Abstract: A light diffusion film in which the angle of aperture of diffused light has been expanded effectively by forming, within the film, a predetermined columnar structure composed of pillar-shaped objects having a bent part and a region having a relatively low refractive index, and a method for manufacturing the light diffusion film are provided. Disclosed is a light diffusion film having a columnar structure in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in the film thickness direction in a region having a relatively low refractive index, and the plural pillar-shaped objects having a relatively high refractive index have a bent part in the middle of the pillar-shaped objects.

Abstract: A composition for light diffusion film in which the angle of aperture of diffused light in a light diffusion film obtainable therefrom can be expanded effectively, and a light diffusion film obtainable by the composition for light diffusion film are provided.

Abstract: Provided are a light diffusion film having a single-layered light diffusion layer, in which the uniformity of the intensity of diffused light in the light diffusion angle region can be increased, or the light diffusion angle region can be expanded effectively, by regulating the combination of the angles of inclination of pillar-shaped objects in plural columnar structure regions, and a method for manufacturing a light diffusion film. Disclosed is a light diffusion film having a single-layered light diffusion layer, the light diffusion film having a first columnar structure region and a second columnar structure region, in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in a region having a relatively low refractive index, sequentially from the lower part of the film along the film plane.

Abstract: Provided are a method for producing a light diffusion film, capable of easily regulating the combination of the inclination angles of plural plate-shaped regions in plural louver structure regions, and also capable of efficiently producing a light diffusion film having increased uniformity of the intensity of diffused light in the light diffusion angle region, and an effectively expanded light diffusion angle region; and a light diffusion film thus obtained.

Abstract: A laminated body includes: an antireflection film; and a protection film bonded onto the antireflection film. The adhesive layer is a layer with a material formed by cross-linking, with a cross-linking agent (B), and a (meth)acrylic acid ester copolymer. The (meth)acrylic acid ester copolymer (A) is a copolymer formed by polymerizing monomer components including, in relation to the total amount of the monomer components set at 100% by mass, 70 to 98% by mass of a (meth)acrylic acid alkyl ester monomer (a) including a noncyclic alkyl group containing 4 to 9 carbon atoms, 1.5 to 25% by mass of a (meth)acrylic acid ester monomer (b) containing an aliphatic ring, and 0.5 to 5% by mass of a (meth)acrylic-based monomer (c) containing a functional group exhibiting reactivity with the cross-linking agent (B). The area proportion of the components each having a molecular weight of 100,000 or less, is less than 3.0%.

Abstract: Provided is an anisotropic light diffusion film in which uniformity of the intensity of diffused light in the light diffusion angle region has been increased, and the light diffusion angle region has been effectively expanded. Disclosed is an anisotropic light diffusion film having a first louver structure region and a second louver structure region, in which plural plate-shaped regions having different refractive indices are alternately arranged in parallel along any one direction along the film plane, sequentially from the lower side along the film thickness direction, the anisotropic light diffusion film having an overlapping louver structure region in which the upper end of the first louver structure region and the lower end of the second louver structure region overlap each other.

Abstract: A film includes a cured resin layer (A) of a curable composition containing an active energy ray curable compound and a microparticle dispersed therein and a cured resin layer (B) of a curable composition containing an active energy ray curable compound and a microparticle dispersed therein laminated in order on at least one surface of a light-transmitting substrate film, wherein the total film thickness of layer (A) and layer (B) is 1 to 10 ?m, a microparticle (a) having an average particle size of 0.5 to 10 ?m is compounded in layer (A) in an amount of 0.5 to 60 parts by mass to 100 parts by mass of an active energy ray curable compound, and a microparticle (b) having an average particle size which is less than an average particle size of the microparticle (a) is compounded in layer (B).

Abstract: Provided is a pressure-sensitive adhesive composition for a plasma display in which a moire phenomenon can be prevented without disposing an anti-glare film and the like in order to decrease a thickness of an optical filter in a plasma display, improve a productivity of the optical filter and reduce a cost thereof and an adhesive sheet prepared by forming the same. The pressure-sensitive adhesive composition used for an optical filter of a plasma display comprises (A) a (meth)acrylic ester base copolymer having a cross-linkable functional group in a molecule, (B) a cross-linking agent and (C) an organic fine particle in which a difference in a refractive index from that of the above (meth)acrylic ester base copolymer is 0.03 or more and which has an average particle diameter of 1 to 15 ?m and an adhesive sheet prepared by forming the same.

Abstract: The present invention provides a which comprises a cured resin layer (A) of a curable composition containing an active energy ray curable compound and a microparticle dispersed therein and a cured resin layer (B) of a curable composition containing an active energy ray curable compound and a microparticle dispersed therein, and the layer (A) and the layer (B) being laminated in order on at least one surface of a light-transmitting substrate film, wherein a total film thickness of the layer (A) and the layer (B) is 1 to 10 ?m, a microparticle A having an average particle size of 0.5 to 10 ?m is compounded in the layer (A) in an amount of 0.5 to 60 parts by mass to 100 parts by mass of an active energy ray curable compound, and a microparticle B having an average particle size which is less than an average particle size of the microparticle A is compounded in the layer (B).

Abstract: The present invention provides a glare-proofing and light-transmitting hard coat film, which comprises a cured resin layer (A) of a curable composition containing an active energy ray curable compound and a microparticle dispersed therein and a cured resin layer (B) of a curable composition containing an active energy ray curable compound and a microparticle dispersed therein, and the layer (A) and the layer (B) being laminated in order on at least one surface of a light-transmitting substrate film, wherein a center line average roughness (Ra(B)) of a surface of the layer (B) after the layer (B) is laminated, is smaller by 1 ?m or more than a center line average roughness (Ra(A)) of a surface of the layer (A) before the layer (B) is laminated, and a haze value (Hz(B)) of a film after the layer (B) is laminated, is smaller by 1.5% or more than a haze value (Hz(A)) of a film after only the layer (A) is laminated and before the layer (B) is laminated.

Abstract: A hard coat film for optical applications which suppresses formation of defects on the surface derived from roughness of the surface of the substrate film, exhibits excellent scratch resistance and crack resistance and suppresses curling of the substrate film is provided. The film for optical applications comprises (A) a layer of a cured resin 2 which comprises 70% by weight or more of a cured resin derived from a difunctional urethane acrylate-based oligomer having a weight-average molecular weight of 3,000 or greater and has a thickness of 5 to 25 ?m and (B) a hard coat layer 3 which comprises a resin cured by irradiation with an ionizing radiation and has a thickness of 1 to 15 ?m, layers (A) and (B) being successively laminated on one face of a substrate film 1.

Abstract: A coating composition containing a solvent and a coating agent having an ionizing radiation-curable compound as a principal component thereof, wherein under the following condition for the concentration a (wt %) of the coating agent in the coating composition 0<a?60, the concentration a of the coating agent and the surface tension b (dyne/cm) of the coating composition satisfy the following relationship b?(?a/15)+26, is applied onto a surface of a protective film 11 and curing is carried out to form a hard coating layer 12. Even in the case that projections or foreign bodies are present on the surface of the protective film 11, the hard coating layer 12 can conceal these and hence can have high surface smoothness.

Abstract: Provided is an optical laminate for a plasma display in which a moire phenomenon can be prevented without disposing an anti-glare film and the like in order to decrease a thickness of an optical filter in a plasma display, improve a productivity of the optical filter and reduce a cost thereof. The optical laminate used for an optical filter of a plasma display comprises an electromagnetic-wave shielding film having a metal mesh and a contrast enhancing film, wherein a light diffusion pressure-sensitive adhesive layer containing organic fine particles is disposed on a surface of at least one of the electromagnetic-wave shielding film and the contrast enhancing film.

Abstract: Provided is a pressure-sensitive adhesive composition for a plasma display in which a moire phenomenon can be prevented without disposing an anti-glare film and the like in order to decrease a thickness of an optical filter in a plasma display, improve a productivity of the optical filter and reduce a cost thereof and an adhesive sheet prepared by forming the same. The pressure-sensitive adhesive composition used for an optical filter of a plasma display comprises (A) a (meth)acrylic ester base copolymer having a cross-linkable functional group in a molecule, (B) a cross-linking agent and (C) an organic fine particle in which a difference in a refractive index from that of the above (meth)acrylic ester base copolymer is 0.03 or more and which has an average particle diameter of 1 to 15 ?m and an adhesive sheet prepared by forming the same.

Abstract: A coating composition containing a solvent and a coating agent having an ionizing radiation-curable compound as a principal component thereof, wherein under the following condition for the concentration a (wt %) of the coating agent in the coating composition 0<a?60, the concentration a of the coating agent and the surface tension b (dyne/cm) of the coating composition satisfy the following relationship b?(?a/15)+26, is applied onto a surface of a protective film 11 and curing is carried out to form a hard coating layer 12. Even in the case that projections or foreign bodies are present on the surface of the protective film 11, the hard coating layer 12 can conceal these and hence can have high surface smoothness.

Abstract: One side of a substrate film 11 is coated with a coating composition containing (A) a reactive particle produced by chemically bonding an organic compound having at least one polymerizable unsaturated group in its molecule to an inorganic oxide particle, (B) a monomer or oligomer of an organic compound having at least two polymerizable unsaturated groups in its molecule, (C) an organic compound with a weight average molecular weight of at least 1500 and having at least one polymerizable unsaturated group in its molecule, and, if desired, (D) a siloxane compound having a dimethylsiloxane skeleton, and the coating composition is cured by irradiation with ionizing radiation to form a hard coat layer 12 with a thickness of 2 to 20 ?m. This provides a hard coat film having adequate surface hardness and suppressed warpage.

Abstract: A coating composition containing reactive particles (A) in which an organic compound having at least one polymerizable unsaturated group in a molecule thereof is chemically bonded to inorganic oxide particles, an organic compound monomer or oligomer (B) having a polyethylene oxide chain (content in molecule: not less than 50% and less than 100%) and at least two polymerizable unsaturated groups in a molecule thereof and not having an aromatic ring and an alkyl chain having seven or more carbon atoms, an organic compound monomer or oligomer (C) having at least two polymerizable unsaturated groups in a molecule thereof, being an organic compound monomer or oligomer other than the organic compound monomer or oligomer (B), and a siloxane compound (D) having a dialkyl siloxane backbone is applied onto one surface of a base material film 11, and cured by irradiating with ionizing radiation, so as to form a hard coat layer 12 of thickness from 0.1 to 20 ?m.

Abstract: The present invention provides a light transmitting hard coat film for use in touch panels, which comprises: (A) a light transmitting hard coat layer composed of a cured product of an ionizing-radiation-curable compound; (B) a high refractive index layer composed of a cured product of an ionizing-radiation-curable compound and containing antimony-doped tin oxide plus zirconium oxide and/or titanium oxide, as metal oxides, which has a refractive index in the range of 1.65 to 1.90 and a thickness of 30 to 160 nm; and (C) a low refractive index layer composed of a cured product of a siloxane-based curable compound which has a refractive index in the range of 1.40 to 1.55 and a thickness of 10 to 50 nm, all the layers being laminated on one side of a light transmitting base film in this order. The light transmitting hard coat film for use in touch panels has a high light transmittance and can produce transmitted light of blue color.

Abstract: A hard coat film comprising a substrate film and a hard coat layer disposed at least on one face of the substrate film, wherein the hard coat layer comprises 100 parts by weight of (A) a resin of an ionizing radiation curing type and 0.1 to 10 parts by weight of (B) a nonionic surfactant. The hard coat film is used for protection of surfaces such as the surface of touch panels and displays. Attachment of finger prints during input operations by fingers on the surfaces is suppressed and the attached finger prints can be easily wiped out. Scratch resistance and wear resistance of conventional hard coat films are retained.

Abstract: A hard coat film comprises a hard coat layer formed by coating at least one face of a substrate with a coating fluid and curing the obtained coating layer by irradiation with an ionizing radiation. The coating fluid comprises a component for forming a hard coat layer comprising (A) a compound which is formed by bonding an organic compound having a polymerizable unsaturated group to fine particles of silica, (B) an ester of (meth)acrylic acid having an alicyclic structure and (C) a compound having at least two polymerizable unsaturated groups and at least one aryl group in a molecule. The hard coat layer comprises 20 to 60% by weight of silica and has a refractive index of 1.53 or greater. The hard coat film exhibits excellent scratch resistance, little shrinking by curing and little shrinking and curling under high temperature and humidity and forms no optical interference fringes.