Liquid crystal twist cell with grey scale capabilities

Details Liquid crystal twist cell with grey scale capabilities Liquid crystal twist cell with grey scale capabilities

1975-09-26

1977-08-23

Corbin, John K.

G02F 113

Patent

active

040436403

ABSTRACT:
A liquid crystal twist cell is disclosed in which the transmission characteristics may be conveniently controlled so as to produce a grey scale. The elastic constants of the crystal are maintained within a specified range to enable the convenient variation of transmission characteristics.

REFERENCES:
tarry; H. A., "Effect of Temperature on the Transient Repsonse of Twisted Nematic L-C Films", Elec. Lett., vol. 11, No. 15, July 24, 1975, pp. 339-341.
Gruler; H., "Elastic properties of the rematic phase influenced by molecular properties", Jour. of Chem. Physics, vol. 61, No. 12, Dec. 15, 1974, pp. 5408-5412.
Haller; I., "Electic Constants of Nematic Liquid Crystalline Phase. . . .", J. of Chem. Physics, vol. 57, No. 4, Aug. 15, 1972, pp. 1400-1405.

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