Cholesteric liquid crystal display element

Details Cholesteric liquid crystal display element Cholesteric liquid crystal display element

1998-07-08

2000-08-01

Wu, Shean C.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

25229901, 2522995, 2522997, 349183, C09K 1900

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active

060963921

ABSTRACT:
A liquid crystal composition comprising a cholesteric liquid-crystal polymer, an electrolyte, and an aqueous medium is hermetically interposed between a pair of electrodes and an electric field is applied to the assemblage to control the display color. The liquid crystal composition can be provided in the form of a transparent solution of a cholesteric liquid-crystal polymer (e.g. a cellulose derivative such as a hydroxyalkylcellulose), an electrolyte (e.g. a water-soluble inorganic salt), and an aqueous medium (e.g. an aqueous solvent with a water content of 80 to 100 weight %). Using a cholesteric liquid-crystal polymer, a display device whose display color can be controlled with an electric field is provided.

REFERENCES:
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Chemical Abstracts, vol. 127, No. 14 (Oct. 1997).
Nishio et al., Macromolecules, vol. 31, pp. 2384-2386 (1998).
Okubo, J. Chem. Soc. Faraday Trans., vol. 87, No. 4, pp. 607-609 (1991).
Database WPI, Section Ch., Week 9436, 1994.
Database WPI, Section Ch., Week 9434, 1994.

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