TW201042281A - Antireflection film and polarizing plate comprising the same - Google Patents

Abstract

The present invention generally relates to an antireflection film and a polarizing plate comprising the same, and more specifically, to an antireflection film which has excellent rainbow effect and a very low reflectance by reducing the amplitude of reflectance spectrum and a polarizing plate comprising the same. An antireflection film according to the present invention comprise: a transparent substrate of cellulose triacetate (TAC) for protecting a polyvinyl alcohol (PVA) polarizer; a high-hardness layer of high-refractive index for being coated on the transparent substrate, the high-hardness layer of high-refractive index having a refractive index of 1.50 to 1.60 and antistatic function; and a low-refractive layer for being coated on the high-hardness layer of high-refractive index, the low-refractive layer having a refractive index of 1.31 to 1.40 and being wet-coated, wherein the antireflection film has an average specular reflectance of 0.1 to 0.4% at an incidence angle of 5 DEG in a wavelength region of 480 to 680 nm.

Description

201042281 VI. Description of the Invention: [Technical Field] 3 FIELD OF THE INVENTION The present invention generally relates to an antireflective film and a polarizing plate including the same, and more particularly to reducing the amplitude of a wavelength of a reflection spectrum An antireflection film which is small and has an excellent rainbow effect and a very low reflectance, and a polarizing plate including the same. BACKGROUND OF THE INVENTION Generally, antireflection films are used in various image display devices such as liquid crystal displays (LCDs), plasma display panels (PDPs), electroluminescent displays (ELDs), and cathode ray tube displays (CRTs). Anti-reflective films are also used in ophthalmic lenses and photo-cameras. For such an antireflection film, a laminated multilayer antireflection film having a thin layer of a transparent metal oxide is usually used. This thin transparent multilayer is used to prevent light reflection in the widest possible wavelength range in the visible range. Q The transparent metal oxide film is formed by chemical vapor deposition (CVD) or physical vapor deposition (pVD), especially by a vacuum > cation or sputtering method classified as pvD technology. Although the transparent metal oxide film exhibits excellent optical properties as an anti-reflective coating, the vacuum deposition and sputtering methods for forming these films result in low productivity and are not suitable for large-scale manufacturing. A method of forming an antireflection film by wet coating with inorganic particles has been proposed as an alternative to the vapor deposition technique. For example, JP-B-60-59250 discloses an antireflection layer containing a particulate inorganic substance 3 201042281 and having a microvoid obtained by coating. The antireflection layer having such micropores is obtained by coating the coating composition and treating the coating layer with an activated gas. JP-A-2-245702 discloses an antireflection film containing two or more kinds of ultrafine particles (for example, MgF: 2 and SiO 2 ). The mixing ratio of the particles is changed in the film thickness direction to change the refractive index 'to achieve optical properties similar to those of the antireflection film including the high refractive index layer/low refractive index layer in JP-A-59-50401 nature. The ultrafine particles are combined with SiO 2 obtained by thermal decomposition of ethyl decanoate. The thermal decomposition of ethyl oleate is accompanied by combustion of the ethyl moiety to produce carbon dioxide and steam, and carbon dioxide and steam are released from the coating layer leaving a void between the ultrafine particles. Further, JP-A-5-13021 proposes to fill the above gap between the ultrafine particles with a binder. JP-A-7-48527 discloses an antireflection film comprising a binder and a particulate inorganic substance, the particulate inorganic substance comprising porous cerium oxide. JP-A-11-6902 describes a full wet coating technique for producing an antireflection film having high film strength and low reflection at low cost, which discloses having three layers of antireflection formed by wet coating. A film of a layer in which at least two inorganic particles are stacked on a low refractive index layer to form a layer containing micropores. Further, as described in JP-A-2000-275401 and JP-A-2000-275404, a known method for riding an anti-reflection film formed by a wet coating technique to prevent glare properties includes: using an anti-reflection layer A substrate having surface unevenness is covered, matting particles for causing surface unevenness are introduced into the anti-reflection layer, and embossing is performed on the smooth anti-reflection film to form surface unevenness. However, an anti-reflection film having an average reflectance of 〇·4% or less in a long range of 450 to 650 nm wave 201042281' formed by vacuum deposition or sputtering causes the reflected light to be strongly discolored to reddish to bluish The purple color, and if the light source is behind the viewer, the discolored reflected light impairs the display quality. On the other hand, the antireflection film formed by wet coating has an average reflectance of more than 1% although it has a reflected light of almost neutral color 'this is particularly in terms of antireflection performance. The application of light directly on the display surface is not sufficient. SUMMARY OF THE INVENTION The present invention has been devised to solve the above problems. SUMMARY OF THE INVENTION An object of the present invention is to provide an antireflection film having an excellent reflection appearance and a very low reflectance by reducing the amplitude of a wavelength of a reflection spectrum, and a polarizing plate including the same. These and other objects and advantages of the present invention will be apparent from the following description of the invention. The above object is achieved by an antireflection film comprising: a cellulose triacetate (TAC) transparent substrate for protecting a polyvinyl alcohol (PVA) polarizer; coated on the transparent substrate a high refractive index high hardness layer having a refractive index and an antistatic function of 1.5 〇 to 1.60; and a low refractive index layer coated on the high refractive index high hardness layer, The low refractive index layer has a refractive index of 1.31 to mo and is wet-coated, wherein the antireflection film has an average specular reflectance of 0.1 to 0.4% at an incident angle of 5° in a wavelength range of 480 to 680 nm. . Here, the antireflection film has an antistatic index of 1 〇 4 〜. Preferably, the high refractive index high hardness layer has a thickness of 〇 1 to 2 〇 μ Γ 5 201042281 and the low refractive index layer has a thickness. Preferably, the anti-reflection film further includes an adhesive layer between the low refractive index layer and the high refractive index high hardness layer, or the high refractive index high hardness layer includes an adhesive layer. a component, wherein a surface of the adhesive layer that is in contact with a lower side of the low refractive index layer has a center line average roughness (Ra) of 〇〇〇1 to 〇.〇30μη. The high hardness layer of the refractive index of 13⁄4 is preferably coated with a coating composition comprising: at least one metal selected from the group consisting of oxides of titanium, bismuth, indium, zinc, tin, lanthanum and cerium Oxide particles; anionic dispersant; a cured resin having at least trifunctional polymerizable groups; a polymerization initiator; and a solvent. The high hardness layer of the ruthenium refractive index is preferably formed by coating the coating composition; drying the coating film to remove the solvent; and applying the coating film by applying at least one of heat and ionizing radiation Cured. Preferably, the low refractive index layer comprises a fluorine-containing compound which is curable by application of at least one of heat or ionizing radiation, and has a dynamic friction coefficient of 〇〇3 to 0.15 and 95. ~120. Contact angle with water. The above object is further achieved by a polarizing plate comprising an antireflection film having a polarizing plate and a surface protective film adhered on at least one side of the polarizing plate, wherein the surface protective film is an antireflection film, and wherein The anti-reflection film is prepared by coating the transparent substrate side of the anti-reflection film opposite to the side on which the low refractive index layer is to be formed with an alkaline solution to saponify at the same time as or after the formation of the low refractive index layer Heating the coated substrate, followed by washing with water or neutralizing it; and adhering the 201042281 substrate to the polarizing plate. The above object is achieved by a display device including the machine reflection film or a polarizing plate having the same in the reflection film. The antireflection film according to the present invention has an excellent rainbow effect and a very low reflectance. BRIEF DESCRIPTION OF THE DRAWINGS These and other features, aspects and advantages of the present invention will become better understood from the following description, the appended claims and the appended claims. In the drawings: Fig. 1 is a cross-sectional view of an antireflection film according to the present invention; and Fig. 2 is a view for comparing wavelengths of reflection spectra of a prior art antireflection film and an antireflection crucible of the present invention. [Embodiment 3] Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings. It is understood that the detailed description of the preferred embodiments of the present invention is intended to Fig. 1 is a cross-sectional view showing the basic layer structure of the antireflection film of the present invention. As can be seen from the i-th figure, the anti-reflection film of the present invention has a high-refractive-index high-hardness layer (20) and a low-refractive-index layer (3〇)_layer anti-reverse which are sequentially stacked on the transparent substrate (10). (4) Structure. In the case of this lying layer anti-reflective structure, the spectral wavelength can be adjusted by changing the optical thickness of each layer such as the refractive index of the product 7 201042281 and the film thickness. Since the antireflection film of the present invention having the above two-layer structure can achieve both the reduction of the rainbow effect and the low reflection, when the antireflection film of the present invention is applied as the outermost layer of the display device, it is a display device (for example, an LCD). Provides high visibility that has not been obtained to date. Further, since the antireflection film of the present invention is at 5 in the wavelength range of 480 nm to 680 nm. The average specular reflectance of 0.4% or less at the incident angle is such that the antireflection film satisfactorily prevents the decrease in visibility due to reflection of external light on the display panel. The antireflection film of the present invention has extremely low reflectance and does not have a problem associated with a conventional multilayer antireflection film, i.e., the reflected light is colored as a so-called rainbow effect of reddish to bluish purple. Moreover, when the antireflection film of the present invention is applied to an LCD, the color of the reflected light caused by the reflection of external light having high luminance such as light from the indoor illuminator is neutral and negligible. The transparent substrate of the antireflection film according to the present invention preferably has a refractive index ' of 45 to 1.55 and is preferably a cellulose triacetate substrate (TAc, refractive index: 1.49). In this case, the high refractive index (nl) of the high refractive index layer is required to be 1.50 to 1.6 Å, and the refractive index (n2) of the low refractive index layer should be 1.40 or less. Preferably, it is a buckle-丨.^. In the case where a material having a desired refractive index as a high refractive index resin layer and a low refractive index resin layer is difficult to obtain or is not suitable, a layer having a refractive index higher than a desired refractive index and a refractive index lower than a desired refractive index are included. The combination of multiple layers of layers can be used to achieve optical equivalent to substantially 201042281' of the designed high refractive index resin layer or low refractive index layer, as is known in the art. The term "substantially two-layer structure" used in the antireflection film of the present invention is intended to include a structure containing such an optical equivalent layer, and thus may include a four-layer or five-layer structure. Due to the above-described reflected light coloring (coloring) The anti-reflection film of the present invention has a greatly reduced unevenness due to the thickness variation of the anti-reflection layer in terms of the tint of the reflected light. In other words, the range of the allowable thickness variation is widened, which results in The product yield increase and the production cost are further reduced. The transparent substrate which can be used in the antireflection film of the present invention preferably comprises a plastic film. Suitable polymers for manufacturing the plastic film include: cellulose ester (for example, three Cellulose acetate, cellulose diacetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate and nitrocellulose), polyamide, polycarbonate, polyester (for example, polyterephthalic acid) Ethylene glycol ester, polyethylene naphthalate, 1,4-cyclohexanedonol polybutyl terephthalate, poly 1,2-diphenoxyethane-4,4'-dicarboxylate Acid glycol ester and polyparaphenylene Butylene glycolate), polystyrene (for example, syndiotactic polystyrene), polyolefin (for example, polypropylene, polyethylene, and polymethylpentene), polyfluorene, polyether, Polyacrylic acid, polyether amide, polymethyl methacrylate, and polyether ketone. When the antireflection film of the present invention is used as one of protective films for polarizing plates used in LCDs, organic LEDs, and the like, Most preferred is cellulose triacetate. The cellulose triacetate substrate is preferably prepared by the method disclosed in Technical Disclosure Bulletin 2001-1745, in which the antireflection film is adhered to a panel made of glass or the like in a flat CRT, PDP or the like. In the above application, it is preferred to use polyethylene terephthalate or polyethylene naphthalate 9 201042281

Desirably, the transparent substrate has a light transmittance of 80% or more, especially 86% or more, and a haze of not more than 2.0%, particularly 1.0% or less, and a refractive index of 1.4 to 1.7. The thickness of the transparent substrate is preferably, but not limited to, 30 to 200 μm, and more preferably 75 to 125 μm. Next, the high refractive index high hardness layer of the antireflection film of the present invention is formed by coating a combination comprising inorganic particles having a high refractive index, thermal or ionizing light-curing monomers, a polymerization initiator, and a solvent. Coating onto the transparent substrate; drying the coating film to remove the solvent; and curing the coating film by applying heat and/or ionizing radiation. The high refractive index high hardness layer thus formed is superior in adhesion to those formed by coating a polymer solution having a high refractive index and scratch resistance and drying the coating film. Preferably, a polyfunctional (fluorenyl) acrylate monomer and an anionic group-containing (fluorenyl) acrylate dispersant are added to the coating composition as described in U.S. Patent No. 6,210,858 to improve dispersion stability. Sex and cured film strength. The inorganic particles are preferably particles of y metal oxide selected from the group consisting of titanium, erbium, indium, zinc, tin and recorded oxides. The inorganic particles preferably have an average particle size of 1 to 10 (10) as measured by a C〇Ulter counter. Particles smaller than hnn have too large specific surface area and cannot be deficient in dispersion static stability. Particles larger than m can cause visible (four) scattering due to differences in refractive index with binders, resulting in higher haze levels. And the deterioration of transmittance. The haze of the high refractive index high hardness layer is preferably 3% or less, more preferably 10 201042281 is selected to be 1% or less. The anti-reflective (four) luminosity layer of the tree preferably includes a sharp-containing compound which is curable upon application of heat or ionizing radiation, and the low-refractive-index layer has a dynamic friction coefficient of U3 and a frequency of 95 to 12 〇. Contact angle with water. When the dynamic friction coefficient is greater than 0_15, the layer is easily scratched when wiped. When the water contact angle is less than 95, the layer is poorly resistant to fingerprint or oily soil contamination. The heat curing type or ionizing radiation curing type fluorine-containing compound includes a perfluoroalkyl group-containing decane compound (for example, (heptadecafluoro-U22 tetradecyl) diethoxy decane), and includes a fluorine-containing monomer and provides a fluorine-containing copolymer of a monomer capable of crosslinking a group. The fluorine-containing monomer providing the fluorine-containing polymer includes: a fluorine-olefin such as vinyl fluoride, vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene, and ' Perfluoro-2,2-dimethyl-Udioxonol; partially or fully fluorinated alkyl (meth)acrylate, for example, Viscote 6FM (available from Osaka Organic Chemical Industry Ltd.) and M-2020 (available From Daikin Industries, 〇Ud.); and partial or complete fluorine Vinyl ether. Most preferred is hexafluoropropylene because the resulting polymer has a low refractive index and is easy to handle. The monomer capable of providing a crosslinking group includes a (fluorenyl group) having a crosslinkable group in its molecule. An acrylate monomer such as glycidyl methacrylate; and a (meth) acrylate monomer having a carboxyl group, a hydroxyl group, an amino group, a sulfonic acid group or the like, such as (mercapto)acrylic acid, hydroxymethyl (methyl) Acrylates, hydroxyalkyl (meth) acrylates and allyl acrylates. Particularly preferred are the latter group of monomers which are known to be capable of introducing a crosslinked structure after copolymerization (see JP A_10_25388 and JP-A-10-). 147739) 〇11 201042281 Impure materials "Polymers that can be used in combination with money monomers include, but are not limited to: (for example, such co-olefins, ethylene and dichloroethylene), and & propylene, Isoprene, 2-ethyl (5), methyl: acid acrylate, methyl acetoacetate, methyl propyl methacrylate, acetophenone derivative ( For example - private one is a thiophene styrene), ethylene is two:, = =, ethylene , 'Ethyl acetate · acid core and: = i small acrylamide (such as 'N_tert-butyl propylene hydride JF-A-10-25388 and jp_A_1 〇 _ 147739. The motorcycle can further include for improving slippery Moving and lowering the moving unit 2^, the material is modified to resist the sufficiency. For example, it is preferred to collect the banknotes so that the proposed (four) bis group = to =. Preferably, the ultrafine oxidized second particles are dispersed in the fluorine-containing conjugate. In order to improve the anti-scratch property, it is preferable that the low refractive index layer of the antireflection film of the present invention has a (four) refractive index, but the resistance decreases as the refractive index decreases. Therefore, the refractive index of the fluoropolymer and the amount of ruthenium dioxide particles to be added are optimized to achieve an optimum balance between scratch resistance and low refractive index. A commercially available cerium sol in an organic solvent or a dispersion prepared from a commercially available cerium oxide powder in an organic solvent may be added to the coating composition for the low refractive index layer. in. The ultrafine oxide particles preferably have an average particle size of 0.001 to 0. 2 μm, especially 12 201042281. 〇.〇01~0·〇5μηι, and a narrowest size distribution (single-split). The ultrafine oxide particles are appropriately added in an amount of 5 to 90% by weight, preferably 1 to 70% by weight, more preferably 1 to 5 % by weight based on the total weight of the low refractive index layer. The antireflection film of the present invention may further comprise an adhesive layer between the low refractive index layer and the high refractive index high hardness layer, or the high refractive index face hardness layer includes a component for the adhesive layer And the surface of the adhesive layer in contact with the lower side of the low refractive index layer has a center line average roughness (Ra) of 〇〇〇1~〇(9). The adhesive layer is a layer which exhibits excellent adhesion to both the upper layer and the lower layer. In the present invention, the upper layer (the layer directly disposed on the adhesive layer) is a low refractive material which generally has poor adhesion to another layer. The antireflection film of the present invention exhibits a very high scratch resistance due to the adhesion improving effect of the adhesive layer. The adhesive layer of the present invention is characterized by having a roughness on its surface. The adhesion layer is believed to provide a good anchorage for the low refractive index layer to provide improved adhesion. The adhesive layer preferably has a thickness of 0.001 to 〇.3 〇μπι, particularly _i~〇 〇2〇μηη, especially 0.001 to Ο.ΟΙΟμηη, so as not to affect the anti-reflection function based on light interference. If the center line average roughness (Ra) of the adhesive layer is too small, the adhesive layer loses the anchoring effect, and if the center line average roughness (Ra) of the adhesive layer is too large, it occurs at the interface Disturbance, which in turn adversely affects the anti-reflective performance based on optical interference. When the refractive index of the adhesive layer is the same as the refractive index of the low refractive index layer (upper layer), the thickness of the adhesive layer is selected such that the total thickness of the adhesive layer 13 201042281 layer and the low refractive index layer衧 is the initial design of the low refractive index layer. When the refractive index of the adhesive layer is the same as the refractive index of the lower layer, it is conceivable to select the thickness of the adhesive layer such that the total thickness of the adhesive layer and the lower layer may be the initial designed thickness of the lower layer. It is more desirable that the adhesive layer replaces the lower layer', i.e., the function of the underlying layer originally designed. That is, the adhesive layer can be used as an adhesive layer with a high refractive index layer, an adhesive layer plus a hard coating layer, or an adhesive layer plus an anti-glare layer. In such a case, the thickness of the adhesive layer should be the thickness that has been designed for each functional layer. The surface roughness of the adhesive layer is represented by a center line average roughness (Ra) determined in accordance with JIS B-0601. Ra was determined by analyzing the surface profile data measured by an atomic force microscope at an estimated length of 4 μm. This unevenness period is excluded from the data when the surface has anti-glare unevenness caused by the matting particles described hereinafter. There is no particular limitation on the material which can make the adhesive layer have the above Ra. A preferred structure for knowing the roughness of the surface is a two-component system composed of an organic binder and fine particles; the organic binder is provided to ensure adhesion to the underlayer and the strength of the adhesive film, and the particles are provided Produces surface unevenness. The particles are preferably present in an amount of from 2 to 95% by weight, particularly from 5 to 95% by weight, based on the total weight of the adhesive layer. In terms of transparency, it is preferred that the particles be as fine as possible. Preferably, the volume average particle diameter is 0.001 to 0.2 μm, and particularly 疋〇.0〇5 to 〇1. The volume average particle diameter *5] was determined by a dynamic light scattering method using a particle size analyzer N4 available from Beckman Coulter, Inc. Inorganic niobium is preferred to provide an adhesive layer having film strength. The shape of the inorganic particles is not particularly limited and it includes a ball 201042281 in the form of a sheet, a fiber, a rod, an amorphous or a hollow shape. The spherical particles are preferably dispersed. There is also no particular limitation on the material of the inorganic particles, and preferably an amorphous material. Preferably, the oxide, nitride, compound or compound of the metal is particularly preferably a metal oxide. Available metals include K, Mg, Ca, Ba, A1, Zn, Fe, Cu, Ti, Sn,

In, w, γ, Mn, Ga, v, Nt), Ta, Ag, Si, B, Bi, M〇, Ce, ph t>

Να, Be, Pb and Ni. There is no limitation or limitation on the manner in which the inorganic particles are used. For example, the particles may be added in a dry state or added in a state of water towel or organic spray. In order to suppress agglomeration or sedimentation of the inorganic particles, it is preferred to combine them. Knife loose % fixative. Useful dispersion stabilizers include polyvinyl alcohol, polyethylene, - cellulose, polyamine, phosphoric acid, polymymy, surface, an anthraquinone, a decane coupling agent, and a titanium coupling agent. Specifically, it is preferred to use a ruthenium, a geminal agent which introduces a functional group copolymerizable with an organic binder to the surface of the granules of the granules to produce a strong cured film. For example, vinyl trioxodecane, γ-methacryloxypropyltrimethoxydecane, etc. are effective for organic binders which can be cured by radical polymerization of vinyl groups, γ-glycidoxypropyl c The base trimethoxy decane or the like is effective for an organic binder which can be cured by cationic polymerization of a cyclic sulfonium group. Although 1 is limited, it is preferable to add a decane coupling agent as a dispersion stabilizer in an amount of at least 1 part by weight with respect to 100 parts by weight of the inorganic particles. The decane coupling agent may be hydrolyzed prior to the addition, or the decane-coupled hydrazine may be mixed with the inorganic particles, followed by hydrolysis and condensation. The latter addition method is preferred. 15 201042281 The organic binder to be used in the adhesive layer should provide excellent adhesion to the underlayer and have the ability to form a strong film. In order to satisfy these requirements, a polymer having a saturated hydrocarbon or a polyether as a main chain is preferred. More preferred are polymers having a saturated hydrocarbon as a main chain. It is also preferred that the binder polymer has a crosslinked structure. Preferably, the binder polymer having a saturated hydrocarbon as a main chain includes an ethylenically unsaturated monomer. A binder polymer having a saturated hydrocarbon chain as a main chain and having a crosslinked structure includes a homopolymer or a copolymer containing a monomer having two or more ethylenically unsaturated groups per molecule. In order to obtain a high refractive index adhesive layer, it is preferred to use a monomer having two or more ethylenically unsaturated groups and an aromatic ring or at least one atom selected from halogen, sulfur, phosphorus and nitrogen other than fluorine. Examples of the monomer having two or more ethylenically unsaturated groups include an ester between a polyhydric alcohol and (mercapto)acrylic acid, such as ethylene glycol di(meth)acrylate, 1,4-cyclohexane Alcohol diacrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, trimethylolpropane tris(decyl) acrylate, trihydroxydecylethane tri(meth)acrylate, Dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(indenyl)acrylate, dipentaerythritol hexa(meth)acrylate, 1,2,3-cyclohexanetriol trimethacrylate, polyurethane polypropyl acetate Dilute acid S, and polyacetal polyacetic acid vinegar; ethylene benzene and its derivatives, such as 1,4-divinylbenzene, 2-propenylethyl 4-vinylbenzoate, and 1,4 - Divinylcyclohexanone; vinyl sulfone (for example, divinyl fluorene), acrylamide (for example, fluorenylene bis decyl amide), and methacrylamide. Examples of monomers providing a high refractive index binder are bis(4-mercaptopropene 16 201042281 thiophenyl) sulfide, vinyl naphthalene, vinyl strepazine sulfide, and 4-mercaptopropenyloxyl Stupid-4'-methoxyphenyl sulfide. The monomer having an ethylenically unsaturated group is polymerized by application of ionizing radiation or heat in the presence of a photoradical initiator or a thermal radical initiator. The binder polymer having a polyether as a main chain preferably comprises a ring-opening polymer of a polyfunctional epoxy compound. The ring-opening polymerization of the polyfunctional epoxy compound can be carried out by applying ionizing 0 radiation or heat in the presence of a photoacid generator or a thermal acid generator. A monomer having a crosslinkable functional group may be used in place of a monomer having two or more ethylenically unsaturated groups or in addition to a monomer having two or more ethylenically unsaturated groups. A monomer having a crosslinkable functional group is used to introduce the crosslinkable functional group, and the crosslinkable functional group reacts to introduce a crosslinked structure into the binder polymer. The functional group capable of crosslinking includes an isocyanate group, an epoxy group, an aziridine group, an oxazoline group, an aldehyde group, a carbonyl group, a thiol group, a carboxyl group, a hydroxymethyl group, and an active sub-Q methyl group. Vinylsulfonic acid, anhydride, cyanoacrylate derivative, melamine, etherified methylol compound, ester, carbamate, and metal alkoxide such as tetramethoxynonane can also be used for introducing crosslinks The monomer of the structure. A functional group which exhibits cross-linking ability after decomposition, for example, a blocked isocyanate group can also be used. Namely, the crosslinkable functional group may be a group which can be reacted at any time or a group which exhibits reactivity due to decomposition. After the binder polymer having the above-mentioned crosslinkable functional group is coated as a film, it is heated to form a crosslinked structure. The voids in the adhesive layer are divided by the void volume (volume representation 'the difference between the refractive index of the adhesive layer described by 17 201042281 and the refractive index calculated based on the composition of the adhesive layer= divided by the inclusion in the adhesive layer The refractive index of the air is obtained by folding the void volume. The void volume can also be obtained by observing the slice of the layer under a transmission electron microscope. The adhesive layer of the present invention preferably has 0.5 to 3 vol%, especially 1 to 25体积% void volume. The void volume is preferably described below, and preferably is: an extreme value for ensuring the strength of the adhesive layer. There is no material that can make the adhesive layer have the void volume described above. Particularly limited. A preferred structure for obtaining the above void volume is a two-component system composed of an organic binder and fine particles for ensuring adhesion to the underlayer and strength of the adhesive layer, the particles being used for A void is formed between them. The preferred content of the particles is 60 95% by weight, in particular 8 to 95% by weight. In terms of transparency, it is preferred that the particles are as fine as possible. The volume average particle diameter is 〇〇〇1 to 〇2 pm, particularly 0.005 Ο.ΐμπι. The types of organic binders and particles used in this embodiment are described in the embodiment in which the adhesive layer has a specific sRa. Those which are the same. If necessary, the antireflection film of the present invention may have a hard coat layer, a forward-scattering layer, an antistatic layer, and/or a protective layer. The antireflection film of the present invention has 104 to 1 Antistatic index of 〇 10. The hard coating layer is provided to make the transparent substrate scratch resistant. It also serves to enhance the adhesion between the transparent substrate and the upper layer. The coating layer is preferably formed by coating a coating composition comprising an oligomer of a polyfunctional acrylic monomer, a urethane acrylate, a propylene acrylate, a polymerization initiator, and a solvent, The coating composition 18 201042281 may contain inorganic _ (for example, dioxin or yttria dried and the coating layer is made by applying fresh/ion ionization _. 1~, m, particularly preferred ―. The second layer of the coating:; the material is high in pepper, = 3 ^ more: should be the _ rate 峨 u ~ L6, special plant Μ ton, and again

A ν and 0 oxime-like helmet is used as an organic layer of a polymer having a saturated hydrocarbon or a polyether as a main chain or a mixed layer of a private substance including an inorganic compound and an organic compound. A layer made of a polymer having a saturated to main chain is particularly preferred. The poly character preferably has a word structure. The substance having a hydrocarbon rectification as a main chain is preferably produced by polymerizing an ethylenic monomer. Preferably, (four) ^ two or more unsaturation groups of the single (d) provide a rotating binder polymer. Examples of the monomer having two or more thorium unsaturated groups include an ester between a polyhydric alcohol and (meth)acrylic acid, such as ethylene glycol di(methacrylate vinegar ' 丨, 4-cyclohexane Alcoholic propylene _, quaternary fine (methyl) acryl vinegar, pentaerythritol tris(methyl) propyl hydrazine _, trimethomethyl propyl tris(methyl) acrylate acid, three jing jing (Methyl)acrylic acid vinegar, two seasons: tetraol tetra(meth)acrylic acid vinegar, tripentaerythritol penta(methyl) acrylate vinegar, pentaerythritol hexa(indenyl) propylene _, u, 3_cyclohexanetriol Trimethyl acrylate vinegar, ? "Ammonia acrylate propylene _, and poly S condensed poly (10) _; vinyl stupid and its derivatives, such as 1 '4-diethyl stupid, 4 sense dilute benzoic acid 2 propylene醯基乙19 201042281 vinegar, and 1,4-diethylcyclohexanone; ethylene barrier (eg, diethyl bromide), acrylamide (eg, methylenebis acrylamide), and Methacrylamide The monomer having an ethylenically unsaturated group is cured by ionizing radiation-induced or thermally induced polymerization after wet coating. Polymerization with a polyether as a main chain The material is preferably synthesized by ring-opening polymerization of a polyfunctional epoxy compound. A monomer having a functional group capable of crosslinking can be used instead of a monomer having two or more ethylenically unsaturated groups, or two Alternatively, a monomer having a crosslinkable functional group may be used in addition to a monomer having more ethylenically unsaturated groups to introduce a crosslinked structure into the binder polymer. The crosslinkable functional group includes an isocyanate group. , epoxy group, aziridine group, oxalate group, cyclization, carbonyl, thiol, thiol, methyl and active methylene. vinyl acid, acid gf, cyanopropyl A dilute acid derivative, a melamine, an etherified methylol compound, an ester, a urethane, and a metal alkoxide such as tetramethoxynonane may also be used as a monomer for introducing a crosslinked structure. A compound having a functional group which exhibits cross-linking ability due to decomposition, for example, a compound having a blocked isocyanate group. After the wet coating of the binder polymer having the above-mentioned parent-functional group is applied as a film, heat or the like is applied thereto. The hard coating layer may contain inorganic particles to adjust the refractive index or increase the film strength. It is preferred to use inorganic particles having an average particle size of 0_001 to 〇5 μm, especially 〇〇〇1 to 〇2. The particles are cerium oxide, titanium dioxide, oxidized iron, tin oxide, carbonic acid, barium sulfate, talc, kaolin and sulphate granules. Particularly preferred are granules of cerium oxide, titanium dioxide and oxidized. The inorganic particles are preferably based on the Hard coating layer (1) ~ 卯 20 201042281 Reset %, especially 2 〇 ~ see the department %, 士, 廿 θ zhou 重 straight 々 especially the amount of 3 〇 ~ 6 〇 wt% added. The front scattering layer broadens the viewing angle in both directions of the vertical* level. The above hard coating layer containing fine particles having different refractive indices can function as a forward scattering layer. When the multilayer anti-reflection film of the present invention formed by wet coating has surface unevenness to exhibit an anti-glare property (a viewer's background (W, s 〇baekg_d) is formed), the material is formed on the substrate. It is more desirable to perform anti-reflection I (4) than to form an anti-reflection layer containing matting particles or the like on a layer having surface correction (4) to produce surface unevenness. The pre-method achieves better uniformity of film thickness, resulting in improved anti-reflective properties. - The layers constituting the ruthenium reflective layer can be applied by various wet coating techniques such as dip coating, air knife coating, curtain coating, roll coating, wire bar coating, gravure coating, micro gravure It is formed by coating and extrusion coating (see U.S. Patent No. 2,681,294). Microgravure coating and gravure coating are preferred to minimize spreading Q to reduce drying unevenness. Gravure coating is preferred to ensure thickness uniformity in the cross direction. Two or more layers can be formed simultaneously. For simultaneous coating, see U.S. Patents 2,761,791, 2,941,898, 3,508,947 and 3,526,528 and Yuji Harasaki, Coating Kogaku, ρ.253, Asakura Shoten (1973). The polarizing plate using the antireflection film of the present invention comprises at least one layer of the antireflection film of the present invention. When the antireflection film according to the present invention is used as one of a surface protective layer (protective layer) of a polarizing plate to manufacture a polarizing plate, the transparent substrate is opposite to the side of the antireflection layer (the low refractive index layer) The side should use the domain for 21 201042281. Saponification by a domain can be carried out according to any one of the following processes (1) and (2): (1) immersing a transparent substrate on which a low refractive index layer is formed in an alkaline solution at least once to make the substrate The back is saponified. (2) coating the side of the transparent substrate opposite to the side on which the low refractive index layer is to be formed with an alkaline solution, the coating being performed simultaneously or after forming the low refractive index layer; The coated substrate is heated, then washed with water and/or neutralized to saponify only the back side of the antireflective film. Process (1) is advantageous in that it is carried out in the same processing steps as the general cellulose triacetate membrane. However, the process (1) involves such a disadvantage that not only the back surface of the substrate but also the side of the anti-reflection layer is hydrolyzed, which may cause deterioration of the anti-reflection layer; and the alkaline treatment solution remains on the anti-reflection layer to cause contamination. trace. In the case where such a disadvantage becomes a problem, it is desirable to carry out the process (2) including a specific step. The polarizing plate includes a broken polarizing plate, a dichroic dye polarizing plate, and a polyene type polarizing plate. The iodine-based polarizing plate and the color-developing dye polarizing plate are usually prepared by dyeing a polyethylene glycol (PVA) film before or after stretching. PVA prepared by brewing polyacetate is usually used. Modified PVA can also be used. The dyeing of the PVA film can be carried out in a (1) vertical manner, for example, by dipping in an aqueous solution of moth-moth molybdate. Spread coating, or hydrazine solution or dye solution 嗔 When stretching a P VA film, an additive such as an acid compound for crosslinking P VA is preferably used. Preferably, the polarizing plate has a transmittance of % 22 201042281, particularly 35 to 50%, at a wavelength of 550 nm, and has 90 to 100%, particularly 95 to 1%, especially 99 to 100, at a wavelength of 550 nm. % degree of polarization. A polarizing plate having the antireflection film of the present invention as a protective film on one side thereof is suitable for a transmissive, reflective or semi-transmissive LCD of TN mode, STN mode, VA mode, IPS mode or OCB mode. When applied to a transmissive or semi-transmissive LCD, the polarizing plate ensures high visibility when combined with a commercially available brightness enhancing film, ie, polarized beam splitting with a polarized light selective layer The membrane is, for example, DBEF (Double Brightness Enhancement Film) available from Sumitomo 3M Ltd. The polarizing plate can be combined with a quarter-wave plate to provide a surface protective sheet for the organic ELD that functions to reduce reflected light from the surface and the inside. The antireflection film of the present invention having a polyethylene terephthalate (pET) film or a polyethylene naphthalate (PEN) film as a transparent substrate is suitable for an image display device such as a PDP and a CRT. It will be apparent to those skilled in the art that the present invention is applicable to a display device including the above anti-reflection film and a display device including the above polarizing plate. Hereinafter, preferred embodiments of the present invention will be specifically described. 1. Preparation of high-refractive-index high-hardness layer 1.1 High-refractive-index high-hardness layer As described above, the high refractive index high hardness layer which is an essential thin layer of the antireflection film of the present invention has 1.50 to 1.60, more preferably 1.52 Refractive index of 1.56. In order to produce a high refractive index high hardness layer, the transparency of the inorganic oxide formed by chemical vapor deposition (CVD) or physical vapor deposition (pVD), particularly vacuum deposition or sputtering classified as PVD technology, may be used. A thin layer, but preferably a thin layer formed by a full wet process. 23 201042281 The high refractive index high hardness layer is preferably formed by coating a coating composition comprising: having a selected from the group consisting of titanium (Ti), bismuth (Zr), and indium (In) , inorganic fine particles of at least one metal oxide of oxides of zinc (Zn), tin (Sn), aluminum (A1) and antimony (Sb), an anionic dispersant, curing with at least trifunctional polymerizable groups a resin (hereinafter also referred to as "binder"), a polymerization initiator, and a solvent; drying the coating film to remove the solvent; and applying the coating film by applying at least one of heat and ionizing radiation Cured. When the cured resin or initiator is used, since the cured resin is cured by polymerization by heat application or ionizing radiation after coating, excellent scratch resistance and adhesion are formed. High hardness layer with high refractive index. 1.2 Inorganic Fine Particles For the inorganic fine particles, a metal (e.g., Ti, Zr, In, Zn, Sn, Sb, Al) oxide is preferable, and especially in terms of a preferable refractive index, oxidization is most preferable. However, as the conductivity, inorganic fine particles having an oxide of at least one of Sb, In and Sn as a main component are preferably used. The refractive index can be adjusted to a certain range by changing the amount of the inorganic fine particles. When zirconium oxide is used as a main component, the average particle diameter of the inorganic fine particles in the layer is preferably from 1 to 120 nm, more preferably from 1 to 60 nm, and most preferably from 2 to 40 nm. This diameter range is preferred because it lowers the haze and improves the dispersion stability and the adhesion of the upper layer with appropriate unevenness to the surface. The inorganic fine particles comprising cerium oxide as a component for use in the present invention have a refractive index of preferably 1.90 to 2.80, more preferably 2.10 to 2.80, and most preferably 2.20 to 2.80. The amount of the inorganic fine particles to be added depends on the layer to be added to the machine-free particles, and the amount to be added to the high refractive index layer is 40 to 85% by weight based on the powder solids of the entire high refractive index layer. It is preferably 50 to 75% by weight, and more preferably 60 to 70% by weight. The particle diameter of the inorganic fine particles can be determined by a light scattering method or a photograph obtained by a transmission electron microscope (TEM). The specific surface area of the inorganic fine particles is preferably from 10 to 400 m 2 /g, more preferably from 20 to 200 m 2 /g, and most preferably from 30 to 150 m 2 /g. The inorganic fine particles may be subjected to physical surface treatment such as plasma in order to stabilize the dispersion in the coating solution or the dispersant solution or to improve the affinity for the binder component or the binding property to the binder component. Discharge treatment or corona discharge treatment, or chemical surface treatment using a surfactant, a coupling agent, or the like. It is preferred to use a coupling agent. An alkoxy metal-compound (such as a decane coupling agent and a titanium coupling agent) is used as the coupling agent. Specifically, treatment with a decane coupling agent having an acrylonitrile group or a methacryl group is effective. The chemical fine surface treatment agent, the solvent, the catalyst, and the dispersion stabilizer of the inorganic fine particles are described in paragraphs [0058] to [008 3] of the patent document JP-A-2006-17870. 1.3 Curing Resin It is preferred to use a polymerizable compound as a curing resin, and it is preferred to use an ionizing radiation curable polyfunctional monomer or a polyfunctional oligomer as the polymerizable compound. As an example of the functional group of such a compound, a functional group capable of photopolymerization, electron beam polymerization or radiation polymerization can be preferably used, and a photopolymerizable group is further preferable. Examples of the photopolymerizable functional group include unsaturated polymerizable functional groups such as a (meth)acrylic group, a vinyl group, a styrene group, and an allyl group 25 201042281. Among such groups, a (meth)acrylic group is preferred. A specific (meth)acrylic acid-containing di(meth)acrylic acid vinegar having a photopolymerizable functional group capable of photopolymerizable functional group, such as neodecyl acrylate '1,6-hexanediol (Meth) acrylate and propylene glycol di(meth)acrylic acid S 曰, polyoxyalkylene diol di(meth) acrylate, such as triethylene glycol di (meth) acrylate, dipropylene glycol di (Meth) acrylate, polyethylene glycol di(meth) acrylate and polypropylene glycol bis(indenyl) acrylate; di(meth) acrylate of polyterpene alcohol, such as pentaerythritol di(meth)acrylic acid S 曰, a di(meth) acrylate with a % oxyethane or propylene oxide adduct, such as 2,2-bis{4-acryloxyl-diethoxy)phenyl}propane and 2,2_ Double {4-(acryloxy.polypropoxy)phenyl}propane. Further, epoxy (meth) acrylate, urethane (meth) acrylate, and polyester (mercapto) acrylate are preferably used as the photopolymerizable polyfunctional monomer. Among them, a polyhydric alcohol and a (fluorenyl) acrylate are preferable, and a polyfunctional monomer each having two or more (fluorenyl) acrylic groups is more preferable. Specific examples of such a polyfunctional monomer include: tris(tetra)propenyl tris(meth)acrylic acid vinegar, 2 mercaptoacetone tris(meth)acrylic acid vinegar, 124% hexanediol di(a) Acrylate, pentaglyceryl triacrylate, pentaerythritol tetrakis(meth) acrylate pentaerythritol tris(methyl) propylene _, dipentaerythritol tripropylene (tetra), dipentaerythritol vinegar vinegar, dipentaerythritol (Methyl)acrylic acid vinegar, diquaternary decyl alcohol hexa(indenyl) acrylic acid I tri 1,3- fine alcohol tripropyl _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ It is also possible to use two or more kinds of multifunctional single 26 201042281 bodies in combination. The amount of the cured resin to be used can be adjusted within a certain range to satisfy the refractive indices of the above layers. 1.4. Polymerization initiator As the polymerization initiator, a photopolymerization initiator is preferably used. The photopolymerization initiator is preferably a photoradical polymerization initiator or a photocationic polymerization initiator, and more preferably a photoradical polymerization initiator. Examples of the photoradical polymerization initiator include acetophenone, benzophenone, and benzoyl benzoate Michler. <207>, α-amyl decyl ester, tetradecyl thiuram monosulfide, and succinolone. Examples of commercially available photoradical polymerization initiators include: KAYACURE manufactured by Nippon Kayaku Co., Ltd. (e.g., DETX-S, BP-100, BDMK 'CTX, BMS, 2-EAQ, ABQ, CPTX, EPD, ITX, QTX, BTC, MCA); Irgacure (for example, 651, 184, 127, 500, 907, 369, 1173, 2959, 4265 ' 4263) manufactured by Ciba Specialty Chemicals Corp.; and manufactured by Sartomer Company Inc. Esacure (KIP100F, KB1, EB3, BP, X33, KT046, KT37, KIP150, TZT). A photo-cleavable photoradical polymerization initiator is particularly preferred. Photo-cleavable photoradical polymerization initiators are described on page 159 of 'Recent UV Curing Techniques' (published by Kazuhiro Takausu) (1991) of Technical Information Institute Co., Ltd. Examples of photo-cleavable photoradical polymerization initiators which are commercially available include Irgacure (e.g., 651, 184, 127, 907) manufactured by Cibas Pecialty Chemicals Corp. The amount of the photopolymerization initiator to be used with respect to 100 parts by weight of the cured resin' is preferably 0.1 to 15 parts by weight, more preferably 1 to 10 parts by weight. 27 201042281 In addition to the photopolymerization initiator, a photo-accelerator can be used. Specific examples of the photo-promoter include n-butylamine, triethylamine, tri-n-butylphosphine, thioxanthone, and rice bran 1. Examples of commercially available light promoters include KAYACURE (e.g., DMBI and EPA) manufactured by Nippon Kayaku Co., Ltd. The photopolymerization reaction is preferably carried out by irradiating ultraviolet rays after coating and drying the high-refractive-index high-hardness layer. In addition to the above components (for example, inorganic fine particles, a curing resin, a polymerization initiator, a photo-promoter), a surfactant, an antioxidant, a coupling agent, or a surfactant may be added to the high-refractive-index high-hardness layer. Adhesive, anti-coloring agent, coloring agent (such as dye), antifoaming agent, leveling agent, heat resistam agent, ultraviolet absorber, infrared absorber, adhesion Reagents, polymerization inhibitors, antioxidants, surface modifiers, fine particles of conductive metals, and the like. 1.5 Solvent As the solvent, it is preferred to use a liquid having a particle size of 6 〇 to 17 〇. Specific examples of the solvent include water, alcohol (e.g., decyl alcohol, ethanol, isopropanol, butanol, benzyl alcohol), ketone (e.g., acetone, curtain methyl ethyl ketone, methyl isobutyl ketone, ring) Hexanone), esters (eg, formazan acetate, 9 ethyl acetate, propyl acetate, butyl acetate, methyl formate, ethyl formate, propyl formate, butyl formate), aliphatic hydrocarbons (eg, hexane) , cyclohexane), halogenated Q-generation hydrocarbons (eg, dichloromethane, chloroform, carbon tetrachloride), aromatic hydrocarbons (eg, cage m _ un-bens, one-method), saponin (eg, two Methylformamide, dimercaptoacetone face & amine, N-methylpyrrolidone), ether (for example, diethyl bond, dioxane, tetrahydroseven) and ether alcohol (for example, 1- Methoxy-2-propanol). Among them, toluene, xylene, methyl ethyl ketone, methyl. iso 28 201042281 butyl ketone, cyclohexanone and butanol are preferred. Specifically, mercapto.ethyl_, mercapto.isobutyl ketone and cyclohexyl are more preferred. The amount of the solid content of the coating composition for the high refractive index layer is preferably from 2 to 3 % by mass, more preferably from 3 to 2 % by weight, using the above solvent. '1.6 Preparation of the two-refractive-index south hardness layer The inorganic fine particles including the oxidation-defect as the main component 0 for the high-refractive-index high-hardness layer are preferably used in a dispersed state to prepare the high-refractive-index high-hardness layer. The inorganic fine particles are dispersed by using a disperser. Examples of the disperser include a sand mill (e.g., a bead mill having a pin), a high speed impeller mill, a gravel mill, a roll mill, an attritor, and a colloid mill. * Where 'the preferred sander and high speed impeller mill. Moreover, pre-dispersion processing can be performed. Examples of the disperser used for the pre-dispersion treatment include a ball mill, a three-roll mill, a kneader, and an extruder. The inorganic fine particles are preferably dispersed in a dispersion medium to have a particle size as small as possible. The mass average particle size is 10 to 12 nm, preferably 20 to 100 nm, more preferably 30 to 90 nm, still more preferably 3 to 8 nm. By dispersing the inorganic fine particles to a small particle size of 20 Å or less, a high hardness layer of high refractive index can be formed without impairing transparency. The high refractive index high hardness layer used in the present invention is preferably formed by the following method. It is preferable to add a curing resin (for example, the above-mentioned ionizable radiation-curable polyfunctional monomer or polyfunctional oligomer) necessary for forming a matrix to a binder, a photopolymerization initiator, or the like, by adding the inorganic The dispersion solution obtained by dispersing the particles in a dispersion medium to prepare a coating composition for forming a high refractive index layer or an intermediate refractive index layer for 29 201042281, and the obtained obtained for forming a high refractive index layer or intermediate refraction The coating composition of the rate layer is coated on a transparent support and allowed to cure by a crosslinking reaction or a polymerization reaction. The binder of the layer is preferably crosslinked or polymerized with the dispersant at the same time as or after the application of the high refractive index high hardness layer. The resulting adhesive for the high refractive index layer or the intermediate refractive index layer takes the form of crosslinking or polymerization between the above preferred dispersant and the ionizable radiation-curable polyfunctional monomer or oligomer, The anionic group of the dispersant is incorporated into the binder. Further, the anionic group incorporated in the binder of the high refractive index layer or the intermediate refractive index layer has a function of maintaining the dispersed state of the inorganic fine particles, and the crosslinking or polymerization structure imparts a film forming ability to the binder, resulting in The physical strength and the resistance to chemicals and the weather of the high refractive index layer containing the inorganic fine particles are improved. In the formation of the high refractive index high hardness layer, the crosslinking or polymerization reaction of the cured resin is preferably carried out in an atmosphere of 5% by volume or less. The physical strength and resistance to chemicals and weather of the high refractive index high hardness layer can be improved by forming a high refractive index high hardness layer in an atmosphere of 10% by volume or less of oxygen concentration, and further improved Adhesion between the high refractive index high hardness layer and the layer adjacent to the high hardness layer. Preferably, the crosslinking of the cured resin is carried out in an atmosphere of 6 vol% or less, more preferably 4 vol% or less, still more preferably 2 vol% or less, and most preferably 1 vol% or less of oxygen concentration. The high hardness layer of the horse refractive index is formed by a polymerization reaction 30 201042281. The thickness of the high hardness layer of the intermediate refractive index is preferably 0.1 to 2 Å, preferably 2 to 8. More specifically, in order to satisfy the material and the fold (four) of the high-refraction: f hardness layer, the fineness and the tree (four) species are selected to determine the mixing ratio in parallel to prepare a host composition.仃 2. Preparation of Low Refractive Index Layer 2.1 Low Refractive Index Layer The low refractive index layer of the antireflection film according to the present invention has a refractive index of preferably 131 to 1.40, more preferably 1.38 or less. This range of values is preferred because the refractive index can be lowered while maintaining the film strength. In the formation of a low refractive index layer, a transparent film of an inorganic oxide formed by chemical vapor deposition (CVD) or physical vapor deposition (PVD), particularly vacuum deposition or sputtering classified as PVD technology, may be similar. It is used for the above description, but it is preferred to use a full wet coating method using a coating composition for forming a low refractive index layer described hereinafter. It is preferable that the low refractive index layer contains inorganic fine particles 'and preferably at least one of the inorganic fine particles is hollow particles, and more preferably hollow particles containing ceria as a main component (hereinafter also referred to as "Hollow yttria particles" The thickness of the low refractive index layer is preferably from 90 to 130 nm, and more preferably from 1 to 120 nm. The haze of the low refractive index layer is preferably 3% or less, more preferably 2% or less, most preferably or lower. The strength 31 201042281 of the antireflection film formed with the layer up to the low refractive index layer is preferably Η or higher, more preferably 2H or higher, and Most preferably, it is 3 h or higher, and the strength is measured by a pencil hardness test under a load of 500 g. In order to improve the resistance of the antireflection film to fingerprint contamination, the contact angle of the surface with water is preferably 95 to 120. 2.2 Inorganic Fine Particles Preferably, hollow particles are used as the inorganic fine particles to be used in the low refractive index layer. The refractive index of the hollow particles is preferably 1.4 Å or lower, more preferably 1.28 to 1.38, and most excellent It is 1.32 to 1.36. As the hollow particles, hollow cerium oxide particles are preferable, and the inorganic fine particles will be described hereinafter with reference to hollow cerium oxide particles. The refractive index used herein refers to the refractive index of the particles as a whole, and It is not only the refractive index of ruthenium oxide which is the outer ruthenium of the hollow silica dioxide. Here, if we assume that the radius of the cavity in the particle is a and the radius of the particle shell is b, it is represented by the following equation Q) The porosity X is preferably from 10 to 60%, more preferably from 2 to 6 %, most preferably from 30 to 60%. (1). X = [(4Ka3/3) / (47tb3/3)] xl〇〇% When the hollow silica dioxide particles are reduced in refractive index and increased in porosity, the thickness of the outer shell becomes small and the strength of the particles is lowered. Thus, in view of scratch resistance, it is preferred. The particles have a refractive index in the above range. Here, the refractive index of the hollow dioxy-cut particles is measured by an Abbe refractometer (manufactured by ATAG 〇 κ.). Japanese Patent Slot JP-A-2001-233611 Shou JP A- The preparation of hollow dioxins (tetra) is described in 2002-79616. The hollow dihydrate (tetra) particles which are commercially available are used. The amount of the coated hollow silica dioxide particles is preferably from 1 to 1 〇〇mg/m2, more preferably from 5 to 80 mg/m2, still more preferably 10 to 60 mg/m 2 . Within this range, a desirable effect of improving scratch resistance or lowering the refractive index, preventing formation of fine roughness on the surface of the low refractive index layer, and maintaining an excellent appearance are obtained ( For example, a black, non-loose appearance) and a low total reflectance. The average particle diameter of the hollow-oxide oxide particles is preferably 30 to 150%, more preferably 35 to the thickness of the low refractive index layer. 80%, still more preferably 40 to 60%. In other words, if the thickness of the low refractive index layer is 1 〇〇 nm, the particle diameter of the hollow cerium oxide particles is preferably from 3 〇 to 15 〇 11111, more preferably from 35 to 80 nm, still more preferably 4 Å. ~60nm. If the particle diameter is within the range - the hole ratio can be satisfactorily maintained so that the refractive index is sufficiently lowered - low to prevent formation of fine unevenness on the surface of the low refractive index layer, and Maintain an excellent appearance (for example, a black, non-loose appearance) or a low total reflectance. The cerium oxide fine particles may be crystalline or amorphous Q, and are preferably monodisperse particles. The shape is most preferably spherical but there is no problem even if it is invisible. The average particle diameter of the hollow ceria particles can be determined by photographs obtained by a transmission electron microscope (TEM). In the present invention, cerium oxide particles having no voids may be used in combination with the hollow cerium oxide particles. The particle size of the cerium dioxide particles having no voids is preferably 5 to 150 nm, more preferably 1 Torr to 8 Å, and most preferably 15 to 60 nm. Moreover, at least one of the fine silica fine particles having an average particle size smaller than 25% of the thickness of the low refractive index layer (the fine particles are referred to as "small particle size fine silica dioxide fine particles") preferably has the above particle size Oxide oxide fine 33 201042281 Particles (this fine particle is called "large particle size ceria fine particles") are used in combination. The small particle size ceria fine particles may be present in the space between the large particle size dioxide fine particles, and thus may serve as a retaining agent for the large particle size dioxide dioxide, the 'field agent' (hGiding agent) ). The average particle diameter of the fine particle size fine silica fine particles is preferably from 1 to 20 nm, more preferably from 5 to 15 nm, and further preferably from 10 to 15 nm. It is preferable to use such a dioxide #fine particle in consideration of the raw material cost and the retaining agent effect. The hollow particles may be subjected to physical surface treatment such as plasma discharge and electro-electric treatment or chemical surface treatment with a surfactant, a coupling agent or the like to stabilize the dispersion in the dispersion solution or the coating solution or to The affinity for the binder component or the adhesion to the binder component is enhanced. It is particularly preferable to use a coupling agent. As the coupling agent, an organochemical compound (for example, a titanium coupling agent or a Wei coupling agent) is preferred. Specifically, it is effective to carry out treatment using a squeezing coupling agent having an acrylonitrile group or a thiol group. The chemical surface of the hollow particles, solvent, catalyst and dispersion stabilizer are described in paragraph [0058]_[〇〇83] of the patent document JP-A-2006-17870. The low refractive index layer is preferably formed by coating a coating composition comprising a film forming solute and to a solvent, drying the coating film to remove the solvent, and applying heat and ionizing radiation. The coating film is cured by at least one. As the solute, a composition comprising a heat-curable or ionizing light-curing type fluorine-containing E1 hydrazine, a hydrolyzate or a partial condensate of an organic Wei compound is preferable. 34 201042281 Further, the composition including the fluorine-containing curable resin is preferably used in the low refractive index layer, and preferably a hydrolyzed product or a partial condensate of the organodecane compound is used. The amount of the hydrolyzate or partial condensate of the auxiliary organodecane compound to be added is from 10 to 40% by weight based on the fluorine-containing curable resin. 2.3 Fluorinated Curing Resin The fluorine-containing curing resin includes, as a component, a compound containing a fully-burning group (for example, (seventeen gas-1,1,2,2-tetradecyl)triethyl) a hydrolyzate of the oxetium) and a dehydrated condensate thereof; and a fluorinated copolymer comprising a gas-containing monomer unit and a constituent unit providing a crosslinking reaction. The low refractive index layer used in the present invention is preferably formed of a cured film of a copolymer comprising a repeating unit derived from a fluorine-containing ethyl fluorene monomer and having (meth) acrylonitrile on the side chain. The repeating unit of the base serves as a necessary constituent unit. In view of the decrease in refractive index and the improvement in film strength, it is preferred to use a curing agent such as a polyfunctional (fluorenyl) acrylate. The mixing ratio of the fluoropolymer and the polyfunctional (meth) acrylate is not limited to a specific value, and it is preferred to determine the ratio such that the fluoropolymer and the plurality after the film is dried No phase separation occurs between the functional (meth) acrylate vinegar. In fact, you can also use only one of them. Examples of the polyfunctional (meth) acrylate include the photopolymerizable polyfunctional monomer described above for the high refractive index layer. Hereinafter, a preferred fluorine-containing curing resin used in the low refractive index layer of the present invention will be specifically described. Examples of the fluorine-containing vinyl monomer include: a fluoroolefin (for example, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene); partially or completely 35 201042281 fluorinated alkyl vinegar Derivatives (e.g., Viscote 6FM available from Osaka 0rganic Chemical Ind y Ltd. and M 2 〇 2G) available from Daikin Ind Enes, Ud, and partially or fully fluorinated vinyl fine. Among them, gaseous hydrocarbons are preferred and hexafluoropropylene is more preferred in view of refractive index 'transferability, permeability and availability. In the present invention, the gas-containing ethylene-based monomer is added so that the fluorine content of the copolymer is preferably 20 to 6% by mass, more preferably 25 to 55 % by mass, and still more preferably as a deduction - such as quality. %. When the composition ratio of the gas-containing ethylene-based monomer is in the city, not only the refractive index can be satisfactorily lowered, but also the film strength can be maintained. The fluorine-containing curing resin used in the low refractive index layer preferably includes a group capable of crosslinking. The constituent unit of the +crosslinking reactivity (Cai Xian Coffee (4) (10) Examples include: a monomer having a functional group capable of self-crosslinking in the molecule (for example, glycidyl (meth)acrylate and glycidyl vinyl ether) a constituent unit obtained by polymerization; a monomer having a carboxyl group, a hydroxyl group, an amino group or a sulfo group (for example, (meth)acrylic acid, hydroxydecyl (meth) acrylate, hydroxyalkyl (meth) acrylate, acrylic acid a constituent unit obtained by polymerization of allyl ester, hydroxyethyl.vinyl ether, hydroxybutyl.vinyl ether, maleic acid, and crotonic acid; and a reactive group for crosslinking by reaction with a polymer, for example a constituent unit after the (meth)acryloyl group is introduced into the above constituent unit (the reactive group for crosslinking can be introduced, for example, by reacting propylene helium with a hydroxyl group) as the low refractive index layer. The fluoropolymer copolymer preferably contains a repeating unit having a (fluorenyl) propylene group on a side bond. Usually, it is preferred that the repeating unit having a (meth) acryl fluorenyl group is 5 to 9 Å in quality. %, More preferably, it is 30 to 70% by mass, and even more preferably 40 to 60% by mass, although the ratio of 36 201042281 varies depending on the kind of the repeating unit obtained from the fluorine-containing vinyl monomer. If it has (meth) It is desirable that the composition ratio of the repeating unit of the acrylonitrile group is increased because the film strength and the refractive index are improved. For the copolymer usable in the present invention, various viewpoints such as adhesion to a transparent support, polymer, and the like are considered. Tg (which contributes to film hardness), solubility in solvents, transparency, slipperiness, and dust/anti-soil properties, in addition to repeating units and side chains derived from fluorine-containing vinyl monomers In addition to the repeating unit having a (meth)acryl fluorenyl group, other vinyl monomers may be appropriately copolymerized. A plurality of vinyl monomers may be combined according to the use, and in the copolymer, such a monomer may be added. It is preferably 0 to 65 mol% in total, more preferably 0 to 40 mol%, even more preferably 0 to 30 mol% in total. There is no particular limitation on the vinyl monomer which can be used in combination, and Examples include olefins (e.g., ethylene, propylene, isoprene, vinyl chloride, vinylidene chloride), acrylic acid (e.g., acrylic acid vinegar, acrylic acid, 2-ethylhexyl propionate, acrylic acid). 2-hydroxyethyl ester), methacrylate (for example, methyl methacrylate, ethyl decyl acrylate, butyl methacrylate, 2-hydroxyethyl methacrylate), styrene derivatives (eg , styrene, p-hydroxymethylstyrene, p-nonyloxystyrene), vinyl ether (eg, mercapto vinyl ether, ethyl vinyl ether, cyclohexyl vinyl ether, hydroxyethyl) Ethyl ether, hydroxybutyl vinyl ether), vinyl ester (eg, ethyl acetate, vinyl propionate, vinyl cinnamate), unsaturated carboxylic acid (eg, acrylic acid, mercapto acrylic acid) , crotonic acid, maleic acid, itaconic acid), acrylamide (for example, hydrazine, hydrazine-dimethyl methacrylate, N-tert-butyl acrylamide, N-cyclohexyl propylene 37 201042281 decylamine) , methacrylamide (for example, n, n-dimethyl methacrylamide) and acrylonitrile. A curing agent can be suitably used in combination with the polymer as described in JP-A-10-25388 and JP-A-10-147739. A preferred embodiment of the fluorine-containing curing resin used in the present invention is a resin represented by Formula 1. [Formula 1]

In Formula 1, L represents a linking group having a carbon number of 1 to 10, preferably 2, more preferably 2 to 4, which may have a linear, branched or cyclic structure and may have an anthracene selected from 〇, N and The hetero atom of S. Preferred examples thereof include, *-(CH2)4-〇-** '*-(CH2)6-〇-**, *-(CH2)2-〇-(CH2)2-〇-** '*- C0NH-(CH2)3-0-** ' (CH2CH(0H)CH2-0-** and *-CH2CH2QCQNH(CH2)r〇·** (the towel* indicates the connection position on the polymer line side ** The position of the (meth) propylene-based side is shown. m represents 〇 or 卜. In the formula 1, X represents no hydrogen atom or methyl group, and in view of curing reactivity, a hydrogen atom is preferred. Table A is a repeating single enthalpy obtained by the optional Unit B monomer. There is no particular limitation on the repetition of the hai, as long as it is capable of being separated from the hexa-propylene propylene and the poly-monomer. The adhesion of the transparent support, the Tg of the polymer (which contributes to the hardness)' in the solvent 38 201042281

The resolving, transparency, smoothness, and anti-dust/anti-soil properties allow for proper selection of repeating units. The repeating unit may be composed of a single vinyl material or a plurality of ethylenic monomers depending on the use. Preferable examples of such a vinyl monomer include • ethylene group 8^1 'e., for example, methyl group, vinyl group, ethyl group, vinyl group, t-butyl group, cyclohexyl group, and the like. Propyl vinyl ether 'hydroxyethyl vinyl ether, hydroxybutyl vinyl ether, glycidyl vinyl ether and allyl vinyl ether; ethylene vinegar' such as vinyl acetate, C Vinyl acetate and vinyl butyrate; (meth)acrylic acid vinery such as methyl (meth) acrylate, ethyl (meth) acrylate, (mercapto) propylene, ethyl, (meth) propylene Acid glycidol vinegar, (mercapto) propylene & C allyl S and (fluorenyl) propylene oxypropyl trimethoxy decane; styrene derivatives, such as stupid ethylene and p-hydroxymethyl styrene; unsaturated Carboxylic acids such as baric acid, maleic acid and itaconic acid; and derivatives thereof. Among them, a vinyl ether derivative and a vinyl ester derivative are more preferable, and a vinyl ether derivative is still more preferable. In Formula 1, X, y and z represent the molar percentage of the respective constituent components and are not in the condition x+y+z=1〇〇 satisfying 3〇$χ$6〇, 5$^^7〇 and 〇'. 35. $55, 3〇Sy$6〇 and 〇szs20, and more preferably 4〇^X^55, 4OS055 and the values. A more preferred embodiment of the copolymer used in the present invention is a copolymer represented by Formula 2: [Formula 2] Seven-B- 0

0-(CH2)ij-〇{!c=cH2 O-f-CH^OH 39

X 22 201042281 In Formula 2, x and y have the same meanings as in Formula 1 and their preferred ranges are also the same as in Formula 1. η represents an integer of 2Sn$10, preferably 2SnS6, more preferably 2$η$4. B represents a repeating unit derived from an optional vinyl monomer and may be composed of a single composition or a plurality of compositions. Examples thereof include those described above as examples of A in Formula 1. Zl and z2 represent the molar percentage of each repeating unit and represent values satisfying 0SzlS65 and 0Sz2$65, preferably OSzl$30 and 0Sz2S10, more preferably OSzlS10 and 0Sz2S5, under the condition x+y+zl+z2=100. The copolymer represented by Formula 1 or 2 can be synthesized, for example, by introducing a (fluorenyl)propenyl group into a copolymer comprising a hexafluoropropylene component and a hydroxyalkyl vinylidene component according to any of the above methods. Preferred examples of the copolymer which can be used in the present invention are described below; however, the invention is not limited thereto. 40 201042281

X ym X LI X number average molecular weight Mn(xl04) P-1 so 0 1 t-CHiCHjO- H 3! Μ ια 0 1 卜CHaCHiO-CHa 4.0 Ρ-3 45 5 1 *-CHaCH2〇- H 2.8 Μ 40 to 1 *-CHjCHi〇- H 3.8 P-5 30 20 1 Bu C^CHaO- H 5.0 Μ 2β 30 Ϊ «-CHaCHgO- H 4.0 Μ SO 0 0 — H Ρ-β 5& D 1 »-〇4Ηβ〇~ H 0.8 ρ-ι SO 0 1 ifc^ofCHa^O- H 1.0 ΜΟ SO 0 l H 7.0 * indicates the polymer main chain side 41 201042281 -fcf2-CF^ -fCHa-CH^ ^ I"J Hub

Huhr〒CHa number average molecular weight Mn(xl04)

LI

Ml 50 0 MZ 50 0 P-13 50 0 f-H 50 e P-15 50 0 P-16 50 0 M7 50 0 Ρ,1β 50 0

CH3 4.0 4.5 45 5.0 3.5 3.0 3,0 3.0

P-1S 50 0 J

3*0 P-tO 40 10

CH, 0·6 * indicates the polymer main chain side β 42 201042281 +cf broad 7 7 +CH 2 "T+b +A 7 CF3 I 〇 CKU1—cch=ch2 number average molecular weight

Abc LI A Mn(xl04) Ρ-21 55 45 0 •-ch2ch2o—♦ Umbrella i_ 1·8 Ρ-22 45 55 0 Take-ch2ch2o_« ο a 0.8 Ρ-23 50 45 5 punches - -ch2ch2ocnhch2ch2o - -ch2- Ch- och2ch2oh 0.7 Ρ-24 50 45 5 卜CH2CIi-CH2〇— OH -ch2-ch- 〇' ch2 \ / 4.0 Ρ-25 50 45 5 Fortunately CH2CHO I·I ch2oh -ch2-ch- 〇> CH2,g?r 4*0 Ρ-26 50 40 10 *-ch2ch2o— -ch2-ch- 1 OCH2CH3 4.0 Ρ-27 50 40 10 ♦»ch2ch2o—♦♦ -ch2-ch- ch3 4.0 Ρ-28 50 40 10 ♦-ch2ch2o—幸韦-CH-CH- 1 COOH 5.0

* indicates that the polymer main chain side β ** indicates the propylene oxime side β 43 201042281

x

-f CHa-^ -f CHa-CH^· 4e-fe =CH^ X y Zl Z2 n X_ B

Number average molecular weight Mn(xl04) P-29 50 40 5 5 2 H -© <*-<»1- 5.0 oa^CH3 P-30 50 35 5 10 2 H '•CHe-CH- 5.0 〇-C (CH3>3 P-31 40 40 10 10 4 CH3 4.0 +CFa-(fPfe +Y7+Z seven-number average molecular weight Z Mn(xl04)

CP3

Ab Y as a copolymer of the fluorine-containing curing resin used in the present invention can be obtained by synthesizing a precursor such as a polymer having a hydroxyl group according to various types of polymerization methods such as solution polymerization, precipitation polymerization, suspension polymerization, bulk polymerization, and emulsion polymerization. Then, a (meth) acrylonitrile group is introduced by the above polymer reaction. The polymerization can be carried out by known operations such as a batch system, a semi-continuous system, and a continuous system. 44 201042281 For the initiation of the polymerization reaction, for example, a method using a radical initiator and a method of irradiating light or light rays can be used. In eg Teiji

Tsuruta's "Polymer Synthesis Method" and "Polymer Synthesis" by Takayuki Ohtsu and Masayoshi Kinoshita, published by Nikkan Kogyo Newspaper Office (1971)

These polymerization methods and polymerization initiation methods are described in Method (pp. 124-154, Kagaku Dojin (1972). 0 Among these polymerization methods, solution polymerization using a radical initiator is preferred. Examples of the solvent include various organic solvents such as ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, tetrahydrofuran, dioxane, hydrazine, hydrazine-di Mercaptoamine, n,N-dimethylacetamide, benzene, toluene, acetonitrile, dichloromethane, chloroform, dichloro-ethane, decyl alcohol, ethanol, 1-propanol, 2-propanol and 1-butanol. These solvents may be used singly or as a mixture of two or more thereof or as a mixture with water. Q The polymerization temperature needs to be set according to the molecular weight of the polymer produced, the type of the initiator, and the like. And may be selected from 0 ° C or lower to 10 (rc or higher, but preferably at a temperature of 50 to 100 ° C. The reaction pressure may be appropriately selected, but it is usually 〇〇98 to 98 MPa (1 〜 100kg/cm2), preferably about 0.098~2.94MPa (l~30kg/cm2) The reaction time is about 5 to 30 (4). The secret obtained by the secret (4) re-brittle agent is preferably isopropanol, hexanyl, methanol, etc. For the IL-containing resin, those products which are also available on the market can be obtained. The amount of the fluorine-containing curing resin to be used is preferably from 1 to 98% by mass, and more preferably from 3 to 95% by mass, and 45 201042281 is based on the total solid content of the coating composition for the low refractive index layer. When the inorganic fine particles are used in combination, the amount used is preferably from 3 to 80% by mass, and more preferably from 40 to 75% by mass. 2.4 A coating composition for forming a low refractive index layer is usually used. The coating composition for forming the low refractive index layer used in the present invention is in a liquid form, and by the fluorine-containing curing resin, the inorganic fine particles desirably contained, various additives (if necessary), and free radicals The polymerization initiator is prepared by dissolving in a suitable solvent. At this time, the concentration of the solid content is appropriately selected depending on the use, but it is usually about 0.01 to 60% by mass, preferably 〇5 to 55% by mass, Preferably, the amount of the radical polymerization initiator is the type of the initiator which generates a radical upon application of heat or the type of the initiator which generates a radical upon application of light. As the polymerized compound, an organic or inorganic peroxide and an organic azo or a diazo compound can be used. More specifically, examples of the organic peroxide include peroxy Z, domain peroxidation, and peroxidized laurel , oxidized ethylene, oxide, cumene hydroperoxide and t-butyl hydroperoxide; examples of the #peroxide include hydrogen peroxide, ammonium persulfate and persulfate. Examples of the azo compound include 2 , 2, azobisisobutyronitrile, 2, 2, _ example scoop nitrile and ^, 2 · dioxane dicyclohexanal dinitrile; 1 of the diazo compound = diazane and residual diazonium Compound. When a compound which radically polymerizes upon application of light is used, it is _ by a light shot. The photo-free radical polymerization initiator of the real 46 201042281 examples include acetophenones, benzoin, benzophenones, hydrogen + lin, ketones, onion, thioxanthone, azo compounds, Examples of the ruthenium halide, the 2 3-dialkyldione compound, the disulfide compound, the fluoroamine compound, and the aryl group, and the acetophenones include 2,2-diethoxyacetophenone, and the pair. Methyl acetophenone, 1-hydroxydimethyl ketone, 1-hydroxycyclohexyl styryl-indole, 2-methyl-1-(4-methylthio basic)-2-yl-yl-1- Propionin and 2_节^^丞dimethylamino

1-(4-morpholinylphenyl)-butanone. Examples of benzoin include benzoic acid esters, benzoin tosylate, benzoin methyl ether, Anquanfan, 'heart', and benzoin isopropyl ether. Examples of benzophenones include diphenyl显|, & 厶, 4*~ dibenzophenone, 4,4'-dioxadibenzophenone and p-benzophenone. Examples of gas-emulsified phosphines include 2,4,6-three Further, it is preferable to use a sensitizing dye in combination with the photoradical polymerization initiator. The amount of the compound which initiates radical polymerization upon application of heat or light is preferably used. There is no limitation as long as it can initiate polymerization of a CC double bond, and the addition is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass, and even more preferably 2 to 5 % by mass, based on the formation of the The total solid content of the composition of the low refractive index layer. 2.5 Solvent The solvent contained in the coating composition for the low refractive index layer is not particularly limited as long as the fluorine-containing cured resin can be dissolved or uniformly dispersed. Without causing any precipitation, and combining two or more solvents Examples thereof include ketones (for example, propionyl, decyl.ethyl ketone and methyl isobutyl ketone), esters (for example, ethyl acetate and butyl acetate), ethers (for example, tetrahydroanthracene and 1). , 4-dioxane), alcohol (eg 'methanol, ethanol, isopropanol, butyl 47 20104228 alcohol, hex- ▲ 26 ~ alcohol), aromatic hydrocarbons (eg, toluene and xylene) and water. Other compounds contained in the coating composition for forming the low refractive index layer have properties such as smoothness and fingerprinting, and water and chemical additives can be appropriately added. In the case of adding such an additive, the additive is preferably Γ% Γ, %, more preferably 0 to 10% by mass, still more preferably 0 to 5 by weight. Adding, based on the total solid content of the low refractive index layer. The agent, the low refractive index layer may contain an inorganic filler, a stone smelting coupling agent, and a lubricating coupled sword scorpion miscellaneous solution. °Lubricant. Examples of the coupling agent include a group containing a weaving gas, a group, a mesyl group, and a methoxy group. Brewing a gas-linking agent' and more preferably comprising an epoxy group, a polymerizable such as, for example, '(fluorenyl) acryloxy), or a polymerizable amide (for example, an amino group or a methacryl) The hydrazine coupling agent is preferably a fluorine-containing compound which is introduced into a polyanthracene portion or an organic sulfonate-methyl oxalate. (4) The Wei-based compound is improved by knowing (4) the refractive index of the coating = the hydrolysis and/or condensation of the towel, and the anti-heart becomes the hydrolyzate and the hydrazine/or condensate material only serves as a binder in the composition. The film coating is cured and the film coating is softened. The organic methylate compound used in the coating composition for forming the low refractive index layer of the present invention includes the compound represented by the following formula 3. Excellent 48 201042281 [Formula 3] ν /η

Here, 'Χ, *·〇Η, a halogen atom, a 12 group or a. C〇Ri2 earth group 'sub and R represents a silk, alkenyl or aryl group. rI2 indicates that _ is equal to 4 and represents a positive integer, respectively. More specifically, soil: r: a substituted or unsubstituted fluorenyl group having no carbon number (for example, methyl, ethyl, propyl, isopropyl, butyl, hexyl and octyl, having 2 to 1) a substituted or unsubstituted dilute group of a carbon number of hydrazine (for example, an ethylene group, a propyl group or a 2-butene group), or a substituted or unsubstituted aryl group having a carbon number of 6 to _ Or a group in which n is the same as the group of the mRn or Rl2 filament having the same meaning as the nominee represented by R11, and an example of a preferred substituent is a tetracycline (for example, a, chlorine, desert), light base, Sulfhydryl, alkyl, epoxy, alkyl (eg, f, ethyl, iso-, propyl, t-butyl), aryl (eg, phenyl, naphthyl), aromatic heteropoly a group (for example, "fumanyl, π-saltyl, butyl", alkoxy (for example, methyl lactyl, ethoxy, isoxyloxy, hexyloxy), aryloxy (for example, stupid) Oxygen) sulfur-based (eg, 'methylthio, ethylthio), arylthio (eg, phenylthio), phenyl (eg, 'ethenyl, propyl), decyloxy (eg, acetic acid) Oxypropenyloxy, Methyl endo-oxyalkyl), oxy-oxyl-based (for example, a gas-methyl group, ethoxy group), an aryloxy group (such as a phenoxy group), a mercapto group (for example, 'amino oxime) Base, N. methyl carbyl decyl, N, N dimethyl carbyl, Ν 'methyl octyl amide, and aryl amino (eg, amino, benzylamino, propyl The amino group, the methacrylic acid and the amino group. The compound of the formula 3 is formed into a matrix by a so-called sol _; suspect 49 201042281 gel method. The compound of the formula 3 is represented by the following four molecular formulas. [Formula 3a] Si ( Xn)4 [Formula 3b] R"Si(Xn)3 [Formula 3c] Rn2Si(Xn)2 [Formula 3d] R113SiX11 The composition of the formula 3a is described in detail below. Specific examples of the compound represented by the formula 3a include tetramethoxy Decane, tetraethoxy decane, tetraisopropoxy decane, tetra-n-propoxy decane, tetra-n-butoxy decane, tetra-sec-butoxy decane and tetra-tert-butoxy decane. Particularly preferred is tetramethoxy decane. And tetraethoxy decane. The component of formula 3b is described below. In the component of formula 3b, R11 represents a group having the same meaning as R11 of formula 3, and Examples include alkyl groups such as decyl, ethyl, n-propyl and isopropyl, T-methylpropyl, vinyl, CF3CH2CH2CH2-, c2f5ch2ch2ch2-, c3f7ch2ch2ch2-, c2f5ch2ch2-, CF3OCH2CH2CH2-, C2F5OCH2CH2CHr, C3F7OCH2CH2CHr, (CF3 2CHOCH2CH2CH2-, C4F9CH2OCH2CH2CH2-, 3-(perfluorocyclohexyloxy)propyl, h(cf2)4ch2och2ch2ch2-, H(CF2)4CH2CH2CH2-, 3-glycidoxypropyl, 3-propyleneoxypropyl 3-mercaptopropenyloxypropyl, 3-propionyl, stupyl and 3,4-epoxycyclohexylethyl. X represents -OH, a halogen atom, a _R2 group or a _〇c〇Ri2 group. R12 represents a group having the same meaning as R" of the formula 2, and an alkoxy group having the inverse of the stone of the formula 5 or a decyloxy group having a carbon number of 丨4. Examples thereof include a gas atom, a methoxy group, an ethoxy group, a n-propoxy group, an isopropoxy group, a n-butoxy group 50 201042281 group, a sec-butoxy group, a t-butoxy group and an ethoxy group. Specific examples of the component of the formula 3b include methyltrimethoxydecane, decyltriethoxydecane, ethyltrimethoxydecane, ethyltriethoxydecane, n-propyltrimethoxydecane, n-propyl Triethoxy decane, isopropyl trimethoxy decane, isopropyl triethoxy decane, chloropropyl trimethoxy decane, 3-chloropropyl triethoxy decane, vinyl trimethoxy decane, Vinyl triethoxy decane, 3-glycidoxypropyl trimethoxy decane, 3-glycidoxypropyl triethoxy decane, 3-propenyl methoxypropyl trimethoxy decane, 3- Propylene oxiranyl triethoxy decane, 3-methyl propylene oxypropyl tridecyl decane, 3-mercapto propylene oxypropyl triethoxy decane, 3-mercaptopropyl trimethoxy decane , 3-mercaptopropyltriethoxydecane, phenyltrimethoxydecane, phenyltriethoxydecane, 3,4-epoxycyclohexylethyl.trimethoxydecane, 3,4-epoxy ring Hexylethyl.triethoxydecane, CF3CH2CH2CH2Si(OCH3)3, C2H5CH2CH2CH2Si(OCH3)3, C2F5CH2CH2Si(OCH3)3, C3F7CH2CH2CH2Si(OCH3)3, C2F5OCH2CH2CH2Si(OCH3)3 C3F7OCH2CH2CH2Si (OC2H5) 3, (CF3) 2CHOCH2CH2CH2Si (OCH3) 3, C4F9CH2OCH2CH2CH2Si (OCH3) 3, H (CF2) 4CH2〇CH2CH2CH2Si (OCH3) 3 and 3- (perfluoro cyclohexyl) propyl Silane. Among them, an organic decyl group compound having a fluorine atom is preferred. If an organomethylalkylene compound having no fluorine atom is used as R, it is preferred to use mercaptotrimethoxysulfate or methyltriethoxysulfonate. Among these organic methylation compounds, one of them or a combination of two or more of them may be used. 51 201042281 The composition of formula 3c is described below. The component of the formula 3c is an organocarboalkyl compound represented by the formula: R^SKXlHR11 and X11 have the same meanings as R11 and X11 defined for the organodecyl group compound used as the component of the formula 3b}. Here, a plurality of R11 may not be the same group. Specific examples of the organocarboalkylene compound include dimethyldimethoxydecane, dimethyldiethoxydecane, diethyldimethoxydecane, diethyldiethoxydecane, and di-n-propyl Dimethoxy decane, di-n-propyldiethoxy decane, diisopropyl decyloxydecane, diisopropyldiethoxy decane, diphenyldimethoxydecane, diphenyl Ethoxy decane, (CF3CH2CH2)2Si(OCH3)2, (CF3CH2CH2CH2)2Si(OCH3)2, (C3F7OCH2CH2CH2)2Si(OCH3)2, [H(CF2)6CH2OCH2CH2CH2]2Si(OCH3)2 and (C2F5OCH2CH2)2Si ( OCH3)2 〇 is preferably an organocarboalkyl compound having a fluorine atom. If an organic formamidine compound having no fluorine atom is used as R11, dimethyldimethoxy decane or dimethyldiethoxy decane is preferred. In the organocarboalkylene compound represented by the component of the formula 3c, one of them may be used singly or two or more of them may be used in combination. The composition of formula 3d is described below. The component of the formula 3d is an organocarboalkyl compound represented by the following formula: Ru3SiXu{here, R11 and X11 have the same meanings as R11 and X11 defined for the organocarboalkyl compound used as the component of the formula 3b}. Here, a plurality of R11 may not be the same group. Specific examples of the organocarboalkylene compound include trimethyl decyl decane, trimethyl ethoxy decane, triethyl methoxy sulphur, triethyl ethoxy calcination, and tri-n-propyl Oxylate, 52 201042281 Tri-n-propyl ethoxy oxime, triisopropyl methoxy oxime, triisopropyl ethoxy decane, triphenyl methoxy decane and triphenyl ethoxy Decane. In the present invention, the components of the formulae 1 to 3d may be used singly or as a mixture of two or more of them. When used as a mixture, the mixing ratio is: the composition of the formula 3b is 〇~1 〇〇 by weight, preferably 1 to 60 parts by weight, and more preferably 1 to 40 parts by weight, based on 1 part by weight of the component of the formula 3a The composition of the formula 3c is 〇1 to 1 part by weight, preferably 〇1 to 5 parts by weight, and more preferably 〇0.50 to 3 parts by weight, based on 1 part by weight of the component of the formula 3a; the component of the formula 3d is 〇 10 : 10 parts by weight, preferably 0.1 to 5 parts by weight, and more preferably 0.5 to 3 parts by weight based on 100 parts by weight of the component of the formula 3a. The ratio of the component of the formula 3a in the components of the formula 3a to the formula 3d is preferably 30% by mass or more based on 1% by mass of the total of the organomethylalkylene compound. When the ratio of the component to the component is 30% by mass or more, it is 'desirable' because there is no problem such as curability of the obtained film coating or a decrease in adhesion. In addition to the formula such as the ～% component, it is also preferable to add the Japanese Patent Document Jp A 2〇〇6_3〇74〇, [〇〇39] 和 and [0052] to '7]. Those compounds, or a coating composition for forming a low refractive index layer described herein, may be suitably prepared. 2.8 Preparation of Low Refractive Index Layer The low refractive index layer is formed by coating a hollow particle, a fluorine-containing cured resin, an organic formamidine compound, and other optional components dissolved or dispersed therein (if any) a coating composition necessary to contain these optional components; and crosslinking or polymerization by applying heat or ionizing light at the same time as coating or after coating and drying 53 201042281 The curing of the coating is y When cross-linking or agglomerating into a (10) family layer by an electro-curable compound, the polymerization is preferably carried out in an atmosphere which is preferably a material or a lower reductive. The outermost layer having excellent physical strength and chemical resistance can be obtained by the cleavage layer at a concentration of 1% by volume or less. The oxygen rolling degree is preferably 6% by volume or less, more preferably 4% by volume or less, and further preferably 2% by volume or less, most preferably 2% by volume or less. The gas of the singularity is more preferably replaced with nitrogen (nitrogen purge: nitrogen gas concentration: about 79% by volume, oxygen concentration: _vol%) to adjust the oxygen concentration to 10% by volume or less. Example 1 A coating composition for a high-refractive-index high-hardness layer was coated on a triacetate cellulose substrate (TAC-TD80U, having a thickness of 8 ()_ using a 110-gauge gravure coater (gravure c〇ater). Refractive index: 丨49, manufactured by Fuji ph〇t〇 Film Co., Ltd.) was dried at 1 Torr (TC for 2 minutes, and cured by irradiation with ultraviolet rays to form a thickness of 4.2 μm and 151). a high hardness layer of the south refractive index of the refractive index. Next, a coating composition for the low refractive index layer is coated on the high refractive index high hardness layer using a 180-mesh gravure coater, and dried at 100 ° C 2 minutes' and cured by UV irradiation to form a low refractive index layer having a thickness of 11 Å and a refractive index of 1.36. Thus, the antireflection film of the present invention was obtained. 54 201042281 Example 2 Using a 110 gravure coater A coating composition for a high refractive index high hardness layer is coated on a cellulose triacetate substrate having a thickness of (10) (TAC-TD80U 'refractive index: i 49, manufactured by ph〇t〇Film c〇Ud) 'Dry at 100 c for 2 minutes and by UV irradiation And cured to form a high refractive index high refractive layer having a thickness of 4.5 μm and a refractive index of 154. 0 Next, a coating composition for a low refractive index layer was coated on the high refractive index using a 180-mesh gravure coater. On the high hardness layer of the rate, it was cured at 1 〇〇 <3 (: 2 min after drying) and cured by UV irradiation to form a low refractive index layer having a thickness of 11 〇 nm and a refractive index of 1.36. Inventive antireflection film. The obtained antireflection film was evaluated according to the following method. λ. Example 3 A coating composition for a high refractive index high hardness layer was coated with a thickness of 8 〇μΓ using a 110-mesh gravure coater. A cellulose triacetate substrate Q (TAC-TD80U, refractive index: 1.49, manufactured by Fuji Photo Film Co., Ltd.), dried at 100 ° C for 2 minutes, and cured by irradiation with ultraviolet rays to form having 4· a high-hardness layer having a thickness of 6 μm and a refractive index of 1.57. Next, a coating composition for a low refractive index layer is coated on the high-refractive-index high-hardness layer using a 180-gauge gravure coater, Dry at l〇〇°c 2 minutes, and cured by UV irradiation to form a low refractive index layer having a thickness of li〇nin and a refractive index of 1.36. Thus, an antireflection film of the present invention was obtained. 0 55 201042281 Example 4 Gravure coating machine using 110 mesh A coating composition for a high-refractive-index high-hardness layer was coated on a triacetate substrate (TAC-TD80U, refractive index: i. 49, manufactured by Fuji Photo Film Co., Ltd.) having a thickness of It was dried at 100 ° C for 2 minutes, and cured by irradiation with ultraviolet rays to form a high refractive index high hardness layer having a thickness of 4.3 μm and a refractive index of 1 to 54. Next, a coating composition for a low refractive index layer was coated on the high refractive index high hardness layer using a 180-mesh gravure coater, dried for 2 minutes, and cured by UV irradiation to form a film having 丨15 nm. A low refractive index layer having a thickness and a refractive index of 1.33. Thus, the antireflection film of the present invention was obtained. Example 5 A coating composition for a high refractive index high hardness layer was coated on a triacetate cellulose substrate (TAC-TD80U, refractive index: 1.49, by Fuji Photo Film Co, having a thickness of 80 μm using a 110-gauge gravure coater. .. manufactured.) was dried at 100 ° C for 2 minutes and cured by irradiation with ultraviolet rays to form a high refractive index high hardness layer having a thickness of 4.2 μηη and a refractive index of 1.54. Then, the coating composition for the low refractive index layer was coated on the high refractive index high hardness layer using a 180-mesh gravure coater to dry at 10 ° C for 2 minutes, and cured by UV irradiation. A low refractive index layer having a thickness of 110 nm and a refractive index of 1.36 was formed. Thus, the antireflection film of the present invention was obtained. 0 56 201042281 Example 6 A coating composition for a high refractive index high hardness layer was coated on a triacetate cellulose substrate having a thickness of 8 μm using a 110 gravure coater ( TAC-TD80U 'refractive index: ! 49, manufactured by Fuji Photo Film Co., Ltd.), dried at 100 ° C for 2 minutes, and cured by irradiation with ultraviolet rays to form a thickness of 4. 2 μm and 1.54. A high-refractive layer of high refractive index of refractive index. 0 Next, the coating composition for the low refractive index layer was coated on the high refractive index high hardness layer using a 180-gauge gravure coater, dried at 1 Torr (2 minutes under TC) and irradiated by uv. It was cured to form a low refractive index layer having a thickness of 丨10 nm and a refractive index of 1.38. Thus, the antireflection film of the present invention was obtained. Comparative Example 1 A high-hardness layer for high refractive index was used using a 110-mesh gravure coater. The coating composition was coated on a cellulose triacetate substrate (TAC_TD80U, refractive index: 1.49, manufactured by Fuji Photo Film Co., Ltd.) having a thickness of 8 μm, dried under a loot for 2 minutes, and irradiated with ultraviolet rays. And curing to form a high hardness layer having a thickness of 4·3 μηη and a refractive index 45 high refractive index of 45. Next, a coating composition for a low refractive index layer is coated at the height using a 180-mesh gravure coater. On the high hardness layer of the refractive index, the bond was dried for 2 minutes, and cured by Uv irradiation to form a low refractive index layer having a thickness of i 1 〇 和 and a refractive index of 1.36. Anti-reflective film 57 201042281 Comparative Example 2 A coating composition for a high-refractive-index high-hardness layer was coated on a triacetate cellulose substrate (TAC_TD80U, refractive index: 1.49, by Fuji Photo Film) having a thickness of 80 μΓ using a 110-gauge gravure coater. Co., Ltd. manufactured) was dried under a loot for 2 minutes, and cured by irradiation with ultraviolet rays to form a high-refractive-index high-hardness layer having a thickness of 3·9 μηι and a refractive index of 1.48. A gravure coater coats a coating composition for a low refractive index layer on the high refractive index high hardness layer, dried at 10 (TC for 2 minutes ' and cured by irradiation to form 11 〇 mn A low refractive index layer having a thickness and a refractive index of 1.36. Thus, an antireflection film according to a comparative example was obtained. Comparative Example 3 A coating composition for a high refractive index high hardness layer was coated with a 110-mesh gravure coater. A cellulose triacetate substrate (TAC-TD80U 'refractive index: 149, manufactured by Fuji Photo Film Co., Ltd.) having a thickness of 8 μm was dried at 10 (dry for 2 minutes at TC) and cured by irradiation with ultraviolet rays. A high refractive index hardness layer having a thickness of 4.5 μm and a refractive index of 丨·63 is formed. Next, a coating composition for a low refractive index layer is coated on the high refractive index using a 180-mesh gravure coater. On the high hardness layer, it was dried at 1 ° C for 2 minutes, and cured by UV irradiation to form a low refractive index layer having a thickness of 11 〇 nm and a refractive index of 1.36. Thus, antireflection according to the comparative example was obtained. membrane. 58 201042281 Comparative Example 4 A coating composition for a high-refractive-index high-hardness layer was coated on a triacetate cellulose substrate (TAC-TD80U 'refractive index: ! 49, having a thickness of 8 μ μπ 1 using a 110-gauge gravure coater. It was dried by ph〇t〇Hlm c〇·, Ltd.) at '100 ° C for 2 minutes, and cured by irradiation with ultraviolet rays to form a high refractive index having a thickness of 4.2 μm and a refractive index of 1.68. Hardness layer. 0 Next, the coating composition for the low refractive index layer was coated on the high refractive index high hardness layer using a 180-mesh gravure coater, dried under a loot: 2 minutes' and cured by UV irradiation. A low refractive index layer having a thickness of i 10 nm and a refractive index of 1.36 was formed. Thus, an anti-reflection film according to the comparative example was obtained. Comparative Example 5 A coating composition for a high refractive index high hardness layer was coated on a triacetate substrate Q having a thickness of 8 〇μπ1 using a 110-mesh gravure coater (TAC_TD80U' refractive index: 1.49, by Fuji Photo Film Co., Ltd. manufactured) was dried at 100 ° C for 2 minutes, and cured by irradiation with ultraviolet rays to form a high refractive index south hardness layer having a thickness of 4·2 μηη and a refractive index of 丨.54. Then, a coating composition for a low refractive index layer was coated on the high refractive index high hardness layer using a 180-mesh gravure coater, dried at 1 °c for 2 minutes' and cured by UV irradiation. To form a low refractive index layer having a thickness of 110 nm and a refractive index of 1 to 43. Thus, an antireflection film according to the comparative example was obtained. 59 201042281 Comparative Example 6 A coating composition for a high-refractive-index high-hardness layer was coated on a triacetate substrate having a thickness of 80 μm using a 110-gauge gravure coater (TAC-TD80U >: 1.49 ' *Fuji Photo Film Co., Ltd., manufactured by Co., Ltd., was dried at 100 C for 2 minutes, and cured by irradiation with ultraviolet rays to form a high refractive index high hardness layer having a thickness of 4·2 μm and a refractive index of 1.54. Next, a coating composition for a low refractive index layer was coated on the high refractive index high hardness layer using a 180-mesh gravure coater, dried at 1 Torr (2 minutes under rc' and cured by UV irradiation. A low refractive index layer having a thickness of 1 〇 〇 ΐΏ and a refractive index of 1.48 was formed. Thus, an antireflection film according to the comparative example was obtained. The antireflection film produced by the above examples and comparative examples was evaluated according to the following test examples, The results are shown in Table 1. [Test Example 1: Evaluation of surface reflectance] A black anti-glare tape or an anti-glare paint was applied to the opposite side of the anti-reflection film while the film was After the backside treatment was black, the surface reflectance at an incident angle (=reflection angle) of 5 ° C in the wavelength range of 380 to 780 nm was measured using a UV spectrophotometer (Shimazu UV-PC3600). The obtained reflection spectrum is shown in Fig. 2 The average specular reflectance in the range of 480 to 680 nm was calculated to evaluate the antireflection performance. [Test Example 2 · Evaluation of rainbow effect] A black antiglare tape or antiglare coating was used for the A4 size antireflection film. On the opposite side, after treating the back side of the film as black, the rainbow effect was visually detected under the lamp of Incand 60 201042281. The evaluation results of the rainbow effect are expressed as: ◎ (excellent), 〇 (good), △ (normal) and x (poor). [Table 1]

Refractive index of high refractive index high hardness layer (nl) Refractive index of low refractive index layer (n2) Average surface reflectance (%) in the range of 480-680 nm Rainbow effect Example 1 1.51 1.36 0.32 〇 Example 2 1.54 1.36 0.25 ◎ Example 3 1.57 1.36 0.35 〇 Example 4 1.54 1.33 0.15 ◎ Example 5 1.54 1.36 0.25 ◎ Example 6 1.54 1.38 0.40 〇 Comparative Example 1. 1.45 1.36 0.92 Δ Comparative Example 2 1.48 1.36 1.12 Δ Comparative Example 3 1.63 1.36 1.16 Δ Comparative Example 4 1.68 1.36 1.25 X Comparative Example 5 1.54 1.43 1.23 X Comparative Example 6 1.54 1.48 1.34 X Although the prior art antireflection film having a surface reflectance of 1% or higher is reflected by Fig. 2 The large amplitude of the spectrum shows a poor rainbow effect, but the antireflection film according to the present invention has an average surface reflectance of 〇·4% or less, and has an excellent rainbow effect due to a large decrease in the amplitude of the reflection spectrum. Further, it can be seen from Table 1 that the embodiment of the present invention has a very low average surface reflectance of 0.4% or less at an incident angle of 5 ° C in the wavelength range of 480 to 680 nm, thereby achieving a reduction Rainbow effect. Therefore, the antireflection film of the present invention has an effect of very low reflectance, excellent rainbow effect and the like. [Simple description of the map]

1 is a cross-sectional view of an antireflection film according to the present invention; and FIG. 2 is a view comparing wavelengths of a reflection spectrum of UV 61 201042281 of the prior art anti-reflection film (4) and the antireflection film of the present invention. [Description of main component symbols] 1··· The wavelength of the UV-reflective spectrum of the antireflection film of the present invention is 20·2·"The wavelength of the UV 30·reflectance spectrum of the prior art antireflection film•Transparent substrate•High refractive index High hardness layer* low refractive index layer

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Claims (1)

201042281 VII. Patent application scope: 1. An anti-reflection film comprising: a cellulose triacetate (TAC) transparent substrate for protecting a polyvinyl alcohol (PVA) polarizing plate; a high refractive index coated on the transparent substrate a high hardness layer having a refractive index and an antistatic function of from 1 to 50 to 1.60; and a low refractive index coated on the high hardness layer of the high refractive index; The low refractive index layer has a refractive index of 1.31 to 1.40 and is wet, ", and coated" wherein the antireflection film has a wavelength range of 480 to 680 nm at 5. ^ at an incident angle of 0.1 to 0.4%. The average anti-reflection film of the anti-reflection film of claim 1, wherein the anti-reflection film has an antistatic index of 104 to 101 G. 3 · Anti-reflection of claim 1 of the patent scope a film, wherein the high refractive index tantalum hardness layer has a thickness of ο. 1 〜 and the low refractive index layer has a thickness of 90 〜130 nm. 4. The antireflection film of the scope of the application of the patent item a step comprising the low refractive index layer and the high fold The adhesive layer between the high hardness layers or the high refractive index high hardness layer includes a surface of the adhesive layer of the adhesive layer that is in contact with the lower side of the low refractive index layer The centerline average coarseness of 0.001 to 〇.〇3〇μιη _. 5• The anti-reverse _, as described in the patent application scope, wherein the high-refractive-index high-hardness layer is coated by a coating comprising the following substances Coating of 63 201042281. at least one metal oxide particle selected from the group consisting of oxides of titanium, zirconium, indium, zinc, tin, aluminum, and antimony; anionic dispersant; having at least trifunctional polymerizable groups a curing resin; a polymerization initiator; and a solvent. 6. The anti-reverse (IV) of claim 5, wherein the high-removability inter-hardness layer is formed by coating the coating composition; The film is dried to remove the solvent; and the coating film is cured by applying at least one of heat and ionizing radiation. 7. The antireflection film of claim 1, wherein the low refractive index layer Including the ability to apply heat a fluorine-containing compound which is cured by at least one of ionizing radiation, and has a dynamic friction coefficient of 〇〇3 to 〇15 and a contact angle with water of 95° to 120°. 8· a polarizing plate including an antireflection film The polarizing plate has a polarizing plate and a surface protective film adhered to at least one side of the polarizing plate, wherein the surface protective film is anti-reflection according to any one of claims 1 to 7. a film, and wherein the anti-reflection film is prepared by coating an anti-reflective film with a test solution on a transparent substrate side opposite to a side on which a low-refractive-index layer is to be formed to form the low refractive index The layer is simultaneously or subsequently saponified; the coated substrate is heated, followed by washing with water or neutralized; and the substrate is adhered to the polarizing plate. The display device for an antireflection film according to any one of claims 1 to 7. A display device comprising a polarizing plate as described in claim 8 of the patent application. 64