Electro-optical liquid-crystal display device

Details Electro-optical liquid-crystal display device Electro-optical liquid-crystal display device

1974-10-16

1977-05-24

Bauer, Edward S.

350156, 350157, G02F 113

Patent

active

040251616

ABSTRACT:
An electro-optical liquid-crystal display device is disclosed which retains its contrast even when viewed through an intervening plane polarizer. This objective is achieved by supplementing the plane polarizer on the viewing side of the display device with a .lambda./4 layer such that the plane polarizer together with the .lambda./4 layer form a circular polarizer.

REFERENCES:
patent: 3756694 (1973-09-01), Soref et al.

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