Photoconductive-type liquid crystal light valve with a shielding

Details Photoconductive-type liquid crystal light valve with a shielding Photoconductive-type liquid crystal light valve with a shielding

1994-06-10

1996-05-28

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

G02F 1135

Patent

active

055217303

ABSTRACT:
A photoconductive-type liquid crystal light valve having a shielding layer achieves a high resolution since shielding layer has both a high impedance and a high light-shielding property. The liquid crystal light valve comprises: a pair of transparent substrates disposed parallel to each other as a writing side and a reading side; a pair of transparent electrodes of a writing side and a reading side layered on inner side walls of the transparent substrates respectively to be face to face with each other; a photoconductive layer, a light shielding layer, a reflecting layer and a liquid crystal layer which are layered in sequence from the writing side to the reading side between the transparent electrodes, wherein the light shielding layer is made of a mixture of manganese oxide and silicon dioxide dispersed each other.

REFERENCES:
patent: 4673660 (1987-06-01), Thanh
patent: 4799773 (1989-01-01), Sterling

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