Fujifilm Corporation

Tetsuya Asakura

Takato Suzuki

Katsumi Inoue

Jun Watanabe

Daiki Wakizaka

Hiroyuki Yoneyama

Masaaki Suzuki

Ryuji Saneto

Shinya Kato

Hideyasu Ishibashi

Shuntaro Ibuki

Naohiro Matsunaga

Tokuju Oikawa

Shoji Yasuda

Satoshi Kuniyasu

Masafumi Yoshida

Isao Ikuhara

Yoshiki Sugai

The method for producing an optical film includes a step of preparing a first coating liquid containing a certain amount of light-transmitting particles, a resin, and a solvent, a second coating liquid containing an amount less than the certain amount of light-transmitting particles, a resin, and a solvent, or not containing the light-transmitting particles but containing a resin and a solvent; a step of coating the second coating liquid and the first coating liquid in this order from the support side on a traveling band-shaped support in the form of a multilayer to form a second coating film and a first coating film; a step of transferring the light-transmitting particles in the first coating film to the side of the second coating film while drying the first coating film and the second coating film.

Method for producing optical film

An antireflection film includes, in a following order, a transparent substrate film; a medium refractive index layer; a high refractive index layer; and a low refractive index layer, wherein the medium refractive index layer is (A) a medium refractive index layer having a refractive index of 1.60 to 1.64 at a wavelength of 550 nm and a thickness of 55.0 to 65.0 nm, the high refractive index layer is (B) a high refractive index layer having a refractive index of 1.70 to 1.74 at a wavelength of 550 nm and a thickness of 105.0 to 115.0 nm, and the low refractive index layer is (C) a low refractive index layer having a refractive index of 1.32 to 1.37 at a wavelength of 550 nm and a thickness of 85.0 to 95.0 nm.

Antireflection film, polarizing plate and image display device

A method for producing an optical film is provided and includes: simultaneously coating at least two coating solutions over a transparent support, the at least two coating solutions each containing a solvent and a solute; and drying the solvent in each of the at least two coating solutions to provide at least two coating layers. When the at least two coating layers are, . . . n&#x2212;1 and n layers in sequence from the outermost surface of the at least two coating layers toward the transparent support, n being an integer of 2 or more, the main component of the solute in the n-th layer is insoluble or sparingly soluble in the main component of the solvent in the (n&#x2212;1)-th layer.

Production method of optical film, optical film and image display

Provided is an antireflection film including, in the following order: a transparent support; at least one antiglare layer or diffusive layer containing a transparent resin and light-transmissive resin particles; and a low-refractivity layer having a refractive index lower than that of any of the transparent support and the antiglare layer or diffusive layer, wherein the transparent resin is formed by curing a mixture containing (A) a polyfunctional (meth)acrylate having at least two (meth)acryloyl groups, and (B) a modified polyfunctional (meth)acrylate modified through addition of any of ethylene oxide, propylene oxide or caprolactone, and the light-transmissive resin particles contain (C) high-crosslinking light-transmissive particles which are so high-crosslinking as to have a residual monomer content of at most 2.0% and which have a compression strength of from 39 to 98 N/mm.

An optical film, is provided, the optical film including: a support; and at least one antiglare layer having a surface that has asperities, wherein the at least one antiglare layer contains at least one kind of light transmitting particles including first light transmitting particles in an amount of 0.01 to 1 mass % based on a total solid content in the antiglare layer, the first light transmitting particles have an average particle size that is 0.1 to 4.0 &#x3bc;m greater than an average thickness of the antiglare layer, and a region &#x3b8;(0.5) in which slope angles &#x3b8; of the asperities of the surface of the antiglare layer lie within a range of 0&#xb0;&#x3c;&#x3b8;&#x3c;0.5&#xb0; constitutes 40% to 98% of the surface of the antiglare layer.

Optical film, polarizing plate and image display apparatus

Provided is an optical film including a transparent support; and an antiglare layer that comprises a light-transmitting resin and at least two kinds of light-transmitting particles, wherein the antiglare layer has a thickness of from 10 &#x3bc;m to 15 &#x3bc;m, each kind of the at least two kinds of light transmitting particles has an average particle size of from 7 &#x3bc;m to 15 &#x3bc;m, each kind of the at least two kinds of light transmitting particles has a refractive index different from a refractive index of the light-transmitting resin by from 0.001 to 0.050 in absolute value, and a total amount of the at least two kinds of light-transmitting particles are from 15 to 40 mass % based on all solid contents in the antiglare layer.

Optical film, polarizing plate, and image display

An antiglare film is provided, the antiglare film including: a support; and an antiglare layer including a surface that has asperities, wherein the antiglare layer contains at least first light-transmitting particles and second light-transmitting particles, the first light-transmitting particles have an average particle size that is 0.01 to 2.5 &#x3bc;m greater than an average thickness of the antiglare layer, the second light-transmitting particles have an average particle size that is at least 0.1 &#x3bc;m smaller than the average thickness of the antiglare layer, the first light-transmitting particles are contained in an amount of 0.1 to 2 mass % based on a total solid content in the antiglare layer, the second light-transmitting particles are contained in an amount of 2 to 30 mass % based on the total solid content in the antiglare layer, and the second light-transmitting particles include organic polymer-containing particles each of which has a core particle/shell layer structure.

Antiglare film, antireflective film, polarizing plate and image display device

An antiglare film is provided and includes: a transparent support; and an antiglare layer containing a binder and a light-transmitting fine particle. The light-transmitting fine particle has an average particle diameter of 3 to 15 &#x3bc;m, the antiglare layer has an average thickness smaller than the average particle diameter of the light-transmitting fine particle by 0.1 to 2.0 &#x3bc;m, the antiglare layer contains the light-transmitting fine particle in an amount of 1.0 to 3.0 weight % based on all solid contents of the antiglare layer. The antiglare layer has a surface having a &#x3b8;(1) of 60 to 98.5%, wherein the &#x3b8;(1) is a ratio of a surface region of 0&#xb0;&#x2266;&#x3b8;&#x2266;1&#xb0; in the surface when &#x3b8; represents a tilt angle of an irregularity on the surface.

Antiglare film, antireflection film, polarizing plate and image display device

An antiglare film is provided, the antiglare film including: a transparent support; and an antiglare layer, wherein the antiglare layer contains a light-transmitting resin particle, a light-transmitting resin and a copolymerization product having an amine value of 1 to 30 mgKOH/g, and the average particle diameter of the light-transmitting resin particle is from 6 to 20 &#x3bc;m.

An optical film includes a filmy support that includes a polymer having all alicyclic structure; an ultraviolet absorbing layer; and a hardcoat layer, wherein the ultraviolet absorbing layer has a beam transmittance of 5% or less in a wavelength region of 200 to 340 nm and includes at least one ultraviolet absorbent selected from the group consisting of a metal oxide fine particle and a polymer particle.

Optical film, and polarizing plate and liquid crystal display device using the optical film

Provided is a transparent support including a light-transmitting particle having an average particle diameter of 6 to 20 &#x3bc;m, wherein the transparent support has a thickness of from 20 to 200 &#x3bc;m, the light-transmitting particle is contained in a ratio of 0.5 to 20 mass % based on entire solid content in the transparent support, and the transparent support has an arithmetic average roughness (Ra) of 0.05 &#x3bc;m or less.

Transparent support, optical film, polarizing plate and image display device

An oil-in-water type emulsion coating composition having an aqueous phase and an oil phase, the oil-in-water type emulsion coating composition containing: an active energy ray-curable polyfunctional (meth)acrylate having three or more (meth)acryloyl groups within a molecule; and an organic solvent, in the oil phase, the organic solvent having a solubility of 30 g or less in 100 g of water and having a property capable of swelling or dissolving a substrate.

Oil-in-water (O/W) emulsion coating compositing, laminate, polarizing plate, image display device and production method of the laminate

An antiglare film includes: a transparent support; and an antiglare layer containing a light-transmitting particle and a light-transmitting resin, wherein the light-transmitting particle has a structure including a core particle and a shell layer, each of the core particle and the shell layer contains an organic polymer, the shell layer has a thickness of from 10 to 2,000 nm, the core particle has a refractive index of from 1.54 to 1.65, and the shell layer has a refractive index of from 1.46 to 1.53.

An antiglare film includes a transparent support; and an antiglare layer containing a binder and a fine particle, wherein the antiglare layer has an average thickness smaller than an average particle diameter of the fine particle, and the antiglare layer has a surface roughness skewness (Rsk) of from 0.5 to 1.5.

Antiglare film, polarizing plate and image display device

An optical film is provided and includes: a transparent support; and a light diffusion layer containing light-transmitting particles and a binder. The light diffusion layer has an average thickness of from 7.5 to 30 &#x3bc;m, and the average thickness of the light diffusion layer is from 1.4 to 3.5 times as large as an average particle diameter of the light-transmitting particles.

Growing community of inventors

Minami-ashigara, Japan

Tetsuya Asakura