Toppan Printing Co., Ltd.

Jsr Corporation

Yusuke Tochigi

Kae Takahashi

Takahiro Morinaga

Tomo Yoshinari

Hisamitsu Kameshima

Takashi Nishihara

Kae Tochigi

Takashi Kato

Hideaki Homma

Yasushi Yabuhara

Shigetomo Sakakibara

Norihiro Mizoshita

Hideaki Honma

Tetsu Kitamura

Kazuhiro Yabuuchi

The present invention provides an anti-glare film which has not only &#x3c;1&#x3e; sufficient anti-reflection property but also &#x3c;2&#x3e; a high level of contrast and &#x3c;3&#x3e; strong anti-glare properties and can be applied on a surface of various display devices such as a note PC, a desktop PC and a TV monitor. The anti-glare film of the present invention includes an anti-glare layer which has concavities and convexities on the surface, a haze according to JIS-7105-1981 in the range of 1.0-5.0%, and an average interval between concavities and convexities on the anti-glare layer surface Sm according to JIS-B0601-1994 in the range of 10-150 &#x3bc;m.

Anti-glare film with concave-convex structure

The present invention provides an anti-glare film which has &#x3c;1&#x3e; sufficient anti-reflection properties, &#x3c;2&#x3e; a high level of contrast and &#x3c;3&#x3e; strong antifouling properties. A surface of an anti-glare layer of the anti-glare film of the present invention has a concave-convex structure, an arithmetic mean roughness (Ra) according to JIS B0601-1994 in the range of 0.02-0.2 &#x3bc;m when a cut-off wavelength (&#x3bb;c) is 0.8 mm, and a surface free energy in the range of 15-25 mN/m. In addition, a haze of the anti-glare layer of the anti-glare film of the present invention is in the range of 1.0-5.0%.

Anti-glare film, polarizing plate and transmission type LCD

An antiglare film includes a transparent substrate, and an antiglare layer formed on the transparent substrate. The antiglare layer includes a binder matrix and acrylic-styrene copolymer particles, and the binder matrix includes an acrylic material having a hydroxyl group. A quotient R/H, which is obtained by dividing the average diameter Rof the acrylic-styrene copolymer particles by the average thickness H of the antiglare layer, is within a range of 0.30 to 0.80. A product in |n&#x2212;n|&#xd7;w&#xd7;H, which is the product of: the absolute value |n&#x2212;n| obtained by subtracting the average refractive index nof the binder matrix from the refractive index nof the acrylic-styrene copolymer particles; the content wof the acrylic-styrene copolymer particles when the content wof the binder matrix in the antiglare layer is 100 parts by weight; and the average thickness H of the antiglare layer, is within a range of 0.70 to 3.00.

Antiglare film, manufacturing method thereof, and transmissive liquid crystal display

The invention provides an antiglare film that has a low haze value, can maintain antireflection ability, and has inhibited reflection of external light, and also provides a manufacturing method thereof, and a transmission type liquid crystal display. The antiglare film includes a transparent substrate and an antiglare layer, wherein the antiglare layer is formed on the transparent substrate, has a concave-convex structure on the opposite surface of the antiglare layer from the transparent substrate, and includes a binder matrix and particles, the integrated reflectance of the antiglare layer at a wavelength of 550 nm is less than or equal to 4%, and a haze value of the antiglare layer is in the range of 3-15%.

Antiglare film, manufacturing method thereof and transmission type LCD

A bulk diffuser including: a base material; and a diffusion layer which has a forming material and inner diffusion particles dispersed in the forming material, and is formed on the base material, wherein the inner diffusion particles include two or more types of spherical particles having different refraction indexes, and variations of cross-sectional area of scattering per unit volume of the bulk diffuser owing to a variation of a refraction index of the forming material are mutually cancelled by a combination of the inner diffusion particles.

Bulk diffuser, and polarizing plate and liquid crystal display apparatus comprising the same

An embodiment of the present invention is an antiglare film which includes an antiglare layer having particles A, particles B, and a binder matrix on a transparent substrate. A difference in refractive index between the particles A and the binder matrix (|n&#x2212;n|) is 0.060 or less. A difference in refractive index between the particles B and the binder matrix (|n&#x2212;n|) is in the 0.080-0.300 range. An average diameter (unit: &#x3bc;m) of the particles B (r) is in the 0.5-5.0 &#x3bc;m range. The product value |n&#x2212;n|wH, which is obtained by multiplying a difference in refractive index between said particles B and said binder matrix (|n&#x2212;n|) by a content (part by weight) of said particles B as against 100 parts by weight of said binder matrix (w) and an average thickness (unit: &#x3bc;m) of said antiglare layer (H) is in the 10.0-15.0 range.

Antiglare film

This invention provides an antiglare film which has high antiglare property and show little white-blurring. An embodiment of the present invention is an antiglare film having a binder matrix and particles on a transparent substrate. The binder matrix is an acrylic material. The particles are made of a copolymer of styrene and methyl methacrylate. The copolymerization ratio by weight of the styrene and methyl methacrylate is in the styrene:methacrylic acid=60:40 to 80:20 range. In addition, a quotient R/H, which is obtained by dividing an average diameter of the particles (R) by the average thickness of the antiglare layer (H), is in the 0.45-0.65 range. Moreover, a quotient w/w, which is obtained by dividing a content of the particles in the antiglare layer (w) by a content of the binder matrix in the antiglare layer (w) is in the 0.08-0/164.

This invention provides an antiglare film of a type with a low content of particles that makes it possible to increase contrast, the antiglare film demonstrating appropriate antiglare property, small white blurring, and a low level of glittering, and also a method for manufacturing the film and a transmission type liquid crystal display. In the antiglare film, a content ratio of the particles in the binder matrix is within a range of 0.5-5 wt. %, a refractive index difference |n&#x2212;n| is equal to or greater than 0.010, R/R is in the range of 0.7-0.9, R/R is in the range of 1.10-1.30, and R/H is in the range of 0.70-1.50.

Antiglare film, manufacturing method thereof and transmission type liquid crystal display

An antiglare film includes an antiglare layer having particles and a binder matrix on a transparent base material. An antiglare film surface on the antiglare layer side has a concave-convex structure with a ten-point average roughness (Rz) equal to or larger than 0.08 &#x3bc;m and equal to or smaller than 0.10 &#x3bc;m at a cutoff wavelength (&#x3bb;) of 0.008 mm, the antiglare film surface on the antiglare layer side has a concave-convex structure with a ten-point average roughness (Rz) equal to or larger than 1.90 &#x3bc;m and equal to or smaller than 2.50 &#x3bc;m at a cutoff wavelength (&#x3bb;) of 0.8 mm, and the antiglare film surface on the antiglare layer side has a concave-convex structure with an average spacing (S) between local peaks equal to or larger than 0.033 mm and equal to or smaller than 0.050 mm at a cutoff wavelength (&#x3bb;) of 0.8 mm.

An antiglare film satisfies both (1) high antiglare property in the front direction and (2) absence of white blurring. One embodiment of the invention is an antiglare film provided with an antiglare layer on a transparent substrate, wherein the antiglare layer has a rugged structure on the surface opposite to the transparent substrate; the 5&#xb0; reflectance of the antiglare film surface on the antiglare layer side is in a range of from 0.30% to 0.70%; the antiglare film surface on the antiglare layer side is provided with a rugged structure having arithmetic average roughness (Ra) in the range of from 0.020 &#x3bc;m to 0.040 &#x3bc;m when a cutoff wavelength (&#x3bb;) is 0.008 mm; and the antiglare film surface on the antiglare layer side is provided with a rugged structure having arithmetic average roughness (Ra) in the range of from 0.35 &#x3bc;m to 0.45 &#x3bc;m when a cutoff wavelength (&#x3bb;) is 0.8 mm.

Antiglare film and transmissive liquid crystal display

An antiglare film comprises a transparent substrate; and an antiglare layer on the transparent substrate, the layer including a binder matrix, organic particles A and organic particles B having an average particle diameter smaller than an average particle diameter of particles A, organic particles A and organic particles B dispersed in the binder matrix. An antiglare film having of the present invention can have the following features: good antiglare property; no white blur; high abrasion resistant property; less dazzling; and not whitened.

An optical device includes a plastic-based film and a diffusing layer. The diffusing layer includes inner scattering elements that selectively scatter visible light having a wavelength range, and has pencil hardness of more than 2H under a 500 g-load specified in ISO/DIS 15184. When the optical device is arranged at a front side of a liquid crystal display apparatus that displays color near 8 test colors specified in CIE 1974, as a test color, chrominance &#x394;u'v&#x2032; of less than 0.05 is obtained based on a chromaticity coordinate (u&#x2032;, v&#x2032;) of CIE1976UCS observed in the front surfaceAof the liquid crystal display apparatus and a chromaticity coordinate (u&#x2032;, v&#x2032;) observed at an observation angle of &#xb1;60 degrees in horizontal and vertical directions of a screen of the liquid crystal display apparatus when a direction perpendicular to the screen is assumed to be 0 degrees.

Optical device, polarizing plate, diffuser, diffusing film, polarizing film and liquid crystal image display apparatus

Disclosed herein are a gelling agent composed of a functional amino acid compound having a tetrathiafulvalenyl group, and a production method of a gelling agent, comprising reacting a tetrathiafulvalene derivative with an amino acid derivative in the presence of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride and 4-(N,N-dimethylamino)pyridine to obtain a functional amino acid compound having a tetrathiafulvalenyl group.

Gelling agent and production method thereof, liquid crystal composition and charge transfer complex

Disclosed herein are a gelling agent composed of an isoleucine derivative having a carbazolyl group, and a process for preparing a gelling agent, which comprises reacting an isoleucine derivative having a specific skeletal with a compound having a carbazolyl group in the presence of dichloromethane and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride to obtain an isoleucine derivative having a carbazolyl group.

Growing community of inventors

Tokyo, Japan

Yusuke Tochigi