Liquid crystal device

Details Liquid crystal device Liquid crystal device

1993-09-20

1995-05-30

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, G02F 11337

Patent

active

054199310

ABSTRACT:
A liquid crystal device is constituted by disposing a liquid crystal between a pair of substrates; at least one of which has thereon an alignment film comprising a polymer selected from Polymers (I)-(III) below:
Polymer (I) which is a polymer composite comprising at least two polymer components including a polyamide represented by a structural unit of the following formula (1): ##STR1## wherein R.sub.11 and R.sub.12 independently denote an alkyl group having 1-10 carbon atoms or a fluoroalkyl group having 1-10 carbon atoms;
Polymer (II) which is a composite polyamide having at least two species of dicarboxylic acid-originated units each represented by formula (2) below: ##STR2## wherein R.sub.21 denotes a divalent organic residue group including an aromatic ring; and a diamine-originated unit represented by formula (3) below: ##STR3## wherein R.sub.22 and R.sub.23 independently denote an alkyl group having 1-10 carbon atoms, with the proviso that at least one species of the dicarboxylic acid originated units is one having a straight molecular structure; and
Polymer (III) which is a polyamide composite comprising at least two polyamides formed from an aromatic ring-containing acid component and a diamine component represented by formula (4) below: ##STR4## wherein R.sub.41 and R.sub.42 independently denote an alkyl group having 1-10 carbon atoms.

REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4561726 (1985-12-01), Goodby et al.
patent: 5129727 (1992-07-01), Hanyu et al.
patent: 5192596 (1993-03-01), Hanyu et al.
patent: 5250330 (1993-10-01), Asaoka

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