Color filter with a porous activated film layer having dyes fixe

Optical: systems and elements – Absorption filter

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Details

359891, 359 67, 359 68, 252584, 427164, 430511, 430517, G02B 520, G02B 522

Patent

active

053051548

ABSTRACT:
A color filter in accordance with the present invention comprises an activated film layer (2) arranged on a transparent substrate (1), said activated film layer (2) having a color pattern formed thereon by permeating a dye thereinto, and a thin metal film pattern (3) formed on a portion, of said activated film layer (2), which requires the formation of a black mask. Accordingly, the color filter integrated into various display devices such as a liquid crystal display is capable of displaying an image having a high contrast.

REFERENCES:
patent: 3997810 (1976-12-01), Tsutsui et al.
patent: 4744635 (1988-05-01), Takaochi et al.
patent: 4776671 (1988-10-01), Sumi et al.
patent: 4846556 (1989-07-01), Haneda

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