Color filter with a porous activated film layer having dye fixed

Details Color filter with a porous activated film layer having dye fixed Color filter with a porous activated film layer having dye fixed

1987-09-01

1988-05-17

Miller, Stanley D.

Compositions

Radioactive compositions

Nuclear reactor fuel

252584, 350339F, G02B 522

Patent

active

047446358

ABSTRACT:
The color filter of this invention comprises a transparent substrate, a porous activated film layer formed on the substrate and made of activated alumina or activated silica or a mixture thereof, a colored area or a pattern formed by the dye fixed in the minute pores of the activated film layer, and a coating layer sealingly closing the upper portions of the minute pores of said activated film layer. This color filter is relatively simple and easy to manufacture, superior in resistivity to heat, water, chemicals, solvents, etc. and suitable for use as a color filter in various display devices, particularly liquid crystal display devices.

REFERENCES:
patent: 3865469 (1975-02-01), Asai et al.
patent: 4239842 (1980-12-01), Sandhu
patent: 4383018 (1987-05-01), Martin et al.

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