US Patent 7053975 Liquid crystal device
Patent 7053975 was granted and assigned to ZBD Displays on May, 2006 by the United States Patent and Trademark Office.
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Patent abstract
Liquid crystal devices are described that exhibit bistable, tri-stable or other multistable operation. The stable liquid crystal configurations are attained using a surface alignment grating (144) on the internal surface of at least one cell wall (142). The surface profile of the surface alignment grating comprises three or more defect sites per grating period and permit the liquid crystal molecules to adopt any one of two or more stable pretilt angles in the same azimuthal plane. Application of a suitable voltage causes the liquid crystal material to switch between the stable configurations.
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Patent Inventor Names
Carl V Brown0
Emma L Wood0
Guy P Bryan-Brown0
John C Jones0
Victor C Hui0
Date of Patent
May 30, 2006
0Patent Application Number
103334720
Date Filed
July 18, 2001
0Patent Primary Examiner
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US Patent 7053975 Liquid crystal device
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