups in the alkylene group₂Each independently of the others, -CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-or-OCO-, and any of Cg, MG and T may be replaced by-Sp as the polymerizable group^al－P^al-a substitution of a group of formula (I),

n^sal1、n^sal2and n^sal3Each independently represents a natural number of 1 to 5. )

The polymerizable group of the present invention is P^alThe group represented is bonded to other structures directly or via a spacer as required. The polymerizable group is preferably P^al－Sp^al-represents.

P^alPreferably a group selected from the group represented by the following general formulae (P-I) to (P-IX).

[ solution 88]

P is above^a1Preferably, the group is selected from the group represented by the following general formulae (P-I) to (P-IX), and is preferably the general formula (P-I).

In the self-aligning compound of the present invention, P^al－Sp^alCan be bonded to mesogenic groups, adsorbing groups and/or bending groups.

In the self-aligning compound of the present invention, the polymerizable group is preferably bonded to the mesogenic group, the adsorbing group or the bending group directly or via a spacer, and more preferably bonded to the mesogenic group or the adsorbing group directly or via a spacer.

The above spacer group (Sp)^al) Preferably represents a single bond or a linear or branched alkylene group having 1 to 20 carbon atoms, more preferably represents a single bond or a linear alkylene group having 1 to 20 carbon atoms, and still more preferably represents a single bond or a linear alkylene group having 2 to 10 carbon atoms. In addition, in the above spacer group (Sp)^al) In the alkylene group, 1 or non-adjacent 2 or more-CH₂-may each be independently replaced by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-, or-OCO-.

In the self-aligning compound of the present invention, the polymerizable group (P)^al－Sp^al-) is preferably 1 or more and 5 or less, more preferably 1 or more and 4 or less, further preferably 2 or 3, and further preferably 2.

P^al－Sp^alThe hydrogen atom in (E-O) -may be substituted with a polymerizable group, an adsorptive group and/or a bending group.

The mesogenic group in the present invention means a group having a rigid portion, for example, one having one or more cyclic groups, preferably 2 to 4 cyclic groups, more preferably 3 to 4 cyclic groups, and the cyclic groups may be connected by a connecting group as necessary. The mesogenic group is preferably a skeleton similar to the liquid crystal compound used in the liquid crystal layer.

The "cyclic group" in the present specification means an atomic group in which atoms constituting the group are bonded to form a ring, and includes a carbon ring, a heterocyclic ring, a saturated or unsaturated cyclic structure, a monocyclic ring, a 2-cyclic structure, a polycyclic structure, an aromatic group, a non-aromatic group, and the like. The cyclic group may contain at least one hetero atom, and may be substituted with at least one substituent (a halogen atom, a reactive functional group, an organic group (an alkyl group, an aryl group, or the like)). When the cyclic group is a monocyclic ring, the mesogenic group preferably contains 2 or more monocyclic rings.

The mesogenic group is preferably represented by, for example, general formula (a L).

[ solution 89]

(in the formula, Z^ALRepresents a single bond, -CH-, -CF-, -C.ident.C-, -COO-, -OCO-, -OCOO-, -CF₂O－、－OCF₂－、－CH＝CHCOO－、－OCOCH＝CH－、－CH₂－CH₂COO－、－OCOCH₂―CH₂－、－CH＝C(CH₃)COO－、－OCOC(CH₃)＝CH－、－CH₂－CH(CH₃)COO－、－OCOCH(CH₃)－CH₂－、－OCH₂CH₂O-or C1-20 alkylene, 1 or non-adjacent 2 or more-CH in the alkylene₂May be replaced by-O-, -COO-or-OCO-,

A^ALrepresents a cyclic group having a valence of 2,

Z^ALand A^AL1 or 2 or more hydrogen atoms in (A) may be each independently substituted by a halogen atom, an adsorbing group, P^a1－Sp^a1-or a 1-valent organic radical,

when Z is^ALAnd A^ALWhen a plurality of each of them are present, each is the same as or different from each other, m^ALRepresents an integer of 1 to 5, and the left and right ends in the above formula represent a bond. )

In the general formula (A L), Z^ALPreferably a single bond or an alkylene group having 2 to 20 carbon atoms, more preferably a single bond or an alkylene group having 2 to 10 carbon atoms. 1 or non-adjacent 2 or more-CH groups in the above alkylene group₂-may be replaced by-O-, -COO-or-OCO-. When the linearity of the rod-like molecule is intended, the single bond is preferably a form in which the ring is directly connected to the ring, and the number of atoms directly connecting the ring to the ring is preferably an even number. For example, when-CH₂－CH₂In the case of COO-, the number of atoms directly connecting the ring to the ring is 4.

In the general formula (A L), the cyclic group is preferably selected from the group consisting of 1, 4-phenylene, 1, 4-cyclohexylene, 1, 4-cyclohexenyl, tetrahydropyran-2, 5-diyl, 1, 3-dioxane-2, 5-diyl, tetrahydrothiopyran-2, 5-diyl, thiophene-2, 5-diyl, 1, 4-bicyclo (2,2,2) octylene, decahydronaphthalene-2, 6-diyl, pyridine-2, 5-diyl, pyrimidine-2, 5-diyl, pyrazine-2, 5-diyl, thiophene-2, 5-diyl, 1,2,3, 4-tetrahydronaphthalene-2, 6-diyl, 2, 6-naphthylene, phenanthrene-2, 7-diyl, 9, 10-dihydrophenanthrene-2, 7-diyl, 1,2,3,4,4a,9,10 a-octahydrophenanthrene-2, 7-diyl, 1,4 b [1, 4,4a, 5-b ] triphenylene, 4,4 b, 4, 5']Dithiophene-2, 6-diyl, benzo [1, 2-b: 4, 5-b']Diselenophene-2, 6-diyl, [ 1]]Benzothieno [3, 2-b ]]Thiophene-2, 7-diyl, [ 1]]Benzoselenophenato (Japanese: ベンゾセレノフェノ) [3, 2-b ]]Selenophene-2, 7-diyl and fluorene-2, 7-diyl, which may be unsubstituted or substituted, more preferably 1, 4-phenylene, 1, 4-cyclohexylene, 2, 6-naphthylene or phenanthrene-2, 7-diyl, preferably 1, 4-phenylene or 1, 4-cyclohexylene. In additionIn addition, 1 or 2 or more hydrogen atoms in the cyclic group may be replaced by a halogen atom, an adsorbing group, P^a1－Sp^a1-or 1-valent organic group.

In the general formula (A L), the term "monovalent organic group" means a group having a chemical structure formed by forming an organic compound into a 1-valent group, and refers to a group obtained by removing 1 hydrogen atom from an organic compound, and examples thereof include an alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, an alkoxy group having 1 to 14 carbon atoms, an alkenyloxy group having 2 to 15 carbon atoms, and the like, preferably an alkyl group having 1 to 15 carbon atoms or an alkoxy group having 1 to 14 carbon atoms, and 1 or non-adjacent 2 or more-CH groups among the alkyl group, alkenyl group, alkoxy group, and alkenyloxy group₂-may be replaced by-O-, -COO-or-OCO-. Further, the above-mentioned monovalent organic group may have an action as a bending group described later.

In the above general formula (A L), m^ALPreferably an integer of 2 to 4.

Among the mesogenic groups, a particularly preferred form is represented by the following general formula (A L-1) or (A L-2), and more preferably by the formula (A L-1).

[ solution 90]

(in the above formula, X^al1～X^al18Each independently represents a hydrogen atom, a halogen atom, P^a1－Sp^a1-, an adsorbing group or a bending group, ring A and ring B each independently represent a cyclohexane ring or a benzene ring,

X^al1～X^al18any 1 or 2 or more species of them are replaced with the above-mentioned adsorptive group,

X^al1～X^al18any 1 or 2 or more of them are substituted with the above-mentioned bending group,

the adsorption group and the bending group may be replaced with P^a1－Sp^a1－，

The general formula (A L-1) or the general formula (A L-2) each has 1 or 2 or more of the aboveP^a1－Sp^a1－。)

In the above formula (A L-1), X is preferred^a11Or X^a18～X^a112At least 1 or 2 or more species of them are replaced with an adsorbing group, more preferably X^a11Or X^a110At least 1 or 2 or more species of them are replaced with an adsorbing group. In this case, the adsorptive group may be replaced with P^a1－Sp^a1-. Particularly when ring A is a cyclohexane ring, X is preferably X^a110Is replaced with an adsorbing group.

In the above formula (A L-1), X is preferred^a16～X^a114At least 1 or 2 or more species of (A) are substituted with a polymerizable group, more preferably X^al9Or X^a111Is substituted with P^a1－Sp^a1－。

In the above formula (A L-1), X is preferred^a11～X^a13、X^a6～X^a114、X^a117～X^a118At least 1 or 2 or more of them are replaced by a bending group, preferably X^a11～X^a13、X^a6～X^a19、X^a111～X^a114Or X^a117～X^a118At least 1 or 2 or more of them are substituted with a bending group. More preferably X^a11Is replaced by a bending group, and X^a6～X^a19Or X^a111～X^a114Any 1 of (a) is substituted with a bending group. In this case, the former X is more preferable^a11The number of carbon atoms of the bending group of (a) is larger than that of the latter bending group. The bending group may be substituted by P^a1－Sp^a1－。

In the above formula (A L-2), X is preferred^a11Or X^a16～X^a110At least 1 or 2 or more species of them are replaced with an adsorbing group, more preferably X^a11Or X^a18Is replaced with an adsorbing group. In this case, the adsorptive group may be replaced with P^a1－Sp^a1-. Particularly when ring A is a cyclohexane ring, X is preferably X^a18Is replaced with an adsorbing group.

In the above formula (A L-2)) Of these, X is preferred^al6～X^a110Any 1 or 2 or more of them are substituted with P^a1－Sp^a1-, more preferably X^al7Or X^a19Is replaced with P^a1－Sp^a1－。

In the above formula (A L-2), X is preferred^a16～X^a110At least 1 or 2 or more of them are replaced by P^a1－Sp^a1-, more preferably X^a17Or X^a14Is replaced with P^a1－Sp^a1－。

In the above formula (A L-2), X is preferred^a11～X^a17Or X^a9～X^a114At least 1 or 2 or more of them are replaced by a bending group, preferably X^a11、X^a4～X^a17Or X^a19～X^a112At least 1 or 2 or more of them are substituted with a bending group. More preferably X^a11Is replaced by a bending group, and X^al4～X^a17Or X^a19～X^a112Any 1 of (a) is substituted with a bending group. In this case, the former X is even more preferable^a11The number of carbon atoms of the bending group of (a) is larger than that of the latter bending group. The bending group being replaceable by P^a1－Sp^a1－。

Preferred examples of the mesogenic group include the following formulas (A L-1-1) to (A L-2-3) — the general formula (A L) has a structure in which 2 hydrogen atoms are eliminated from the structure.

One or more hydrogen atoms in the cyclohexane ring, benzene ring, pyran ring or dioxane ring in the general formulae (A L-1-1) to (A L-2-3) may be replaced by a halogen atom or a P atom^a1－Sp^a1A 1-valent organic group (e.g., an alkyl group having 1 to 15 carbon atoms or an alkoxy group having 1 to 14 carbon atoms), an adsorbing group, or a bending group.

[ solution 91]

Preferred forms among the mesogenic groups are structures represented by the general formula (A L-1-1), the general formula (A L-1-4), the general formula (A L-1-7), the general formula (A L-2-1) or the general formula (A L-2-3), structures represented by the general formula (A L-1-4), the general formula (A L-1-7) or the general formula (A L-2-3), and structures represented by the general formula (A L-1-4) or the general formula (A L-1-7).

The adsorption group of the present invention is a group having an action of adsorbing an adsorption medium such as a substrate, a film, or an electrode. The adsorption is generally classified into chemisorption in which a chemical bond (a covalent bond, an ionic bond, or a metallic bond) is formed to adsorb between an adsorbate and an adsorbate, or physisorption other than the chemisorption. Therefore, the adsorbing group of the present invention is preferably a group capable of physical adsorption to an adsorbate, and the adsorbing group is more preferably bound to the adsorbate by intermolecular forces. Examples of the form in which the adsorbate is bound by the intermolecular force include: binding to the adsorbate occurs through interaction of permanent dipoles, permanent quadrupoles, dispersive forces, charge transfer forces, or hydrogen bonds. Preferred embodiments of the adsorptive group of the present invention include those capable of binding to an adsorbate by hydrogen bonding. In this case, the adsorption group of the present invention may be a proton donor or acceptor by a hydrogen bond, or both.

The adsorption group of the present invention is preferably a group containing a polar element and having an atomic group in which a carbon atom and a hetero atom are bonded to each other. The polar element as referred to in the present specification means an atomic group in which a carbon atom and a hetero atom are directly bonded to each other. The heteroatom is preferably at least 1 selected from the group consisting of N, O, S, P, B and Si, preferably at least 1 selected from the group consisting of N, O and S, preferably at least 1 selected from the group consisting of N and O, and preferably O.

In the self-aligning compound of the present invention, the number of the polar element in the adsorbing group is not particularly limited, and the number of the polar element is not particularly limited.

In the self-orienting compound of the present invention, the number of the adsorption groups in one molecule is preferably 1 to 8, more preferably 1 to 4, and still more preferably 1 to 3.

It is to be noted that the adsorbing group of the present invention does not include P^a1－Sp^a1-and a bending group.

The adsorption group of the present invention contains 1 or 2 or more polar elements, and the adsorption group can be roughly classified into a cyclic base type and a chain base type. The cyclic base type is a form containing a cyclic group having a cyclic structure containing a polar element in its structure, and the chain base type is a form containing no cyclic group having a cyclic structure containing a polar element in its structure. The chain group may have a polar element in a linear or branched chain group, or may have a cyclic structure containing no polar element in a part thereof.

The form of the adsorption group of the present invention containing a cyclic group means that: the cyclic atomic arrangement contains at least 1 polar element. The cyclic group in this specification is as described above. Therefore, when the adsorption group of the present invention is in a form containing a cyclic group, the adsorption group may be branched or linear as long as it contains a cyclic group containing a polar element.

The form in which the adsorbing group of the present invention is a chain group means the following form: the molecule does not contain a cyclic atomic arrangement containing polar elements, and contains at least 1 polar element in a linear atomic arrangement (or may be branched). The chain group in the present specification means a linear (or branched) atomic group in which atoms used for the structure are bonded without arranging cyclic atoms in the structural formula, and means a non-cyclic group. In other words, the following concept is considered: the term "linear or branched aliphatic group" means an aliphatic group which may have a saturated bond or an unsaturated bond, and includes, for example, an alkyl group, an alkenyl group, an alkoxy group, an ester, an ether, a ketone, etc., and may be substituted with at least 1 substituent (a reactive functional group (a vinyl group, an acryloyl group, a methacryloyl group (メタクリル group, etc.)), a chain organic group (an alkyl group, a cyano group, etc.)). The chain group of the present invention may be either linear or branched.

The adsorbing group of the present invention preferably has a chain group or a cyclic group, and when importance is attached to the adsorption ability, a chain group is preferred, and from the viewpoint of stability to the liquid crystal composition, a cyclic group is preferred.

When the adsorption group of the present invention is a cyclic group, it is more preferably a heteroaromatic group having 3 to 20 carbon atoms (including a condensed ring) or a heteroaliphatic group having 3 to 20 carbon atoms (including a condensed ring), still more preferably a heteroaromatic group having 3 to 12 carbon atoms (including a condensed ring) or a heteroaliphatic group having 3 to 12 carbon atoms (including a condensed ring), and still more preferably represents a 5-membered cyclic heteroaromatic group, a 5-membered cyclic heteroaliphatic group, a 6-membered cyclic heteroaromatic group or a 6-membered cyclic heteroaliphatic group, and a hydrogen atom in these ring structures may be substituted by a halogen atom, a linear or branched alkyl group having 1 to 5 carbon atoms, or an alkoxy group.

When the adsorption group of the present invention is a chain group, the hydrogen atom or-CH in a linear or branched alkyl group having 1 to 20 carbon atoms is preferable₂-CH substituted with a polar element, 1 or more than 2 non-adjacent of the alkyl groups₂-may be replaced by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-, or-OCO-. When the adsorptive group of the present invention is a chain group, it preferably contains a polar element or contains 2 or more polar elements at the end.

The hydrogen atom of the adsorption group of the present invention may be substituted with a polymerizable group.

Specifically, the type of the polar element of the present invention is preferably a partial structure represented by a polar element containing an oxygen atom (hereinafter, referred to as an oxygen-containing polar element), a polar element containing a nitrogen atom (hereinafter, referred to as a nitrogen-containing polar element), a polar element containing a phosphorus atom (hereinafter, referred to as a phosphorus-containing polar element), a polar element containing a boron atom (hereinafter, referred to as a boron-containing polar element), a polar element containing a silicon atom (hereinafter, referred to as a silicon-containing polar element), or a polar element containing a sulfur atom (hereinafter, referred to as a sulfur-containing polar element).

As the oxygen-containing polar element, preferred are: selected from hydroxyl (-OH), alkanol (-R)^t－OH；R^tIs alkylene), alkoxy (-OR; wherein R is alkyl group, formyl group (-CHO), carboxyl group (-COOH), ether group (-R)^tOR^t' -; wherein R is^t、R^t’Is alkylene or alkenylene), carbonyl (-R)^t－C(＝O)－R^t’-; wherein R is^t、R^t’Alkylene or alkenylene), carbonate (-O-C (-O) -O-) and ester (-COOR)^t’-; wherein R is^t’Alkylene or alkenylene) or a group in which the group is bonded to a carbon atom.

As the nitrogen-containing polar element, preferred are: selected from cyano (-CN), primary amino (-NH)₂) Secondary amino (-NH-), tertiary amino (-NRR'; wherein R, R' is alkyl), pyridyl, carbamoyl (-CONH)₂) And ureido (-NHCONH)₂) At least 1 group of the group or a group in which the group is bonded to a carbon atom.

The phosphorus-containing polar element is preferably: selected from phosphinyl (-CX)₂－P(＝O)H₂) And phosphoric acid group (-CX)₂－OP(＝O)(OH)₂) At least 1 group of the group or a group in which the group is bonded to a carbon atom.

The boron-containing polar element is preferably: having boronic acid group (-B (OH) bonded to carbon atom₂) A group of (1).

The silicon-containing polar element is preferably: -Si (OH)₃A group OR a group in which a carbon atom is bonded to a-Si (OR) (OR ') (wherein R, R ' and R ' are alkyl groups).

The sulfur-containing polar element is preferably selected from the group consisting of a mercapto group (-SH), a thioether group (-S-), a sulfinyl group (-S (═ O) -), and a sulfonyl group (-SO)₂-) sulfonamido (-SO)₂NH₂) Sulfur (I) and (II) saltsAcid group (-SO)₃H) And a sulfinyl group (-S (═ O) OH), or a group in which the group is bonded to a carbon atom.

Thus, the adsorption group of the present invention is preferably: selected from the group consisting of a group having an oxygen-containing polar element in a cyclic group pattern (hereinafter referred to as an oxygen-containing cyclic group), a group having a nitrogen atom polar element in a cyclic group pattern (hereinafter referred to as a nitrogen-containing cyclic group), a group having a phosphorus-containing polar element in a cyclic group (hereinafter referred to as a phosphorus-containing cyclic group), a group having a boron-containing polar element in a cyclic group (hereinafter referred to as a boron-containing cyclic group), a group having a silicon-containing polar element in a cyclic group (hereinafter referred to as a silicon-containing cyclic group), a group having a sulfur-containing polar element in a cyclic group (hereinafter referred to as a sulfur-containing cyclic group), a group having an oxygen-containing polar element in a chain group (hereinafter referred to as an oxygen-containing chain group), a group having a nitrogen atom polar element in a chain group (hereinafter referred to as a nitrogen-containing chain group), a group having a phosphorus-containing, The chain group contains 1 or 2 or more groups per se or contains the group selected from the group consisting of a group having a boron-containing polar element (hereinafter, referred to as a boron-containing chain group), a group having a silicon-containing polar element (hereinafter, referred to as a silicon-containing chain group), and a group having a sulfur-containing polar element (hereinafter, referred to as a sulfur-containing chain group), and more preferably contains 1 or 2 or more groups selected from the group consisting of an oxygen-containing cyclic group, a sulfur-containing cyclic group, an oxygen-containing chain group, and a nitrogen-containing chain group, from the viewpoint of adsorption ability.

The adsorption group of the present invention is preferably a group represented by the following general formula (T).

[ solution 92]

(in the above general formula (T), X^t1Represents a linear or branched alkyl group having 1 to 18 carbon atoms or-NH₂The hydrogen atom in the above alkyl group may be substituted by cyano, P^a1－Sp^a1-, or-CH of the above-mentioned alkyl group₂-canSubstituted by-O-, -COO-, -C (═ O) -, -OCO-, -CH ═ CH-,

r is as defined above^t1Represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or may be substituted with Z^t1A linear or branched alkylene group having 1 to 8 carbon atoms bonded thereto, or Z and Z may be bonded thereto^t1A linear or branched alkenylene group having 2 to 8 carbon atoms bonded thereto, wherein Z is^t2Represents a single bond, -CH of a linear or branched alkylene group having 1 to 18 carbon atoms or a linear or branched alkenylene group having 2 to 18 carbon atoms₂-may be replaced by-O-, -COO-, -C (═ O) -, -OCO-,

Z^t1represents a single bond, -CH of a straight-chain or branched alkylene group having 1 to 18 carbon atoms or a straight-chain or branched alkenylene group having 2 to 18 carbon atoms₂-may be replaced by-O-, -COO-, -C (═ O) -, -OCO-, in such a manner that oxygen atoms are not directly adjacent to each other, and, when X is used^t1is-Z^t2－O－R^atGroup and R^atIn the case of alkylene or alkenylene, Z may be^t1With R^t1Bonding is carried out on the raw materials,

W^t0represents a linear or branched alkylene group having 1 to 18 carbon atoms, the alkylene group having a group of-CH₂-may be replaced by-O-, -CH-, -COO-, -C- (O) -, -OCO-in such a manner that oxygen atoms are not directly adjacent to each other, and further, hydrogen atoms of the above alkylene group may be replaced by general formula (T),

W^t1represents a single bond or a linear or branched alkylene group, -CH of the alkylene group₂-may be replaced by-O-, -COO-, -C (═ O) -, -OCO-,

n^t1represents an integer of 0 to 4 inclusive,

hydrogen atoms in the molecule may be substituted with the polymerizable group P^a1－Sp^a1-,' representsA bonding bond to a mesogenic group, a polymerizable group, a bending group or a spacer. )

In the above general formula (T), X is preferred^t1Represents a linear or branched alkyl group having 1 to 17 carbon atoms, -NH₂or-Z^t2－O－R^t1A hydrogen atom in the alkyl group may be substituted by a cyano group, P^a1－Sp^a1-, the above-mentioned R^t1Represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or may be substituted with Z^t1A linear or branched alkylene group having 1 to 8 carbon atoms bonded thereto, or Z and Z may be bonded thereto^t1A linear or branched alkenylene group having 2 to 8 carbon atoms bonded thereto, wherein Z is^t2Represents a single bond, -CH of a linear or branched alkylene group having 1 to 18 carbon atoms or a linear or branched alkenylene group having 2 to 18 carbon atoms₂The oxygen atoms may be replaced by-O-, -COO-, -C (. ═ O) -, -OCO-in such a manner that the oxygen atoms are not directly adjacent to each other.

Examples of the form in which the adsorbing group (general formula (T)) in the general formula (T) may be substituted with the adsorbing group (general formula (T)) include a group represented by the general formula (T).

[ solution 93]

(in the above general formula (t), X^t1、Z^t1、W^t1And n^t1The same as the symbols in the above general formula (T),

W^t2represents a single bond or an organic group having a valence of 2 to 4,

m^t1represents an integer of 1 to 3 inclusive, and hydrogen atoms in the molecule may be substituted with the polymerizable group P^a1－Sp^a1-. )

-W in the above general formula (t)^t2-Any "represents: w^t2Represents a single bond to a polyvalent group, and the bond is 1-polyvalent (Any).

In the general formula (t), the organic group having a valence of 2 to 4 means: a radical in which 2 to 4 hydrogen atoms are removed from an organic compound by forming the organic compound into a 2 to 4-valent group to form a group having a chemical structure.

In the above general formula (t), as the organic group having a valence of 2 to 4, -W^t2Any is preferably a chain organic group, and examples thereof include: a linear or branched alkylene group having 1 to 10 carbon atoms (the alkylene group having-CH)₂The alkylene group may be substituted with-O-, -COO-, -C (. quadrature.O) -, -OCO-) or a linear or branched polyvalent group having 1 to 10 carbon atoms (the alkylene group has-CH-)₂The "oxygen atom" may be replaced by-O-, -COO-, -C (═ O) -, -OCO-), -PH-, -POH-, -NH-, a nitrogen atom, a phosphorus atom, or the like, so that oxygen atoms are not directly adjacent to each other. The alkylene polyvalent group is a group having a valence of 3 or 4 obtained by further removing 1 to 2 hydrogen atoms from an alkylene group, and is a group having a valence of 3 to 4 in which the hydrocarbon chain has a free valence.

The group represented by the above general formula (T) is W in the general formula (T)^t0As a preferable form of the group represented by the above general formula (T), for example, when W is^t2In the case of an organic group having a valence of 3, i.e. m^t1’Is 2 and W^t2In the case of a nitrogen atom or an alkylene polyvalent group, for example, the following general formula (t-a) or (t-b) can be mentioned.

[ solution 94]

(in the above formulae (t-a) and (t-b), R^tcA hydrogen atom, a linear or branched alkyl group having 1 to 10 carbon atoms, or a polymerizable group P^a1－Sp^a1-represents a group of atoms represented by,

Z^t1and Z^t1’Each independently represents and communicates withZ in the formula (T)^t1The same meaning is given to the same person,

X^t1and X^t1’Each independently represents Z in the general formula (T)^t1The same meaning is given to the same person,

W^t1represents W in the general formula (T)^t1The same meaning is given to the same person,

n^t1and n^t1’Each independently represents n in the general formula (T)^t1The same meaning is given to the same person,

hydrogen atoms in the molecule may be substituted with the polymerizable group P^a1－Sp^a1-. )

In the formula (t), for example when-W^t2In the case where Any is a 4-valent organic group, i.e. m^t1’Is 3, -W^t2when-Any is an alkylene polyvalent group, for example, the following general formula (t-c) may be mentioned.

[ solution 95]

(in the above formula (t-c), Z^t1、Z^t1’And Z^t1"independently of one another" represents a group represented by Z in the general formula (T)^t1The same meaning is given to the same person,

X^t1、X^t1’and X^t1"each independently represents the same as X in the general formula (T)^t1The same meaning is given to the same person,

W^t1represents W in the general formula (T)^t1The same meaning is given to the same person,

n^t1、n^t1’and n^t1"independently of one another denotes a group represented by the formula (T)^t1The same meaning is given to the same person,

hydrogen atoms in the molecule may be substituted with the polymerizable group P^a1－Sp^a1-. )

In the above general formula (t), m^t1’Preferably 1 or 2, m^t1’More preferably 1. Among the forms represented by the above general formulae (t-a), (t-b) and (t-c), the form represented by the above general formula (t-a) is preferable.

In the above general formula (t), -W^t2Any is preferably a single bond or a 2-to 3-valent organic group, and more preferably a single bond, a straight-chain or branched alkylene group having 1 to 8 carbon atoms (the alkylene group has-CH₂-may be replaced by-O-in such a way that the oxygen atoms are not directly adjacent. ) And a linear or branched alkanetriyl group having 1 to 8 carbon atoms (Japanese: アルカントリイル radical) (the-CH radical of this alkanetriyl radical₂-may be replaced by-O-in such a way that the oxygen atoms are not directly adjacent. ) Or a linear or branched alkyl-subunit (the alkyl-subunit having-CH)₂-may be replaced by-O-, in such a way that the oxygen atoms are not directly adjacent. For example, the following groups can be mentioned.

[ solution 96]

(in the above formula, R^tcRepresents an alkyl group having 1 to 8 carbon atoms or a polymerizable group (P)^a1－Sp^a1－)，n^t0Represents an integer of 1 to 7, represents a bond) and W may be^t2Is substituted with a polymerizable group (P)^a1－Sp^a1－)。

In the above general formula (t), m^t1Preferably represents 1 or 2.

In the above general formula (T) or general formula (T), W^t1Preferably represents a single bond, or a linear or branched alkylene group having 1 to 8 carbon atoms (represents a single bond, or a linear or branched alkylene group, -CH of the alkylene group₂The oxygen atoms may be replaced by-O-, -COO-, -C (. ═ O) -, -OCO-in such a manner that the oxygen atoms are not directly adjacent to each other. ) More preferably represents a single bond or a linear or branched alkylene group having 1 to 7 carbon atoms (represents a single bond or a linear or branched alkylene group, -CH of the alkylene group)₂May be in an oxygen atom-free phaseThe adjacent mode is replaced by-O-. ). In addition, W^t1May be bonded in place of a hydrogen atom of a mesogenic group, a polymerizable group or a bending group.

In the above formula (T) or formula (T), X is included^t1Is not in contact with Z^t1Form of linkage (chain group), and X^t1And Z^t1Form a ring (cyclic group) by bonding.

In the former form, the alkyl group is preferably a linear or branched alkyl group having 1 to 8 carbon atoms or a-NH group₂、－Z^t2－O－R^t1A C1-7 linear or branched alkyl group substituted with a group or a cyano group, more preferably a C1-7 linear or branched alkyl group, a-Z-substituted alkyl group^t2－O－R^t1A cyano-substituted straight-chain or branched alkyl group having 1 to 7 carbon atoms. In the former form, R is as defined above^t1Each independently represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, and Z is^t2Preferably a single bond, a linear or branched alkylene group having 1 to 10 carbon atoms, or a linear or branched alkenylene group having 2 to 10 carbon atoms (the alkylene group or-CH of the alkenylene group)₂The oxygen atoms may be replaced by-O-, -COO-, -C (. ═ O) -, -OCO-in such a manner that the oxygen atoms are not directly adjacent to each other. ).

In the latter form, nt1 is preferably 1 or more, and X is preferably^t1is-Z^t2－O－R^t1，R^t1Is a linear or branched alkylene group having 1 to 7 carbon atoms or a linear or branched alkenylene group having 2 to 7 carbon atoms, and Z is^t1With R^t1The linkage is preferably represented by the following general formula (T'), for example.

[ solution 97]

(in the above formula (T'), R^t1’Each independently represents a linear or branched alkylene group having 1 to 8 carbon atoms, or a carbon atomA linear or branched alkenylene group having 2 to 8 atoms,

Z^t2’each independently represents a single bond, a linear or branched alkylene group having 1 to 10 carbon atoms, or a linear or branched alkenylene group having 2 to 10 carbon atoms, -CH of the alkylene group or the alkenylene group₂-may be replaced by-O-, -COO-, -C (═ O) -, -OCO-,

Z^t1’represents a linear or branched alkylene 3-valent group having 1 to 18 carbon atoms, or a linear or branched alkenylene 3-valent group having 1 to 18 carbon atoms, -CH of the alkylene 3-valent group or alkenylene 3-valent group₂-may be replaced by-O-, -COO-, -C (═ O) -or OCO-in such a way that the oxygen atoms are not directly adjacent to each other,

W^t2represents a single bond or an organic group having a valence of 2 to 4,

－W^t1-CH represents a single bond, or a linear or branched alkylene group or a-CH of the alkylene group₂-may be replaced by-O-, -COO-, -C (═ O) -, -OCO-,

n^t1’represents an integer of 1 to 4 inclusive,

m^t1’represents an integer of 1 to 3 inclusive, and hydrogen atoms in the molecule may be substituted with the polymerizable group P^a1－Sp^a1-. )

The alkylene group having a valence of 3 means a group having a valence of 3 obtained by further removing 1 hydrogen atom from an alkylene group. The 3-valent alkenylene group refers to a group having a valence of 3 obtained by further removing 1 hydrogen atom from the alkenylene group, and includes so-called 3-valent groups having a free valence in a hydrocarbon chain, such as an alkanetriyl group or an alkyl-ylidene group.

In the above formula (T), when X is^t1Is not in contact with Z^t1In the form of a linkage (chain radical), Z^t1Represents a single bond, a straight-chain or branched alkylene group having 1 to 12 carbon atoms, or a C212 linear or branched alkenylene groups, -CH of the alkylene group₂-may be replaced by-O-, -COO-, -C (═ O) -, -OCO-.

In the above formula (T), when X is^t1Is a reaction with Z^t1In the case of the form of the bond (cyclic group), it is represented by the above general formula (T').

In the general formula (T), nt1 preferably represents an integer of 0 to 3, and nt1 more preferably represents an integer of 0 to 2.

The general formula (T) is preferably at least 1 selected from the group consisting of cyclic groups represented by general formulas (T-1-1) to (T-4-1) and chain groups represented by general formulas (T-5-1) to (T-6-1). When the adsorptive group represented by the general formula (T) of the present invention is a cyclic group, it is preferably represented by the general formula (T-1-1) or the general formula (T-2-1) from the viewpoints of adsorption ability and compatibility with a liquid crystal composition. When the chain group is selected as the adsorbing group represented by the general formula (T) in the present invention, the group is preferably represented by the general formula (T-5-1) or the general formula (T-6-1) from the viewpoints of adsorption ability and stability to a liquid crystal composition.

[ solution 98]

(in the formula, X^taAnd X^tbEach independently represents-O-, -S-or-CH₂－，

R^t5Represents a linear or branched alkyl group having 1 to 8 carbon atoms, a cyanolated alkyl group or a linear or branched alkoxy group having 1 to 8 carbon atoms, at least 2 or more of these alkyl groups being represented by-CH₂-may be replaced by-CH ═ CH-, -C.ident.C-, -O-or-NH-in such a way that the oxygen atoms are not directly adjacent,

Z^t3represents a single bond, -CH of a linear or branched alkylene group having 1 to 18 carbon atoms or a linear or branched alkenylene group having 2 to 18 carbon atoms₂Can be placed in such a way that the oxygen atoms are not directly adjacentBy substitution of-O-, -COO-, -C (═ O) -, -OCO-,

W^t2represents a single bond or an organic group having a valence of 1 to 4,

W^t1represents a single bond or a linear or branched alkylene group,

n^t1represents an integer of 0 to 4 inclusive,

mt1 represents an integer of 1 to 3 inclusive, and hydrogen atoms in the molecule may be substituted with the polymerizable group P^a1－Sp^a1-. )

In the above general formulae (T-1-1) to (T-4-1), X is preferably X^taOr X^tbAny of them is-O-, more preferably X^taAnd X^tbis-O-.

Specific examples of the above general formulae (T-1-1) to (T-4-1) include the following groups.

[ solution 99]

The above-mentioned general formula (T-5-1) preferably represents the general formula (T-5-2).

[ solution 100]

(in the above general formula (T-5-2), W^t1Represents W in the above general formula (T-5)^t1Same meaning as R^t51And R^t52Each independently represents a linear or branched alkyl group having 1 to 8 carbon atoms, orCyanoalkyl radicals, at least 2 or more of these alkyl radicals being-CH₂-may be replaced by-CH ═ CH-, -C ≡ C-, -O-or-NH-in such a way that the oxygen atoms are not directly adjacent, R^tcWith a hydrogen atom, an alkyl group having 1 to 7 carbon atoms or a polymerizable group P^a1－Sp^a1-represents, n^t1、n^t2And n^t3Each independently represents 0 or 1, and hydrogen atoms in the molecule may be substituted by P^a1－Sp^a1－。)

Specific examples of the above general formula (T-5-1) include the following groups.

[ solution 101]

[ solution 102]

[ solution 103]

[ solution 104]

(in the above formula, R^tcWith a hydrogen atom, an alkyl group having 1 to 7 carbon atoms or a polymerizable group P^a1－Sp^a1Represents that hydrogen atoms in the molecule may be substituted by the polymerizable group P^a1－Sp^a1-. ) (indicates a bonding bond, and (indicates a bond,bonded to a mesogenic group, a polymerizable group, a bending group or a spacer. )

Specific examples of the above general formula (T-6-1) include the following examples.

[ solution 105]

In the self-aligning compound of the present invention, it is preferable that the polar element contained in the adsorptive group and the polar element contained in the polymerizable group are localized. The adsorptive group is an important structure for vertically aligning the liquid crystal composition, and the adsorptive group is adjacent to the polymerizable group, whereby more favorable alignment properties can be obtained and favorable solubility in the liquid crystal composition can be exhibited. Specifically, the mesogenic group preferably has a polymerizable group and an adsorptive group on the same ring. In this case, the following are included: a form in which 1 or more polymerizable groups and 1 or more adsorptive groups are bonded to the same ring; and at least one of 1 or more polymerizable groups or at least one of 1 or more adsorbing groups, one of which is bonded to the other, and which has a form in which the polymerizable group and the adsorbing group are on the same ring. In this case, the hydrogen atom of the spacer of the polymerizable group may be substituted with the adsorptive group, and the adsorptive group may further include: the hydrogen atom of the molecule of the adsorbing group is bonded to the spacer of the polymerizable group.

In the self-aligning compound of the present invention, 1 or more hydrogen atoms of the polymerizable group may be substituted with an adsorbing group. In this case, a preferable embodiment includes a polymerizable group P^a1Or optionally an SP attached to the polymerizable group^a11 or more ofThe form in which a hydrogen atom is substituted with an adsorptive group, and a more preferred form is a polymerizable group (P)^a1－Sp^a1-) wherein 1 or more hydrogen atoms are substituted with an adsorption group represented by the general formula (T).

For example, the adsorption group and the polymerizable group are linked to each other in a suitable form, for example, by the following formula (T-1-1.1), (T-6-1.1) or (T-5-1.1).

[ solution 106]

(in the above formula, R^t11a、R^t16aAnd R^t151aEach independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R^t151bAnd R^t151cEach independently represents an alkyl group having 1 to 3 carbon atoms or a cyanoalkylated alkyl group having 1 to 3 carbon atoms,

X^aand X^brepresents-O-, -S-or-CH₂－，

L^t151aAnd L^t151bEach independently represents a methylene group, an ethylene group, a propylene group, an ethylidene group (Japanese: ビニリデン group), a 1, 2-ethenylene group (Japanese: ビニレン group), an isopropenylene group (Japanese: イソプロペニレン group) or an ethylidene group (Japanese: エチリデン group),

n^t11c，n^t151c、n^t16c、n^t151d、n^t151e、n^t151fand n^t151gEach independently represents 0 or 1, n^t11a、n^t11b、n^t16a、n^t16b、n^t151aAnd n^t151bEach independently represents an integer of 1 to 11, and represents a bonding bond to a mesogenic group. )

In the above formula (T-1-1.1), X is preferred^aOr X^bAny of them is-O-, more preferably X^taAnd X^tbis-O-.

Among the above-mentioned formula (T-5-1.1), L is preferred^t151aAnd L^t151bEach independently is a methylene group,Ethylene, vinylidene, 1, 2-vinylidene, isopropenyl or ethylidene.

In the above formulae (T-1-1.1), (T-6-1.1) and (T-5-1.1), n^t11a、n^t11b、n^t16a、n^t16b、n^t151aAnd n^t151bEach independently is preferably an integer of 1 to 8, more preferably an integer of 1 to 5.

The bending group of the present invention has a function of inducing orientation of liquid crystal molecules, and preferably represents a linear or branched alkylene group having 1 to 20 carbon atoms, more preferably a linear alkylene group having 1 to 20 carbon atoms, and still more preferably a linear alkylene group having 2 to 15 carbon atoms. In addition, 1 or 2 or more-CH which are not adjacent to each other in the alkylene group₂-may each be independently substituted by-CH ═ CH-, -C ≡ C-, -O-, -CO-, -COO-, or-OCO-.

The above-mentioned bending group is preferably bonded to the mesogenic group from the viewpoint that the self-aligning compound has so-called amphiphilicity with respect to the liquid crystal layer.

In the self-aligning compound of the present invention, the number of the bending groups is preferably 1 to 6, more preferably 1 to 4, and still more preferably 1 to 3.

In the above-mentioned self-aligning compound, it is preferable that a polar portion such as an adsorbing group or a polymerizable group which is not easily fused with the liquid crystal layer and a non-polar portion such as a mesogenic group or a bending group which is easily fused with the liquid crystal layer are present unevenly within the molecule, and it is preferable that the compound exhibits amphiphilicity to the so-called liquid crystal layer. Therefore, the self-aligning compound of the present invention is preferably of the following structure: the mesogenic group has a bending group for aligning liquid crystal molecules at one end, and a polymerizable group and an adsorbing group at the other end. We consider that: since the interface free energy is high near the interface between the liquid crystal layer and the substrate, a substance having a nonpolar portion having affinity for the liquid crystal layer and a polar portion having low affinity for the liquid crystal layer in one molecule is arranged on the interface, and the interface free energy is reduced.

The lower limit of the content of the self-aligning compound in the liquid crystal composition of the present invention is preferably 0.02 mass%, preferably 0.03 mass%, preferably 0.04 mass%, preferably 0.05 mass%, preferably 0.06 mass%, preferably 0.07 mass%, preferably 0.08 mass%, preferably 0.09 mass%, preferably 0.1 mass%, preferably 0.12 mass%, preferably 0.15 mass%, preferably 0.17 mass%, preferably 0.2 mass%, preferably 0.22 mass%, preferably 0.25 mass%, preferably 0.27 mass%, preferably 0.3 mass%, preferably 0.32 mass%, preferably 0.35 mass%, preferably 0.37 mass%, preferably 0.4 mass%, preferably 0.42 mass%, preferably 0.45 mass%, preferably 0.5 mass%, preferably 0.55 mass%. The upper limit of the content of the polymerizable compound represented by the general formula (I) in the liquid crystal composition of the present invention is preferably 2.5% by mass, preferably 2.3% by mass, preferably 2.1% by mass, preferably 2% by mass, preferably 1.8% by mass, preferably 1.6% by mass, preferably 1.5% by mass, preferably 1% by mass, preferably 0.95% by mass, preferably 0.9% by mass, preferably 0.85% by mass, preferably 0.8% by mass, preferably 0.75% by mass, preferably 0.7% by mass, preferably 0.65% by mass, preferably 0.6% by mass, preferably 0.55% by mass, preferably 0.5% by mass, preferably 0.45% by mass, preferably 0.4% by mass.

A particularly suitable specific example of the self-aligning compound of the present invention is a compound represented by the following general formula (al-1-1).

[ solution 107]

(in the above general formula (al-1-1), R^al3Represents a linear alkyl group having 1 to 12 carbon atoms, in which 1 or non-adjacent 2 or more-CH₂-may be substituted by-O-or-CH ═ CH-,

L^al5、L^al6、L^al7and L^al8Each independently represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a halogen atom or P^a1－Sp^a1-, in the alkyl group, 1Or non-adjacent 2 or more-CH₂-may be substituted by-O-or-CH ═ CH-,

ring A^al3Represents 1, 4-cyclohexylene or 1, 4-phenylene,

R^alaor R^albEach independently represents a hydrogen atom or the above-mentioned P^a1－Sp^a1－，R^alaOr R^albAt least one of which represents the above-mentioned P^a1－Sp^a1－，

Z^al3Represents a single bond, -CH₂－CH₂－、－CH₂-O-or O-CH₂－，

R^al4Represents an adsorption group represented by the above general formula (T),

p^a13and p^a14Each independently represents 0 or 1. )

Preferably, L in the above formula (al-1-1)^al7And L^al8One of them represents an alkyl group having 1 to 5 carbon atoms.

In the above general formula (al-1-1), R^alaAnd R^albPreferably represents the above-mentioned P^a1－Sp^a1－。

In the above general formula (al-1-1), R^al4Preferred are the above-mentioned general formulae (T-1-1) to (T-7-1) or the formulae (T-1-1.1), (T-6-1.1) or (T-5-1.1).

Preferred examples of the compound include compounds represented by the following formulae (A L-1.1) to (A L-3.6).

[ solution 108]

[ solution 109]

[ solution 110]

[ solution 111]

[ solution 112]

[ solution 113]

[ chemical formula 114]

The composition of the present invention may further contain 1 or 2 or more compounds (Q) as additives for improving reliability. The compound (Q) preferably has the following structure.

[ solution 115]

(in the formula, R^QRepresents a hydroxyl group, a hydrogen atom, a straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms, one or two or more CH groups in the alkyl group₂The radicals may be substituted by-O-, -CH ═ CH-, -CO-, -OCO-, -COO-, -C.ident.C-, -CF-in such a way that the oxygen atoms are not directly adjacent to one another₂O－、－OCF₂-a substitution, bonding at ×, to other structures. )

R^QRepresents a straight-chain or branched alkyl group having 1 to 22 carbon atoms, one or two or more CH groups in the alkyl group₂The radicals being substituted by-O-, -CH-in such a way that the oxygen atoms are not directly adjacent to one anotherCH－、－CO－、－OCO－、－COO－、－C≡C－、－CF₂O－、－OCF₂-substitution, preferably of a linear alkyl, linear alkoxy, one CH with 1 to 10 carbon atoms₂Straight-chain alkyl, branched-chain alkoxy, one CH substituted by-OCO-or-COO-)₂The branched alkyl group in which the group is replaced with-OCO-or-COO-, is more preferably a linear alkyl group having 1 to 20 carbon atoms, or a CH₂Straight-chain alkyl, branched-chain alkoxy, one CH substituted by-OCO-or-COO-)₂A branched alkyl group substituted with-OCO-or-COO-. M^QRepresents trans-1, 4-cyclohexylene, 1, 4-phenylene or a single bond, preferably trans-1, 4-cyclohexylene or 1, 4-phenylene.

More specifically, the compound (Q) is preferably a compound represented by the following general formula (Q-a) to general formula (Q-d).

[ solution 116]

In the formula, R^Q1Preferably a linear or branched alkyl group of 1 to 10 carbon atoms, R^Q2Preferably a linear or branched alkyl group of 1 to 20 carbon atoms, R^Q3Preferably a straight-chain alkyl group, a branched-chain alkyl group, a straight-chain alkoxy group or a branched-chain alkoxy group having 1 to 8 carbon atoms, L^QPreferably a linear alkylene group or a branched alkylene group having 1 to 8 carbon atoms. Among the compounds represented by the general formulae (Q-a) to (Q-d), the compounds represented by the general formulae (Q-c) and (Q-d) are more preferable.

In the composition of the present invention, 1 or 2 kinds of compounds represented by the general formula (Q) are preferably contained, and 1 to 5 kinds are further preferably contained, and the content thereof is preferably 0.001 to 1%, more preferably 0.001 to 0.1%, and particularly preferably 0.001 to 0.05%.

Specifically, the antioxidants and light stabilizers usable in the present invention are preferably compounds represented by the following (Q-1) to (Q-44).

[ solution 117]

[ chemical formula 118]

[ solution 119]

[ chemical formula 120]

[ solution 121]

(wherein n represents an integer of 0 to 20.)

(liquid Crystal display element)

The liquid crystal composition of the present embodiment is applied to a liquid crystal display element. Hereinafter, an example of the liquid crystal display element of the present embodiment will be described with reference to fig. 1 and 2 as appropriate.

Fig. 1 is a diagram schematically showing the structure of a liquid crystal display element. In fig. 1, the respective components are shown as being separated from each other for convenience of explanation. As shown in fig. 1, the liquid crystal display element 1 of the present embodiment includes a first substrate 2 and a second substrate 3 disposed to face each other, and a liquid crystal layer 4 provided between the first substrate 2 and the second substrate 3, and the liquid crystal layer 4 is formed using the liquid crystal composition of the present embodiment.

A pixel electrode layer 5 is formed on the first substrate 2 on the liquid crystal layer 4 side. The second substrate 3 has a common electrode layer 6 formed on the liquid crystal layer 4 side. The first substrate 2 and the second substrate 3 may be sandwiched by a pair of polarizing plates 7 and 8. A color filter 9 may be further provided on the liquid crystal layer 4 side of the second substrate 3.

That is, the liquid crystal display element 1 of one embodiment has a structure in which a first polarizing plate 7, a first substrate 2, a pixel electrode layer 5, a liquid crystal layer 4 containing a liquid crystal composition, a common electrode layer 6, a color filter 9, a second substrate 3, and a second polarizing plate 8 are sequentially stacked.

The first substrate 2 and the second substrate 3 are formed of a material having flexibility, such as glass or plastic. At least one of the first substrate 2 and the second substrate 3 is formed of a transparent material, and the other is formed of a transparent material, or an opaque material such as metal or silicon. The first substrate 2 and the second substrate 3 are bonded to each other with a sealing material such as an epoxy thermosetting composition and a sealing material disposed in the peripheral region, and for the purpose of maintaining the distance between the substrates, for example, a granular spacer such as glass particles, plastic particles, or alumina particles, or a spacer made of resin by photolithography may be disposed therebetween.

The first polarizing plate 7 and the second polarizing plate 8 can adjust the polarization axes of the respective polarizing plates to improve the viewing angle and the contrast, and preferably have transmission axes orthogonal to each other so that the transmission axes operate in the normally black mode. In particular, it is preferable that either one of the first polarizing plate 7 and the second polarizing plate 8 is disposed so as to have a transmission axis parallel to the alignment direction of the liquid crystal molecules when no voltage is applied.

From the viewpoint of preventing light leakage, the color filter 9 is preferably formed into a black matrix, and a black matrix (not shown) is preferably formed in a portion corresponding to the thin film transistor.

The black matrix may be provided on the substrate opposite to the array substrate together with the color filter, may be provided on the array substrate side together with the color filter, or may be separately provided, that is, the black matrix is provided on the array substrate and the color filter is provided on the other substrate. The black matrix may be provided separately from the color filters, or may be formed by overlapping the respective colors of the color filters to reduce the transmittance.

Fig. 2 is an enlarged plan view of a region surrounded by an I-line, which is a part of the pixel electrode layer 5 formed on the first substrate 2 in fig. 1. As shown in fig. 2, in the pixel electrode layer 5 including a thin film transistor formed on the surface of the first substrate 2, a plurality of gate bus lines (japanese: ゲートバスライン)11 for supplying a scanning signal and a plurality of data bus lines (japanese: データバスライン)12 for supplying a display signal are arranged in a matrix shape while intersecting with each other. Fig. 2 shows only a pair of gate bus lines 11 and a pair of data bus lines 12 and 12.

A unit pixel of the liquid crystal display element is formed by a region surrounded by the plurality of gate bus lines 11 and the plurality of data bus lines 12, and a pixel electrode 13 is formed in the unit pixel. The pixel electrode 13 includes: the fish bone structure includes two main portions that are orthogonal to each other and form a cross shape, and a plurality of branch portions that extend from the main portions. Further, between the pair of gate bus lines 11, Cs electrodes 14 are provided substantially in parallel with the gate bus lines 11. In addition, a thin film transistor including a source electrode 15 and a drain electrode 16 is provided near an intersection where the gate bus line 11 and the data bus line 12 intersect with each other. The drain electrode 16 is provided with a contact hole 17.

The gate bus line 11 and the data bus line 12 are preferably formed of a metal film, more preferably of Al, Cu, Au, Ag, Cr, Ta, Ti, Mo, W, Ni, or an alloy thereof, and still more preferably of Mo, Al, or an alloy thereof.

The pixel electrode 13 is preferably a transparent electrode in order to improve transmittance. The transparent electrode is formed by sputtering or the like of an Oxide semiconductor (ZnO, InGaZnO, SiGe, GaAs, IZO (Indium Zinc Oxide), ito (Indium Tin Oxide), SnO, TiO, AZTO (AlZnSnO), or the like). In this case, the thickness of the transparent electrode may be 10 to 200 nm. In addition, in order to reduce the resistance, the transparent electrode may be formed as a polycrystalline ITO film by firing an amorphous ITO film.

In the liquid crystal display device of the present embodiment, the pixel electrode layer 5 and the common electrode layer 6 can be formed by forming wirings on the first substrate 2 and the second substrate 3 by sputtering a metal material such as Al or an alloy thereof. The color filter 9 can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. In the case of describing a method for producing a color filter by a pigment dispersion method as an example, a curable coloring composition for a color filter is applied onto the transparent substrate, subjected to patterning treatment, and then cured by heating or light irradiation. This process is performed for each of 3 colors of red, green, and blue, whereby a pixel portion for a color filter can be manufactured. The color filter 9 may be provided on the substrate side having the TFT or the like.

The first substrate 2 and the second substrate 3 are opposed to each other so that the pixel electrode layer 5 and the common electrode layer 6 are located inside, and at this time, the distance between the first substrate 2 and the second substrate 3 can be adjusted by a spacer. In this case, the thickness of the liquid crystal layer 4 is preferably adjusted to be, for example, 1 to 100 μm.

When the polarizing plates 7 and 8 are used, the product of the refractive index anisotropy Δ n of the liquid crystal layer 4 and the thickness of the liquid crystal layer 4 is preferably adjusted so that the contrast becomes maximum. In the case of two polarizing plates 7 and 8, the viewing angle and the contrast can be adjusted to be good by adjusting the polarization axes of the respective polarizing plates. In addition, a retardation film for enlarging the viewing angle can also be used. Thereafter, a sealant such as an epoxy thermosetting composition is screen-printed on the substrates so as to provide a liquid crystal injection port, the substrates are bonded to each other, and the sealant is thermally cured by heating.

As a method for sandwiching the composition between the 2 substrates 2 and 3, a general vacuum injection method or a One Drop Fill (ODF) method can be used, and although no Drop mark is generated in the vacuum injection method, there is a problem that an injection mark remains, and in this embodiment, the composition can be more suitably used for a display element manufactured by the ODF method. In the liquid crystal display element production process of the ODF method, an epoxy-based photo-thermal sealant is drawn in a closed bank shape with a curable sealant or the like on either a base plate or a front plate (japanese patent No. フロントプレーン) using a dispenser, a predetermined amount of the composition is dropped under degassing, and then the front plate and the base plate are joined to each other, whereby a liquid crystal display element can be produced. In the present embodiment, in the ODF method, the occurrence of dropping marks when dropping the liquid crystal composition onto the substrate can be suppressed. The drop mark is defined as a phenomenon in which white appears on a drop of the liquid crystal composition in the case of black display.

In addition, in the process of manufacturing a liquid crystal display element by the ODF method, it is necessary to drop an optimum amount of liquid crystal to be injected according to the size of the liquid crystal display element, and the liquid crystal composition of the present embodiment has little influence on, for example, a sudden pressure change or impact in a dropping device generated at the time of dropping liquid crystal, and can stably continue dropping liquid crystal for a long time, and therefore, the yield of the liquid crystal display element can be kept high. In particular, since the optimum amount of liquid crystal injected is small, it is difficult to control the deviation from the optimum value within a certain range, and a stable discharge amount of liquid crystal material can be realized even in a small-sized liquid crystal display device by using the liquid crystal composition of the present embodiment.

When the liquid crystal composition of the present embodiment contains a polymerizable compound, a suitable polymerization rate is preferable as a method for polymerizing the polymerizable compound in order to obtain good alignment performance of the liquid crystal, and therefore, a method of polymerizing by irradiating active energy rays such as a single ultraviolet ray or an electron beam, or by irradiating them in combination or sequentially is preferable. In the case of using ultraviolet rays, either a polarized light source or an unpolarized light source may be used. In addition, when the polymerization is carried out in a state where the composition containing the polymerizable compound is sandwiched between 2 substrates, at least the substrate on the irradiation surface side must be provided with transparency suitable for the active energy ray. In addition, the following means may be used: in the case of light irradiation, only a specific portion is polymerized using a mask, and then the orientation state of the unpolymerized portion is changed by changing conditions such as an electric field, a magnetic field, or temperature, and further, the polymerization is performed by irradiation with an active energy ray. In particular, when ultraviolet exposure is performed, it is preferable to perform ultraviolet exposure while applying an alternating electric field to the composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current with a frequency of 10Hz to 10kHz, more preferably a frequency of 60Hz to 10kHz, the voltage being selected depending on the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the transverse electric field MVA mode, it is preferable to control the pretilt angle to 80 degrees to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably within a temperature range in which the liquid crystal state of the composition of the present embodiment is maintained. The polymerization is preferably carried out at a temperature close to room temperature, i.e., typically at a temperature of 15 to 35 ℃. As the lamp for generating ultraviolet rays, a metal halide lamp, a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, or the like can be used. The wavelength of the ultraviolet light to be irradiated is preferably ultraviolet light in a wavelength region other than the absorption wavelength region of the composition, and the ultraviolet light is preferably intercepted and used as necessary. The intensity of the ultraviolet ray to be irradiated is preferably 0.1mW/cm²～100W/cm²More preferably 2mW/cm²～50W/cm². The energy of the ultraviolet rays to be irradiated may be appropriately adjusted, and is preferably 10mJ/cm²～500J/cm²More preferably 100mJ/cm²～200J/cm². The intensity may be changed when ultraviolet rays are irradiated. The time for irradiating ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, and is preferably 10 seconds to 3600 seconds, and more preferably 10 seconds to 600 seconds.

In the liquid crystal composition of the present embodiment, since the compound (i) does not inhibit the polymerization reaction of the polymerizable compound, the polymerizable compounds are appropriately polymerized with each other, and the unreacted polymerizable compound can be suppressed from remaining in the liquid crystal composition.

In the case of using, for example, the above-mentioned compound (ii) as the polymerizable compound, the obtained liquid crystal display element 1 includes: two substrates 2, 3; a liquid crystal layer 4 containing a liquid crystal composition and a polymer of a compound represented by the general formula (ii) and provided between the two substrates 2 and 3. In this case, it is considered that the polymer of the compound represented by the general formula (ii) is present in the liquid crystal layer 4 on the substrate 2 and 3 side.

The liquid crystal display element 1 may be an active matrix driving liquid crystal display element. The liquid crystal display device 1 may be a PSA type, PSVA type, VA type, IPS type, FFS type, or ECB type liquid crystal display device, and is preferably a PSA type liquid crystal display device.

In the liquid crystal display device of the present embodiment, since the liquid crystal composition containing the compound (i) is used, it is not necessary to provide alignment films such as polyimide alignment films on the liquid crystal layer 4 sides of the first substrate 2 and the second substrate 3. That is, the liquid crystal display element of the present embodiment may be configured such that at least one of the two substrates does not have an alignment film such as a polyimide alignment film.

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