Color liquid crystal display with extensions of the colored laye

Details Color liquid crystal display with extensions of the colored laye Color liquid crystal display with extensions of the colored laye

1995-10-03

1998-09-22

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349108, 349109, 349110, G02F 11335, G02F 11333

Patent

active

058122281

ABSTRACT:
The invention provides a color liquid crystal display including (a) two transparent substrates A and B disposed in facing relation, (b) a plurality of switching elements disposed on a surface of the substrate A, the surface facing the substrate B, said switching elements defining an area, (c) a light-impermeable layer disposed on a surface of the substrate B, the surface facing the substrate A, and (d) a colored layer overlying the light-impermeable layer and defining a display area corresponding to the area defined by the switching elements. The colored layer has an extension extending over the display area in longitudinal and transverse directions of the display area. The extensions of the colored layer cover the light-impermeable layer therewith to thereby prevent a light reflected from the light-impermeable layer from entering the switching element. Thus, it is possible to prevent the black level of the display area from being whitened.

REFERENCES:
patent: 4986637 (1991-01-01), Yamaguchi
patent: 5144288 (1992-09-01), Hamada et al.
patent: 5311337 (1994-05-01), McCartney, Jr.
patent: 5610738 (1997-03-01), Sasano et al.
patent: 5648858 (1997-07-01), Shibata et al.
patent: 5657105 (1997-08-01), McCartney
patent: 5680183 (1997-10-01), Sasuga et al.
"Color Liquid Crystal Display", IBM Technical Disclosure Bulletin, vol. 36, No. 5, May 1993.

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