阅读说明：本技术 感光性树脂组成物、感光性树脂层以及彩色滤光片 (Photosensitive resin composition, photosensitive resin layer and color filter ) 是由 辛明晔 张春根 金善大 崔圭汎 柳智铉 于 2020-04-29 设计创作，主要内容包括：本申请提供一种感光性树脂组成物、使用感光性树脂组成物制造的感光性树脂层以及包含感光性树脂层的彩色滤光片,感光性树脂组成物包含：(A)着色剂,包含核-壳结构的染料；(B)粘合剂树脂；(C)光可聚合化合物；(D)光聚合引发剂；以及(E)溶剂,其中核是芳酸菁类化合物且壳由化学式1表示。在化学式1中,每个取代基与说明书中所定义的相同。本申请可改进彩色滤光片的耐久性且具有高亮度和高对比率。[化学式1]<Image he="250" wi="700" file="DDA0002473974880000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>(The application provides a photosensitive resin composition, a photosensitive resin layer manufactured by using the photosensitive resin composition and a color filter comprising the photosensitive resin layer, wherein the photosensitive resin composition comprises: (A) a colorant comprising a core-shell structured dye; (B) a binder resin; (C) a photopolymerizable compound; (D) a photopolymerization initiator; and (E) a solvent, wherein the core is an arylcyanine-based compound and the shell is represented by chemical formula 1. In chemical formula 1Each substituent is as defined in the specification. The present application can improve the durability of a color filter and have high brightness and high contrast ratio. [ chemical formula 1])

1. A photosensitive resin composition comprises

(A) Colorants, including core-shell structured dyes;

(B) a binder resin;

(C) a photopolymerizable compound;

(D) a photopolymerization initiator; and

(E) a solvent, a water-soluble organic solvent,

wherein the core comprises an arylcyanine compound, and

the shell is represented by chemical formula 1:

[ chemical formula 1]

Wherein, in chemical formula 1,

R¹is a hydrogen atom, a halogen atom, a substituted OR unsubstituted C1 to C20 alkyl group OR-OR⁶,

R⁶Is a substituted or unsubstituted C1 to C20 alkyl group, is a bonding position,

R²to R⁵Independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

with the proviso that R¹To R⁵Not simultaneously being a hydrogen atom,

m is an integer of 1 to 10,

n is an integer of 0 to 3, and

L¹and L²Independently a single bond or a substituted or unsubstituted C1 to C10 alkylene.

2. The photosensitive resin composition of claim 1, wherein the shell is represented by chemical formula 2:

[ chemical formula 2]

Wherein, in chemical formula 2,

R¹is a hydrogen atom, a halogen atom, a substituted OR unsubstituted C1 to C20 alkyl group OR-OR⁶,

R⁶Is a substituted or unsubstituted C1 to C20 alkyl group, is a bonding position,

R²to R⁵Independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

with the proviso that R¹To R⁵Not simultaneously being a hydrogen atom, and

n is an integer of 0 to 3.

3. The photosensitive resin composition of claim 1, wherein the shell is represented by one of chemical formulas 2-1 to 2-3:

[ chemical formula 2-1]

[ chemical formula 2-2]

[ chemical formulas 2-3]

Wherein, in chemical formulas 2-1 to 2-3,

R²to R⁵Independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

R⁷and R⁸Independently a halogen atom, a substituted OR unsubstituted C1 to C20 alkyl group OR-OR⁶,

R⁶Is a substituted or unsubstituted C1 to C20 alkyl group, which is a bonding position.

4. The photosensitive resin composition of claim 1, wherein the shell has a cage width of 6.5 to 7.5 angstroms.

5. The photosensitive resin composition of claim 1, wherein the shell is represented by one of chemical formulas 3-1 to 3-4:

[ chemical formula 3-1]

[ chemical formula 3-2]

[ chemical formulas 3-3]

[ chemical formulas 3-4]

6. The photosensitive resin composition of claim 1, wherein the arylcyanine based compound is represented by chemical formula 4:

[ chemical formula 4]

Wherein, in chemical formula 4,

R⁹to R¹²Independently a substituted or unsubstituted C1 to C20 alkyl, a substituted or unsubstituted C3 to C20 cycloalkyl, or a substituted or unsubstituted C6 to C20 aryl.

7. The photosensitive resin composition of claim 1, wherein the core has a length of 1 to 3 nanometers.

8. The photosensitive resin composition of claim 1, wherein the core has a maximum absorption peak in a wavelength of 530 to 680 nanometers.

9. The photosensitive resin composition of claim 1, wherein the arylcyanine based compound is represented by one of chemical formulas 4-1 to 4-6:

[ chemical formula 4-1]

[ chemical formula 4-2]

[ chemical formulas 4-3]

[ chemical formulas 4-4]

[ chemical formulas 4-5]

[ chemical formulas 4-6]

10. The photosensitive resin composition of claim 1, wherein the core-shell structured dye comprises the core and the shell in a molar ratio of 1: 1.

11. The photosensitive resin composition of claim 1, wherein the core-shell structured dye is a green dye.

12. The photosensitive resin composition of claim 1, wherein the colorant further comprises a pigment.

13. The photosensitive resin composition of claim 1, wherein the photosensitive resin composition comprises

Based on the total amount of the photosensitive resin composition,

0.5 to 20 weight percent of the colorant;

0.1 to 30% by weight of the binder resin;

0.1 to 30% by weight of the photopolymerizable compound;

0.1 to 5% by weight of the photopolymerization initiator; and

the balance of the solvent.

14. The photosensitive resin composition of claim 1, wherein the photosensitive resin composition further comprises malonic acid, 3-amino-1, 2-propanediol, a silane-based coupling agent comprising vinyl or (meth) acryloyloxy, a leveling agent, a surfactant, a radical polymerization initiator, or a combination thereof.

15. A photosensitive resin layer produced using the photosensitive resin composition described in any one of claims 1 to 14.

16. A color filter comprising the photosensitive resin layer according to claim 15.

Technical Field

The present disclosure relates to a photosensitive resin composition, a photosensitive resin layer using the photosensitive resin composition, and a color filter including the photosensitive resin layer.

Background

Among many types of displays, liquid crystal displays have advantages in brightness, thinness, low cost, low operating power consumption, and improved adhesion to integrated circuits, and have been more widely used for laptop computers, monitors, and TV screens. The liquid crystal display device includes: a lower substrate on which a black matrix, a color filter, and an ITO pixel electrode are formed; and an upper substrate on which an active circuit portion including a liquid crystal layer, a thin film transistor, and a capacitor layer and an ITO pixel electrode are formed. The color filter is formed in the pixel region by sequentially stacking a plurality of pixel portions, which are generally formed of three primary colors such as red (R), green (G), and blue (B) in a predetermined order, to form each pixel, and the black matrix layer is disposed in a predetermined pattern on the transparent substrate to form a boundary between the pixels.

The pigment dispersion method is one of methods of forming a color filter, and provides a colored thin film by repeating a series of processes such as: the method includes coating a photopolymerizable composition including a colorant on a transparent substrate including a black matrix, exposing the formed pattern, removing a non-exposed portion with a solvent, and thermally curing the same. The colored photosensitive resin composition for manufacturing a color filter according to the pigment dispersion method generally includes an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, an epoxy resin, a solvent, other additives, and the like. The pigment dispersion method is actively applied to manufacture LCDs such as mobile phones, laptop computers, monitors, and TVs. However, photosensitive resin compositions for color filters used in pigment dispersion methods have recently been required to have improved performance and excellent pattern characteristics. In particular, high color reproducibility and high brightness as well as high contrast ratio characteristics are urgently required.

The image sensor is a component for photographing in a cellular phone camera or a Digital Still Camera (DSC). Image sensors may be classified into charge-coupled device (CCD) image sensors and Complementary Metal Oxide Semiconductor (CMOS) image sensors depending on manufacturing processes and application methods. Color imaging devices for charge coupled device image sensors or complementary metal oxide semiconductor image sensors include color filters each having filter segments mixing primary colors of red, green, and blue, and the colors are separated. The most recent color filters installed in color imaging devices have a pattern size of 2 micrometers or less than 2 micrometers, which is 1/100 to 1/200 of the pattern size of conventional color filter patterns for LCDs. Therefore, increased resolution and reduced pattern residue are important factors in determining device performance.

A color filter manufactured by using the pigment-type photosensitive resin composition has limitations in brightness and contrast ratio due to the size of pigment particles. In addition, a color image forming apparatus for an image sensor requires a small dispersion particle diameter for forming a fine pattern. In order to meet the demand, efforts have been made to obtain a color filter having improved brightness and contrast ratio by introducing a dye that does not form particles instead of a pigment, thereby preparing a photosensitive resin composition suitable for the dye. However, the dye has poor durability to the pigment, such as light resistance and heat resistance, and the like, and thus the brightness may be reduced.

Disclosure of Invention

Drawings

Fig. 1 is a view showing the cage width of the shell represented by chemical formulas 3 to 4.

The embodiment provides a photosensitive resin composition having improved brightness and durability.

Another embodiment provides a photosensitive resin layer manufactured using the photosensitive resin composition.

Another embodiment provides a color filter comprising a photosensitive resin layer.