Spatial light modulator and a neural network circuit
US5364668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1992 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Jan 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.