Use of polyaryl ether ketones as alignment layers

Details Use of polyaryl ether ketones as alignment layers Use of polyaryl ether ketones as alignment layers

1991-01-23

1992-11-24

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528128, 528220, 528298, 528299, 428 1, C08G 802, C08G 1400

Patent

active

051663040

ABSTRACT:
Use of polyaryl ether ketones comprising structural units --O--A--O--B-- gives alignment layers for liquid-crystal display and switching devices which have high transparency, low water absorption capacity and particularly uniform alignment both of smectic and of nematic liquid crystals, and thus produce a high contrast capability.

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patent: 4954604 (1990-09-01), Genz et al.
patent: 4959454 (1990-09-01), Fukuyama
patent: 4980453 (1990-12-01), Brunelle et al.
patent: 5039185 (1991-08-01), Uchida et al.
Cella, et al "Ring Opening Polymerization of Cyclic Ether & Thioetherimides & Sulfones", pp. 142-143, General Electric Co.
Cella, et al "The Preparation of Novel Cyclic Oligoners" pp. 581-582.

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