Elliptically polarizing plate and liquid crystal display

Details Elliptically polarizing plate and liquid crystal display Elliptically polarizing plate and liquid crystal display

2005-01-04

2005-01-04

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S096000, C349S101000, C349S102000, C349S103000, C349S099000

Reexamination Certificate

active

06839103

ABSTRACT:
An elliptically polarizing plate, comprising a polarizer, a first optical anisotropic layer having positive refractive index anisotropy and an optical axis of the anisotropy that is tilted, and a second optical anisotropic layer having negative refractive index anisotropy and an optical axis that is tilted, have accurate retardation compensation of a liquid crystal cell, and the liquid crystal display maintains a display contrast having a sufficient visibility when the viewing angle is changed and which does not generate colorization.

REFERENCES:
patent: 5196953 (1993-03-01), Yeh et al.
patent: 5504603 (1996-04-01), Winker et al.
patent: 5568290 (1996-10-01), Nakamura
patent: 5825542 (1998-10-01), Cobb et al.
patent: 0 838 713 (1997-10-01), None
patent: 1 156 349 (2000-02-01), None
Partial translation into English of Japanese Patent Publication No. 7-35924.
Partial translation into English of Japanese Patent Publication No. 10-123506.
Partial translation into English of Japanese Patent Publication No. 2000-304930.

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