Liquid crystal compensation cell including a pair of compensatin

Details Liquid crystal compensation cell including a pair of compensatin Liquid crystal compensation cell including a pair of compensatin

1995-01-23

1996-09-03

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 73, 359 76, 359102, G02F 11347, G02F 11335, G02F 11337, G02F 11333

Patent

active

055529089

ABSTRACT:
A film type compensation cell for an LCD which compensates for the twist angle of the liquid crystal in the LCD. The compensation cell has two compensation films, having orientation grooves formed on the surfaces thereof. Liquid crystal is between the two compensation films and is twisted in an opposite direction of the liquid crystal in the LCD. Compensation cells can be manufactured by forming orientation grooves on the surfaces of the compensation films and applying a liquid crystal therebetween. The compensation films are then pressed together and cut to the requisite size.

REFERENCES:
patent: 4533214 (1985-08-01), Penz et al.
patent: 4813770 (1989-03-01), Cleve et al.
patent: 4941737 (1990-07-01), Kimura
patent: 5089906 (1992-02-01), Ohnishi et al.
patent: 5179457 (1993-01-01), Hirataka et al.
patent: 5241408 (1993-08-01), Ishikawa et al.
patent: 5400158 (1995-03-01), Ohnishi et al.

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