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Liquid crystal display device having a liquid crystal layer which contains liquid crystal molecules in a plurality of alignment state and method for driving the same
   
Document Number
US Patent 6175401
Issued Date
January 16, 2001
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Abstract
A liquid crystal material which exhibits an antiferroelectric phase while the liquid crystal material is in a bulk state, is sealed between substrates. The liquid crystal layer sealed between the substrates exhibits a mixed phase wherein the liquid crystal layer contains liquid crystal molecules aligned in a plurality of alignment states which differ from each other in the alignment order of the liquid crystal molecules forming adjoining smectic layers. The direction of the director of the liquid crystal layer varies continuously in accordance with the polarity and magnitude of a voltage applied to the liquid crystal layer. Gradation display can be achieved by arranging polarization plates such that the substrates are sandwiched therebetween.
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Liquid crystal display device having a liquid crystal layer which contains liquid crystal molecules in a plurality of alignment state and method for driving the same - US Patent 6175401 Drawing
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Number of Claims:
21
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Published
January 16, 2001
Application Number
09/067,914
Filed
May 1, 1998
US Classification
349/172   349/173 349/174
Int'l Classification
G02F   1/141   (20060101)   G02F   1/13   (20060101)  
Examiner
Priority Data
May 02, 1997 [JP] 9-127802 May 02, 1997 [JP] 9-127803 May 02, 1997 [JP] 9-127804 May 02, 1997 [JP] 9-127805 May 02, 1997 [JP] 9-127806 May 08, 1997 [JP] 9-132988
USPTO Field of Search
349/172   349/173   349/174   349/37  
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