Liquid crystal display device of optical writing type having a c

Details Liquid crystal display device of optical writing type having a c Liquid crystal display device of optical writing type having a c

1991-09-24

1994-04-19

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 70, 359 72, 359101, G02F 11335, G02F 1135, G02F 113

Patent

active

053051297

ABSTRACT:
A liquid crystal display element of optical writing type, includes: a first transparent substrate; a first transparent electrode layer formed on the first transparent substrate; a photoconductive layer formed on the first transparent electrode layer; a light absorbing layer formed on the photoconductive layer; a light reflecting layer formed on the light absorbing layer and composed of a macro molecular film of cholesteric liquid crystal; a second transparent substrate; a second transparent electrode layer formed on the second transparent substrate; and a liquid crystal layer disposed between the second transparent electrode layer and the light reflecting layer.

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patent: 5142391 (1992-08-01), Fujiwara et al.
patent: 5193015 (1993-03-01), Shanks
Bearol et al, "Ac liquid crystal light valve", Appl. phys. lett. vol. 22, No. 3, Feb. 2, 1973, pp. 90-92.
Scheffer, "Twisted Nematic with Cholesteric Reflector", J. Phys. P: Appl. Phys. vol. 8, 1975, pp. 1441-1450.
White et al, "liquid crystal light valves", Electronics letters, vol. 6, No. 26, Dec. 1970 pp. 837-839.
Martin Schadt, Jurg funfschilling, "17A.1: Novel Polarized Liquid-Crystal Color Projection and New TN-LCD Operating Modes":, SID 90 Digest, pp. 324-326.

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