Liquid crystal composition and liquid crystal display element

Details Liquid crystal composition and liquid crystal display element Liquid crystal composition and liquid crystal display element

2006-09-26

2006-09-26

Wu, Shean C. (Department: 1756)

Compositions

Liquid crystal compositions

C252S299700, C428S001100

Reexamination Certificate

active

07112290

ABSTRACT:
A chiral nematic liquid crystal composition has minimal temperature dependency of the natural pitch and temperature dependency of the wavelength selective reflection and low temperature storage stability thereof is excellent. A chiral nematic liquid crystal composition with a broad liquid crystal temperature range is used in a bistable liquid crystal display element, and a bistable liquid crystal display element comprising the liquid crystal composition. The chiral nematic liquid crystal composition comprises optically active compounds represented by general formula (I-a) and general formula (II-a):in-line-formulae description="In-line Formulae" end="lead"?R2P1-L1SP2-L2-P3—R3  (II-a)in-line-formulae description="In-line Formulae" end="tail"?wherein the general formula (II-a) has the same helical twisting direction as the general formula (I-a), and shows a positive temperature dependency for the natural pitch, and a HTP value of at least 3. A bistable liquid crystal display element comprises the liquid crystal composition.

REFERENCES:
patent: 4264148 (1981-04-01), Göbl-Wunsch et al.
patent: 4988458 (1991-01-01), Heppke et al.
patent: 5858271 (1999-01-01), Sekiguchi et al.
patent: 55-38869 (1980-03-01), None
patent: 63-51359 (1988-03-01), None
patent: 5-281525 (1993-10-01), None
patent: 6-265899 (1994-09-01), None
patent: 7-258641 (1995-10-01), None
patent: 9-317062 (1997-08-01), None
patent: 11-305187 (1999-11-01), None
patent: 11-323338 (1999-11-01), None
patent: WO97/29167 (1997-08-01), None
English abstract for JP 5-281525, 1993.
English abstract for JP 9-217062, 1997.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3548382