Liquid crystal composition and liquid crystal device

Details Liquid crystal composition and liquid crystal device Liquid crystal composition and liquid crystal device

2007-05-22

2007-05-22

Wu, Shean C (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C428S001300, C252S299010, C252S299100

Reexamination Certificate

active

11221828

ABSTRACT:
A novel liquid crystal composition is disclosed. The liquid crystal composition comprises at least one dual-frequency switchable smectic liquid crystal, and at least one dichroic dye. And a novel liquid crystal device is also disclosed. The device comprises a pair of electrodes of which at least one is a transparent electrode, and a liquid crystal layer between the pair of electrodes comprising a liquid crystal composition comprising at least one dual-frequency switchable smectic liquid crystal, and at least one dichroic dye.

REFERENCES:
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patent: 5621552 (1997-04-01), Coates et al.
patent: 6486928 (2002-11-01), Lin et al.
patent: 6538714 (2003-03-01), Sahouani et al.
patent: 6574044 (2003-06-01), Sahouani et al.
patent: 103095 (1984-03-01), None
patent: 2004-117453 (2004-04-01), None
English translation by computer for JP 2004-117453, http://www4.ipdl.ncipi.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2004-117453.
English abstrat for EP 103095 by Derwent
English abstract for JP 2004-117453.
Bücher et al., “Frequency-addressed liquid crystal filed effect”, Applied Physics Lettters, Aug. 15, 1974, pp. 186-188, vol. 25, No. 4.
Coates et al., “A Variable Tilt Smectic A Electro-optic Effect Giving Stored Colours”, Mol. Cryst. Liq. Cryst., vol. 41 (Letters), pp. 151-154.

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