Method for producing viewing angle compensator for liquid crysta

Details Method for producing viewing angle compensator for liquid crysta Method for producing viewing angle compensator for liquid crysta

1994-03-09

1996-02-13

Beck, Shrive

Coating processes

Optical element produced

359 73, B05D 506

Patent

active

054910013

ABSTRACT:
The present invention relates to a method for producing a viewing angle compensator for liquid crystal displays which diminishes the view angle dependency of the liquid crystal display. More specifically, the method of making the view angle compensator involves applying a coating of an optically active polyester containing as a constituent a hydrocarbon unit selected from the group consisting of bulky aromatic units, polycyclic hydrocarbon units and ortho-substituted aromatic units, or a composition containing a liquid crystalline polyester which contains the said hydrocarbon unit as a constituent and also contains an optically active compound to a light transmitting substrate. The foregoing coating is heat-treated at a temperature higher than the glass transition point of the polyester to form a cholesteric orientation. The heat-treated coating is thereafter cooled to a temperature lower than the glass transition temperature to solidify a cholesteric structure.

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