Phase difference film and liquid crystal display having the same

Details Phase difference film and liquid crystal display having the same Phase difference film and liquid crystal display having the same

1991-11-21

1993-05-25

Thomas, Alexander S.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

428522, 428910, 359 73, G02F 11335

Patent

active

052138526

ABSTRACT:
Disclosed is a phase difference film in the form of a uniaxially stretched film having a negative intrinsic birefringence which is made of a styrene/acrylonitrile copolymer. The copolymer has a styrene unit and an acrylonitrile unit in the range of 85/15 to 50/50 by weight (former/latter) and a weight-average molecular weight in the range of 200,000 to 900,000. The liquid crystal display provided with the phase difference film is also disclosed.

REFERENCES:
patent: 3862880 (1975-01-01), Feldman

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