Liquid crystal composition, liquid crystal optical device,...

Liquid crystal cells – elements and systems – Cell containing liquid crystal of specific composition – In nematic phase

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Liquid crystal composition, liquid crystal optical device,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal composition, liquid crystal optical device,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal composition, liquid crystal optical device,... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2674193

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.