Toppan Printing Co., Ltd.

Toyo Ink Mfg. Co., Ltd.

Nippon Kayaku Kabushiki Kaisha

Satoshi Ohkuma

Takeshi Itoi

Takashi Yamauchi

Koichi Minato

Hidesato Hagiwara

Hideyo Tanaka

Noriko Asahi

Masayuki Yamamoto

Akira Hirano

Kazunori Yamada

Mie Shimizu

Yoshiki Akatani

Yutaka Ishii

Yusuke Iida

Takaaki Kurata

Sosuke Akao

Yasuyuki Demachi

Yoshiko Ishimaru

Yukino Miyagawa

Kenji Muneuchi

Atsuko Kamada

Takashi Kanoh

Yoshinori Nagasaki

Mitsuhisa Hatashima

A liquid crystal display device which includes a backlight device provided with an LED, and a color filter having colored layers of plural colors including a green layer, wherein the green layer of the color filter contains brominated zinc phthalocyanine green pigment and a dielectric loss tangent of the green layer at a driving frequency of a liquid crystal display device is confined to not more than 0.02.

Liquid crystal display device and color filter for liquid crystal display device

A color filter includes a red filter segment, a green filter segment and a blue filter segment, on a substrate, wherein when a pseudo-white LED is used, an area of a triangle defined by three chromaticity points of the red, green and blue filter segments expressed as (x, y), (x, y) and (x, y) on the x-y chromaticity diagram occupies 72% or more of an area standard triangle defined by defined by 3 points of red (0.67, 0.33), green (0.21, 0.71) and blue (0.14, 0.08), and the color filter has a color temperature of 6000K or more. Each of the red, green and blue filter segments has a thickness of 3.3 &#x3bc;m or less. A liquid crystal display device includes such color filter and the pseudo-white LED.

Color filter and liquid crystal display device

Disclosed is a dye-containing blue color composition for color filter, including a triarylmethane-based dye having a structure represented by the following formula (1): wherein R, R, R, R, Rand Reach independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, a phenyl group which may have a substituent or a benzyl group which may have a substituent, R, R, R, R, R, R, R, R, R, R, R, R, Rand Reach independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent or a halogen atom and X represents a tristrifluoromethanesulfonylmethide anion.

Blue color composition containing dye, color filter and liquid crystal display device and organic EL display provided with the color filter

A color filter comprising a substrate, a red pixel, green pixel and blue pixel, each being disposed on the substrate, wherein a perpendicular optical retardation Rof the red pixel, a perpendicular optical retardation Gof the green pixel, and a perpendicular optical retardation Bof the blue pixel satisfy the following formulas (1) and (2):|()|&#x2212;|()|&#x2267;0&#x2003;&#x2003;(1)|()|&#x2212;|()|&#x2267;0&#x2003;&#x2003;(2)wherein R, Gand Brepresent, respectively, a product of a thickness [nm] of a pixel and a value obtained by subtracting a value of thickness-wise refractive index from an average value of an in-plane refractive index of each of these pixels.

Color filter with perpendicular optical retardation and liquid crystal display device

A red-colored film in which when an elliptically polarized light is incident on the film in a direction 45&#xb0; aslant from a normal line direction with respect to a surface of the film, a light transmitted through the film has an average amplitude transmittance ratio (av. tan &#x3a8;) in a wavelength region of 575 to 635 nm, which satisfies the following equation (1):0.960&#x3c;av. tan &#x3a8;&#x3c;1.040&#x2003;&#x2003;(1).A red-colored composition contains a red pigment A having a BET specific surface area in the range from 90 to 140 m/g, a red pigment B having a BET specific surface area in the range from 70 to 85 m/g, and a pigment carrier formed of a transparent resin, a precursor of the transparent resin or a mixture of the tarns parent resin and precursor thereof. A color filter has the red-colored film as a red color filter segment. The liquid crystal display device includes the color filter.

Red colored film, red colored composition, color filter and liquid crystal display device

Growing community of inventors

Tokyo, Japan

Satoshi Ohkuma