Driving method for spatial light modulator and projection display system

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United States of America Patent

PATENT NO 5731797
SERIAL NO

08539314

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A driving method for a spatial light modulator can provide bright image, images of high contrast and resolution with no persistence and instability, and can be used in a projection display system. The spatial light modulator is prepared by sandwiching a ferroelectric liquid crystal layer between a first substrate and a second substrate. The first substrate is prepared by sequentially laminating a transparent conductive electrode and a photoconductive layer with rectifying properties on a glass substrate. On the photoconductive layer, a reflective layer and an alignment layer for aligning a liquid crystal layer are then laminated. The second substrate is prepared by laminating a transparent conductive electrode and an alignment layer on a glass substrate. Alternating current voltage having a waveform of inconsistent cycles is applied to a section between the transparent conductive electrodes.

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Patent Owner(s)

Patent OwnerAddress
MATSUSHITA ELECTRIC INDUSTRIAL CO LTDOSAKA JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiyama, Koji Osaka, JP 110 1782
Ogawa, Hisahito Nara, JP 34 988
Ogiwara, Akifumi Osaka, JP 6 255
Tanaka, Yukio Osaka, JP 210 3184
Tsutsui, Hiroshi Kyoto, JP 109 2003

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