Liquid crystal display panel

Details Liquid crystal display panel Liquid crystal display panel

1988-10-13

1990-02-27

James, Andrew J.

350334, 350337, 350346, G02F 113

Patent

active

049040588

ABSTRACT:
A double-layered super-twisted nematic liquid crystal display panel, comprising a drive cell having a first liquid crystal layer and control electrodes, and a compensator cell having a second liquid crystal layer. In the first aspect, the first and second liquid crystal layers have the same twist angle in reverse directions and the first liquid crystal layer has a product .DELTA.n.d of a birefringence .DELTA.n and a panel thickness d 1.02-1.20 times larger than that of the second liquid crystal layer. In the second aspect, the second liquid crystal layer has a twist angle larger than that of the second liquid crystal layer by 150.degree.-210.degree., preferably about 180.degree..

REFERENCES:
patent: 4039254 (1977-08-01), Harsch
patent: 4241339 (1980-12-01), Ushiyama
patent: 4443065 (1984-04-01), Funada et al.
patent: 4844569 (1989-07-01), Wada et al.

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