公开(公告)号：JPH11349840A

公开(公告)日：1999-12-21

申请号：JP32195698

申请日：1998-11-12

Applicant: TORAY INDUSTRIES

Inventor： AKAIWA TOSHIYUKI ,  AKAMATSU TAKAYOSHI ,  YAMASHITA TETSUO ,  EGUCHI MASUICHI

IPC: G02B5/20 ,  C09B67/10 ,  C09B67/14 ,  G02B5/22 ,  G02F1/1335

Abstract: PROBLEM TO BE SOLVED: To obtain a pigment which suppresses displaying failures of a liquid crystal display by controlling the chloride ion concentration to be extracted into water to be not more than a specific value. SOLUTION: Preferably for a dye of either red, blue, yellow, purple, orange, indigo, crimson or black, the chloride ion concentration to be extracted into water is not more than 100 ppm. Preferably for a green dye, the chloride ion concentration to be extracted into water is not more than 20 ppm. For a color paste containing at least a pigment, an organic solvent and a resin for a color filter of a liquid crystal display, it is important to control the concentration of chloride ion dissolved into the color paste to be not more than 20 ppm against the color paste. A concentration more than 20 ppm could be a cause of displaying nonuniformity of a liquid crystal displaying device. A color paste for a color filter is obtained by removing all or part of chloride ion from a pigment dispersion containing at least a pigment and an organic solvent using an ion-exchange method.

公开(公告)号：JP2003185830A

公开(公告)日：2003-07-03

申请号：JP2002223256

申请日：2002-07-31

Applicant: TORAY INDUSTRIES

Inventor： KUBOTA YASUO ,  YAMASHITA TETSUO ,  EGUCHI MASUICHI

IPC: G02B5/20 ,  G02F1/1335

Abstract: PROBLEM TO BE SOLVED: To provide a color filter having color brightness identical to that of printed matter and attaining an excellent display without any defect such as disconnection of ITO (indium tin oxide) lines and, to provide a liquid crystal display. SOLUTION: The color filter is characterized by having an area of a triangle formed by connecting chromaticity coordinates of respective red, green and blue colors in a chromaticity diagram of an XYZ colorimetric system measured by using a C light source to be 80% or more versus an NTSC (National Television System Committee) standard and further having 4 μm or less film thickness of respective pixels, and the liquid crystal display device utilizes the color filter. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003177410A

公开(公告)日：2003-06-27

申请号：JP2001379899

申请日：2001-12-13

Applicant: TORAY INDUSTRIES

Inventor： YAMASHITA TETSUO ,  SAKAMOTO HIROKI ,  MUTO KUNIHIRO

IPC: G02B5/00 ,  G02B5/20 ,  G02F1/1335 ,  G02F1/1339

Abstract: PROBLEM TO BE SOLVED: To obtain a color filter for a semitransmissive liquid crystal display device having a slight difference in color purity balance between a reflective mode and a transmissive mode and exhibiting excellent display characteristics. SOLUTION: The color filter for the liquid crystal display device is characterized by comprising a spacer part 1 composed of a transparent resin formed in a region 7 for reflection and further having pixels of at least one color, in which an area of the spacer part is smaller than an area of a reflection film 2. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003107239A

公开(公告)日：2003-04-09

申请号：JP2002181001

申请日：2002-06-21

Applicant: TORAY INDUSTRIES

Inventor： YAMASHITA TETSUO ,  HANEDA IKUMI ,  SASAKI HIROYUKI

IPC: G02B5/20 ,  G02F1/1335 ,  G02F1/13357

Abstract: PROBLEM TO BE SOLVED: To obtain a color filter for a translucent liquid crystal display device, which reduces the chromaticity difference between a reflection mode and a transmission mode, has superior color characteristics, and realizes bright reflection display, and the translucent liquid crystal display device at low costs. SOLUTION: The color filter for the liquid crystal display device includes an area for transmission and an area for reflection and is characterized in that a green pixel is composed of two or more kinds of coloring layers and the translucent liquid crystal display device is equipped with the color filter and a three-wavelength type white LED.

公开(公告)号：JP2001228322A

公开(公告)日：2001-08-24

申请号：JP2000364759

申请日：2000-11-30

Applicant: TORAY INDUSTRIES

Inventor： YAMASHITA TETSUO ,  TSUKAMOTO JUN

IPC: G02B5/20 ,  G02F1/1335 ,  G02F1/13357

Abstract: PROBLEM TO BE SOLVED: To provide a color filter and a liquid crystal display device capable of displaying colors with brightness equal to a CRT(cathode ray tube) television. SOLUTION: The color filter is characterized by containing blue pixels that a chromaticity coordinate (x, y), in the XYZ color system chromaticity diagram measured by using the illuminant C, satisfies respective inequalities 0.13

公开(公告)号：JP2000186225A

公开(公告)日：2000-07-04

申请号：JP36275898

申请日：1998-12-21

Applicant: TORAY INDUSTRIES

Inventor： AKAMATSU TAKAYOSHI ,  YAMASHITA TETSUO

IPC: G02B5/20 ,  C09B67/20

Abstract: PROBLEM TO BE SOLVED: To inhibit and prevent display disorders in liquid crystal displays by reducing the generation of impurities from color filters. SOLUTION: In a preparation process of a pigment for color filters, fuming sulfuric acid or sulfuric acid is used as a solvent for chlorination and/or bromination of a compound having a phthalocyanine skeleton, and the pigment is washed with an organic solvent. Here, dipole moment of the organic solvent is 2 debyes or larger. A color paste for color filters contains at least a pigment, an organic solvent and a resin, wherein the pigment is obtained through the above-mentioned preparation process.

公开(公告)号：JP2004004627A

公开(公告)日：2004-01-08

申请号：JP2003075084

申请日：2003-03-19

Applicant: TORAY INDUSTRIES

Inventor： TAKIGUCHI IKUMI ,  YAMASHITA TETSUO

IPC: G02B5/20 ,  G02F1/1335 ,  G02F1/13357

Abstract: PROBLEM TO BE SOLVED: To obtain a color filter for a liquid crystal display device which vividly reproduces the red color of a liquid crystal display using an LED light source as a light source. SOLUTION: In the color filter used in the liquid crystal display device in which an LED is set as the light source, the chromaticity coordinates (x, y) of a red pixel in an XYZ color specification system chromaticity diagram in a C light source satisfy 0.37≤x≤0.54, and 0.26≤y≤0.3. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2002365421A

公开(公告)日：2002-12-18

申请号：JP2001167812

申请日：2001-06-04

Applicant: TORAY INDUSTRIES

Inventor： SASAKI HIROYUKI ,  YAMASHITA TETSUO ,  KASAI SHIGETAKA

IPC: G02B5/20 ,  G02F1/1335 ,  G09F9/30 ,  G09F9/35

Abstract: PROBLEM TO BE SOLVED: To obtain a color filter for a semitransmissive liquid crystal display device with little difference of chromaticity between a reflective display and a transmissive display and being bright, with a simple method. SOLUTION: The color filter for the liquid crystal display device is a color filter containing a transmissive region and a reflective region and is characterized by having the transmissive region and the reflective region of a coloring layer with at least one color composed of the same color material, having the reflective region including a transparent region and forming two or more kinds of coloring layers corresponding to the transmissive region and the reflective region in the coloring layer of at least one color except a color included in the transparent region.

公开(公告)号：JP2002348493A

公开(公告)日：2002-12-04

申请号：JP2002066505

申请日：2002-03-12

Applicant: TORAY INDUSTRIES

Inventor： NOMURA HIDESHI ,  YAMASHITA TETSUO ,  TSUKAMOTO JUN

IPC: G03F7/004 ,  C09B67/20 ,  C09D17/00 ,  G02B5/20 ,  G02F1/1335

Abstract: PROBLEM TO BE SOLVED: To provide a reflective or semi-transmissive reflective liquid crystal display panel that is bright and excellent in visibility, by manufacturing a color filter having a superior surface flatness which enables high transmission and color purity to be made compatible under environmental lights and then by using this color filter and utilizing environmental lights. SOLUTION: The red color paste contains at least a quinacridone pigment, a sulfonated derivative of the quinacridone pigment, and a resin component. The color filter manufactured by using this color paste and the liquid crystal display panel are provided.

公开(公告)号：JP2002296580A

公开(公告)日：2002-10-09

申请号：JP2001095158

申请日：2001-03-29

Applicant: TORAY INDUSTRIES

Inventor： YAMASHITA TETSUO ,  TSUKAMOTO JUN

IPC: G02B5/20 ,  C08K5/00 ,  C08L79/08 ,  C08L101/00 ,  G02B5/22 ,  G02F1/1335

Abstract: PROBLEM TO BE SOLVED: To obtain a green pixel for a reflection type liquid crystal display device having high light transmittance. SOLUTION: The color filter characteristically consists of the green pixel containing a coloring agent having >=460 nm and