Liquid crystal light valve utilizing hydrogenated amorphous sili

Details Liquid crystal light valve utilizing hydrogenated amorphous sili Liquid crystal light valve utilizing hydrogenated amorphous sili

1987-05-01

1990-05-15

Miller, Stanley D.

350334, G02F 113

Patent

active

049252763

ABSTRACT:
A liquid crystal light valve is provided which comprises a pair of glass cover plates. Transparent electrodes are located on the interfaces of each cover plate. The electrodes are electrically connected to alternating current sources. Insulating films are placed on either side of a liquid crystal material to provide electrical and chemical isolation between the liquid crystal and the electrodes. Spacers are employed to maintain a suitable gap between the insulating films and to prevent the liquid crystal from escaping. Positioned on the side of the liquid crystal from which writing light enters the light valve are, respectively, a dielectric mirror, a light blocking layer and a photoactive layer. According to the present invention, the photoactive layer comprises hydrogenated amorphous silicon which is configured as a photodiode with a junction layer facing the writing light.

REFERENCES:
patent: 3824002 (1974-07-01), Beard
patent: 3976361 (1976-08-01), Fraas et al.
patent: 4032954 (1977-06-01), Grinberg et al.
patent: 4191452 (1980-03-01), Grinberg et al.
patent: 4225222 (1980-09-01), Kempter
patent: 4569719 (1986-02-01), Coleman
patent: 4597162 (1986-07-01), Johnson et al.
patent: 4693561 (1987-09-01), Ashley
J. D. Joannopoulos, "The Physics of Hydrogenated Amorphous Silicon I", 1984, pp. 103-105.
Hayama, "Amorphous-Silicon Thin-Film Metal-Oxide--Semiconductor Transistors", App. Physics Lett. 36(9), May 1980.
Samuelson, "Fast Photoconductor Coupled Liquid--Crystal Light Valve", Appl. Phys. Lett. 34(7), Apr. 1979.
N. Yamamoto, et al., "Electrophotographic Properties of RF Glow Discharge-Produced Amorphous Si:H Film", Japan J. Appl. Phys., vol. 20 (1981) Supp. 20-1, pp. 305-310.
N. Yamamoto, "Photoelectric Properties of GD a-Si:H Monolayer Films for Electrophotographic Applications", J. Physique 42, C4, 495-98 (1981).
I. Shimizu, et al., "a-Si:H in Electrophotography and Vidicon Devices", J. Physique, 42, C4, 1123-30 (1981).
I. Shimizu, et al., "Studies on Primary Photocurrent of a-Si:H Using Xerographic & Vidicon Techniques", AIP Conf. Proc. No. 73, pp. 288-292 (1981).
I. Shimizu, et al., "A-Si Thin Film as a Photo-Receptor for Electro-Photography", J. Non-Cryst. Solids, 35/36, 773-778 (1980).
L. M. Fraas et al., "AC Photoresponse of a Large-Area Imaging CdS/CdTe Heterojunction", J. Appl. Physics, vol. 47, No. 2, Feb. 1976, pp. 584-590.
Ashley and Davis, "Amorphous Silicon Photoconductor in a Liquid Crystal Spatial Light Modulator", Applied Optics, vol. 26, No. 2, Jan. 15, 1987, pp. 241-246.
L. Samuelson et al., "Fast Photoconductor Coupled Liquid-Crystal Light Valve", Appl. Phys. Lett. 34(7), Apr. 1, 1979, pp. 450-452.

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