JP2001100007A - Antidazzle antireflection film, polarizing plate and image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an antidazzle antireflection film excellent in visibility at a low cost. SOLUTION: At least one low refractive index layer 3 comprising a fluororesin having a refractive index of 1.38-1.49 is disposed on a substrate 1 and an antidazzle layer 2 containing a binder having a refractive index of 1.57-2.00 is interposed between the substrate and the low refractive index layer in such a way that layer 2 comes in direct contact with the top of the substrate to obtain the antidazzle antireflection film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antireflection film having antiglare properties, a polarizing plate, and a liquid crystal display using the same.

[0002]

2. Description of the Related Art Antireflection films are generally used for cathode ray tube displays (CRT), plasma display panels (PD).
P) and image display devices such as liquid crystal display devices (LCDs), in order to prevent a reduction in contrast and reflection of an image due to reflection of external light, a display that reduces reflectance using the principle of optical interference. Placed on the surface.

[0003]

However, in an antireflection film having only a hard coat layer and a low refractive index layer on a transparent support, in order to reduce the reflectance, the low refractive index layer must have a very low refractive index. For example, an anti-reflection film using triacetyl cellulose as a support and a UV-cured coating of dipentaerythritol hexaacrylate as a hard coat layer has a thickness of 450 to 650.
In order to make the average reflectance in nm less than 1.6%, the refractive index must be made less than 1.40. Materials having a refractive index of 1.40 or less satisfying the above conditions include magnesium fluoride and calcium fluoride for inorganic substances, and fluorine-containing compounds having a large fluorine content for organic substances. When used for a film disposed on the outermost surface, scratch resistance was insufficient. Further, in order to have sufficient scratch resistance, it was necessary to use a compound having a refractive index of 1.43 or more.

Japanese Patent Application Laid-Open No. 7-287102 describes that the reflectance is reduced by increasing the refractive index of the hard coat layer. However, such a high-refractive-index hard coat layer has a problem in that since the difference in refractive index from the support is large, color unevenness of the film occurs, and the wavelength dependence of the reflectance also has a large amplitude. Japanese Patent Application Laid-Open No. Hei 7-333404 describes an antiglare antireflection film having excellent gas barrier properties, antiglare properties, and antireflection properties. However, formation of a silicon oxide film by chemical vapor deposition (CVD) is essential. Therefore, the productivity is inferior to the wet coating method. An object of the present invention is to improve an antireflection film for forming a hard coat layer and a low refractive index layer on a support,
Provide an anti-glare anti-reflection film that is simple and inexpensive and has sufficient anti-reflection performance, scratch resistance, and anti-fouling properties with less color unevenness, a polarizing plate using the same, and a liquid crystal display device using the same. It is to be.

[0005]

The object of the present invention has been attained by the following inventions. (1) having at least one low-refractive-index layer made of a fluororesin having a refractive index of 1.38 to 1.49 or less on a substrate,
The refractive index between the base material and the low refractive index layer is 1.57 to 2.00.
An antiglare antireflection film, wherein an antiglare layer containing the binder described in (1) is directly provided on the substrate. (2) The antiglare antireflection film according to (1), wherein the low refractive index layer made of the fluorine-containing resin is made of a heat or ionizing radiation curable resin. (3) The anti-glare anti-reflection film according to (2), wherein the anti-glare layer is made of a binder containing matte fine particles and a cured product of heat or ionizing radiation curable resin. (4) The antiglare antireflection film according to (3), wherein the average particle diameter of the mat fine particles is 1 to 10 μm. (5) In the antiglare layer, the binder having a refractive index of 1.57 to 2.00 is a heat or ionizing radiation cured product of a mixture of a high refractive index monomer and a trifunctional or higher (meth) acrylate monomer. The antiglare antireflection film according to the item (3), wherein: (6) In the anti-glare layer, the binder having the refractive index of 1.57 to 2.00 is Al, Zr, Zn, Ti, or I.
Anti-glare reflection according to item (3), which is a heat or ionizing radiation cured product of a mixture of ultrafine particles of a metal oxide selected from n and Sn and a trifunctional or higher (meth) acrylate monomer. Prevention film. (7) The low refractive index layer made of the fluorine-containing resin has a dynamic friction coefficient of 0.03 to 0.15 and a contact angle with water of 90 to 90.
The antiglare antireflection film according to any one of (1) to (6), wherein the angle is 120 °. (8) A polarizing plate, wherein the antiglare antireflection film according to any one of (1) to (7) is used as at least one of two protective films of a polarizing layer in the polarizing plate. (9) The antiglare antireflection film described in (1) to (7) or the antiglare antireflection polarizing plate described in (8) is used as the outermost layer of the display with the antireflection layer as the front side. A liquid crystal display device comprising:

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the antiglare antireflection film of the present invention will be described with reference to the drawings.

The embodiment shown in FIG. 1 is an example of the anti-glare anti-reflection film of the present invention, in which a transparent support 1, made of triacetyl cellulose, an anti-glare layer 2, and a low refractive index layer 3 are arranged in this order. Have. Reference numeral 4 denotes resin mat fine particles, wherein the refractive index of the antiglare layer is 1.57 to 2.00, and the refractive index of the low refractive index layer is 1.38 to 1.49. In the anti-reflection film,
It is preferable that the low refractive index layer satisfies the following formula (I).

Mλ / 4 × 0.7 <n ₁ d ₁ <mλ / 4 × 1.3 (I)

Wherein m is a positive odd number (generally 1);
n ₁ is the refractive index of the low refractive index layer, and d ₁ is the thickness (nm) of the low refractive index layer. λ is the wavelength of the light beam used. The refractive index of the low refractive index layer is preferably 1.43 to 4.4.
8 If this is too small, the film strength will be weak and the scratch resistance will be reduced, and if it is too large, the antireflection properties will be reduced.

The binder for forming the antiglare layer of the present invention has a refractive index of 1.57 to 2.00, preferably 1.57 to 1.
80, and if it is too small or too large, the antireflection property is reduced. The refractive index of, for example, triacetyl cellulose used as a support is 1.48. In such a binder, the high refractive index material has a particle diameter of 100 nm or less composed of a monomer having two or more ethylenically unsaturated groups and at least one oxide selected from titanium, aluminum, indium, zinc, tin, and antimony. Japanese Patent Application Laid-Open No. 8-110 discloses that when ultrafine particles are used, the particle size of the ultrafine particles is sufficiently smaller than the wavelength of light so that scattering does not occur and the ultrafine particles exhibit optically uniform behavior as a substance.
No. 401 and the like.

The anti-glare layer is not affected by optical interference in the anti-glare layer because surface scattering is caused by mat fine particles dispersed in the high refractive index material. The mat particles act on the anti-glare property. In the high refractive index hard coat layer having no matte fine particles, a large amplitude of the reflectance is seen in the wavelength dependence of the reflectance due to the optical interference due to the refractive index difference between the hard coat layer and the support. Although the prevention effect deteriorates and color unevenness occurs at the same time, these problems were solved by the antireflection film of the present invention by the scattering effect due to the surface unevenness of the antiglare layer.

In the present invention, a transparent support is used as a substrate. As the transparent support, triacetyl cellulose is preferable, but polyethylene terephthalate, polyethylene naphthalate, polycarbonate and the like can be used. When the antiglare antireflection film of the present invention is used for a liquid crystal display device, it is disposed on the outermost surface of the display by providing an adhesive layer on one surface or the like. Since triacetyl cellulose is used for a protective film for protecting a polarizing layer of a polarizing plate, it is preferable in terms of cost to use the antiglare antireflection film of the present invention as it is for a protective film.

The compound used for the binder of the antiglare layer is preferably a polymer having a saturated hydrocarbon or polyether as a main chain, and more preferably a polymer having a saturated hydrocarbon as a main chain. The binder polymer is preferably crosslinked. The polymer having a saturated hydrocarbon as a main chain is preferably obtained by a polymerization reaction of an ethylenically unsaturated monomer. In order to obtain a crosslinked binder polymer, it is preferable to use a monomer having two or more ethylenically unsaturated groups.

Examples of the monomer having two or more ethylenically unsaturated groups include esters of polyhydric alcohol and (meth) acrylic acid (eg, ethylene glycol di (meth) acrylate, 1,4-dichlorohexane diacrylate) Pentaerythritol tetra (meth) acrylate), pentaerythritol tri (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylolethanetri (meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol penta ( (Meth) acrylate, pentaerythritol hexa (meth) acrylate, 1,2,3-cyclohexanetetramethacrylate, polyurethane polyacrylate, polyester polyacrylate), vinylbenzene and the like. Derivatives (eg, 1,4-divinylbenzene, 4-vinylbenzoic acid-2-acryloylethyl ester, 1,4-divinylcyclohexanone), vinylsulfone (eg, divinylsulfone), acrylamide (eg, methylenebisacrylamide) and methacryl Amides are included.

The polymer having a polyether as a main chain is preferably synthesized by a ring-opening polymerization reaction of a polyfunctional epoxy compound. These monomers having an ethylenically unsaturated group need to be cured by a polymerization reaction by ionizing radiation or heat after coating.

Instead of or in addition to the monomer having two or more ethylenically unsaturated groups, a compound having a crosslinkable group may be used to introduce a crosslinked structure into the binder polymer by the reaction. Examples of crosslinkable functional groups include isocyanate groups, epoxy groups, aziridine groups, oxazoline groups, aldehyde groups, carbonyl groups, hydrazine groups,
Includes carboxyl, methylol and active methylene groups. Vinyl sulfonic acid, acid anhydride, cyanoacrylate derivative, melamine, etherified methylol, ester and urethane, and metal alkoxide such as tetramethoxysilane can also be used as a monomer for introducing a crosslinked structure. A functional group that exhibits crosslinkability as a result of a decomposition reaction, such as a block isocyanate group, may be used. Further, in the present invention, the cross-linking group is not limited to the above-mentioned compound, but may be one which shows reactivity as a result of decomposition of the above-mentioned functional group. These compounds having a cross-linking group need to be cross-linked by heat or the like after coating.

The binder forming the antiglare layer is made of the above-mentioned material.
In addition to high refractive index monomer or high refractive index inorganic fine particles
Include the amount necessary to achieve the predetermined high refractive index described above.
No. Examples of high refractive index monomers include bis (4-methacryloyl)
Ylthiophenyl) sulfide, vinyl naphthalene, bi
Nylphenyl sulfide, 4-methacryloxyphenyl
-4'-methoxyphenylthioether and the like.
Examples of high refractive index inorganic fine particles include titanium, aluminum,
Selected from indium, zinc, tin, and antimony
A particle size of at least one oxide of 100 nm or less,
It is preferable to contain fine particles of 50 nm or less.
New Examples of fine particles include TiO₂, Al₂O₃, I
n₂O₃, ZnO, SnO₂, Sb₂O ₃, ITO (tin
Containing indium oxide). Addition of inorganic fine particles
The amount added should be 10 to 90% by weight of the total weight of the antiglare layer.
And more preferably 20 to 80% by weight.
No.

In the antiglare layer, matte fine particles of a resin or an inorganic compound are used for the purpose of imparting antiglare properties, preventing deterioration in reflectance due to interference, and preventing color unevenness. The average particle size is 1.
0 to 10.0 μm is preferable, and 1.5 to 5.0 μm is more preferable. Examples of such resin or inorganic compound particles include particles of crosslinked acrylic resin, crosslinked polystyrene, melamine formaldehyde resin, aluminum oxide, silicon oxide, and the like. Further, it is preferable that the amount of the matte fine particles having a particle size smaller than the binder film thickness of the antiglare layer is less than 50% of the entire matte fine particles. The coating amount of the mat fine particles is preferably 10 to 1000 mg / m ² , more preferably 30 to 100 mg / m ² . The particle size distribution can be measured by a Coulter counter method, a centrifugal sedimentation method, or the like, and the distribution is converted into a particle number distribution. The thickness of the antiglare layer is preferably 0.5 to 10 μm, more preferably 1 to 5 μm.

For forming the low refractive index layer, a dynamic friction coefficient of 0.0
A fluorine-containing compound which is crosslinked by heat or ionizing radiation having a contact angle of 90 to 120 ° with water at 3 to 0.15 is used. Examples of the crosslinkable fluoropolymer compound include a perfluoroalkyl group-containing silane compound (for example, (heptadecafluoro-1,1,2,2-tetradecyl) triethoxysilane) and the like, and a fluorine-containing monomer and a crosslinkable group-providing compound. Copolymer containing a monomer as a structural unit. Specific examples of the fluorine-containing monomer unit,
For example, a portion of fluoroolefins (eg, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoroethylene, hexafluoropropylene, perfluoro-2,2-dimethyl-1,3-dioxole), (meth) acrylic acid or Perfluorinated alkyl ester derivatives (for example, Biscoat 6F
M (manufactured by Osaka Organic Chemicals) and M-2020 (manufactured by Daikin)
Etc.), fully or partially fluorinated vinyl ethers, etc. As a monomer for providing a crosslinkable group, in addition to a (meth) acrylate monomer having a crosslinkable functional group in the molecule in advance such as glycidyl methacrylate, a monomer having a carboxyl group, a hydroxyl group, an amino group, a sulfonic acid group, etc. ) Acrylate monomers (for example, (meth) acrylic acid, methylol (meth) acrylate, hydroxyalkyl (meth) acrylate, allyl acrylate, etc.). It is known from the disclosures of JP-A-10-25388 and JP-A-10-147739 that the latter can introduce a crosslinked structure after copolymerization.

In addition to the polymer having the above-mentioned fluorine-containing monomer as a constitutional unit, a copolymer with a monomer containing no fluorine atom may be used. There is no particular limitation on the monomer units that can be used in combination. For example, olefins (ethylene, propylene, isoprene, vinyl chloride, vinylidene chloride, etc.), acrylates (methyl acrylate,
Methyl acrylate, ethyl acrylate, acrylic acid 2-
Ethylhexyl), methacrylates (methyl methacrylate, ethyl methacrylate, butyl methacrylate, ethylene glycol dimethacrylate, etc.), styrene derivatives (styrene, divinylbenzene, vinyltoluene, α-methylstyrene, etc.), vinyl ethers (methyl vinyl ether) And the like, vinyl esters (vinyl acetate, vinyl propionate, vinyl cinnamate, etc.), acrylamides (N-tertbutylacrylamide, N-cyclohexylacrylamide, etc.), methacrylamides, acrylonitrile derivatives and the like. .
In the present invention, the thickness of the low refractive index layer is not particularly limited, but the former is preferably 0.08 to 0.15 μm, and the latter is preferably 1 to 10 μm.

Each layer of the antireflection film is formed by a dip coating method, an air knife coating method, a curtain coating method, a roller coating method, a wire bar coating method, a gravure coating method or an extrusion coating method (US Pat. No. 26812).
No. 94) can be formed by coating. Two or more layers may be applied simultaneously. The method of simultaneous coating is described in U.S. Pat.
Nos. 898, 3508947 and 3526528, and Yuji Harazaki, Coating Engineering, 253
Page, Asakura Shoten (1973), and can be carried out according to these methods. The antiglare antireflection film is preferably fixed to at least one of the protective films on both sides of the polarizing plate by adhesion or the like.

The antireflection film is a liquid crystal display (LC)
D), an image display device such as a plasma display panel (PDP), an electroluminescence display (ELD), and a cathode ray tube display (CRT). When the antireflection film has a transparent support, the transparent support side is adhered to the image display surface of the image display device.

[0023]

EXAMPLES The present invention will be described in more detail based on examples, but the present invention is not limited to these examples. (Preparation of coating liquid A for antiglare layer) Mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (trade name: DPHA, Nippon Kayaku Co., Ltd.)
125 g, bis (4-methacryloylthiophenyl) sulfide (trade name: MPSMA, Sumitomo Seika Co., Ltd.)
Was dissolved in 439 g of a mixed solvent of methyl ethyl ketone / cyclohexanone = 50/50% by weight. 5.0 g of a photopolymerization initiator (trade name: Irgacure 907, manufactured by Ciba Geigy) and a photosensitizer (trade name: Kayacure DETX, Nippon Kayaku Co., Ltd.) were added to the obtained solution.
3.0 g) in 49 g of methyl ethyl ketone. The refractive index of the coating film obtained by applying this solution and curing with ultraviolet light was 1.60. Further, crosslinked polystyrene particles having an average particle size of 5 μm (trade name: SX)
-500H, manufactured by Soken Kagaku Co., Ltd.), and the mixture was stirred and dispersed at 5,000 rpm for 1 hour with a high-speed disper, followed by filtration through a polypropylene filter having a pore diameter of 30 μm to prepare a coating solution A for the antiglare layer. .

(Preparation of Coating Solution B for Antiglare Layer) A hard coat coating solution containing a zirconium oxide dispersion (zirconium oxide 3) was added to a mixed solvent of 104.1 g of cyclohexanone and 61.3 g of methyl ethyl ketone while stirring with an air disper.
8% by weight, trade name: KZ-7886A, JSR
217.0 g). The refractive index of the coating film obtained by applying this solution and curing with ultraviolet light was 1.61. Further, crosslinked polystyrene particles having an average particle size of 5 μm (trade name: SX-500H, Soken Chemical Co., Ltd.)
5g) and 5000 rpm at high speed disper
After stirring and dispersion for 1 hour, the mixture was filtered through a polypropylene filter having a pore size of 30 μm to prepare a coating solution B for the antiglare layer.

(Preparation of Coating Liquid C for Antiglare Layer) A hard coat coating liquid containing a zirconium oxide dispersion (zirconium oxide 7) was added to a mixed solvent of 104.1 g of cyclohexanone and 61.3 g of methyl ethyl ketone while stirring with an air disper.
Contains 1% by weight, trade name: KZ-7991, JSR Corporation
217.0 g). The coating film obtained by applying this solution and curing with ultraviolet light had a refractive index of 1.70.
5 g of crosslinked polystyrene particles having an average particle size of 5 μm (trade name: SX-500H, manufactured by Soken Chemical Co., Ltd.)
Was added thereto, and the mixture was stirred and dispersed at 5000 rpm for 1 hour using a high-speed disper, and then filtered through a polypropylene filter having a pore size of 30 μm to prepare a coating solution C for the antiglare layer.

(Preparation of Coating Solution for Low Refractive Index Layer) Refractive index
46 heat-crosslinkable fluoropolymer (trade name: JN-72)
21, manufactured by JSR Corporation), 200 g of methyl isobutyl ketone was added, and the mixture was stirred and filtered with a polypropylene filter having a pore size of 1 μm to prepare a coating solution for a low refractive index layer.

Example 1 An 80 μm-thick triacetyl cellulose film (trade name: TAC-TD80U,
The above-mentioned coating solution A for an antiglare layer was applied to a Fuji Photo Film Co., Ltd. using a bar coater, dried at 120 ° C., and then cooled with a 160 W / cm air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.). ) To obtain an illuminance of 400 mW /
cm ^2, and an irradiation dose of 750 mJ / cm ² to cure the coating layer, to form an antiglare layer having an average thickness of 3.5 [mu] m. The coating liquid for a low refractive index layer was applied thereon using a bar coater, dried at 80 ° C, and further dried at 120 ° C.
For 10 minutes to form a low refractive index layer having a thickness of 0.096 μm.

Example 2 A coating solution B for an antiglare layer was coated on a triacetyl cellulose film (TAC-TD80U, manufactured by Fuji Photo Film Co., Ltd.) having a thickness of 80 μm using a bar coater, and then heated to 120 ° C. 160W / c after drying with
m of an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.), the coating layer is cured by irradiating ultraviolet rays with an illuminance of 400 mW / cm ² and an irradiation amount of 300 mJ / cm ² to prevent the coating layer from having an average film thickness of 3.5 μm. A glare layer was formed. The low refractive index layer coating solution is applied thereon using a bar coater, dried at 80 ° C., and thermally crosslinked at 120 ° C. for 10 minutes to form a low refractive index layer having a thickness of 0.096 μm. did.

Example 3 An antiglare layer coating solution C was applied to a 80 μm-thick triacetyl cellulose film (TAC-TD80U, manufactured by Fuji Photo Film Co., Ltd.) using a bar coater. 160W / c after drying with
m of an air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.), the coating layer is cured by irradiating ultraviolet rays with an illuminance of 400 mW / cm ² and an irradiation amount of 300 mJ / cm ² to prevent the coating layer from having an average film thickness of 3.5 μm. A glare layer was formed. The low refractive index layer coating solution is applied thereon using a bar coater, dried at 80 ° C., and thermally crosslinked at 120 ° C. for 10 minutes to form a low refractive index layer having a thickness of 0.096 μm. did.

[Comparative Example 1] The above-mentioned anti-glare layer coating solution A was used in a triacetyl cellulose film (TAC-TD80U, manufactured by Fuji Photo Film Co., Ltd.) having a thickness of 80 μm, except that MPSMA was completely replaced with DPHA. The same anti-glare layer coating liquid was applied using a bar coater, dried and cured under the same conditions as in Example 2 to form an anti-glare layer having an average thickness of 3.5 μm. This antiglare layer had a refractive index of 1.51. The low refractive index layer coating solution is applied thereon using a bar coater, dried at 80 ° C., and thermally crosslinked at 120 ° C. for 10 minutes to form a low refractive index layer having a thickness of 0.096 μm. did.

Comparative Example 2 A hard coat layer having an average thickness of 3.5 μm was applied to a triacetyl cellulose film (TAC-TD80U, manufactured by Fuji Photo Film Co., Ltd.) having a thickness of 80 μm in the same manner as in Comparative Example 1. Was formed. in addition,
Silica sol (methanol silica sol, Nissan Chemical Co., Ltd.)
Co., Ltd.) and a hydrolyzate of tetraethoxysilane for low refractive index layer coating using a bar coater.
, And thermally crosslinked at 120 ° C. for 10 minutes to form a low refractive index layer having a thickness of 0.096 μm and a refractive index of 1.43.

(Evaluation of Antireflection Film) The following items were evaluated for the obtained film. (1) Average reflectance 380-7 using a spectrophotometer (manufactured by JASCO Corporation)
The spectral reflectance at an incident angle of 5 ° was measured in a wavelength region of 80 nm. The average reflectance of 450 to 650 nm was used for the results. (2) Haze The haze of the obtained film was measured using a haze meter MODEL.
It measured using 1001DP (made by Nippon Denshoku Industries Co., Ltd.). (3) Pencil hardness evaluation Pencil hardness evaluation described in JIS K 5400 was performed as an index of scratch resistance. Antireflection film at a temperature of 25 ° C and a humidity of 60
After conditioning for 2 hours at% RH, the occurrence of scratches was evaluated using a 3H test pencil specified in JIS S 6006 at a load of 1 kg according to the following criteria. No scratches were observed in the evaluation of n = 5: ○ 1 or 2 scratches in the evaluation of n = 5: Δ 3 or more scratches in the evaluation of n = 5: × (4) Contact angle, fingerprint adhesion Evaluation As an index of the contamination resistance of the surface, the optical material was heated at a temperature of 25 ° C.
After adjusting the humidity at 60% RH for 2 hours, the contact angle to water was measured. After attaching a fingerprint to the sample surface, the sample was wiped off with a cleaning cloth to observe the state, and the fingerprint adhesion was evaluated as follows. Fingerprints can be completely wiped off: ○ Fingerprints can be seen slightly: △ Fingerprints can hardly be wiped off: ×

(5) Measurement of dynamic friction coefficient The dynamic friction coefficient was evaluated as an index of the surface slip property. Motion
The coefficient of friction was adjusted for 2 hours at 25 ° C and 60% relative humidity.
5mmφ with HEIDON-14 dynamic friction measuring machine
Stainless steel ball, load 100g, speed 60cm / min
The value measured in was used. (6) Evaluation of anti-glare property Exposed fluorescence without louver on the prepared anti-glare film
Light (8000 cd / m ²) And the reflection image is blurred
The degree was evaluated based on the following criteria. The outline of the fluorescent lamp is not known at all: ◎ The outline of the fluorescent lamp is slightly recognized: ○ The fluorescent lamp is blurred, but the outline can be identified: △ The fluorescent lamp hardly blurs: × (7) Glare evaluation Light diffuser with louver on conductive film
And the glare on the surface was evaluated according to the following criteria. There is almost no glare: ○ There is slight glare: △ There is glare of a size that can be identified by eyes: ×

Table 1 shows the results of Examples and Comparative Examples.
Both Examples 1 and 2 were excellent in antireflection performance, and all performances required for antiglare antireflection films such as pencil hardness, fingerprint adhesion, antiglare properties, and glare were good. Comparative Example 1
No sufficient antireflection performance was obtained due to the low refractive index of the antiglare layer. In Comparative Example 2, the contact angle of the low refractive index layer was small, and the fingerprint adhesion was poor.

[0035]

[Table 1]

Next, an antiglare antireflection polarizing plate was prepared using the film of Example 3. When a liquid crystal display device in which an antireflection layer was disposed on the outermost layer using this polarizing plate was prepared, excellent contrast was obtained because there was no reflection of external light, color unevenness did not occur, and anti-glare properties were obtained. The reflected image was inconspicuous, had excellent visibility, and had good fingerprints.

[0037]

The anti-glare anti-reflection film of the present invention is excellent in that it can be produced simply and at low cost, has sufficient anti-glare properties, anti-reflection performance, scratch resistance and stain resistance, and has less color unevenness. It has a function and effect. Therefore, in a polarizing plate using the same and an image display device using the anti-glare anti-reflection film on the front surface of the display device, the anti-glare property has excellent visibility without a decrease in contrast and reflection of an image due to reflection of external light. With no color unevenness of the image, scratch resistance of the display surface,
It has an excellent effect of having high antifouling properties.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a layer configuration of an antiglare antireflection film.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transparent support made of triacetyl cellulose 2 Anti-glare layer 3 Low refractive index layer 4 Matt fine particles

Continued on the front page F term (reference) 2H049 BB33 BB65 2H091 FA08X FA37X FB04 FB12 FC23 FC25 GA16 KA01 LA12 LA16 2K009 AA05 BB28 CC03 CC09 CC24 CC26 DD02 DD05 EE00 4F100 AA19A AA19H AA21A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA also) BA10B BA10C BA13 DE01A DE01H GB41 GB90 JA20A JA20H JB13A JB14A JN06 JN18C JN26A JN26H YY00A YY00C YY00H

Claims (9)

[Claims] 1. A substrate having at least one low-refractive-index layer made of a fluorine-containing resin having a refractive index of 1.38 to 1.49 or less, wherein a refractive index is provided between the substrate and the low-refractive-index layer. Rate is 1.57 ~
An antiglare antireflection film comprising an antiglare layer containing a binder of 2.00 and provided directly on the substrate. 2. The antiglare antireflection film according to claim 1, wherein the low refractive index layer made of the fluorine-containing resin is made of a heat or ionizing radiation curable resin. 3. The anti-glare anti-reflection film according to claim 2, wherein the anti-glare layer is made of a binder containing matte fine particles and a cured product of a heat or ionizing radiation curable resin. 4. The method according to claim 1, wherein the mat fine particles have an average particle size of 1 to 10.
The anti-glare anti-reflection film according to claim 3, wherein the thickness is μm. 5. The anti-glare layer according to claim 1, wherein
The anti-glare property according to claim 3, wherein the binder having a refractive index of 2.00 is a heat or ionizing radiation cured product of a mixture of a high refractive index monomer and a trifunctional or higher (meth) acrylate monomer. Anti-reflection film. 6. The anti-glare layer according to claim 1, wherein
The binder having a refractive index of 2.00 is Al, Zr, Z
4. A heat- or ionizing-radiation cured product of a mixture of ultrafine particles of a metal selected from n, Ti, In, and Sn and a trifunctional or higher (meth) acrylate monomer. Dazzling anti-reflection film. 7. The low refractive index layer made of the fluorine-containing resin has a dynamic friction coefficient of 0.03 to 0.15 and a contact angle with water of 90 to 120 °.
The anti-glare anti-reflection film according to any one of the above items. 8. Polarized light, wherein the antiglare antireflection film according to claim 1 is used for at least one of two protective films of a polarizing layer in a polarizing plate. Board. 9. An anti-glare anti-reflection film according to any one of claims 1 to 7, or an anti-glare anti-reflection polarizing plate according to claim 8 with an anti-reflection layer as a front side of a display. A liquid crystal display device used for the outermost layer.