阅读说明：本技术 防眩膜及具有此防眩膜的偏光板 (Anti-dazzle film and polarizing plate with same ) 是由 范纲伦 陈威宪 游国轩 于 2020-06-24 设计创作，主要内容包括：本发明公开一种防眩膜及具有此防眩膜的偏光板,该防眩膜包含透明基材及防眩层,其中该防眩层包含丙烯酸系黏结剂树脂、聚醚改质硅氧烷及多个二氧化硅纳米粒子,其中该等纳米粒子形成的微米级絮凝体在光学显微镜下呈现的平均二次粒径为介于1,500nm至3,100nm间。此防眩膜在低雾度可提供信赖的防眩性。(The invention discloses an anti-dazzle film and a polarizing plate with the anti-dazzle film, wherein the anti-dazzle film comprises a transparent base material and an anti-dazzle layer, wherein the anti-dazzle layer comprises acrylic binder resin, polyether modified siloxane and a plurality of silicon dioxide nano particles, and the average secondary particle diameter of a micron-sized flocculating body formed by the nano particles is between 1,500nm and 3,100nm under an optical microscope. The antiglare film can provide reliable antiglare properties at low haze.)

1. An antiglare film, characterized by comprising:

a transparent substrate; and

an anti-glare layer comprising an acrylic binder resin, a polyether-modified siloxane, and a plurality of silica nanoparticles;

wherein the micron-sized floccule formed by the plurality of silica nano-particles has an average secondary particle size of 1,500nm to 3,100nm under an optical microscope.

2. The antiglare film of claim 1, wherein: the surface roughness of the anti-dazzle film is that the arithmetic mean height is between 0.03 and 0.18 mu m, the maximum height is between 0.30 and 1.8 mu m, the center line mean roughness is between 0.01 and 0.16 mu m, the total roughness height is between 0.10 and 0.90 mu m, the mean peak pitch is between 20 and 200 mu m, and the square root slope is between 0.36 and 4.60 degrees.

3. The antiglare film of claim 1, wherein: the polyether modified siloxane is a compound having the formula (I):

wherein R1-R4, R6-R11 are each hydrogen or C1-C10 hydrocarbyl, R5 is C1-C10 hydrocarbyl, x, y and a are 1 or integers more than 1, z and b are 0 or integers more than 0, the matrix-assisted laser desorption ionization-time of flight mass spectrometry average molecular weight is between 200 and 6,000, and the average number of oxyethylene groups is between 1 and 40.

4. The antiglare film of claim 1, wherein: the average molecular weight of the matrix-assisted laser desorption ionization-time-of-flight mass spectrometry of the polyether modified siloxane is between 200 and 4,500, and the average oxyethylene number is between 1 and 35.

5. The antiglare film of claim 1, wherein: the plurality of silica nanoparticles is between 0.1 parts by weight and 15 parts by weight per hundred parts by weight of the acrylic binder resin.

6. The antiglare film of claim 1, wherein: the polyether modified siloxane is between 0.01 and 8 parts by weight per hundred parts by weight of the acrylic binder resin.

7. The antiglare film of claim 1, wherein: the weight ratio of the plurality of silica nanoparticles to the polyether-modified siloxane is between 0.5 and 100.

8. The antiglare film of claim 1, wherein: the average primary particle diameter of each silica nanoparticle is 10nm to 160nm by a specific surface area method (BET).

9. The antiglare film of claim 1, wherein: the average primary particle diameter of each silica nanoparticle is 20nm to 100nm by a specific surface area method (BET).

10. The antiglare film of claim 1, wherein: the acrylic binder resin includes a (meth) acrylate composition and an initiator, wherein the (meth) acrylate composition includes:

35 to 50 parts by weight of a polyurethane (meth) acrylate oligomer having a functionality of between 6 and 15,

12 to 20 parts by weight of a (meth) acrylate monomer having a functionality of 3 to 6; and

1.5 to 12 parts by weight of a (meth) acrylate monomer having a functionality of less than 3.

11. The antiglare film of claim 10, wherein: the urethane (meth) acrylate oligomer having a functionality of between 6 and 15 is an aliphatic urethane (meth) acrylate oligomer.

12. The antiglare film of claim 10, wherein: the (meth) acrylate monomer having a functionality of 3 to 6 is at least one selected from the group consisting of pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, trimethylolpropane tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, or a combination thereof.

13. The antiglare film of claim 10, wherein: the (meth) acrylate monomer having a functionality of less than 3 is selected from the group consisting of 2-ethylhexyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 2-butoxyethyl (meth) acrylate, 1,6-hexanediol di (meth) acrylate, cyclotrimethylolpropane formal (meth) acrylate, at least one selected from the group consisting of 2-phenoxyethyl (meth) acrylate, tetrahydrofuran (meth) acrylate, lauryl (meth) acrylate, diethylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, isobornyl (meth) acrylate, and combinations thereof.

14. The antiglare film of claim 10, wherein: the initiator is at least one selected from the group consisting of acetophenone initiator, diphenyl ketone initiator, phenylpropanone initiator, dibenzoyl initiator, bifunctional alpha-hydroxy ketone initiator and acylphosphine oxide initiator, or their combination.

15. An antiglare film, characterized by comprising:

a transparent substrate; and

an anti-glare layer comprising an acrylic binder resin, polyether-modified siloxane, a plurality of silica nanoparticles, and a plurality of organic microparticles;

wherein the micron-sized floccule formed by the plurality of silica nano-particles has an average secondary particle size of 1,500nm to 3,100nm under an optical microscope.

16. The antiglare film of claim 15, wherein: the particle size of each organic microparticle is between 0.5 μm and 6 μm.

17. The antiglare film of claim 15, wherein: the refractive index of each organic microparticle may be between 1.4 and 1.6.

18. The antiglare film of claim 15, wherein: the plurality of organic fine particles is 0.5 to 15 parts by weight per one hundred parts by weight of the acrylic binder resin.

19. The antiglare film of claim 15, wherein: the plurality of organic particles are at least one selected from the group consisting of polymethyl methacrylate resin particles, polystyrene resin particles, styrene-methyl methacrylate copolymer particles, polyethylene resin particles, epoxy resin particles, polysiloxane resin particles, polyvinylidene fluoride resin particles, and polyvinyl fluoride resin particles, or a combination thereof.

20. A polarizing plate, comprising:

a polarizing component; and

the antiglare film of any one of claims 1 to 19, formed on a surface of the polarizing component.

Technical Field

The present invention relates to an antiglare film which can be used for an image display device, and particularly to an antiglare film which can provide reliable antiglare properties at low haze.

Background

With the development of display technology, the requirements of display performance, such as high contrast, wide viewing angle, high brightness, thinness, large size, high definition and diversified additional functions, of image display devices, such as Liquid Crystal Displays (LCDs), organic light emitting diode displays (OLEDs), etc., have been widely developed.

In general, the display is usually provided with an optical film having a surface treatment, such as an anti-glare film or an anti-reflection film, on the surface thereof for modulating light and reducing the influence of reflected light of external stray light on the displayed image.

In order to provide an antiglare film with excellent antiglare properties in a bright room environment and high contrast in a dark room environment, a method for developing a low haze antiglare film using small-particle-size organic fine particles to achieve high contrast has been known. In the related art, it has been proposed to coat an anti-glare layer containing organic fine particles on a transparent substrate, and to form an uneven structure on a film surface by aggregating the organic fine particles and the nano particles when coating the organic fine particles, thereby providing anti-glare properties and achieving a low glare effect. However, since the size of the organic fine particles and nanoparticles is not easily controlled, the uneven structure of the film surface is not as desired, and the antiglare property is reduced or the optical rotation is improved. Further, since the antiglare layer containing organic fine particles having a relatively large particle diameter and/or silica particles of a micron order is coated on a transparent substrate, the light diffusion effect by the fine particles increases the haze to a higher degree, and an antiglare film having a low haze and a good antiglare property cannot be provided.

Therefore, there is a need for an antiglare film having low haze but providing satisfactory antiglare properties.

Disclosure of Invention

The invention aims to provide an anti-dazzle film with low haze and satisfactory anti-dazzle performance and a polarizing plate with the anti-dazzle film.

In order to achieve the above object, the present invention provides an antiglare film comprising a transparent substrate and an antiglare film on the transparent substrate, wherein the antiglare layer has micron-sized flocs formed of silica nanoparticles, which can provide reliable antiglare properties at low haze and fine surface. The anti-dazzle film comprises a transparent base material and an anti-dazzle layer positioned on the transparent base material, wherein the anti-dazzle layer comprises acrylic binder resin, polyether modified siloxane and a plurality of silica nanoparticles, and a micron-sized flocculating constituent formed by the silica nanoparticles has an average secondary particle size of 1,500nm to 3,100 under an optical microscope.

The antiglare film of the present invention is low in haze, has a fine surface, and provides excellent antiglare properties. The anti-glare film of the present invention has a haze of not more than 5%, preferably not more than 3%, by aggregation of silica nanoparticles, an arithmetic average height (Sa) of surface roughness of 0.03 to 0.18. mu.m, a maximum height (Sz) of 0.30 to 1.80. mu.m, a center line average roughness (Ra) of 0.01 to 0.16. mu.m, a total roughness height (Ry) of 0.10 to 0.90. mu.m, an average peak spacing (RSm) of 20 to 200. mu.m, and a root-mean-square slope (Rdq) of 0.36 to 4.60 °.

In the antiglare layer of the antiglare film of the present invention, the average primary particle diameter by specific surface area method (BET) of each silica nanoparticle is between 10nm and 160nm, and preferably between 20nm and 100 nm.

According to a preferred embodiment of the antiglare film of the present invention, the silica nanoparticles may be present in the antiglare layer in an amount of 0.1 to 15 parts by weight, preferably 0.5 to 12 parts by weight, and more preferably 0.8 to 10 parts by weight, per one hundred parts by weight of the acrylic binder resin.

According to a preferred embodiment of the antiglare film of the present invention, in the antiglare layer, the polyether-modified siloxane may be between 0.01 parts by weight and 8 parts by weight, preferably between 0.05 parts by weight and 5 parts by weight, per one hundred parts by weight of the acrylic binder resin. Furthermore, in the anti-glare layer of the anti-glare film of the present invention, the relative weight ratio of the silica nanoparticles to the polyether-modified siloxane is between 0.5 and 100, preferably between 0.5 and 80.

In the antiglare layer of the antiglare film of the present invention, the polyether-modified siloxane is a compound having the formula (I):

wherein R1-R4, R6-R11 are each hydrogen or C1-C10 hydrocarbyl, R5 is C1-C10 hydrocarbyl, x, y and a are 1 or integers greater than 1, z and b are 0 or integers greater than 0, the matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) of the polyether modified siloxane has an average molecular weight of 200-6,000, and an average Ethylene Oxide (EO) unit of 1-40.

In the antiglare film of the present invention, the thickness of the antiglare layer may be between 2 μm and 10 μm, preferably between 2 μm and 8 μm.

In another aspect of the present invention, an anti-glare film is provided, which may further include organic fine particles in an anti-glare layer to adjust haze, wherein the anti-glare film comprises a transparent substrate and the anti-glare layer, wherein the anti-glare layer comprises an acrylic binder resin, polyether-modified siloxane, a plurality of silica nanoparticles, and a plurality of organic fine particles, and wherein the micron-sized flocs formed by the silica nanoparticles have an average secondary particle size of 1,500nm to 3,100nm under an optical microscope.

The anti-glare film containing organic particles in the anti-glare layer according to the present invention may have a refractive index of 1.4 to 1.6 per organic particle, and a particle size of 0.5 μm to 6 μm, and preferably 1 μm to 4 μm per organic particle.

In the anti-glare film of the present invention, the acrylic binder resin of the anti-glare layer comprises a (meth) acrylate composition and an initiator, wherein the (meth) acrylate composition comprises 35 to 50 parts by weight of a urethane (meth) acrylate oligomer having a functionality of 6 to 15, 12 to 20 parts by weight of a (meth) acrylate monomer having a functionality of 3 to 6, and 1.5 to 12 parts by weight of a (meth) acrylate monomer having a functionality of less than 3, wherein the number average molecular weight (Mn) of the urethane (meth) acrylate oligomer having a functionality of 6 to 15 is between 1,000 and 4,500.

Another object of the present invention is to provide a method for preparing an anti-glare film, which comprises uniformly mixing an acrylic binder resin, polyether-modified siloxane, and nanoparticles to form an anti-glare solution, coating the anti-glare solution on a transparent substrate, drying the substrate coated with the anti-glare solution, and then performing radiation curing or electron beam curing to form the anti-glare film.

It is still another object of the present invention to provide a polarizing plate including a polarizing element and the antiglare film.

The antiglare film and the polarizing plate of the present invention have a micron-sized floc formed of silica nanoparticles in the antiglare layer, and thus can provide reliable antiglare properties at low haze.

The summary is intended to provide a simplified summary of the disclosure so that the reader can obtain a basic understanding of the disclosure. This summary is not an extensive overview of the disclosure, and is intended to neither identify key/critical elements of the embodiments nor delineate the scope of the invention. The basic spirit of the present invention and the technical means and embodiments adopted by the present invention will be easily understood by those skilled in the art after referring to the following embodiments.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1 is a light transmission image of the antiglare film of example 1 of the invention at 200 magnifications of an optical microscope.

FIG. 2 is a light transmission image of the antiglare film of example 2 of the invention at 200 magnifications of an optical microscope.

FIG. 3 is a light transmission image of the antiglare film of example 8 under an optical microscope at 200 magnifications.

Fig. 4 is a surface roughness analysis image of the antiglare film of example 1 of the invention under an OLYMPUS 3D laser microscope at 50 magnifications.

Fig. 5 is a surface roughness analysis image of the antiglare film of example 2 of the invention under an OLYMPUS 3D laser microscope at 50 magnifications.

Fig. 6 is a surface roughness analysis image of the antiglare film of example 8 of the invention under an OLYMPUS 3D laser microscope at 50 magnifications. .

Detailed Description

In order to make the disclosure more complete and complete, the following illustrative description is provided for implementation aspects and specific embodiments of the present invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments disclosed below may be combined with or substituted for one another where appropriate, and additional embodiments may be added to one embodiment without further recitation or description.

The advantages, features, and advantages of the present invention will be more readily understood by reference to the following detailed description of exemplary embodiments and the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein but, on the contrary, as will be apparent to those of ordinary skill in the art, the embodiments are provided so as to fully convey the scope of the invention and the present invention is defined only by the appended claims.

Unless otherwise defined, all terms (including technical and scientific terms) and terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an overly idealized or overly formal sense unless expressly so defined herein.

In this specification, the term "(meth) acrylate" refers to both methacrylate and acrylate.

An object of the present invention is to provide an antiglare film which can provide reliable antiglare properties at low haze, comprising a transparent substrate and an antiglare layer on the transparent substrate, wherein the antiglare layer has micron-sized flocs formed of silica nanoparticles therein. The anti-dazzle film comprises a transparent base material and an anti-dazzle layer positioned on the transparent base material, wherein the anti-dazzle layer comprises acrylic binder resin, polyether modified siloxane and a plurality of silica nanoparticles, and a micron-sized flocculating constituent formed by the plurality of silica nanoparticles has an average secondary particle size of 1,500nm to 3,100nm under an optical microscope.

The antiglare film of the present invention is low haze but has excellent antiglare properties. In the embodiment of the antiglare film of the present invention, the haze of the antiglare film is not more than 5%, preferably not more than 3%. The anti-glare film of the present invention has an arithmetic average height (Sa) of surface roughness of 0.03 to 0.18. mu.m, a maximum height (Sz) of 0.30 to 1.8. mu.m, a center line average roughness (Ra) of 0.01 to 0.16. mu.m, a full roughness height (Ry) of 0.10 to 0.90. mu.m, a mean peak spacing (RSm) of 20 to 200. mu.m, and a square root mean slope (Rdq) of 0.36 to 4.60 °. The antiglare film of the present invention achieves low haze by aggregation of silica nanoparticles and provides excellent antiglare properties under such a fine surface of roughness.

In a preferred embodiment of the antiglare film of the present invention, the surface roughness of the antiglare film has an arithmetic average height (Sa) of from 0.04 μm to 0.13 μm, a maximum height (Sz) of from 0.40 μm to 1.50 μm, a center line average roughness (Ra) of from 0.02 μm to 0.15 μm, a full roughness height (Ry) of from 0.10 μm to 0.80 μm, an average peak pitch (RSm) of from 30 μm to 180 μm, and a root mean square slope (Rdq) of from 0.50 ° to 3.00 °.

In an embodiment of the present invention, a suitable transparent substrate may be a film having good mechanical strength and light transmittance, which may be, but not limited to, a resin film of polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polycarbonate (PC), triacetyl cellulose (TAC), Polyimide (PI), Polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), or cyclic olefin Copolymer (COP).

In the preferred embodiment of the present invention, the selected transparent substrate preferably has a light transmittance of 80% or more, and more preferably 90% or more. The thickness of the transparent substrate is between about 10 μm and 500 μm, preferably between about 15 μm and 250 μm, and more preferably between about 20 μm and 100 μm.

In the antiglare film of the present invention, the thickness of the antiglare layer may be between 2 μm and 10 μm, and preferably between 2 μm and 8 μm.

In the antiglare film of the present invention, the average primary particle diameter by specific surface area method (BET) of each silica nanoparticle used in the antiglare layer is between 10nm and 160nm, and preferably between 20nm and 100 nm. In the embodiment of the present invention, the silica nanoparticles may be surface-unmodified or surface-modified silica nanoparticles, the surface-modified silica nanoparticles may be siloxane-modified silica nanoparticles having alkyl groups, acryl groups or epoxy groups, and the polarities of the silica nanoparticles and the resin are close and distributed in the anti-glare layer.

According to an embodiment of the antiglare film of the present invention, the silica nanoparticles in the antiglare layer are between 0.1 and 15 parts by weight, preferably between 0.5 and 12 parts by weight, and more preferably between 0.8 and 10 parts by weight, per hundred parts by weight of the acrylic binder resin. When the amount of the silica nanoparticles used is less than the aforementioned range, the antiglare property of the antiglare film may be insufficient. When the amount of the silica nanoparticles used is higher than the aforementioned range, the haze of the antiglare film may be increased.

In the antiglare film of the present invention, the antiglare layer contains a polyether-modified siloxane having the formula (I):

wherein R1-R4, R6-R11 are each hydrogen or C1-C10 hydrocarbyl, R5 is C1-C10 hydrocarbyl, x, y and a are 1 or integers greater than 1, z and b are 0 or integers greater than 0, the matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) of the polyether modified siloxane has an average molecular weight of 200-6,000 and an average Ethylene Oxide (EO) unit of 1-40.

In the polyether modified siloxane of the formula (I), wherein x is an integer of 1 to 500, preferably an integer of 1 to 100, more preferably an integer of 1 to 10; y is an integer of 1 to 100, preferably 1 to 50; z is an integer of 0 to 500, preferably an integer of 0 to 100, more preferably an integer of 0 to 10; a is an integer of 1 to 40, preferably an integer of 1 to 35, more preferably an integer of 1 to 30; and b is an integer of 0 to 500, preferably an integer of 0 to 100, more preferably an integer of 0 to 40. In the polyether-modified siloxane of the aforementioned formula (I), when R1 to R11 are each a C1 to C10 hydrocarbon group, the hydrocarbon group may be a substituted C1 to C10 hydrocarbon group, and the substituent may be a hydrocarbon group, a hydroxyl group, or an alkoxy group. In the polyether-modified siloxane of the formula (I), an oxyethylene segment (ethylene oxide (EO) unit) and an oxypropylene segment (propylene oxide (PO) unit) are linked by random copolymerization, alternating copolymerization or block copolymerization.

In a preferred embodiment of the antiglare film of the present invention, the matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) average molecular weight of the polyether-modified siloxane of formula (I) above is preferably between 200 and 4,500, more preferably between 200 and 3,000, and the average Ethylene Oxide (EO) unit is preferably between 1 and 35, more preferably between 1 and 30.

Examples of the polyether-modified silicone of the aforementioned formula (I) include, but are not limited to, BYK-347, BYK-348, BYK-349, BYK-331, BYK-307, and BYK-3455 (manufactured by BYK-Chemie, Germany).

In a preferred embodiment of the antiglare film of the present invention, the polyether-modified siloxane may be used in an amount of 0.01 to 8 parts by weight, preferably 0.05 to 5 parts by weight, per one hundred parts by weight of the acrylic binder resin. When the amount of the polyether-modified siloxane used is less than the above range, the antiglare property of the antiglare film may be insufficient. When the amount of the polyether-modified siloxane used is more than the above range, the haze of the antiglare film may be increased.

In the antiglare film of the present invention, the polyether-modified siloxane of formula (I) contained in the antiglare layer can flocculate silica nanoparticles, so that the silica nanoparticles form micron-sized flocs having an average secondary particle diameter of 1,500nm to 3,100 nm. Without being bound by theory, in the anti-glare layer of the anti-glare film of the present invention, when the relative weight ratio of the silica nanoparticles to the polyether-modified siloxane is between 0.5 and 100, the polyether-modified siloxane facilitates flocculation of the silica nanoparticles to the aforementioned average secondary particle size, so that the anti-glare film has excellent anti-glare properties without affecting the fineness of the film surface of the anti-glare film. When the relative weight ratio of the silica nanoparticles to the polyether-modified siloxane is out of the above range, silica nanoparticle aggregates having the secondary particle size cannot be formed, and the antiglare property of the antiglare film is low, the haze is excessively high, or the film surface appearance is defective. Furthermore, in a preferred embodiment of the antiglare film of the invention, the relative weight ratio of the silica nanoparticles to the polyether-modified siloxane in the antiglare layer is preferably between 0.5 and 80.

Furthermore, in the antiglare film of the present invention, the micron-sized flocs of the silica nanoparticles in the antiglare layer may be aggregated again, may not be aggregated, or may be aggregated into a co-continuous network structure, and may not be aggregated again and may not affect the generation of antiglare properties, and the re-aggregation may help to improve antiglare properties again.

In another embodiment of the antiglare film of the present invention, other silica nanoparticles having a high degree of hydrophobicity may be added to the antiglare layer without affecting the physical properties of the antiglare film, and the silica nanoparticles are distributed on the surface of the antiglare layer due to a large polarity difference from the resin to adjust the physical properties of the surface of the antiglare film, for example, silica nanoparticles that can resist surface scratches are added.

In the antiglare film of the present invention, the acrylic binder resin used for the antiglare layer comprises a (meth) acrylate composition and an initiator, wherein the (meth) acrylate composition in the acrylic binder resin comprises 35 to 50 parts by weight of a urethane (meth) acrylate oligomer having a functionality of 6 to 15, 12 to 20 parts by weight of a (meth) acrylate monomer having a functionality of 3 to 6, and 1.5 to 12 parts by weight of a (meth) acrylate monomer having a functionality of less than 3.

In a preferred embodiment of the present invention, the molecular weight of the urethane (meth) acrylate oligomer having a functionality of 6 to 15 is not less than 1,000, preferably 1,500 to 4,500. In a further preferred embodiment of the present invention, the urethane (meth) acrylate oligomer having a functionality of between 6 and 15 is preferably an aliphatic urethane (meth) acrylate oligomer having a functionality of between 6 and 15.

In a preferred embodiment of the present invention, the (meth) acrylate monomer having a functionality of 3 to 6 has a molecular weight of less than 1,000, preferably less than 800. The (meth) acrylate monomer having a functionality of 3 to 6 suitable for use in the present invention may be, for example, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate (dipentaerythritol penta (meth) acrylate, dpp (m) a), dipentaerythritol hexa (meth) acrylate, dph (m) a, trimethylolpropane tri (meth) acrylate (trimethyolpropane tri (meth) acrylate, tmpt (m) a), ditrimethylolpropane tetra (meth) acrylate (DTMPT (m) a), pentaerythritol tri (meth) acrylate (pentaerythrytol tri (meth) acrylate, PET (m) a), or a combination thereof, but is not limited thereto. The (meth) acrylate monomer having a functionality of 3 to 6 is preferably one of pentaerythritol triacrylate (PETA), dipentaerythritol hexaacrylate (DPHA), dipentaerythritol pentaacrylate (DPPA), or a combination thereof, but is not limited thereto.

In a preferred embodiment of the present invention, the (meth) acrylate monomer having a functionality of less than 3 may be a (meth) acrylate monomer having a functionality of 1 or 2 and a molecular weight of less than 500. Suitable (meth) acrylate monomers having a functionality of less than 3 for use in the present invention may be, for example, 2-ethylhexyl (meth) acrylate (2-ethylhexyl (meth) acrylate, 2-EH (M) A), 2-hydroxyethyl (meth) acrylate (2-hydroxyethoxy (meth) acrylate, 2-HE (M) A), 3-hydroxypropyl (meth) acrylate (3-hydroxypropyl (meth) acrylate, 3-HP (M) A), 4-hydroxybutyl (meth) acrylate (4-hydroxybut (meth) acrylate, 4-HB (M) A), 2-butoxyethyl (meth) acrylate (2-butoxyethoxy (meth) acrylate), 1,6-hexanediol di (meth) acrylate (1, 6-cyclohexanediol (meth) acrylate, cyclic methacrylate (M) acrylate, trimethylolpropane (meth) acrylate, ctf (m) a), 2-phenoxyethyl (meth) acrylate (2-phenoxyethyl (meth) acrylate, phe (m) a), tetrahydrofuran (meth) acrylate (tetrahydrofuran (meth) acrylate, thf (m) a, lauryl (meth) acrylate, l (m) a, diethylene glycol di (meth) acrylate, degd (m) a), dipropylene glycol di (meth) acrylate (di (meth) acrylate, dpgd (m) a), tripropylene glycol di (meth) acrylate (tri (meth) acrylate, tpgd (m) a), isobornyl (meth) acrylate (isobornyl) acrylate, o, or combinations thereof, but is not limited thereto. The (meth) acrylate monomer having a functionality of less than 3 is preferably one of 1,6-hexanediol diacrylate (HDDA), cyclotrihydrocarbon methylpropane formal acrylate (CTFA), 2-phenoxyethyl acrylate (PHEA) or isobornyl acrylate (IBOA), or a combination thereof, but is not limited thereto.

Suitable initiators in the acrylate-based binder resin of the present invention may be those generally known in the art, and are not particularly limited, and for example, acetophenone-based initiators, benzophenone-based initiators, phenylpropenone-based initiators, dibenzoyl-based initiators, bifunctional α -hydroxy ketone-based initiators, acylphosphine oxide-based initiators, or the like may be used. The aforementioned initiators may be used alone or in admixture.

The anti-dazzle film can adjust the haze according to the using environment and the visual angle requirement of a product by adding the organic microparticles, and particularly adjusts the internal scattering effect of the internal haze of the anti-dazzle layer.

Therefore, in another aspect, the present invention provides an anti-glare film comprising a transparent substrate and an anti-glare layer on the transparent substrate, wherein the anti-glare layer comprises a micro-scale flocculent formed of a plurality of silica nanoparticles and a plurality of organic microparticles. The anti-dazzle film comprises a transparent base material and an anti-dazzle layer positioned on the transparent base material, wherein the anti-dazzle layer comprises acrylic binder resin, polyether modified siloxane, a plurality of silica nano particles and a plurality of organic micro particles, and micron-sized floccules formed by the silica nano particles have an average secondary particle size of 1,500nm to 3,100nm under an optical microscope.

Organic fine particles having an appropriate refractive index and particle size can be selected as the organic fine particles suitable for the antiglare film of the present invention, and the haze of the antiglare film can be adjusted by controlling the amount of the organic fine particles added. Suitable organic microparticles may have a refractive index of 1.4 to 1.6, and a particle size of 0.5 μm to 6 μm, and preferably 1 μm to 4 μm. In the embodiment of the anti-glare film with haze adjusted by organic fine particles, the haze can range from 1% to 50%, but is not limited thereto.

When the anti-glare film of the present invention uses organic fine particles to adjust the haze, the amount of the organic fine particles may be adjusted according to the actual haze, and preferably, the amount of the organic fine particles is 0.5 to 15 parts by weight, more preferably 1 to 12 parts by weight, per hundred parts by weight of the acrylic binder resin.

Organic fine particles suitable for the antiglare layer of the antiglare film of the present invention are polymethyl methacrylate resin fine particles, polystyrene resin fine particles, styrene-methyl methacrylate copolymer fine particles, polyethylene resin fine particles, epoxy resin fine particles, polysiloxane resin fine particles, polyvinylidene fluoride resin fine particles, or polyvinyl fluoride resin fine particles. In the preferred embodiment of the present invention, polymethyl methacrylate resin fine particles, polystyrene resin fine particles or styrene/methyl methacrylate copolymer fine particles are preferably used.

Other optical function layers, such as a low refractive layer, may also be selectively coated on the film surface of the antiglare film of the present invention to provide antireflection properties.

Another object of the present invention is to provide a method for preparing an antiglare film. The preparation method of the anti-dazzle film comprises the steps of uniformly mixing polyurethane (methyl) acrylate oligomer with the functionality of 6-15, at least one (methyl) acrylate monomer with the functionality of not less than 3, at least one (methyl) acrylate monomer with the functionality of less than 3, an initiator and a proper solvent to form acrylic adhesive resin; adding silicon dioxide nano particles and/or organic micro particles, polyether modified siloxane and an organic solvent into acrylic adhesive resin, and uniformly mixing to form an anti-dazzle solution; and (3) coating the anti-dazzle solution on a transparent substrate, drying the substrate coated with the anti-dazzle solution, and curing by radiation or electron beams to form an anti-dazzle layer on the transparent substrate to obtain the anti-dazzle film.

The solvent used in the method for producing an antiglare film of the present invention may be an organic solvent generally used in this technical field, for example, ketones, aliphatic or cycloaliphatic hydrocarbons, aromatic hydrocarbons, ethers, esters, or alcohols. One or more organic solvents may be used in both the acrylate composition and the anti-glare solution, and suitable solvents may include, but are not limited to, acetone, methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone, hexane, cyclohexane, methylene chloride, dichloroethane, toluene, xylene, propylene glycol methyl ether, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, isopropyl alcohol, n-butanol, isobutyl alcohol, cyclohexanol, diacetone alcohol, propylene glycol methyl ether acetate, tetrahydrofuran, and the like.

In other embodiments of the present invention, additives such as antistatic agents, coloring agents, flame retardants, ultraviolet absorbers, antioxidants, surface modifiers, leveling agents without polyether modification, and antifoaming agents may also be added to the prepared antiglare solution as needed to provide different functional properties.

The method for applying the antiglare solution may be a coating method generally used in the art, for example, a roll coating method, a knife coating method, a dip coating method, a roll coating method, a spin coating method, a spray coating method, a slit coating method, and the like.

It is still another object of the present invention to provide a polarizing plate comprising a polarizing element, wherein the surface of the polarizing element has the antiglare film.

The following examples are intended to further illustrate the invention, and the invention is not limited thereto.

Examples

Preparation example 1: preparation of acrylic Binder resin I

An acrylic adhesive resin I was formed by mixing and stirring 42 parts by weight of urethane acrylate (functionality of 6, available from Miwon, korea), 4.5 parts by weight of pentaerythritol triacrylate (PETA), 12 parts by weight of dipentaerythritol hexaacrylate (DPHA), 3 parts by weight of isobornyl acrylate (IBOA), 4 parts by weight of a monomolecular polymerization initiator (Chemcure-481, available from the constant bridge industry, taiwan), 24.5 parts by weight of Ethyl Acetate (EAC), and 10 parts by weight of n-butyl acetate (nBAC) for 1 hour.

Example 1: production of antiglare film

An antiglare solution was formed by uniformly dispersing 220 parts by weight of an acrylic binder resin I, 10 parts by weight of a silica nanoparticle dispersion sol (MEK-ST-L, solid content of 30%, solvent butanone, available from japan chemical, japan) having a specific surface area method (BET) average primary particle diameter of 40nm to 50nm, 7.5 parts by weight of a polyether-modified polydimethylsiloxane (BYK-307, solid content of 10%, solvent ethyl acetate, available from BYK, germany), 60 parts by weight of Ethyl Acetate (EAC) and 120 parts by weight of n-butyl acetate (nBAC) under mixing and stirring for 1 hour. The antiglare solution was coated on a 80 μm polyethylene terephthalate (PET) substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.6 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

The obtained antiglare film was observed under an optical microscope at 200 magnifications, and the obtained light transmission image was shown in fig. 1, and observed under an OLYMPUS 3D laser microscope at 50 magnifications, and the obtained surface roughness analysis image was shown in fig. 4.

Example 2: production of antiglare film

An antiglare solution was prepared according to example 1 except that the silica nanoparticle dispersion sol was changed to a silica nanoparticle dispersion sol (MEK-ST-ZL, solid content of 30%, solvent was butanone, available from japan chemical, japan) having an average primary particle diameter of 70nm to 100nm using a specific surface area method (BET), and the polyether-modified siloxane was changed to an antiglare solution formed using 7.5 parts by weight of polyether-modified polydimethylsiloxane (BYK-3455, solid content of 10%, solvent was ethyl acetate, available from BYK, germany).

The antiglare solution was coated on an 80 μm PET substrate, and photocured with a UV lamp at a radiation dose of 80mJ/cm2 in a nitrogen atmosphere to form an antiglare layer having a thickness of 3.3 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

The obtained antiglare film was observed under an optical microscope at 200 magnifications, and the obtained light transmission image was shown in fig. 2, and observed under an OLYMPUS 3D laser microscope at 50 magnifications, and the obtained surface roughness analysis image was shown in fig. 5.

Example 3: production of antiglare film

An antiglare solution was prepared according to example 1 except that the silica nanoparticle dispersion sol was changed to a silica nanoparticle dispersion sol (MEK-AC-4130Y, solid content of 30%, solvent was butanone, available from japan chemical) having an average primary particle diameter of 40nm to 50nm using the specific surface area method (BET), and the polyether-modified siloxane was changed to an antiglare solution formed using 7.5 parts by weight of polyether-modified polysiloxane (BYK-349, solid content of 10%, solvent was ethyl acetate, available from BYK, germany).

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.3 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Example 4: production of antiglare film

The procedure was carried out as in example 3, except that 7.5 parts by weight of polyether-modified polydimethylsiloxane (BYK-3455) was used instead of the polyether-modified silicone to form the antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.4 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Example 5: production of antiglare film

The procedure was as in example 3, except that the silica nanoparticle dispersion sol was changed to 5 parts by weight of silica nanoparticle dispersion sol having a specific surface area method (BET) average primary particle diameter of 40nm to 50nm (MEK-AC-4130Y) and the polyether-modified siloxane was changed to an antiglare solution using 7.5 parts by weight of polyether-modified polydimethylsiloxane (BYK-3455).

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.6 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Example 6: production of antiglare film

The procedure was carried out as in example 5, except that the silica nanoparticle dispersion sol was changed to an antiglare solution formed using 20 parts by weight of a silica nanoparticle dispersion sol (MEK-AC-4130Y) having a specific surface area method (BET) average primary particle diameter of 40nm to 50 nm.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.4 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Example 7: production of antiglare film

The procedure was carried out as in example 6, except that 1.5 parts by weight of polyether-modified polydimethylsiloxane (BYK-3455) was used instead of the polyether-modified silicone to form the antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.6 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Example 8: production of antiglare film

The procedure was carried out as in example 5, except that the silica nanoparticle dispersion sol was changed to 40 parts by weight of the silica nanoparticle dispersion sol having a specific surface area method (BET) average primary particle diameter of 40nm to 50nm (MEK-AC-4130Y) and the polyether-modified siloxane was changed to 3 parts by weight of the polyether-modified polydimethylsiloxane (BYK-3455) to form the antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.6 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by the optical measurement method described later are shown in table 1, and the measurements of the secondary particle size and the size of the aggregated area of the silica nanoparticles, the surface roughness and the antiglare property were performed, and the results are shown in table 2.

The obtained antiglare film was observed under an optical microscope at 200 magnifications, and the obtained light transmission image was shown in fig. 3, and observed under an OLYMPUS 3D laser microscope at 50 magnifications, and the obtained surface roughness analysis image was shown in fig. 6.

Example 9: production of antiglare film

The procedure was carried out as in example 3, except that 15 parts by weight of polyether-modified polydimethylsiloxane (BYK-3455) was used instead of the polyether-modified silicone to form the antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.4 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Example 10: production of antiglare film

The procedure is as in example 9, except that the polyether-modified silicone is changed to 45 parts by weight of polyether-modified polydimethylsiloxane (BYK-3455) to form an antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.4 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by optical measurement methods described later are shown in table 1, and the measurements of secondary particle size and aggregated area size of nanoparticles, surface roughness and antiglare property were performed, and the results are shown in table 2.

Optical measurement method

The antiglare films obtained in the preceding examples were optically measured by the following methods.

Measurement of light transmittance: the light transmittance was evaluated as described in JIS K7361 using an NDH-2000 haze meter (manufactured by Nippon Denshoku industries Co., Ltd.).

Measurement of haze: the haze was evaluated according to the description of JIS K7136 using an NDH-2000 haze meter (manufactured by Nippon Denshoku industries Co., Ltd.).

Measurement of gloss: the antiglare film was glued to a black acrylic plate and measured using a BYK Micro-Gloss meter according to the description of JIS Z8741, and angle Gloss values of 20, 60, and 85 degrees were selected.

And (3) measuring the definition: the hard coat optical film having antiglare property was cut into a size of 5 × 8cm2, measured using a SUGA ICM-IT image clarity apparatus in accordance with the description of JIS K7374, and the values measured for slits of 0.125mm, 0.25mm, 0.50mm, 1.00mm and 2.00mm were added up.

Optical property measuring method

Measurement of secondary particle size and aggregation area size of silica nanoparticles: the anti-dazzle film is cut into a proper size and placed in a Mitutoyo SV-320 high-magnification optical microscope, the light penetrating image of the anti-dazzle film is shot by a CCD camera with the magnification of 10 times that of an eyepiece and 20 times that of an objective lens, and the secondary particle size and the size of the gathering area of the silicon dioxide nano particles are calculated by image measuring software.

Measurement of surface roughness: an anti-glare film was attached to a black acryl plate via a transparent optical adhesive, four 3D surface roughness images were taken of a 256 × 256 μm2 area using an OLYMPUS LEXT OLS5000-SAF 3D laser confocal microscope, and the arithmetic average height (Sa) and the maximum height (Sz) were calculated according to the surface roughness description of ISO 25178, or the center line average roughness (Ra), the total roughness height (Ry), the average peak distance (RSm), and the square root slope (inclination angle) (Rdq) were calculated according to the line roughness description of ISO 4287.

Measurement of anti-glare property: the antiglare film was bonded to a black acrylic plate, and the antiglare properties of the antiglare film were evaluated in 5 ranks as follows by reflecting 2 fluorescent tubes on the surface of the antiglare film and visually checking the degree of blooming of the fluorescent tubes. The antiglare property of more than lv.2 was judged to be acceptable.

Lv.1: 2 separated fluorescent tubes can be clearly seen, and the outline can be clearly distinguished to be linear;

lv.2: the 2 separated fluorescent tubes can be clearly seen, but the outline is slightly blurred;

lv.3: 2 separated fluorescent tubes can be seen, the outline can be seen in a fuzzy way, but the shape of the fluorescent tubes can be distinguished;

lv.4: 2 fluorescent tubes can be seen, but the shapes can not be distinguished;

lv.5: the separated 2 fluorescent tubes cannot be seen, and the shape thereof cannot be distinguished.

The optical measurement results of the antiglare films of examples 1 to 10 of the present invention are shown in table 1.

Table 1: optical measurement results of the antiglare films of examples 1 to 10

The measurement results of the optical properties such as the secondary particle diameter and the aggregate area size of the silica nanoparticles, the surface roughness, and the antiglare property evaluation of the antiglare films of examples 1 to 10 of the present invention are shown in table 2.

Table 2: results of measuring optical properties of the antiglare films of examples 1 to 10

The anti-glare films prepared in examples 1 to 10 of the present invention formed micro-sized flocs of silica nanoparticles by the interaction between the silica nanoparticles and the polyether-modified siloxane compound, wherein the average secondary particle size of the flocculated silica nanoparticles was 1,500nm to 3,100nm, and the average aggregated area of the secondary particles was 354 μm2 to 958 μm2, or the particles were aggregated in a co-continuous network structure to provide excellent anti-glare property and haze of less than 5%. Furthermore, in the antiglare films of examples of the present invention, the silica nanoparticles-flocculated secondary particles in the antiglare layer can be aggregated again, not aggregated, or aggregated into a co-continuous network structure, and the secondary aggregation does not affect the antiglare property generation, and the antiglare films of examples 1 to 10 of the present invention have fine surfaces with an arithmetic average height Sa of 0.039 to 0.116 μm, a maximum height Sz of 0.406 to 1.055 μm, a center line average roughness Ra of 0.026 to 0.096 μm, a full roughness height Ry of 0.148 to 0.518 μm, an average peak spacing RSm of 40.213 to 111.591 μm, and a square root mean slope (tilt angle) Rdq of 0.686 to 2.188 degrees. The surface roughness of the antiglare films obtained in examples 1 to 10 of the present invention exhibited satisfactory fineness and had excellent antiglare properties.

Example 11: production of antiglare film

The procedure of example 4 was repeated except that 10 parts by weight of the silica nanoparticle dispersion sol (MEK-AC-4130Y) and 10 parts by weight of methyl methacrylate polymer particles (SSX-102, available from waterlogging chemicals Co., Ltd., Japan) having an average particle diameter of 2 μm and a refractive index of 1.49 were added to the antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.7 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by the optical measurement method described above are shown in table 3, and the measurements of the secondary particle size and the size of the aggregated area of the nanoparticles, the surface roughness and the antiglare property were evaluated, and the results are shown in table 4.

Example 12: production of antiglare film

The procedure of example 4 was repeated except that 10 parts by weight of the silica nanoparticle dispersion sol (MEK-AC-4130Y) and 5 parts by weight of polystyrene particles (SSX-302ABE, available from waterlogging chemicals Co., Ltd., Japan) having an average particle diameter of 2 μm and a refractive index of 1.59 were added to the antiglare solution.

The antiglare solution was coated on a 80 μm PET substrate, dried, and then photocured under a nitrogen atmosphere with a UV lamp at a radiation dose of 80mJ/cm2 to form an antiglare layer having a thickness of 3.7 μm on the PET substrate.

The results of the obtained antiglare film on transmittance, haze, gloss and clarity by the optical measurement method described above are shown in table 3, and the measurements of the secondary particle size and the size of the aggregated area of the nanoparticles, the surface roughness and the antiglare property were evaluated, and the results are shown in table 4.

Examples 11 and 12 illustrate that the anti-glare film disclosed in the present invention further comprises organic fine particles to adjust the haze. Organic fine particles having different refractive indexes were added to the anti-glare films of examples 11 and 12, respectively, and the haze of the anti-glare films was changed depending on the selection of the organic fine particles, and the anti-glare films having the haze adjusted by adding the organic fine particles still maintained satisfactory gloss and clarity, as shown in table 3.

Table 3: optical measurement results of the antiglare films of examples 11 and 12

Further, the average secondary particle size of the silica nanoparticles in the anti-glare films of examples 11 and 12 was 2387nm and 2657nm, respectively, and although the haze was adjusted by adding organic fine particles to the anti-glare layer, the surface roughness of the anti-glare film maintained good fineness and provided satisfactory anti-glare properties, as shown in table 4.

Table 4: results of measuring optical properties of the antiglare films of examples 11 and 12

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.