Toppan Printing Co., Ltd.

Toyo Ink Mfg. Co., Ltd.

Hideyo Tanaka

Takeshi Itoi

Koichi Minato

Hidesato Hagiwara

Yusuke Iida

Satoshi Ohkuma

Takumi Saito

Takeshi Ikeda

Masayuki Yamamoto

Akira Hirano

Kazunori Yamada

Kohei Matsui

Mie Shimizu

Genki Harada

Mizuhiro Tani

Kenro Sunahara

Yukino Miyagawa

Eishi Aoki

Isao Shigemori

Morihide Miyamura

Toshio Waku

Takashi Kanoh

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

A method of manufacturing a color filter, includes forming a colored coated film on a substrate using a colored composition containing a pigment, a monomer having an ethylenic unsaturated double bond and photo-polymerization initiator, irradiating a filter segment-forming region or a black matrix-forming region of the colored coated film with an excimer laser beam having a wavelength of 308 nm (XeCL) at a dosage sufficient to achieve a cumulative light exposure of 1-150 mJ/cm, thereby curing the irradiated region, removing uncured portions of the colored coated film to form the filter segment or the black matrix, and repeating the above-described steps plural times, thereby forming filter segments of at least two colors and/or a black matrix.

Colored composition, color filter and manufacturing method thereof

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

A color filter is provided with red, green and blue color filter segments. When chromaticity coordinates (x, y) in a chromaticity diagram of XYZ color specification system are measured with the color filter being sandwiched between two polarizers, a chromaticity (x, y) of parallel-transmitted light and a chromaticity (x, y) of orthogonal-transmitted light satisfy the following formula (1):&#x394;=[()+()]&#x3c;0.130&#x2003;&#x2003;(1)A liquid crystal display device is provided with such a color filter.

Color filter and liquid crystal display device provided with the same

A colored composition contains a colorant carrier including a transparent resin, a precursor thereof, or a mixture of the transparent resin and the precursor, a colorant, and an organic liquid medium. The organic liquid medium consists of an organic solvent (a) having a boiling point at 760 mmHg of 100&#xb0; C. or higher but lower than 160&#xb0; C., and an organic solvent (b) having a boiling point at 760 mmHg of 160&#xb0; C. or higher but lower than 215&#xb0; C. The organic solvent (b) is contained in an amount of 3% to 35% by weight based on the total amount of the colored composition.

Colored composition, method of manufacturing color filter, and method of manufacturing black matrix substrate

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Tokyo, Japan

Hideyo Tanaka