Liquid-crystal orientating film, method of manufacturing the fil

Details Liquid-crystal orientating film, method of manufacturing the fil Liquid-crystal orientating film, method of manufacturing the fil

1990-09-26

1992-07-07

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 75, 359 78, 428 1, G02F 11337, C09K 1900

Patent

active

051287889

ABSTRACT:
Disclosed herein is a liquid-crystal orientating film which is a polymer film consisting of stripe-shaped contracted portions extending in a predetermined direction and non-contracted portions located adjacent to the contracted portions, and which is designed to orientate liquid-crystal molecules in the direction in which the portions of the film are contracted and non-contracted. The liquid-crystal orientating film has been manufactured by applying light to selected portions of a polymer film, thereby photo-curing these portions, thus forming stripe-shaped contracted portions, stretching the remaining portions of the film, which are located adjacent to the contracted portions, by virtue of the contraction of the portions applied with light.

REFERENCES:
patent: 4247174 (1981-01-01), Walter
patent: 4725517 (1988-02-01), Nakanowatari et al.
patent: 4763995 (1988-08-01), Katagiri et al.
patent: 4878742 (1989-11-01), Ohkubo et al.
Patent Abstracts of Japan, vol. 8, No. 45 (P-257)(1482) Feb. 23, 1984 & JP-A-58 196 524 (Fujitsu K.K.) Nov. 16, 1983.
"Alignment of liquid crystals using submicrometer periodicity gratings," by Flanders et al, App. Physics Letters, vol. 32, No. 10, May 15, 1978, p. 597.

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