LCD including a negative biaxial retarder on each side of the li

Details LCD including a negative biaxial retarder on each side of the li LCD including a negative biaxial retarder on each side of the li

1997-01-21

1997-12-02

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349118, G02F 11335

Patent

active

056941870

ABSTRACT:
A normally white twisted birefringent liquid crystal display having first and second retardation films having retardation values of about 80-200 nm on opposite sides of a liquid crystal layer for the purpose of expanding the viewing angles of the display. Also, the viewing zone of this normally white display can be shifted vertically by rotating the optical axes of the retardation films so as to position the viewing zone away from an inversion area.

REFERENCES:
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patent: 5189538 (1993-02-01), Arakawa
patent: 5227903 (1993-07-01), Miyazawa et al.
patent: 5369513 (1994-11-01), Akatsuka et al.
patent: 5440413 (1995-08-01), Kikuchi et al.
patent: 5550661 (1996-08-01), Clark et al.
patent: 5550662 (1996-08-01), Bos
patent: 5570214 (1996-10-01), Abileah et al.

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