Surface stabilized ferroelectric liquid crystal switching using proximity effects
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United States of America Patent
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Apr 7, 1992
Grant Date -
N/A
app pub date -
Apr 19, 1991
filing date -
Apr 19, 1991
priority date (Note) -
Expired
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Abstract
An electro-optic shift register uses proximity effects to propagate data more efficiently. The apparatus includes a pair of conducting planes separated by a plane spacing, whereby one of the conducting planes includes a plurality of electrodes having an electrode gap narrower than the plane spacing. A Surface Stabilized Ferroelectric Liquid Crystal is located between the conducting planes with a thickness sufficient to enable the formation of a domain wall between the pixels corresponding with the electrodes. The resulting domain wall also overlaps the pixels and the corresponding electrodes. The domain wall provides a desirable proximity effect by overlapping regions having nonzero electrostatic potential. A three-phase timing sequence ensures the domain wall propagates in a single direction.
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