Method for producing color filter

Details Method for producing color filter Method for producing color filter

1992-04-22

1994-05-24

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, 430142, 430321, 430324, G03F 900

Patent

active

053147693

ABSTRACT:
A method for producing a color filter involves (A) forming a photosensitive coating film on a transparent electrically conductive layer formed on a surface of a transparent substrate and exposing the photosensitive coating film through a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film region registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the transparent electrically conductive layer and electrodepositing a colored coating on the exposed transparent electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film and electrodepositing the colored coating being repeated for the respective patterns of different degrees of light transmittances in sequence of difference in light transmittances to form different colored layers, respectively; and (C) selectively forming a metal layer on at least one exposed region of the transparent electrically conductive layer.

REFERENCES:
patent: 4846556 (1989-07-01), Haneda
patent: 5214541 (1993-05-01), Yamasita et al.
patent: 5214542 (1993-05-01), Yamasita et al.
Hackh's Chemical Dictionary, 4th edition (1972), p. 473, right column, definition of "onuim".
Flagello, et al. "A Single Expose Double Develop (SEDD) Process for Self-aligned Lithographic Applications", (Sep. 1989), Microelectronic Engineering, 8226, Nos. 1-4, pp. 47-52.

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