JP2008286878A - Antiglare film and display using same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antiglare film capable of achieving satisfactory balance between suppression of dazzle and improvement in transmissive clearness, and to provide a display using the same. <P>SOLUTION: The antiglare film is constituted by laminating on a transparent support an antiglare hard coat layer in which an antiglare hard coat layer forming composition containing light transmitting particulate in a binder including an actinic energy ray curing resin and a photo polymerization initiator is cured. A refractive index difference between the cured substance of the binder and the light transmitting particulate is 0 to 0.05. In the surface of the antiglare hard coat layer, an arithmetic mean roughness (Ra) measured on the basis of JIS B 0601-1994 is 0.01 to 0.30 μm. A mean interval (Sm) of irregularity is 10 to 300 μm. It is preferred that inorganic particulate having a mean particle size smaller than that of the light transmitting particulate is included in the binder of the antiglare hard coat layer forming composition. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an anti-glare film that is used by being attached to the outermost surface on the observation side of various displays, and particularly suitable for suppressing glare when installed on a high-definition display that displays images. And a display using the same.

  In this type of display, if light from the outside is reflected without diffusing on its surface (display surface), a front image is reflected there, and the internal image becomes very difficult to see. Is provided with an antiglare film for diffusing light from the outside. The conventional anti-glare film is of any type, so that the anti-glare layer surface is light-diffused to obtain an anti-glare action. Need to be larger. However, when the unevenness increases, there is a problem that the haze value of the antiglare layer increases, and the image clarity decreases accordingly. Further, the conventional type antiglare film has a problem in that a so-called scintillation (glaring, surface glare) shines on the film surface and the visibility of the display screen decreases.

That is, when the haze value of the surface, which is a typical evaluation standard for an antiglare film, is lowered, the glare feeling called so-called face glare becomes stronger, and when the haze value is increased to eliminate this, the whole becomes whitish. As a result, the black density is lowered and the contrast is deteriorated. As an attempt to solve such problems, an antibacterial compound containing translucent fine particles having an average particle diameter of 0.5 to 5 μm and a difference in refractive index from the transparent resin of 0.02 to 0.2. A dazzling film is disclosed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-326608 (pages 2 and 6)

  However, in the antiglare film described in Patent Document 1, the surface roughness of the antiglare layer, specifically, the ten-point average roughness (Rz) is formed in a rough range of 4.4 to 8.8 μm. (Table 1 on page 6 of Patent Document 1), it is possible to suppress glare, but there is a problem that the light transmission is deteriorated and the transmission clarity (image definition) is lowered. It was. The glare on the surface of the antiglare film and the transmitted clearness are contradictory properties and greatly depend on the uneven shape of the surface of the antiglare layer, so it is very difficult to adjust the balance. Therefore, as in the invention described in Patent Document 1, it is possible to achieve both glare and clear transmission only by defining the ten-point average roughness (Rz) as the surface roughness of the antiglare layer. There wasn't.

  Accordingly, an object of the present invention is to provide an antiglare film capable of exhibiting a good balance between suppression of glare and improvement of transmission clarity, and a display using the same.

  In order to achieve the above object, the antiglare film of the first invention in the present invention contains translucent fine particles in a binder containing an active energy ray-curable resin and a photopolymerization initiator on a transparent support. An antiglare hard coat layer obtained by curing the composition for forming an antiglare hard coat layer is formed. And the arithmetic mean measured by the refractive index difference of the hardened | cured material of the said binder and translucent microparticles | fine-particles is 0-0.05, and is measured based on JISB0601-1994 in the surface of a glare-proof hard coat layer. The roughness (Ra) is 0.01 to 0.30 μm, and the average interval (Sm) of the unevenness is 10 to 300 μm.

The antiglare film of the second invention is characterized in that, in the first invention, the binder contains inorganic fine particles having an average particle diameter smaller than that of the light-transmitting fine particles.
The anti-glare film of the third invention is the anti-glare film of the first or second invention having an image sharpness measured through an optical comb having a width of 2 mm using an image sharpness measuring device based on JIS K 7105-1981. The value is 50% or more, and the image sharpness value measured by 60 ° reflection is 60% or less.

  In any one of the first to third inventions, the antiglare film of the fourth invention has a refractive index lower than the refractive index of the antiglare hard coat layer on the antiglare hard coat layer. A low refractive index layer is provided.

  The display of 5th invention is equipped with the anti-glare film which concerns on any one of 1st to 4th invention on the outermost surface at the side which displays an image, It is characterized by the above-mentioned.

According to the present invention, the following effects can be exhibited.
In the antiglare film of the first invention, the refractive index difference between the cured binder and the light-transmitting fine particles is suppressed to a small range of 0 to 0.05. For this reason, the light transmittance within the antiglare hard coat layer can be improved. Moreover, the arithmetic average roughness (Ra) measured in accordance with JIS B 0601-1994 on the surface of the antiglare hard coat layer is 0.01 to 0.30 μm, and the average interval (Sm) of the unevenness is 10 to 300 μm. It is limited to a small range. Therefore, light transmission can be maintained while diffusing light on the surface (outer surface) of the antiglare hard coat layer. Therefore, the antiglare film can exhibit a good balance between suppression of glare and improvement of transmission clarity.

  In the antiglare film of the second invention, the binder contains inorganic fine particles having an average particle size smaller than that of the translucent fine particles. Therefore, in addition to the effect of 1st invention, while being able to adjust the refractive index of the hardened | cured material of a binder, translucent fine particles can be floated on the surface and anti-glare property can be adjusted.

  In the antiglare film of the third invention, the value of image definition is 50% or more, and the value of image definition measured by 60 ° reflection is 60% or less. Therefore, in addition to the effects of the first or second invention, it is possible to improve the transmission clarity when viewed from the front, and to improve the antiglare property by suppressing reflection.

  In the antiglare film of the fourth invention, a low refractive index layer having a refractive index lower than that of the antiglare hard coat layer is provided on the antiglare hard coat layer. Therefore, in addition to the effects of any one of the first to third inventions, reflection on the surface of the antiglare hard coat layer can be effectively suppressed.

  The display of the fifth invention includes the antiglare film according to any one of the first to fourth inventions on the outermost surface on the image display side. Therefore, it is possible to provide a display that can suppress glare due to interference with display pixels and that has excellent transmission sharpness.

Hereinafter, embodiments that are considered to be the best modes of the present invention will be described in detail.
The antiglare film of this embodiment is for forming an antiglare hard coat layer containing translucent fine particles in a binder (binder) containing an active energy ray-curable resin and a photopolymerization initiator on a transparent support. An antiglare hard coat layer obtained by curing the composition is formed. And the refractive index difference of the hardened | cured material of the said binder and translucent fine particles is set to 0-0.05, and the arithmetic operation measured based on JISB0601-1994 in the surface of an anti-glare hard-coat layer The average roughness (Ra) is set to 0.01 to 0.30 μm, and the average interval (Sm) of the unevenness is set to 10 to 300 μm. Note that the difference in refractive index between the cured binder and the translucent fine particles being zero means that the refractive index of the cured binder and the translucent fine particles are the same.

  Thus, by reducing the difference in refractive index between the cured binder and the light-transmitting fine particles, light transmittance can be maintained, and at the same time, by reducing Ra and Sm, the antiglare hard coat layer can be maintained. The diffusion of light on the outer surface can be promoted, and the improvement of transmission clarity and suppression of glare can be expressed in a balanced manner. Functional layers such as a low refractive index layer and a polarizing layer can be formed on the antiglare hard coat layer, and an antireflection function and a polarizing function can be exhibited.

Next, each component of the antiglare film will be described in order.
As the transparent support, a transparent resin film, a transparent resin sheet, a transparent glass plate or the like is used, and is not particularly limited. Specific examples of the resin material forming the transparent support include poly (meth) acrylic resins, poly (meth) acrylonitrile resins, polystyrene resins, polysulfone resins, polyethersulfone resins, and polyether resins. , Polymethylpentene resin, triacetate cellulose (TAC) resin, polyethylene terephthalate (PET) resin, polyurethane resin, regenerated cellulose resin, diacetyl cellulose resin, acetate butyrate cellulose resin, polyester resin, acrylonitrile Styrene-butadiene terpolymer resin, polycarbonate resin, polyether ketone resin, polyvinyl chloride resin, polyvinylidene chloride resin, polyvinyl alcohol resin, polyethylene resin, polypropylene resin, (Nylon) resin, polyimide resin, and norbornene resin. Among these, poly (meth) acrylic resins, polystyrene resins, triacetate cellulose (TAC) resins, polyethylene terephthalate (PET) resins, and polycarbonate resins are preferable from the viewpoints of versatility and application results. When providing a polarizing layer as a functional layer, triacetate cellulose (TAC) resin is usually used.

  The thickness of the transparent support is usually 10 to 5000 μm, preferably 25 to 1000 μm, more preferably 35 to 500 μm. When this thickness is thinner than 10 μm, workability is deteriorated and the strength of the transparent support tends to be lowered. On the other hand, if the thickness is greater than 5000 μm, the thickness becomes unnecessarily thick and the handleability deteriorates, which is not preferable.

Next, the antiglare hard coat layer will be described.
The antiglare hard coat layer has irregularities on its surface, and light is reflected and diffused on the irregularities (surface diffusibility), and has a function capable of exhibiting antiglare properties. Such an antiglare hard coat layer is formed by curing an antiglare hard coat layer forming composition containing translucent fine particles in a binder containing an active energy ray-curable resin and a photopolymerization initiator. In the binder of the composition for forming an antiglare hard coat layer, inorganic fine particles having an average particle diameter smaller than that of the translucent fine particles are used for adjusting the refractive index of the cured binder and adjusting the antiglare property. It is preferable to contain. Furthermore, a diluting solvent is usually blended in the binder or the antiglare hard coat layer forming composition.

  The active energy ray-curable resin requires a polymerizable component as a constituent component, and may contain other components as necessary. Examples of such polymerizable components include monofunctional monomers, polyfunctional monomers, oligomers having vinyl groups and (meth) acryloyl groups, and polymers having vinyl groups and (meth) acryloyl groups. Or 2 or more types are selected and used. Other components include photodegradable or thermal decomposable polymerization initiators, oligomers that do not contain vinyl groups or (meth) acryloyl groups (hereinafter referred to as non-polymerizable oligomers), vinyl groups or (meth) acryloyl groups. Polymers (hereinafter referred to as non-polymerizable polymers), metal oxides, surfactants, diluent solvents, photosensitizers, stabilizers, ultraviolet absorbers, infrared absorbers, antioxidants and the like are used.

  Specific examples of the monofunctional monomer include methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, t-butyl (meth) acrylate, Isobutyl (meth) acrylate, n-hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isodecyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, (meth) acrylic Cetyl acid, isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, tricyclodecyl (meth) acrylate, benzyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, dicyclopentenyl (meth) acrylate Oxyethyl, (meth) acrylic acid dicyclopentanyl, (meth) acrylic acid Tamethylpiperidyl, (meth) acrylic acid ethyl hexahydrophthalate, (meth) acrylic acid 2-hydroxypropyl ethyl phthalate, (meth) acrylic acid 2-hydroxybutyl, (meth) acrylic acid butoxyethyl, (meth) acrylic (Meth) acrylic acid esters such as phenoxyethyl acid, methoxydiethylene glycol (meth) acrylate, methoxytriethylene glycol (meth) acrylate, methoxypolyethylene glycol (meth) acrylate, styrene, α-methylstyrene, p-methoxy Styrene, m-methoxystyrene, di-t-butyl fumarate, di-n-butyl fumarate, diethyl fumarate, monomethyl itaconate, dimethyl itaconate, monoethyl itaconate, diethyl itaconate, N-isopropylacrylamide, N -Vinyl-2-pyrrolidone and the like are preferable.

  Examples of the polyfunctional monomer include esterified products of polyhydric alcohol and (meth) acrylic acid, polyfunctional polymerizable compounds containing two or more (meth) acryloyl groups such as urethane-modified acrylate, and the like. Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol, polypropylene glycol, propanediol, butanediol, pentanediol, Divalent alcohols such as hexanediol, neopentyl glycol, 2-ethyl-1,3-hexanediol, 2,2′-thiodiethanol, 1,4-cyclohexanedimethanol; trimethylolpropane, glycerol, pentaerythritol, di Examples thereof include trivalent or higher alcohols such as glycerol, dipentaerythritol, and ditrimethylolpropane.

  The urethane-modified acrylate can be obtained by a urethanization reaction between an organic isocyanate having a plurality of isocyanate groups in one molecule and a (meth) acrylic acid derivative having a hydroxyl group. Examples of organic isocyanates having a plurality of isocyanate groups in one molecule include two isocyanates in one molecule such as hexamethylene diisocyanate, isophorone diisocyanate, tolylene diisocyanate, naphthalene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, and dicyclohexylmethane diisocyanate. Organic isocyanate having a group, organic isocyanate having three isocyanate groups in one molecule obtained by subjecting these organic isocyanates to isocyanurate modification, adduct modification, biuret modification, and the like.

  Among them, di (meth) acrylic acid hexanediol, di (meth) acrylic acid neopentyl glycol, di (meth) acrylic acid diethylene glycol, di (meth) acrylate from the viewpoint of improving the strength of the cured product (coating film) and availability. (Meth) acrylic acid tripropylene glycol, tri (meth) acrylic acid trimethylolpropane, tri (meth) acrylic acid pentaerythritol, (meth) acrylic acid esters such as hexa (meth) acrylic acid dipentaerythritol, hexamethylene diisocyanate And an adduct of 2-hydroxyethyl (meth) acrylate, an adduct of isophorone diisocyanate and 2-hydroxyethyl (meth) acrylate, an adduct of tolylene diisocyanate and 2-hydroxyethyl (meth) acrylate, Adduct-modified isophorone diiso Aneto and (meth) adducts of adduct and biuret modified isophorone diisocyanate and 2-hydroxyethyl (meth) acrylate and 2-hydroxyethyl acrylate is preferable.

  The light-transmitting fine particles are for exhibiting a light diffusion function in the antiglare hard coat layer, an antiglare function by forming irregularities on the surface, and the like. Examples of the light-transmitting fine particles include inorganic fine particles and resin fine particles (plastic beads). However, resin fine particles are preferable from the viewpoint of easy adjustment of the refractive index difference from the transparency and the antiglare hard coat layer. As the material for forming such resin fine particles, vinyl chloride resin, (meth) acrylic resin (refractive index 1.49), polystyrene resin (refractive index 1.54), melamine resin (refractive index 1.57), polyethylene Resins, polycarbonate resins, acrylic-styrene copolymer resins and the like can be mentioned. These resins include cross-linked resins. In the acrylic-styrene copolymer resin, the refractive index can be arbitrarily adjusted by changing the copolymerization ratio of both monomers.

  The translucent fine particles are preferably monodispersed with a uniform particle diameter in order to uniformly scatter or diffuse light in the antiglare hard coat layer and on the surface thereof. The average particle diameter of the light-transmitting fine particles is preferably 0.1 to 20 μm, more preferably 0.5 to 10 μm, and particularly preferably 1 to 10 μm in order to sufficiently exhibit its function. When this average particle diameter is less than 0.1 μm, the antiglare property on the surface of the antiglare hard coat layer tends to be insufficient. On the other hand, when it exceeds 20 μm, the haze value of the antiglare hard coat layer becomes too high, and the transparency tends to be impaired.

  The ratio of the average particle diameter of the translucent fine particles to the thickness of the antiglare hard coat layer is preferably 10 to 100%. When this ratio is less than 10%, the amount of translucent fine particles to be added to form desired irregularities on the surface of the antiglare hard coat layer increases, and the haze value rises so that the transmission clarity is deteriorated. Tend to. On the other hand, when it exceeds 100%, the unevenness on the surface of the antiglare hard coat layer becomes too large, so that the haze value becomes large, the transmission clearness deteriorates, and the glare becomes strong, which is not preferable.

  The content of the translucent fine particles is usually 1 to 70 parts by mass, preferably 2 to 60 parts by mass, more preferably 3 to 50 parts by mass, and most preferably 30 to 30 parts by mass with respect to 100 parts by mass of the active energy ray-curable resin. 40 parts by mass. When the content of the light-transmitting fine particles is less than 1 part by mass, the function of the light-transmitting fine particles cannot be sufficiently exhibited, and satisfactory antiglare properties cannot be obtained. On the other hand, when the amount is more than 70 parts by mass, the haze value of the antiglare hard coat layer becomes too high, and when the antiglare film is placed on the display surface, image recognizability such as whitening is lowered.

  The photopolymerization initiator is used for initiating polymerization by irradiating an active energy ray-curable resin with active energy rays such as ultraviolet rays, and a known compound is used. Examples of such photopolymerization initiators include benzophenones, acetophenones, α-amyloxime esters, Michler benzoyl benzoate, tetramethylchuram monosulfide, and thioxanthones. Specifically, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropane- 1-one, 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1-propan-1-one, benzoin, 2,2-dimethoxy-1,2-diphenylethane-1 -One, benzophenone, [4- (methylphenylthio) phenyl] phenylmethanone, 4-hydroxybenzophenone, 4-phenylbenzophenone, 3,3 ', 4,4'-tetra (t-butylperoxycarbonyl) benzophenone, 2-chlorothioxanthone, 2,4-diethylthioxanthone, α-amyloxime ester, Michler Emissions benzoyl benzoate, tetramethylthiuram monosulfide, and the like.

  The content of the photopolymerization initiator is preferably 0.01 to 20 parts by mass and more preferably 1 to 10 parts by mass with respect to 100 parts by mass of the active energy ray-curable resin. When this content is less than 0.01 part by mass, the cured product (coating film) obtained from the antiglare hard coat layer forming composition is not completely cured and is not preferable because curing is insufficient. . On the other hand, if it exceeds 20 parts by mass, curing is sufficient, but no further effect can be expected, and the amount is unnecessarily large and wasted.

  The inorganic fine particles express the function of adjusting the refractive index of the cured product of the binder, and the function of adjusting the antiglare property by suppressing the sedimentation of the translucent fine particles or floating on the surface. Among inorganic fine particles, colloidally dispersed inorganic fine particles and inorganic oxide fine particles are particularly preferable. Examples of the material for forming the inorganic fine particles include silica, alumina, titania, zirconia, tin oxide, indium oxide, and antimony oxide. Colloidal silica is particularly preferable in consideration of the refractive index, price, and the like. The colloidal silica may be surface-modified if necessary. The average particle size of the inorganic fine particles is preferably 0.001 or more and less than 0.1 μm, and more preferably 0.01 to 0.1 μm. When this average particle diameter is smaller than 0.001 μm, the function of adjusting the refractive index of the cured product of the binder and the function of adjusting the antiglare property cannot be sufficiently exhibited. On the other hand, when the thickness is 0.1 μm or more, the haze value tends to increase, and a phenomenon such as whitening increases, which is not preferable.

Here, the refractive index of the active energy ray curable resin is generally about 1.5, which is about the same as that of glass, but the refractive index of the active energy ray curable resin is high in comparison with the refractive index of the translucent fine particles. In this case, it is preferable to use silica (SiO ₂ , refractive index 1.45) which is an inorganic fine particle having a low refractive index. Conversely, when the refractive index of the active energy ray-curable resin is low, titanium dioxide (TiO ₂ , refractive index 2.3 to 2.7), yttrium oxide (Y ₂ O ₃ ), which are inorganic fine particles having a high refractive index. Refractive index 1.87), lanthanum oxide (La ₂ O ₃ , refractive index 1.95), zirconium oxide (ZrO ₂ , refractive index 2.05), alumina (Al ₂ O ₃ , refractive index 1.63), etc. It is preferable to use it. In these cases, the inorganic fine particles are added to such an extent that the antiglare hard coat layer forming composition can form a film and an antiglare hard coat layer is obtained.

  The content of the inorganic fine particles is usually 50 to 150 parts by weight, preferably 60 to 130 parts by weight, more preferably 70 to 120 parts by weight, and most preferably 80 to 100 parts by weight with respect to 100 parts by weight of the active energy ray-curable resin. Part. When this content is less than 50 parts by mass, the antiglare hard coat layer cannot obtain sufficient antiglare properties. On the other hand, when the amount exceeds 150 parts by mass, the haze value of the antiglare hard coat layer becomes too high, and when the antiglare film is placed on the display surface, image recognizability such as whitening is deteriorated.

  The diluting solvent used for the preparation of the antiglare hard coat layer forming composition or binder is mainly used for coating the antiglare hard coat layer forming composition on the transparent support. It is used for adjusting the viscosity of the composition for forming a coat layer and is not particularly limited as long as it is non-polymerizable. Diluent solvents such as toluene, xylene, ethyl acetate, propyl acetate, butyl acetate, methyl cellosolve, ethyl cellosolve, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, methyl alcohol, ethyl alcohol, isopropyl alcohol, butyl alcohol, dialkyl Examples include acetone alcohol, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, hexane, heptane, octane, decane, dodecane, propylene glycol monomethyl ether, and 3-methoxybutanol.

  After the above antiglare hard coat layer forming composition is applied on a transparent support, it is cured by irradiating active energy rays to prevent the antiglare hard coat layer from being laminated on the transparent support. A dazzling film is obtained. As a method for applying the antiglare hard coat layer forming composition on the transparent support, a roll coating method, a spin coating method, a dip coating method, a brush coating method, a spray coating method, a bar coating method, a knife coating method, Any known method such as a die coating method, a gravure coating method, a curtain flow coating method, a reverse coating method, a kiss coating method, or a comma coating method may be employed. At the time of application, in order to improve adhesion, pretreatment such as corona discharge treatment can be applied to the surface of the transparent support in advance.

As an active energy ray source used for irradiation of active energy rays, for example, a high pressure mercury lamp, a halogen lamp, a xenon lamp, a nitrogen laser, an electron beam accelerator, a radioactive element or the like is used. It is preferable that the irradiation amount of an active energy ray is 50-5000 mJ / cm < ² > as an integrated light quantity in ultraviolet wavelength 365nm. When the irradiation amount is less than 50 mJ / cm ² , curing of the composition for forming an antiglare hard coat layer becomes insufficient, which is not preferable. On the other hand, when it exceeds 5000 mJ / cm ² , the active energy ray-curable resin tends to be colored, which is not preferable.

  The low refractive index layer has a refractive index lower than that of the antiglare hard coat layer and exhibits an antireflection function on the surface thereof. As a material for forming the low refractive index layer, for example, a resin material such as an ultraviolet curable acrylic resin, a hybrid material in which inorganic fine particles such as colloidal silica are dispersed in the resin, tetraethoxysilane, titanium tetraethoxide, etc. Examples thereof include sol-gel materials using metal alkoxides such as metal alkoxides. In particular, it is known that a compound having a fluorine atom exhibits a low refractive index. Specifically, a polymerizable monomer having a fluoroalkyl group in the side chain, for example, a (meth) acrylic acid-containing fluorine-containing alkyl ester is polymerized. And a polymer obtained by polymerizing fluoroalkylstyrene. Furthermore, as a method for efficiently reducing the refractive index, a method in which hollow silica fine particles are blended with a compound containing a fluorine atom as a binder may be mentioned.

  The thickness of the low refractive index layer is not particularly limited, but is preferably ¼ (about 100 nm) of the visible light wavelength because surface reflection is reduced by the interference effect and the transmittance is improved. Further, from the viewpoint of obtaining a suitable antireflection effect, the low refractive index layer preferably has a low refractive index, but if it is too low, the reflected light is colored, which is not preferable. Therefore, in consideration of antireflection and coloring prevention, the refractive index of the low refractive index layer is preferably 1.30 to 1.50, and particularly when the antireflection effect is emphasized, More preferably, it is 1.30 to 1.45.

  In the antiglare film thus obtained, in order for the antiglare hard coat layer to exhibit light diffusibility, it is necessary to adjust the uneven shape on the surface of the antiglare hard coat layer. That is, regarding the uneven shape on the surface of the antiglare hard coat layer, the arithmetic average roughness (Ra) defined in JIS B 0601-1994 on the surface of the antiglare hard coat layer is 0.01 to 0.30 μm, and 0 It is preferably 0.01 to 0.20 μm, and most preferably 0.05 to 0.15 μm. Similarly, the ten-point average roughness (Rz) specified in JIS B 0601-1994 is preferably 2.0 μm or less, more preferably 0.1 to 1.5 μm, and more preferably 0.5 to 1.3 μm. Most preferably. By setting the Ra and Rz of the uneven surface of the antiglare hard coat layer to such a range, the glare is not found when the antiglare film is arranged on the display for image display, and the display is good. It is possible to ensure high visibility.

  When Ra is less than 0.01 μm, the light diffusibility on the surface of the antiglare hard coat layer is insufficient, and the antiglare property deteriorates. On the other hand, when Ra exceeds 0.30 μm, the haze value of the antiglare hard coat layer is increased, whitening occurs, and transmission clarity is deteriorated. Furthermore, when Rz exceeds 2.0 μm, the haze value of the antiglare hard coat layer tends to increase, and the transmission clarity decreases.

  Moreover, the average interval (Sm) of the unevenness | corrugation prescribed | regulated to JISB0601-1994 in the anti-glare hard-coat layer surface needs to be 10-300 micrometers, It is preferable that it is 30-200 micrometers, 100-180 micrometers It is particularly preferred that If this Sm is in the range of 10 to 300 μm, glare is suppressed when an antiglare film is placed on a display for image display, and good visibility of the display can be ensured. Sm represents the interval between the irregularities in the direction along the surface of the antiglare hard coat layer, and this interval is important for suppressing glare particularly on the surface of the antiglare hard coat layer. When Sm is less than 10 μm, the expression of light diffusibility on the surface of the antiglare hard coat layer is insufficient, and glare cannot be suppressed. On the other hand, when Sm exceeds 300 μm, the haze value of the antiglare hard coat layer is increased to cause a whitening phenomenon and the desired transmission clearness cannot be obtained.

About the relationship between said arithmetic mean roughness (Ra) and the average space | interval (Sm) of an unevenness | corrugation, it is preferable that ratio of Sm / Ra is 1000-1300. That is, the interval of the unevenness is about 10 ³ times the height of the irregularity, carefully first diffusion of light irregularity is formed in such a shape, it is possible to suppress the glare. When the ratio of Sm / Ra is smaller than 1000, the interval between the projections and depressions with respect to the height of the projections and depressions is narrowed, the haze value is likely to be increased, and the transmission sharpness is deteriorated. On the other hand, when the ratio of Sm / Ra is larger than 1300, the interval of the unevenness with respect to the unevenness height becomes too wide, and the light diffusion tends to be insufficient.

  In addition, in the antiglare film, the refractive index difference between the cured binder and the translucent fine particles is 0 to 0.05, preferably 0 to 0.03, more preferably 0 in order to improve the transmission clarity. Set to ~ 0.01. By setting the refractive index difference between the cured binder and the light-transmitting fine particles in such a range, light scattering inside the anti-glare hard coat layer can be suppressed, and light transmittance is improved. Can be made. When this refractive index difference is larger than 0.05, light scattering inside the antiglare hard coat layer increases, and the transmission of light is hindered, resulting in poor transmission clarity.

  The antiglare hard coat layer preferably has an image definition value of 50% or more, more preferably 55, measured through an optical comb having a width of 2 mm using an image definition measuring device based on JIS K 7105-1981. %, And the value of the image sharpness measured by 60 ° reflection is preferably 60% or less, more preferably 55% or less. Note that the upper limit of these image definition values is 100%. In this case, the transmission clarity when viewed from the front and oblique directions can be improved. When the value of the image definition is less than 50%, when the anti-glare film is disposed on the display surface, the definition of the display image is lowered, which is not preferable. Moreover, when the value of the image definition measured by 60 ° reflection exceeds 60%, the anti-glare property is deteriorated when the anti-glare film is arranged on the display surface and the display image is viewed.

  A haze value is applied as an index of antiglare property. The haze value (haze value, haze) is measured in accordance with JIS K 7136, and is a value obtained by dividing the scattered light transmittance by the total light transmittance in percentage. The haze value is preferably 1 to 50%, more preferably 1 to 30%, particularly preferably 1.5 to 10%, and most preferably 1.5 to 5%. . When the haze value is less than 1%, the antiglare effect is insufficient, and it is difficult to prevent the reflection of an image when the antiglare film is disposed on the display surface. On the other hand, when it is larger than 50%, the display image becomes white when the contrast is lowered or the antiglare film is arranged on the display surface.

  The haze value is due to external haze caused by external scattering due to irregularities on the surface of the antiglare hard coat layer, and the difference in refractive index between the light-transmitting fine particles present inside the antiglare hard coat layer and the antiglare hard coat layer. Can be classified as internal haze due to internal scattering. Since the anti-glare film aims to suppress the transmission clarity and glare while maintaining the anti-glare property, adjustment of the external haze and the internal haze is important. Since the antiglare property is mainly caused by the external haze, the surface unevenness needs to be increased to some extent in order to exhibit the antiglare property. On the other hand, since the transmission clearness and the glare are correlated with the external haze and the internal haze, it is necessary to keep both low.

  Moreover, it is preferable that the visibility reflectance which shows reflection of an anti-glare film is 5% or less, and it is more preferable that it is 3.5% or less. This visibility reflectance is obtained, for example, by measuring the reflectance (%) using a spectrophotometer equipped with an integrating sphere reflectance measuring device. When a low refractive index layer is provided on the antiglare hard coat layer, the visibility reflectance can be sufficiently suppressed.

  In addition, the 60 ° gloss value representing the surface gloss is preferably 100% or less, more preferably 90% or less, and most preferably 10 to 80%. Here, the 60 ° gloss value is a value obtained by measuring in accordance with JIS K7105, measuring the specular reflection component with a light receiver by applying light from a standard light source to the sample at a specified angle. The reference surface is the glass surface, and its value is 100%. If this gloss value exceeds 100%, the antiglare film has insufficient antiglare properties, and the effect of preventing the reflection of an image when the antiglare film is placed on the display surface is insufficient.

  Next, a display is comprised by providing the anti-glare film mentioned above in the outermost surface of the side which displays the image of a display. This display is provided with an anti-glare film, so that image reflection can be suppressed and visibility can be improved. Furthermore, since the unevenness of the surface of the antiglare hard coat layer is set to a small range as described above with respect to the display pixel size, there is no lens-like effect and the image visibility is excellent. Specifically, the display displays images on personal computers, word processors, televisions, mobile phones, mobile terminals, game machines, automatic cash withdrawals, cash dispensers, vending machines, navigation devices, security system terminals, etc. Members (CRT, plasma display, liquid crystal display, electroluminescence display, field emission display, projection display, toner-based display used for electronic paper, etc.) and the like. Examples of the display include glass cases such as show cases and show windows used for display for display, plastic cases, and the like.

The actions and effects exhibited by the above embodiment will be described collectively below.
-In the anti-glare film in this embodiment, the refractive index difference of the hardened | cured material of a binder and translucent microparticles | fine-particles is restrained in the small range of 0-0.05. That is, the difference in light refraction between the cured binder and the translucent fine particles is reduced. Therefore, the light transmittance within the antiglare hard coat layer can be increased. In addition, Ra is suppressed to a small range of 0.01 to 0.30 μm and Sm of 10 to 300 μm with respect to minute irregularities on the surface of the antiglare hard coat layer. That is, the unevenness on the surface of the antiglare hard coat layer is set to be small in terms of height and interval. Therefore, it is possible to achieve light diffusion while maintaining light transmittance on the surface of the antiglare hard coat layer. Therefore, the antiglare film can exhibit a good balance between suppression of glare and improvement of transmission clarity (image clarity).

  -By containing inorganic fine particles having an average particle diameter smaller than that of the light-transmitting fine particles in the binder, the inorganic fine particles have better dispersibility than the light-transmitting fine particles, so that sedimentation of the light-transmitting fine particles is suppressed. It is possible to promote the formation of irregularities on the surface of the antiglare hard coat layer by floating the light-sensitive fine particles on the surface. In addition, the refractive index of the antiglare hard coat layer can be adjusted by selecting inorganic fine particles having a desired refractive index from inorganic fine particles having different refractive indexes.

  ・ About anti-glare film, by setting the value of image definition to 50% or more, when the anti-glare film is placed on the outermost surface of the display, it is possible to improve the transmission clarity at the front, Visibility can be improved. In addition, by setting the value of image definition measured by 60 ° reflection to 60% or less, reflection can be suppressed when an antiglare film is disposed on the outermost surface of the display, resulting in antiglare properties. Can be improved.

  ・ By providing a low refractive index layer having a refractive index lower than the refractive index of the antiglare hard coat layer on the antiglare hard coat layer, the reflection on the surface of the antiglare hard coat layer is suppressed, and the front It is possible to effectively suppress the reflection of the image located at.

  The display is configured by providing the antiglare film on the outermost surface on the display side. This display has the effect of the antiglare film and can suppress glare due to interference with display pixels, and has excellent transmission clarity.

Hereinafter, the embodiment will be described more specifically with reference to production examples, examples and comparative examples, but the present invention is not limited to the scope of these examples.
The surface roughness, haze value, image sharpness value, glare and luminous reflectance in each example were measured by the methods described below.
(1) Surface Roughness Co., Ltd., manufactured by Kosaka Laboratories Co., Ltd., Surface Roughness Measuring Machine Using a surf coder SE500, conforming to JIS B 0601-1994, with a scanning range of 4 mm and a scanning speed of 0.2 mm / s. Then, the arithmetic average roughness Ra (μm), the average interval Sm (μm) of the unevenness, and the ten-point average roughness Rz (μm) were measured.
(2) Haze value Using a haze meter [NDH2000, manufactured by Nippon Denshoku Industries Co., Ltd.], the haze value (%) as an optical property was measured.
(3) Value of image sharpness An image is measured through an optical comb having a width of 2 mm using an image sharpness measuring device based on JIS K 7105-1981 (image clarity measuring device manufactured by Suga Test Instruments Co., Ltd., ICM-1T). The sharpness value (%) and the image sharpness value (%) measured at 60 ° reflection were measured.
(4) Glare An anti-glare film was placed on the surface of a high-definition display or high-definition touch panel, and the glare was measured visually and evaluated in the following three stages.

3: No glare, 2: Slight glare, 1: Glitter (5) Visibility reflectance In order to remove the back reflection of the measurement surface, the back surface was roughed with sandpaper, and an integrating sphere reflectance measurement device was attached. The reflectance (%) was measured using a spectrophotometer [manufactured by JASCO Corporation, trade name: U-best 50], and the value was corrected by the visibility.
(Production Example 1, Preparation of Modified Hollow Silica Sol as Inorganic Fine Particles)
A modified hollow silica sol was prepared according to the following first to fifth steps.

As the first step, a silica sol having an average particle diameter of 5 nm of silica (SiO ₂ ) having a concentration of 20% by mass and pure water were mixed to prepare a reaction mother liquor and heated to 80 ° C. The pH of this reaction mother liquor is 10.5, and 1.17% by mass sodium silicate aqueous solution as SiO ₂ and 0.83% by mass sodium aluminate aqueous solution as alumina (Al ₂ O ₃ ) are added to the reaction mother liquor. Added simultaneously. Meanwhile, the temperature of the reaction mother liquor was kept at 80 ° C. The pH of the reaction mother liquor rose to 12.5 immediately after the addition of sodium silicate and sodium aluminate and remained almost unchanged thereafter. After completion of the addition, the reaction mother liquor was cooled to room temperature and filtered through an ultrafiltration membrane to prepare a SiO ₂ .Al ₂ O ₃ primary particle dispersion (core particle dispersion) having a solid content concentration of 20% by mass.

Next, as a second step, pure water is added to the SiO ₂ .Al ₂ O ₃ primary particle dispersion and heated to 98 ° C., and an aqueous sodium sulfate solution having a concentration of 0.5 mass% is maintained while maintaining this temperature. Added. Subsequently, an aqueous solution of sodium silicate having a concentration of 1.17% by mass as SiO ₂ and an aqueous solution of sodium aluminate having a concentration of 0.5% by mass as Al ₂ O ₃ were added, and a composite oxide fine particle dispersion (the core particles were first mixed). 1) A fine particle dispersion having a silica coating layer was obtained. And this was filtered with the ultrafiltration membrane, and it was set as the complex oxide fine particle dispersion liquid of solid content concentration 13 mass%.

  As a third step, pure water was added to this composite oxide fine particle dispersion, and concentrated hydrochloric acid (35.5% by mass) was added dropwise to adjust the pH to 1.0, followed by dealumination. Subsequently, while adding 10 L of hydrochloric acid aqueous solution of pH 3 and 5 L of pure water, the aluminum salt was separated with an ultrafiltration membrane to obtain an aqueous dispersion of silica-based fine particles (1) having a solid content concentration of 20% by mass.

As the fourth step, a mixture of the aqueous dispersion of the silica-based fine particles (1), pure water, ethanol and 28% by mass ammonia water is heated to 35 ° C., and then ethyl silicate (SiO ₂ 28% by mass). Was added to form a silica coating (second silica coating layer). Subsequently, while adding 5 L of pure water, it was filtered through an ultrafiltration membrane to prepare a dispersion of silica-based fine particles (2) having a solid content concentration of 20% by mass.

Finally, as a fifth step, the dispersion of silica-based fine particles (2) was again subjected to hydrothermal treatment at 200 ° C. for 11 hours. Then, it filtered with the ultrafiltration membrane, adding pure water 5L, and adjusted solid content concentration to 20 mass%. Then, using an ultrafiltration membrane, the dispersion medium of this dispersion was replaced with ethanol to obtain an organosol having a solid content concentration of 20% by mass. This organosol was an organosol (hollow silica sol A) in which hollow silica fine particles having an average particle diameter of 60 nm and a specific surface area of 110 m ² / g were dispersed.

200 g of the hollow silica sol A (silica solid content concentration: 20% by mass) was prepared, and the solvent was replaced with methanol in an ultrafiltration membrane. 100 g of organosol having a SiO ₂ content of 20% by mass (water content was SiO ₂ content) 0.5 mass%) was prepared. Thereto, a 28% by mass aqueous ammonia solution was added to 100 g of the organosol so as to be 100 ppm as ammonia, and mixed well. Further, γ-acryloyloxypropyltrimethoxysilane [trade name: KBM5103, manufactured by Shin-Etsu Chemical Co., Ltd. 3.6 g was added to obtain a reaction solution. This was heated to 50 ° C. and heated at 50 ° C. for 6 hours with stirring. After completion of the heating, the reaction solution was cooled to room temperature, and further the solvent was replaced with isopropyl alcohol by a rotary evaporator to obtain an organosol composed of coated hollow fine particles having a SiO ₂ concentration of 20% by mass. This organosol has an average particle size of 60 nm, a refractive index of 1.25, a porosity of 40 to 45%, a specific surface area of 130 m ² / g, and a mass reduction ratio by thermal mass measurement (TG) of 3.6%. It was an organosol in which hollow silica fine particles were dispersed.
(Production Example 2, Preparation of Composition for Low Refractive Index Layer)
50 parts by mass, 1,10-diaacryloyloxy-2,2,3,3,4,4,5,5,6 in terms of solid content of the organosol in which the modified hollow silica fine particles obtained in Production Example 1 were dispersed. , 6,7,7,8,8,9,9-hexadecafluorodecane (fluorine content 53 mass%) [manufactured by Kyoeisha Chemical Co., Ltd., trade name “16-FDA”] 50 parts by mass, photopolymerization started 5 parts by mass of an agent [manufactured by Ciba Specialty Chemicals Co., Ltd., Irgacure 907] and 2000 parts by mass of isopropyl alcohol were mixed to obtain a composition for a low refractive index layer (fluorine-containing curable coating liquid).
Example 1
50 parts by mass of dipentaerythritol hexaacrylate [manufactured by Nippon Kayaku Co., Ltd., KAYARAD DPHA], colloidal silica [manufactured by Nissan Chemical Co., Ltd., XBA-ST, 30 mass% solution of xylene and butanol mixed solvent] As a photopolymerization initiator, 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1-propan-1-one [manufactured by Ciba Specialty Chemicals Co., Ltd., Irgacure (Irg. 2959] 3 parts by mass and 83.4 parts by mass of methyl isobutyl ketone (MIBK) were mixed to prepare a binder, and fine particles of cross-linked acrylic resin as translucent fine particles [MX-500, manufactured by Soken Chemical Co., Ltd.] A set for forming an antiglare hard coat layer by mixing 17 parts by mass of monodispersed fine particles having a uniform particle diameter, average particle diameter of 5 μm) The composition was prepared.

This antiglare hard coat layer forming composition was applied as a transparent support on a polyethylene terephthalate (PET) film having a thickness of 100 μm with a roll coater so as to have a dry film thickness of 5 μm, and at 80 ° C. for 2 minutes. Dried. Thereafter, ultraviolet rays were irradiated with a 120 W high-pressure mercury lamp (manufactured by Nippon Battery Co., Ltd.) (integrated light amount 400 mJ / cm ² ) and cured to produce an antiglare film. The refractive index of the cured product obtained by curing the binder was 1.50, and the refractive index of the translucent fine particles was 1.49. Therefore, the difference in refractive index between the cured binder and the light-transmitting fine particles was 0.01. The arithmetic average roughness (Ra) on the surface of the antiglare hard coat layer was 0.14 μm, the average interval (Sm) of irregularities was 150 μm, and the haze value of the antiglare film was 2.9%.
(Example 2)
Example 1 except that trimethylolpropane triacrylate [manufactured by Kyoeisha Chemical Co., Ltd., light acrylate TMP-A] is used instead of dipentaerythritol hexaacrylate of the composition for forming an antiglare hard coat layer in Example 1. An antiglare film was prepared in the same manner as in Example 1. The refractive index of the cured product of the binder in the obtained antiglare film was 1.50, and the refractive index of the translucent fine particles was 1.49. Therefore, the difference in refractive index between the cured binder and the light-transmitting fine particles was 0.01. Further, the arithmetic average roughness (Ra) on the surface of the antiglare hard coat layer was 0.15 μm, the average interval (Sm) of irregularities was 160 μm, and the haze value of the antiglare film was 3.2%.
(Example 3)
Instead of dipentaerythritol hexaacrylate of the composition for forming an antiglare hard coat layer in Example 1, urethane acrylate (manufactured by Dainippon Ink & Chemicals, Inc., GRANDIC PC6-6150F, containing a photopolymerization initiator) was used. Except not using colloidal silica, it operate | moved similarly to Example 1 and it apply | coated so that the dry film thickness might be set to 5 micrometers using a roll coater on a triace ethyl cellulose (TAC) film, and prepared the anti-glare film. . The refractive index of the cured product of the binder in the obtained antiglare film was 1.500, and the refractive index of the translucent fine particles was 1.498. Therefore, the difference in refractive index between the cured binder and the translucent fine particles was 0.002. The arithmetic average roughness (Ra) on the surface of the antiglare hard coat layer was 0.10 μm, the average interval (Sm) of irregularities was 130 μm, and the haze value of the antiglare film was 1.8%.
Example 4
After applying the low refractive index layer composition produced in Production Example 2 to the surface of the antiglare hard coat layer in the antiglare film of Example 1 so that the thickness upon drying is 0.1 μm. The composition for low refractive index layer was cured by irradiating with 400 mJ ultraviolet light using an ultraviolet irradiation device (made by Eye Graphics, 120W high pressure mercury lamp) in a nitrogen atmosphere to form a low refractive index layer. The refractive index of this low refractive index layer was 1.30.
(Comparative Example 1)
(Anti-glare hard coat layer forming composition)
100 parts by mass of dipentaerythritol hexaacrylate [manufactured by Nippon Kayaku Co., Ltd., KAYARAD DPHA], 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1- as a photopolymerization initiator Propane-1-one [Ciba Specialty Chemicals Co., Ltd., Irgacure 2959] 3 parts by mass and methyl isobutyl ketone (MIBK) 83.4 parts by mass were mixed to prepare a light-transmitting material. 17 parts by mass of crosslinked styrene fine particles (manufactured by Soken Chemicals Co., Ltd., SX-500; average particle size 5 μm) were mixed as a fine particle to prepare a composition for forming an antiglare hard coat layer.

This anti-glare hard coat layer forming composition was applied on a PET film having a thickness of 100 μm as a transparent support by a roll coater so as to have a dry film thickness of 5 μm, and dried at 80 ° C. for 2 minutes. Thereafter, ultraviolet rays were irradiated with a 120 W high-pressure mercury lamp (manufactured by Nippon Battery Co., Ltd.) (integrated light amount 400 mJ / cm ² ) and cured to obtain an antiglare film. The refractive index of the cured product of the binder in this antiglare film was 1.51, and the refractive index of the translucent fine particles was 1.60. Therefore, the difference in refractive index between the cured binder and the light-transmitting fine particles was 0.09. The arithmetic average roughness (Ra) on the surface of the antiglare hard coat layer was 0.20 μm, the average interval (Sm) of unevenness was 200 μm, and the haze value of the antiglare film was 30.0%.

  About the anti-glare film of Examples 1-4 and Comparative Example 1, the refractive index difference between the cured product of the binder and the translucent fine particles, the thickness of the anti-glare hard coat layer, the arithmetic average roughness Ra, the average of the unevenness Table 1 collectively shows the distance Sm, the ten-point average roughness Rz, the glare, the image sharpness value, the image sharpness value measured by 60 ° reflection, the haze value, and the visibility reflectance.

表１に示したように、実施例１〜４においては、バインダーの硬化物と透光性微粒子との屈折率差が０．００２〜０．０１であり、かつ防眩性ハードコート層の表面における算術平均粗さ（Ｒａ）が０．１０〜０．１５μｍ及び凹凸の平均間隔（Ｓｍ）が１３０〜１６０μｍであった。そのため、実施例１〜４の防眩性フィルムは、ぎらつきの評価でぎらつきが見られず、像鮮明度の値を５５〜６５％に維持することができ、双方の特性をバランス良く発揮することができた。さらに、ヘイズ値を１．８〜３．２％に抑えることができると共に、視感度反射率を１．０〜３．１％に抑制することができた。加えて、６０°反射で測定される像鮮明度の値を２４〜３２％に維持でき、反射を抑えることができて防眩性にも優れていた。

As shown in Table 1, in Examples 1 to 4, the refractive index difference between the cured binder and the translucent fine particles is 0.002 to 0.01, and the surface of the antiglare hard coat layer The arithmetic average roughness (Ra) was 0.10 to 0.15 μm, and the average interval (Sm) of irregularities was 130 to 160 μm. Therefore, the anti-glare films of Examples 1 to 4 show no glare in the evaluation of glare, can maintain the value of image definition at 55 to 65%, and exhibit both characteristics in a well-balanced manner. I was able to. Further, the haze value can be suppressed to 1.8 to 3.2%, and the visibility reflectance can be suppressed to 1.0 to 3.1%. In addition, the value of image definition measured by 60 ° reflection can be maintained at 24-32%, reflection can be suppressed, and the antiglare property is excellent.

  On the other hand, in Comparative Example 1, the difference in refractive index between the cured binder and the translucent fine particles was outside the scope of the present invention. For this reason, glare was observed in the evaluation of glare, and the value of image sharpness decreased to 20%, which was an inappropriate result as an antiglare film.

It should be noted that the present embodiment can be implemented with the following modifications.
-As surface roughness of an anti-glare hard-coat layer, ranges, such as the maximum height (Ry) measured based on JISB0601-1994, can also be prescribed | regulated.

-It is also possible to provide an antiglare hard coat layer on both sides of the transparent support.
-An ultraviolet absorber, an infrared absorber, etc. can also be mix | blended with a transparent support body, a low refractive index layer, etc.

A low refractive index layer can be provided on the surface of the antiglare hard coat layer via a high refractive index layer, a middle refractive index layer, or the like.
Furthermore, the technical idea grasped from the embodiment will be described below.

  The ten-point average roughness (Rz) measured according to JIS B 0601-1994 on the surface of the antiglare hard coat layer is from 0.1 to 1.5 μm. The anti-glare film according to claim 4. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-4, the glare in the glare-proof hard-coat layer surface can be suppressed further.

  The antiglare film according to any one of claims 1 to 4, wherein a refractive index difference between the cured product of the binder and the light-transmitting fine particles is 0 to 0.01. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-4, a transmission clearness can be improved further.

  The arithmetic average roughness (Ra) measured in accordance with JIS B 0601-1994 on the surface of the antiglare hard coat layer is from 0.05 to 0.15 μm. Item 5. The antiglare film according to any one of Items 4 above. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-4, a glare can be further suppressed when an anti-glare film is arrange | positioned on the display for an image display. .

  In any one of Claims 1-4, the average space | interval (Sm) of the unevenness | corrugation prescribed | regulated to JIS B 0601-1994 in the said glare-proof hard-coat layer surface is 100-180 micrometers. The antiglare film as described. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-4, a glare can be further suppressed when installing an anti-glare film on the display for an image display. The visibility of the image can be improved.

  The ratio (Sm / Ra) of the average interval (Sm) of the unevenness to the arithmetic average roughness (Ra) is 1000 to 1300, according to any one of claims 1 to 4. Antiglare film. When comprised in this way, in addition to the effect of the invention which concerns on any one of Claims 1-4, when a glare-proof film is arrange | positioned on the display for an image display, it suppresses glare effectively. Can do.

Claims (5)

An antiglare hard coat layer obtained by curing an antiglare hard coat layer forming composition containing translucent fine particles in a binder containing an active energy ray-curable resin and a photopolymerization initiator is formed on a transparent support. An anti-glare film,
Arithmetic average roughness measured according to JIS B 0601-1994 on the surface of the antiglare hard coat layer, having a refractive index difference of 0 to 0.05 between the cured product of the binder and the translucent fine particles. An anti-glare film, wherein (Ra) is 0.01 to 0.30 μm and an average interval (Sm) of unevenness is 10 to 300 μm. 2. The antiglare film according to claim 1, wherein the binder contains inorganic fine particles having an average particle diameter smaller than that of the light transmissive fine particles. The value of image definition measured through an optical comb having a width of 2 mm using an image definition measuring device based on JIS K 7105-1981 is 50% or more, and the image definition measured at 60 ° reflection The value is 60% or less, and the antiglare film according to claim 1 or 2. The low-refractive index layer having a refractive index lower than the refractive index of the anti-glare hard coat layer is provided on the anti-glare hard coat layer. 2. An antiglare film according to item 1. A display comprising the antiglare film according to any one of claims 1 to 4 on an outermost surface on an image display side.