Method for producing color filter

Details Method for producing color filter Method for producing color filter

1994-12-09

1996-06-18

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

Screen other than for cathode-ray tube

430 20, 430321, G03F 900

Patent

active

055276482

ABSTRACT:
A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming on the photosensitive coating film a first region where a light irradiation amount is different in two steps; (c) developing a light-irradiated portion of the first region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (d) forming on the remaining photosensitive coating film a second region where a light irradiation amount is different in two steps; (e) developing a light-irradiated portion of the second region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (f) removing the remaining photosensitive coating film not developed in the steps (c) and (e); (g) forming a positive or negative photosensitive coating film on the transparent substrate; (h) forming on the photosensitive coating film formed in the step (g) a third region where a light irradiation amount is different in at least three steps; and (i) developing the third region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer, the operation of the developing and electrodepositing being sequentially repeated in the order of decreasing or increasing light irradiation amounts to thereby form different colored layers.

REFERENCES:
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patent: 5214542 (1993-05-01), Yamasita et al.
patent: 5314770 (1994-05-01), Yamasita et al.
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patent: 5385795 (1995-01-01), Yuasa et al.
patent: 5399449 (1995-03-01), Tanimoto et al.
patent: 5411836 (1995-05-01), Yoda et al.
patent: 5422207 (1995-06-01), Yoda
patent: 5427888 (1995-06-01), Yoda et al.

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