Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1974-07-12

1980-11-11

Bauer, Edward S.

350157, 350335, G02F 1133

Patent

active

042329485

ABSTRACT:
A liquid crystal device includes a liquid crystal cell capable of rotating plane polarized light, one or more layers of a birefringent material, and polarizers. Application of voltages to the liquid crystal cell changes the angular rotation of light passing through the device and hence changes the observed color. The actual color observed is dependent on the birefringent film, its thickness and its relative angular orientation to the polarized light.

REFERENCES:
patent: 3501219 (1970-03-01), Caulfield
patent: 3731986 (1973-05-01), Fergason
patent: 3756694 (1973-09-01), Soref et al.
patent: 3784280 (1974-01-01), Bigelow
patent: 3785721 (1974-01-01), Harsch
patent: 3806227 (1974-04-01), Grenbel et al.
patent: 3813144 (1974-05-01), Kumada et al.
Scheffer: "New Multicolor Liquid Crystal Displays That Use A Twisted Nematic Electro-Optical Cell," Journal of Applied Physics, vol. 44, Nov., 1973.

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