Liquid-crystal display device and method for both displaying fas

Details Liquid-crystal display device and method for both displaying fas Liquid-crystal display device and method for both displaying fas

1994-03-15

1996-08-20

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 86, 359 90, G02F 113

Patent

active

055484204

ABSTRACT:
Light-controlling layer which contains at least a liquid crystal as a component is combined with photoconductive layer that is provided on the side of the layer closer to exposing unit and the impedance of which varies in accordance with the intensity of input light. Exposing unit exposes the photoconductive layer to write image into the light-controlling layer. Gradation control unit modulates the output light of the exposing unit on the basis of a signal indicative of the multi-level density of the image to be written, thereby controlling the light transmittance of the light-controlling layer.

REFERENCES:
patent: 5140448 (1992-08-01), Bone et al.
patent: 5157525 (1992-10-01), Eaton et al.
patent: 5218264 (1993-06-01), Hirai et al.
"Controlling Formation of Liquid Crystal in Mixed Liquid Crystal-Polymer System by Optical Isomerization of Azobenzene Structure," Journal of the Chemical Society of Japan, No. 8, pp. 815-818, 1990 (no month).

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