Electrically conductive polymers and their use as orienting laye

Details Electrically conductive polymers and their use as orienting laye Electrically conductive polymers and their use as orienting laye

1990-08-03

1992-06-02

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 78, C02F 113

Patent

active

051185385

ABSTRACT:
Switching and display elements based on ferroelectric liquid-crystals often exhibit a pronounced optical hysteresis which results in the appearance of so-called ghost images. This phenomenon can be markedly reduced or even suppressed if at least one of the two orienting layers are in direct contact with the electrodes and is composed of an electrically conductive polymer of the formula (I): ##STR1## in which R.sup.1, R.sup.2 =independently of each other, H, or straight-chain or branched alkyl or alkoxy containing 1-16 carbon atoms, or halogen,

REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4370028 (1983-01-01), Bernhardt
patent: 4599194 (1986-07-01), Frommer et al.
Nakaya et al., Japanese Journal of Applied Physics, vol. 28, pp. L116-L118; Jan. 1989.

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