Liquid crystal device

Details Liquid crystal device Liquid crystal device

1992-11-25

1994-05-31

Thomas, Alexander S.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

359 75, 359 76, 359 78, 4284735, G02F 11337

Patent

active

053168054

ABSTRACT:
A liquid crystal device is formed by applying an alignment film comprising a fluorine-containing polyimide having a fluorine-containing substituent in its moiety originated from a diamine on at least one of a pair of substrates sandwiching a chiral smectic liquid crystal. Preferably, the respective substrates are provided with such florine-containing polyimide alignment films which have been rubbed in directions which are substantially parallel with each other and identical to each other or which intersect each other at a small counter-clockwise intersection angle. The liquid crystal device thus formed shows a high contrast display, particularly by multiplexing drive, free from after-image because of quick responsiveness.

REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4561726 (1985-12-01), Goodby et al.
patent: 4735492 (1988-04-01), Sekine et al.
patent: 4820026 (1989-04-01), Okada et al.
patent: 4883344 (1989-11-01), Okada et al.
patent: 4932757 (1990-06-01), Hanyu et al.

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