Liquid crystal cells – elements and systems – Cell containing liquid crystal of specific composition – In nematic phase
Reexamination Certificate
2011-01-04
2011-01-04
Caley, Michael H (Department: 2871)
Liquid crystal cells, elements and systems
Cell containing liquid crystal of specific composition
In nematic phase
C349S086000, C349S088000, C349S177000, C430S020000
Reexamination Certificate
active
07864287
ABSTRACT:
The present invention provides a liquid crystal optical device showing small haze value in transparent state and being excellent in productivity, a process for producing such a device, and a liquid crystal composition for producing such a device.The liquid crystal composition of the present invention is a liquid crystal composition containing a nematic liquid crystal and at least two types of optically active materials having different optical rotatory directions, wherein one of the optically active materials having different optical rotatory directions is a non-curable compound, the other one of the optically active materials is a curable compound, and the liquid crystal composition as a whole shows a nematic phase. By sandwiching the liquid crystal composition between inner faces of a pair of insulation substrates at least one of which is transparent, and curing the curable compound in a state that the liquid crystal is aligned, it is possible to obtain a liquid crystal optical device showing small haze value in transparent state and being excellent in productivity.
REFERENCES:
patent: 4688900 (1987-08-01), Doane et al.
patent: 4818070 (1989-04-01), Gunjima et al.
patent: 4834509 (1989-05-01), Gunjima et al.
patent: 5103327 (1992-04-01), Hirai et al.
patent: 5150232 (1992-09-01), Gunkima et al.
patent: 5162934 (1992-11-01), Gunjima et al.
patent: 5196952 (1993-03-01), Hirai et al.
patent: 5200845 (1993-04-01), Crooker et al.
patent: 5216531 (1993-06-01), Hirai et al.
patent: 5235445 (1993-08-01), Hirai et al.
patent: 5437811 (1995-08-01), Doane et al.
patent: 6034753 (2000-03-01), Li et al.
patent: 6122021 (2000-09-01), Hirai et al.
patent: 6674494 (2004-01-01), Niiyama et al.
patent: 6723393 (2004-04-01), Niiyama et al.
patent: 7011870 (2006-03-01), Niiyama et al.
patent: 7011913 (2006-03-01), Teranishi et al.
patent: 2-272090 (1990-11-01), None
patent: 8-304830 (1996-11-01), None
patent: 10-195445 (1998-07-01), None
patent: 2000-119656 (2000-04-01), None
patent: 2000-178557 (2000-06-01), None
patent: 2004-198949 (2004-07-01), None
patent: WO 94/23331 (1994-10-01), None
U.S. Appl. No. 12/352,867, filed Jan. 13, 2009, Niiyama, et al.
Kawakami Remi
Niiyama Satoshi
Asahi Glass Company Limited
Caley Michael H
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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