Multi-band liquid crystal film laminate

Details Multi-band liquid crystal film laminate Multi-band liquid crystal film laminate

1979-06-27

1981-01-20

McCamish, Marion

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

4284231, 4284237, 428913, B32B 3120

Patent

active

042463025

ABSTRACT:
A multi-band liquid crystal film for visual observation of two or more patterns is prepared by laminating at least two polyurethane films, each containing discrete aggregates of liquid crystals against a black film such that the visual response of the liquid crystals of each succeeding polyurethane film is different than that of the liquid crystals in the other film or films.

REFERENCES:
patent: 3872050 (1975-03-01), Benton
patent: 3886014 (1975-05-01), Bayer

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