Liquid crystal display device with compensation and LC twist ang

Details Liquid crystal display device with compensation and LC twist ang Liquid crystal display device with compensation and LC twist ang

1992-02-04

1993-08-31

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 73, G02F 1133, G02F 11335

Patent

active

052414086

ABSTRACT:
In a liquid crystal display device having a voltage-driven liquid crystal cell sandwiched between two spaced polarizers, the cell comprises a liquid crystal layer having a twisted molecular alignment with no applied voltage and also having an optical rotary power with respect to visible rays. In the vicinity of the cell or in close contact therewith, there is disposed an optically anisotropic layer having an optical rotary power smaller than that of the cell.

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patent: 5126868 (1992-06-01), Kizaki et al.
patent: 5166817 (1992-11-01), Ota et al.
patent: 5187603 (1993-02-01), Bos
Patent Abstracts of Japan, vol. 13, No. 508, (P-960)(3856), Nov. 15, 1989, and JP 1-206 318, Aug. 18, 1989, Yoshihiro Matsuo et al., "Liquid Crystal Display Device".
Patent Abstracts of Japan, vol. 13, No. 89, (P-836)(3437), Mar. 2, 1989, and JP 63-271 415, Nov. 9, 1988, Chiyoaki Iijima et al., "Liquid Crystal Display Device".
Japanese Journal of Applied Physics/Part 2, vol. 26, No. 11, Nov. 1987, pp. L1784-L1786, Kazunori Katoh et al., "Application of Retardation Compensation; A New Highly Multiplexable Black-White Liquid Crystal Display With Two Supertwisted Nematic Layers".

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