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Patent Searching and Data


Title:
COLOR FILTER AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPH09292514
Kind Code:
A
Abstract:

To obtain a color filter in which an electric field can be effectively and stably applied into a liquid crystal by specifying the specific inductive capacity of color films, and to provide a liquid crystal display device having the filter.

This color filter has pixels consisting of color films 3 of desired colors formed into a desired pattern for each color. Color films 3 are formed on a transparent substrate and a light-shielding region 2 is formed between pixels. The color film 3 has a function to transmit light of a desired color and its specific conductive capacity is controlled to ≤4.5, preferably ≤3.6. The specific conductive capacity is measured at 20°C for 100Hz to 100kHz frequency. The color film 3 is a polyimide or acryl film having dispersion of a pigment or dye, a dyed polyvinylalcohol film, a SiO2 film with controlled film thickness to transmit only desired light, etc., and a polymide film with dispersion of a pigment is preferable.


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Inventors:
TSUDA TAKAHARU
YAMADA SHINICHI
GOTO TETSUYA
Application Number:
JP10742496A
Publication Date:
November 11, 1997
Filing Date:
April 26, 1996
Export Citation:
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Assignee:
TORAY INDUSTRIES
International Classes:
G02B5/00; C09D179/08; G02B5/20; G02F1/1333; G02F1/1335; G02F1/136; G02F1/1368; (IPC1-7): G02B5/20; C09D179/08; G02B5/00; G02F1/1333; G02F1/1335; G02F1/136