Liquid crystal display having positive and negative uniaxially o

Details Liquid crystal display having positive and negative uniaxially o Liquid crystal display having positive and negative uniaxially o

1991-11-20

1993-09-28

Heyman, John S.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 73, G02F 11335

Patent

active

052490718

ABSTRACT:
In a supertwist type liquid crystal display, a pair of upper and lower polarizers and polymer films are disposed in such an arrangement that the upper polarizer, first uniaxial oriented polymer film, second uniaxial oriented polymer film, supertwist type liquid crystal cell, third uniaxial oriented polymer film, first biaxial oriented polymer film and the lower polarizer are sequentially piled on in this order, and each of said first, second and third uniaxial oriented polymer films has a positive optical anisotropy and said first biaxial oriented polymer film has a negative optical anisotropy.

REFERENCES:
patent: 5089906 (1992-02-01), Ohnishi et al.
patent: 5093739 (1992-03-01), Aida et al.
patent: 5124824 (1992-06-01), Kozaki et al.
patent: 5138474 (1992-08-01), Arakawa
patent: 5189538 (1993-02-01), Arakawa

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