Räumlicher Lichtmodulator und Neuronalnetzwerkschaltung

• Main Authors: TAKIMOTO, AKIO, NEYAGAWA-SHI, OSAKA, JP, OGAWA, HISAHITO, IKOMA-GUN, NARA, JP, MIYAUCHI, MICHIHIRO, NAGOYA-SHI, AICHI, JP, NOMURA, KOJI, IKOMA-SHI, NARA, JP, AKIYAMA, KOJI, NEYAGAWA-SHI, 572, OSAKA, JP, ASAYAMA, JUNKO, SUITA-SHI, OSAKA, JP, KURATOMI, YASUNORI, SUITA-SHI, OSAKA, JP
• Format: Patent
• Language: German
• Published: 05.06.1997
• Edition: 6
• Subjects: ANALOGUE COMPUTERS; CALCULATING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC DIGITAL DATA PROCESSING; FREQUENCY-CHANGING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP

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); wherein n is 2 or more, X is O, S, Se or Te, Y is a aromatic group or a substituted aromatic group, Z is a group containing a aromatic group. In the spatial light modulator, any charges are not accumulated on an alignment layer with the driving time and thus a bistable memory condition can be realized.