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US Patent 7499135 Liquid crystal display

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Patent
Patent

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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7499135
Date of Patent
March 3, 2009
Patent Application Number
11148826
Date Filed
June 9, 2005
Patent Primary Examiner
‌
Dung T. Nguyen
Patent abstract

A method of controlling the alignment of a ferroelectric liquid crystal without the need of an alignment process, such as a rubbing process and a photo alignment process, in a liquid crystal display using a ferroelectric liquid crystal. The method uses a columnar alignment layer having a column structure with a plate-like molecule having photo dichroism in the visible light range as one of the alignment layers for controlling the alignment of the ferroelectric liquid crystal. The method forms a reactive liquid crystal layer produced by fixing a reactive liquid crystal including a polymerizable liquid crystal material on the side to be contacted with the ferroelectric liquid crystal on the columnar alignment layer, showing the nematic phase on the columnar alignment layer.

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