TWI547721B - Anti-glare film, polarizing plate and display device including the film - Google Patents

Description

Anti-glare film, and polarizing plate and display device using the same

The present invention relates to an anti-glare film, and a polarizing plate and a display device using the same.

The anti-glare film is a film having a function of reducing reflection of external light by diffuse reflection by the surface protrusion, and is disposed on various display panels, for example, a liquid crystal display (LCD), a plasma display (PDP), The anti-glare film is used on the surface of a Brown tube (CRT), an electronic light-emitting display (EL), or the like to prevent a decrease in contrast caused by reflection of external light, or to prevent image formation. The decrease in visibility of the display caused by reflection, and the like.

However, although the conventional anti-glare film has a serious unevenness on the surface, it is excellent in anti-glare property due to the diffuse reflection of external light, but there is a decrease in blackness and a contrast ratio of the displayed image is reduced. Shortcomings. On the other hand, when the surface unevenness of the conventional anti-glare film is weak, since the external light cannot be sufficiently diffused and reflected, the purpose of the anti-glare film, that is, the anti-glare property is lowered, and thus the visibility of the displayed image exists. The disadvantage of a greater degree of reduction.

Recently, the trend has been made to standardize the specifications, and to obtain an excellent change in the direction of blackness even if the anti-glare property is sacrificed a little. Therefore, although the evaluation of the blackness has been attracting attention as an important factor, in the conventional case, since the anti-glare degree and the blackness are evaluated by visual inspection, the objectivity of the evaluation is not high. Therefore, although the method of measuring the above-mentioned anti-glare degree and blackness by measuring the surface roughness is disclosed, since the surface roughness is an arithmetic mean value which does not reflect the standard deviation, there is a roughness even if the appearance is largely changed. The average value does not change the problem that occurs more frequently than the visible portion.

The present invention has been made to solve the above-described conventional problems, and an object thereof is to provide an anti-glare film excellent in blackness by an objective evaluation method of blackness.

Further, another object of the present invention is to provide a polarizing plate and a display device which are excellent in blackness.

In order to achieve the above object, the present invention provides an anti-glare film comprising an anti-glare layer which is formed by applying an anti-glare coating composition on a transparent substrate and curing it, and the above-mentioned anti-glare The diffuse reflectance (SCE) and haze of the layer satisfy the following mathematical formula 1.

More preferably, the value of the above mathematical formula 1 is 1 to 5.0.

The diffuse reflectance was measured by an ISO reference d/8 structure, and the light source was measured by a pulse xenon lamp (D65) and a 6-inch integrating sphere from 360 nm to 740 nm at intervals of 10 nm. The reflectance measured based on the above wavelength is converted into the diffuse reflectance of the Y value calculated by CIE1931.

The anti-glare coating composition includes a light-transmitting resin (A), a light-transmitting particle (B), a photoinitiator (C), and a solvent (D), and preferably an average of the light-transmitting particles. The particle size is 1 to 10 μm.

It is preferable to contain 0.5 to 20 parts by weight of the above-mentioned light-transmitting particles with respect to 100 parts by weight of the total anti-glare anti-reflective coating composition.

In order to achieve the above object, a polarizing plate comprising the above-described antiglare film according to the present invention is provided.

In order to achieve the above object, a display device comprising the above-described anti-glare film according to the present invention is provided.

According to the present invention described above, the blackness is calculated by considering the diffuse reflectance and the haze, and an anti-glare film excellent in blackness can be obtained. Therefore, the above anti-glare film can be effectively applied to a polarizing plate and a display device.

Hereinafter, the present invention will be described in detail.

An anti-glare film according to the present invention is characterized in that it comprises an anti-glare layer which is formed by applying and curing an anti-glare coating composition on a transparent substrate, and a diffuse reflectance (SCE) of the anti-glare layer. And the haze satisfies the following mathematical formula 1. The anti-glare film satisfying the criteria of the following Mathematical Formula 1 exhibits excellent blackness characteristics.

[Math 1]

First, the anti-glare coating composition according to the present invention will be described below. The anti-glare coating composition according to the present invention comprises a light-transmitting resin (A), a light-transmitting particle (B), a photoinitiator (C), and a solvent (D).

Translucent resin (A)

The light-transmitting resin can be used without limitation as long as it is generally used in the art.

Preferably, the light-transmitting resin may contain a photocurable (meth) acrylate oligomer and/or a photocurable monomer.

As the (meth) acrylate oligomer, for example, an epoxy (meth) acrylate or a urethane (meth) acrylate can be used, and a urethane (meth) acrylate is more preferably used.

The above urethane (meth) acrylate can be produced by reacting a polyfunctional (meth) acrylate having a hydroxyl group in a molecule and a compound having an isocyanate group in the presence of a catalyst in the presence of a catalyst.

Specific examples of the (meth) acrylate having a hydroxyl group in the above molecule may be selected from the group consisting of 2-hydroxyethyl (meth) acrylate, 2-hydroxyisopropyl (meth) acrylate, and 4- At least one of hydroxybutyl (meth) acrylate, caprolactone ring-opened hydroxy acrylate, pentaerythritol tri/tetra (meth) acrylate mixture, and dipentaerythritol penta/hexa (meth) acrylate mixture.

Further, as a specific example of the above compound having an isocyanate group, it may be selected from the group consisting of: 1,4-diisocyanate butane, 1,6-diisocyanate Ester hexane, 1,8-diisocyanate octane, 1,12-diisocyanate decane, 1,5-diisocyanate-2-methylpentane, trimethyl-1,6-diisocyanate Hexane, 1,3-bis(isocyanatomethyl)cyclohexane, trans-1,4-cyclohexene diisocyanate, 4,4'-methylenebis(cyclohexyl isocyanate), isophorone Diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethylxylene-1,3-diisocyanate, 1-chloromethyl- 2,4-diisocyanate, 4,4'-methylenebis(2,6-dimethylphenylisocyanate), 4,4'-oxidized bis(phenyl isocyanate), derived from hexamethylene diisocyanate At least one of a trifunctional isocyanate and a toluene diisocyanate of a trimethane propanol adduct.

Specifically, the photocurable monomer has an unsaturated group such as a (meth) acrylonitrile group, a vinyl group, a styryl group, or an allyl group in the molecule to serve as a photocurable functional group. A substance, among which, is preferably a (meth) acrylonitrile group.

The monomer having the above (meth) acrylonitrile group, as a specific example, may be selected from the group consisting of neopentyl glycol acrylate, 1,6-hexanediol (meth) acrylate, and propylene glycol di(meth) acrylate. , triethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, trimethylolpropane Tris(meth)acrylate, trimethylolethane tri(meth)acrylate, 1,2,4-cyclohexanetetra(meth)acrylate, pentapolyglycerol tri(meth)acrylate ( Pentaglycerol tri(meth)acrylate), pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, dipentaerythritol penta(methyl) Acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, tripentaerythritol tri (meth) acrylate, tripentaerythritol VI. Tris(meth)acrylate, bis(2-hydroxyethyl)isocyanurate di(meth)acrylate, hydroxyethyl(meth)acrylate,hydroxypropyl(meth)acrylate,hydroxybutyrate Base (meth) acrylate, isooctyl (meth) acrylate, isodecyl (meth) acrylate, stearyl methacrylate, tetrahydrofurfuryl (meth) acrylate, phenoxy At least one of a (meth) acrylate and an isobornyl (meth) acrylate.

The photocurable (meth) acrylate oligomer and/or the photocurable monomer exemplified above may be used singly or in combination of two or more.

The content of the above-mentioned light-transmitting resin is not particularly limited, but may be 1 to 80 parts by weight based on 100 parts by weight of the total of the anti-glare anti-reflective coating composition. When the content of the above-mentioned light-transmitting resin is less than 1 part by weight based on the above-mentioned basis, it is difficult to achieve sufficient hardness improvement, and when it exceeds 80 parts by weight, there is a problem that curling becomes severe.

Translucent particles (B)

The light-transmitting particles are generally used without any particular limitation as long as they are generally used for imparting anti-glare properties.

As the light-transmitting particles, for example, cerium oxide particles, cerium resin particles, melamine resin particles, acrylic resin particles, styrene resin particles, acrylic-styrene resin particles, and polycarbonate resin particles can be used. , polyethylene resin particles, vinyl chloride resin particles Wait. The above-mentioned light-transmitting particles may be used singly or in combination of two or more.

The average particle diameter of the above-mentioned light-transmitting particles is preferably 1 to 10 μm. When the average particle diameter of the above-mentioned light-transmitting particles is less than 1 μm, since it is difficult to form irregularities on the surface of the anti-glare layer, the anti-glare property is lowered, and when it exceeds 10 μm, since the surface of the anti-glare layer becomes rough, there is a decrease in visibility. Shortcomings.

Moreover, it is preferable to contain 0.5 to 20 parts by weight of the above-mentioned light-transmitting particles with respect to 100 parts by weight of the total of the above-mentioned anti-glare coating composition. When the light-transmitting particles are less than 0.5 part by weight based on the above-mentioned basis, the anti-glare property is lowered, and when it exceeds 20 parts by weight, the whitening of the anti-glare layer becomes severe.

Photoinitiator (C)

The above photoinitiator can be used without limitation as long as it is a photoinitiator used in the field. As the above-mentioned photoinitiator, at least one selected from the group consisting of a hydroxyketone, an aminoketone, and a hydrogen abstraction type photoinitiator can be used.

As a specific example, the above photoinitiator may be selected from the group consisting of: 2-methyl-1-[4-(methylthio)phenyl]2-morpholinpropan-1-one, diphenyl ketone benzoin Ketal, 2-hydroxy-2-methyl-1-phenyl-1-one, 4-hydroxycyclophenyl ketone, dimethoxy-2-phenylethanone, anthracene, fluorene, triphenyl Amine, carbazole, 3-methylacetophenone, 4-chloroacetophenone, 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexylphenyl At least one of ketone and benzophenone.

Can be used with respect to 100 parts by weight of the total anti-glare coating composition 0.1 to 10 parts by weight of the above photoinitiator. When the content of the above photoinitiator is less than 0.1 part by weight based on the above-mentioned basis, the curing speed becomes slow, and when it exceeds 10 parts by weight, cracks sometimes occur in the antiglare layer due to excessive curing.

Solvent (D)

The above solvent can be used without limitation as long as it is a solvent generally used in the field.

For example, the above solvent may preferably be an alcohol (methanol, ethanol, isopropanol, butanol, methyl cellosolve, ethyl cellosolve, etc.); a ketone (methyl ethyl ketone, methyl methyl ketone, methyl isobutyl ketone) , diethyl ketone, dipropyl ketone, cyclohexanone, etc.); hexanes (hexane, heptane, octane, etc.); benzenes (benzene, toluene, xylene, etc.). The solvents listed above may be used alone or in combination of two or more.

The content of the above solvent may be 10 to 95 parts by weight based on 100 parts by weight of the total anti-glare coating composition. When the solvent is less than 10 parts by weight based on the above-mentioned basis, the viscosity becomes high and workability is lowered, and when it is more than 95 parts by weight, it takes a long time in the curing process, so there is a problem that economical efficiency is lowered.

The anti-glare coating composition described above may further comprise, in addition to the above components, an antioxidant, a UV absorber, a light stabilizer, a leveling agent, a surfactant, and an antifouling agent, as needed. At least one of them.

According to the anti-glare film of the present invention, the anti-glare layer is formed by applying and curing the anti-glare coating composition on at least one surface of a transparent substrate.

As the transparent substrate, any film can be used as long as it is a film having transparency. For example, as the transparent substrate, a cycloolefin derivative such as a norbornene or a polycyclic norbornene monomer, a unit having a monomer containing a cyclic olefin, or the like, cellulose (diacetyl cellulose) may be used. , triacetonitrile cellulose, Acetyl cellulose butyrate, isobutyl ester cellulose, cellulose phthalocyanine, cellulose butyl phthalate, cellulose acetonitrile, ethylene-vinyl acetate copolymer , polyester, polystyrene, polyamine, polyetherimide, polyacrylic, polyimine, polyether, polyfluorene, polyethylene, polypropylene, polymethylpentene, polychlorinated Ethylene, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetal, polyether ketone, polyether ether ketone, polyether oxime, polymethyl methacrylate, polyethylene terephthalate, polyparaphenylene A substance in butylene dicarboxylate, polyethylene naphthalate, polycarbonate, polyurethane, epoxy resin, and an unstretched film, a uniaxial or biaxially stretched film can be used. A uniaxial or biaxially stretched polyester film excellent in transparency and heat resistance, or a triacetyl cellulose film having no transparency and optical anisotropy can be preferably used.

Although the transparent base material is preferably a base material having a small thickness, if it is too thin, the strength is lowered and the workability is deteriorated. Further, if it is too thick, there is a problem that the transparency is lowered or the weight of the polarizing plate is increased. Therefore, it is preferable that the thickness of the transparent substrate is 8 to 1000 μm, and more preferably 40 to 100 μm.

The coating of the above anti-glare coating composition is not limited, and may be, for example, selected from the group consisting of extrusion coating, pneumatic blade coating, reverse roll, spray, doctor blade, casting, gravure coating, micro gravure coating or spin coating. The method is appropriately carried out.

Thickness of the anti-glare layer formed by coating the above anti-glare coating composition The degree is 1 to 30 μm, preferably about 1 to 20 μm, and more preferably 3 to 15 μm.

After the anti-glare coating composition is applied, it is dried at a temperature of 30 to 150 ° C for 10 seconds to 1 hour, more preferably for 30 seconds to 10 minutes. If the drying is completed, the anti-glare coating composition is cured. In the case of photocuring, the antiglare coating composition is cured by irradiating UV light to form an antiglare layer. The irradiation amount of the above UV light is about 0.01 to 10 J/cm ² , preferably about 0.1 to ² J/cm ² .

At this time, the antiglare film of the present invention satisfies the mathematical formula 1 in terms of diffuse reflectance (SCE) and haze. That is, the diffuse reflectance and the haze of the antiglare film are measured, and the numerical range obtained by multiplying the diffuse reflectance by the haze is preferably 0.1 to 5.0, more preferably 1 to 5.0. An anti-glare film satisfying this range exhibits excellent blackness to a satisfactory extent.

When the value of the diffusion reflectance multiplied by the haze is less than 0.1, since the anti-glare property is weak, there is a problem that glare of external light cannot be prevented, and when it is more than 5.0, the scattering is severe and the blackness is lowered. The problem.

The diffuse reflectance was measured by an ISO standard d/8 structure (diffusion illumination use, 8 degree light receiving method), and the light source was pulsed xenon lamp (D65) and a 6-inch integrating sphere from 360 nm to 740 nm at intervals of 10 nm. On the other hand, the reflectance was measured, and the reflectance measured based on the above wavelength was converted into a diffused reflectance obtained by the Y value calculated by CIE1931. Such a diffuse reflectance can be easily measured by using a diffuse reflectance measuring instrument used in the art.

Further, the above haze can be measured by a haze measuring instrument which is generally used in the art.

A polarizing plate according to the present invention is characterized by comprising the above anti-glare film according to the present invention.

That is, the polarizing plate of the present invention may be a polarizing plate formed by laminating the above-described antiglare film according to the present invention on one surface or an amount of a normal polarizer. The polarizer may be a polarizer having a protective film on at least one side.

For the polarizer, for example, a polyvinyl alcohol film can be used, and a dichroic substance such as iodine or a dichroic dye can be adsorbed onto a hydrophilic polymer film such as an ethylene-vinyl acetate copolymer-based saponified film, and A film which is uniaxially stretched, a polyene-based oriented film such as a dehydrated material of polyvinyl alcohol or a dehydrochlorinated product of polyvinyl chloride. Preferably, it may be a polarizer composed of a polyvinyl alcohol film and a dichroic material such as iodine. The thickness of these polarizers is not particularly limited, but is generally about 5 to 80 μm.

When the polarizer is a polarizer having a protective film on at least one surface, the protective film may preferably be a film excellent in transparency, mechanical strength, thermal safety, moisture shielding property, isotropy, and the like.

For example, as the protective film, a polyester film such as polyethylene terephthalate, polyethylene isophthalate or polybutylene terephthalate can be used; , cellulose film such as triacetonitrile cellulose; polycarbonate film; acrylic film such as poly(methyl) acrylate or poly(methyl) acrylate; polystyrene, acrylonitrile-benzene a styrene film such as an ethylene copolymer; a polyolefin film such as polyethylene, polypropylene, a polyolefin film having a cyclic or norbornene structure, or an ethylene propylene copolymer; a polyimide film or a polyether Anthraquinone film; anthraquinone film. Among the above-mentioned protective films, it is excellent in transparency and From the viewpoint of no optical anisotropy, triacetyl cellulose can be preferably used. The thickness of the protective film is not particularly limited, but is preferably 8 to 1000 μm, and more preferably 40 to 100 μm.

A display device according to the present invention is characterized by comprising an anti-glare film according to the present invention.

As an example, the display device may be a display device including a polarizing plate including the anti-glare film described above.

When a polarizing plate including the anti-glare film of the present invention is included in the display device, a display device having excellent visibility can be provided. Further, the anti-glare film of the present invention can also be used by being mounted on a window of a display device.

The anti-glare film of the present invention can be used in various types of driving systems such as a reflective type, a transmissive type, a transflective LCD, a TN type, an STN type, an OCB type, a HAN type, a VA type, and an IPS type. Further, the antiglare hard coat film of the present invention can also be used in various display devices such as a plasma display, a cold emission display, an organic EL display, an inorganic EL display, or an electronic paper.

The display device described above can be easily formed by selecting a structure known in the art, in addition to the anti-glare film according to the present invention, and thus a detailed description thereof will be omitted.

According to the display device of the present invention described above, excellent light diffusibility, transmission sharpness, and good front luminance can be achieved.

The invention is further exemplified by the following examples and comparative examples, but the following examples and examples are merely illustrative of the invention and are not intended to limit or limit the scope of the invention.

[Preparation Example 1]

25 parts by weight of urethane acrylate (manufactured by Miwon Trading Co., Ltd., SC2153), 18.5 parts by weight of pentaerythritol triacrylate (manufactured by Miwon Trading Co., Ltd., M340), and 2 parts by weight of light-transmitting particles (acrylic resin particles) , an average particle diameter of 4.5 μm), 50 parts by weight of methyl ethyl ketone (manufactured by Daisui Chemical Co., Ltd.), 4 parts by weight of a photoinitiator (manufactured by BASF Corporation (formerly manufactured by CIBA Co., Ltd.), I-184), 0.5 weight A leveling agent (BYK Chemie, manufactured by BYK Chemie Co., Ltd.) was mixed by a stirrer and filtered using a PP material screening program to prepare a composition having a refractive index of 1.49.

[Preparation Example 2]

25 parts by weight of urethane acrylate (manufactured by Miwon Co., Ltd., SC2153), 18.5 parts by weight of pentaerythritol triacrylate (manufactured by Miwon Trading Co., Ltd., M340), and 2 parts by weight of light-transmitting particles (acrylic resin particles) , an average particle diameter of 3 μm), 50 parts by weight of methyl ethyl ketone (manufactured by Daisui Chemical Co., Ltd.), 4 parts by weight of a photoinitiator (manufactured by BASF Corporation, I-184), and 0.5 part by weight of a leveling agent (BYK) Manufactured by Chemie, BYK378) was mixed by a mixer and filtered using a PP material screening program to prepare a composition having a refractive index of 1.49.

[Preparation Example 3]

25 parts by weight of urethane acrylate (manufactured by Miwon Trading Co., Ltd., SC2153), 18.5 parts by weight of pentaerythritol triacrylate (manufactured by Miwon Trading Co., Ltd., M340), and 2 parts by weight of light-transmitting particles (acrylic resin particles, average particle diameter: 2 μm), 50 parts by weight of methyl ethyl ketone (manufactured by Daisui Chemical Co., Ltd.), 4 parts by weight of a photoinitiator (manufactured by BASF Corporation, I-184), and 0.5 part by weight A leveling agent (BYK Chemie Co., Ltd., BYK378) was mixed by a mixer, and filtered using a PP material screening program to prepare a composition having a refractive index of 1.49.

[Preparation Example 4]

26 parts by weight of urethane acrylate (manufactured by Miwon Co., Ltd., SC2153), 18.5 parts by weight of pentaerythritol triacrylate (manufactured by Miwon Trading Co., Ltd., M340), and 1 part by weight of light-transmitting particles (acrylic resin particles) , an average particle diameter of 4.5 μm), 50 parts by weight of methyl ethyl ketone (manufactured by Daisui Chemical Co., Ltd.), 4 parts by weight of a photoinitiator (manufactured by BASF Corporation, I-184), and 0.5 part by weight of a leveling agent ( BYK Chemie Co., Ltd., BYK378) was mixed by a mixer and filtered using a PP material screening program to prepare a composition having a refractive index of 1.49.

[Preparation Example 5]

25 parts by weight of urethane acrylate (manufactured by Miwon Trading Co., Ltd., SC2153), 18.5 parts by weight of pentaerythritol triacrylate (manufactured by Miwon Trading Co., Ltd., M340), and 2 parts by weight of light-transmitting particles (styrene resin) Particles, average particle diameter: 4.5 μm), 50 parts by weight of methyl ethyl ketone (manufactured by Daisui Chemical Co., Ltd.), 4 parts by weight of photoinitiator (manufactured by BASF Corporation, I-184), and 0.5 part by weight of leveling agent (BYK Chemie Co., Ltd.) Manufacture, BYK378) Mixing with a mixer and using PP material A qualitative screening procedure was used to filter to prepare a composition having a refractive index of 1.49.

[Examples 1 to 8 and Comparative Examples 1 to 2]

The anti-glare coating composition prepared by the above-described preparation example was applied to one surface of a trioctyl cellulose film having a blackness of 80 μm as shown in the following Table 1 and dried by heating, followed by ultraviolet curing. An anti-glare film was prepared.

<Experimental example>

The physical properties of the antiglare antireflection film prepared in the above manner were measured by the following methods, and the results are shown in Table 1 below.

1) Diffusion reflectance (SCE) (%)

The prepared anti-glare film was bonded to a black acrylate plate, and then, the diffuse reflectance (SCE) was measured by a spectrophotometer (manufactured by Konicaminolta Co., Ltd., CM-3700d) in the integral spherical reflectance of the surface of the coating layer. ) The measurement was carried out.

2) Haze (%)

The prepared anti-glare film was bonded to a glass plate, and then the haze of the film was measured by a transmittance meter (manufactured by Suga Corporation, HZ-1).

3) Blackness

The prepared anti-glare film is bonded to the black acrylate plate with the application surface facing the surface, and then, under the three-wavelength fluorescent lamp The light was reflected, and the blackness of the portion distant from the image reflected from the fluorescent lamp by 5 cm was visually evaluated.

◎: Close to black

○: Close to black and gray

X: Gray

As shown in the above Table 1, it can be confirmed that, in the case of the embodiment in which the value of the diffuse reflectance (SCE) multiplied by the haze is included in the range of the present invention, the comparative example deviating from the scope of the present invention Than, the blackness is very good.

Claims (6)

An anti-glare film comprising an anti-glare layer formed by applying an anti-glare coating composition on a transparent substrate and curing the same, and a diffusion reflectance of the anti-glare layer ( SCE) and haze satisfy the following mathematical formula 1, The diffuse reflectance is measured by an ISO reference d/8 structure, and the light source is measured by a pulse xenon lamp (D65) and a 6-inch integrating sphere from 360 nm to 740 nm at intervals of 10 nm, and the reflectance is measured. The reflectance measured from the wavelength is converted into a diffuse reflectance obtained by the Y value calculated by CIE1931. The anti-glare film according to claim 1, wherein the value of the mathematical formula 1 is 1 to 5.0. The anti-glare film according to claim 1, wherein the anti-glare coating composition comprises: a light-transmitting resin (A), a light-transmitting particle (B), a photoinitiator (C), and a solvent. (D), wherein the light-transmitting particles have an average particle diameter of 1 to 10 μm. The anti-glare film according to claim 3, which contains 0.5 to 20 parts by weight of the light-transmitting particles, based on 100 parts by weight of the total anti-glare anti-reflective coating composition. A polarizing plate characterized in that The anti-glare film according to any one of claims 1 to 4. A display device comprising the anti-glare film according to any one of claims 1 to 4.