Compositions – Liquid crystal compositions
Reexamination Certificate
2009-02-17
2011-11-29
Visconti, Geraldina (Department: 1722)
Compositions
Liquid crystal compositions
C428S001100, C428S001300, C430S020000, C349S187000
Reexamination Certificate
active
08066905
ABSTRACT:
An object of the present invention is to provide an optical element which can suppress a production cost, has good heat resistance, uniformly maintains the fixed orientation of a liquid crystal polymer in a wide temperature range, shows a low haze with reliability, and can maintain desired birefringence property with reliability. The present invention relates to an optical element formed by forming, on an upper surface of a base material having light transmittance, at least a birefringence layer having a structure obtained by fixing liquid crystal monomers each having a polymerizable group at a terminal thereof in a state where the monomers are homeotropically oriented, and by removing an additive layer formed on the upper surface of the birefringence layer.
REFERENCES:
patent: 5680184 (1997-10-01), Nishino
patent: 7514126 (2009-04-01), Suemasu
patent: 7582336 (2009-09-01), Suemasu
patent: 7622166 (2009-11-01), Ishizaki et al.
patent: 2005/0195479 (2005-09-01), Ishizaki et al.
patent: 2006/0221282 (2006-10-01), Suemasu et al.
patent: 2006/0222974 (2006-10-01), Suemasu et al.
patent: 2006/0246229 (2006-11-01), Suemasu
patent: 2007/0087135 (2007-04-01), Hayashi
patent: 2007/0206129 (2007-09-01), Nakamura et al.
patent: 2009/0162542 (2009-06-01), Suemasu
patent: 1116316 (1996-02-01), None
patent: 1462898 (2003-12-01), None
patent: A-05-142531 (1993-06-01), None
patent: A-2002-174724 (2002-06-01), None
patent: A-2002-174725 (2002-06-01), None
patent: A-2003-121852 (2003-04-01), None
patent: A-2005-165238 (2005-06-01), None
Dai Nippon Printing Co. Ltd.
Oliff & Berridg,e PLC
Visconti Geraldina
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