Color filter manufacturing method, color filter manufactured by the method, and liquid crystal device employing the color filter

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United States of America Patent

PATENT NO 6399257
SERIAL NO

09518635

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Abstract

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A color filter manufacturing method comprises the steps of forming, on a substrate, a photosensitive layer that increases or develops hydrophilic property upon irradiation of light; exposing the photosensitive layer to light for patterning to form hydrophilic areas in which hydrophilic property is relatively high and non-hydrophilic areas in which hydrophilic property is lower than the hydrophilic areas; and applying a setting ink to the hydrophilic areas with an ink jet technique, thereby forming colored portions. A color filter includes at least a photosensitive layer formed on a substrate and having hydrophilic areas in which hydrophilic property is increased or developed upon irradiation of light, and colored portions formed on the hydrophilic areas of the photosensitive layer. A liquid crystal device is constructed by using the color filter. The color filter can be manufactured inexpensively with the reduced number of steps while satisfying requisite characteristics. Color mixing, color unevenness and uncolored dots are prevented and a highly reliable color filter is provided.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHATOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirose, Masashi Machida, JP 81 1127
Kashiwazaki, Akio Yokohama, JP 79 1864
Nakazawa, Koichiro Yokohama, JP 46 757
Shirota, Katsuhiro Kawasaki, JP 84 2434
Yamashita, Yoshihisa Kawasaki, JP 98 1269
Yokoyama, Mayumi Yokohama, JP 3 125

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