Spatial light modulator and a neural network circuit

Details Spatial light modulator and a neural network circuit Spatial light modulator and a neural network circuit

1992-01-03

1994-11-15

Thomas, Alexander S.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

359 75, 359 72, G02F 11337

Patent

active

053646681

ABSTRACT:
The present invention relates to a spatial light modulator used for an optical computing system or display, which comprises a photoconductive layer having a rectification function for receiving incident lights to generate charges, an electrode for accumulating the charges and a ferroelectric liquid crystal layer for modulating the incident light according to bias voltage change with the accumulated charges, wherein the ferroelectric liquid crystal layer is arranged between a pair of alignment layers made of polyimide represented by the general formula (I); ##STR1## wherein n is 2 or more, X is S, Se or Te, Y is an aromatic group or a substituted aromatic group, and Z is a group containing an aromatic group. In the spatial light modulator, any charges are not accumulated on the alignment layer with the driving time and thus a bistable memory condition can be realized.

REFERENCES:
patent: 5046822 (1991-09-01), Matsuda et al.
patent: 5130830 (1992-07-01), Fukushima et al.
patent: 5135678 (1992-08-01), Murata et al.

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