Treating method for aligning liquid crystal molecules and liquid

Details Treating method for aligning liquid crystal molecules and liquid Treating method for aligning liquid crystal molecules and liquid

1995-09-18

1997-03-04

Thomas, Alexander

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

349124, 349132, G02F 13337

Patent

active

056077327

ABSTRACT:
A treating method for aligning liquid crystal molecules, which comprises forming on a substrate a polyimide film represented by a repeating unit of the formula (I): ##STR1## wherein R is a bivalent organic group, irradiating the film with ultraviolet rays having a spatial distribution of irradiation intensity through a mask, immersing it in a developing liquid and then in a rinsing liquid to form periodical concaves and convexes on the surface of the polyimide film, and aligning liquid crystal molecules on the concave-convex surface.

REFERENCES:
patent: 4877718 (1989-10-01), Moore et al.
patent: 5053480 (1991-10-01), Koto et al.

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