Liquid crystal display device
Patent 5512336 Issued on April 30, 1996. Estimated Expiration Date: 
November 18, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 18, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLiquid crystal device Liquid crystal alignment layer with sidechains controlling tilt angle Liquid crystal display device and retardation film Patent #: 5093739 InventorApplicationNo. 344709 filed on 11/18/1994US Classes:428/1.2, Alignment layer of specified composition349/123, Alignment layer349/177, Within nematic phase428/1.25, Polyamide428/1.26PolyimideExaminersPrimary: Ahmad, NasserAttorney, Agent or FirmForeign Patent References
International ClassG02F 001/133Foreign Application Priority Data1993-11-25 JPAbstractA liquid crystal display device according to the present invention includes: a pair of substrates opposing each other, a plurality of display device pixels being provided in a matrix shape on each of the pair of substrates; a liquid crystal layer interposed between the pair of substrates; and an orientation layer for controlling an orientation state of liquid crystal molecules in the liquid crystal layer, the orientation layer being formed on a surface of at least one of the substrates that opposes the liquid crystal layer. The orientation layer is composed essentially of a polymer alloy. Since the polymer alloy in the orientation layer has a phase separation structure, it becomes possible to obtain regularly-formed portions of liquid crystal, liquid crystal molecules in the portions being aligned either radially, bi-axially, or multi-axially, and it also becomes possible to control the sizes of such portions. As a result, such problems as contrast changes, coloration phenomena, and reversal phenomena of displayed images, which would occur due to the viewing angle dependence of the contrast with respect to the vertical and horizontal directions, are eliminated, thereby achieving high contrast and substantially no display unevenness.Other References
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