Liquid crystal devices and process for producing the same

Details Liquid crystal devices and process for producing the same Liquid crystal devices and process for producing the same

1992-12-01

1994-04-19

Tucker, Philip

Compositions

Liquid crystal compositions

Containing nonchiral additive having no specified mesophase

25229901, 25229961, 359 51, 359 52, C09K 1954, C09K 1952, G02F 113

Patent

active

053043235

ABSTRACT:
A liquid crystal device comprising a pair of substrate, at least one of them being transparent, and a light-control layer supported therebetween, wherein said light-control layer comprises a liquid crystal material showing positive dielectric anisotropy and a transparent solid substance, said liquid crystal material forming a continuous phase, and said transparent solid substance existing in said continuous phase in the form of dispersed particles or a three-dimensional network. The device exhibits a clear threshold voltage, a high fast response time and a highly contrast display with a low applied voltage.

REFERENCES:
patent: 3687515 (1972-08-01), Haas et al.
patent: 3803050 (1974-04-01), Haas et al.
patent: 4631328 (1986-12-01), Ringsdorf et al.
patent: 4707080 (1987-11-01), Fergason
patent: 4834509 (1989-05-01), Gunjima et al.
patent: 4834904 (1989-05-01), Krause et al.
patent: 4850683 (1989-07-01), Kawaguchi et al.
patent: 4884877 (1989-12-01), Fergason
patent: 4888126 (1989-12-01), Mullen et al.
patent: 4898454 (1990-02-01), Buckley et al.
patent: 5089904 (1992-02-01), Fergason
Ringsdorf et al., Makromol. Chem. Rapid Commun., vol. 3, 1982, pp. 745-751.

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