Method for producing color filter

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United States of America Patent

PATENT NO 5372902
SERIAL NO

08125487

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for producing a color filter involves (A) forming a photosensitive coating film on a transparent electrically conductive layer of a transparent substrate having the transparent electrically conductive layer on its surface, and exposing the photosensitive coating film to light in a first irradiation amount through a mask having a predetermined pattern of a certain light transmittance and at least once displacing the mask to another position on the photosensitive coating film and exposing the photosensitive coating film to light in a second irradiation amount different from the first irradiation amount through the mask; and (B) developing and removing a photosensitive coating film portion exposed to light in one of the smallest and largest irradiation amounts for exposing the transparent electrically conductive layer and electrodepositing a colored coating on the exposed electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film and electrodepositing the colored coating being sequentially repeated for the respective irradiation amounts where the sequence of repetition is selected from increasing irradiation amount and decreasing irradiation amount to form different colored layers, respectively.

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Patent Owner(s)

Patent OwnerAddress
NIPPON MITSUBSHI OIL CORPORATIONNO 3-12 NISHI-SHIMBASHI 1-CHOME MINATO-KU TOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakamura, Toru Yokohama, JP 239 3997
Otsuki, Yutaka Yokohama, JP 43 385
Sato, Haruyoshi Kawasaki, JP 32 213
Yamashita, Yukio Yokohama, JP 44 317
Yuasa, Hitoshi Yokohama, JP 42 379

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