Novel liquid crystal electro-optic devices

Details Novel liquid crystal electro-optic devices Novel liquid crystal electro-optic devices

1974-06-28

1976-04-20

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

252408, 260463, 260465D, 260465F, 260465R, 350160LC, C09K 334, G02F 113, C07C12164, C07C 6996

Patent

active

039518469

ABSTRACT:
Nematic liquid crystal compounds of the formula: ##SPC1##
Wherein X can be hydrogen, alkyl (R-), alkoxy (RO-), acyloxy ##EQU1## or alkylcarbonato ##EQU2## wherein R is an alkyl group of 1-10 carbon atoms, have positive dielectric anisotropy and are useful in electro-optic cells which comprise a thin liquid crystal layer between two closely spaced parallel electrodes.

REFERENCES:
patent: 3795436 (1974-03-01), Boller et al.
patent: 3796479 (1974-03-01), Helfrich et al.
Gray, G. W. et al., Liquid Crystals & Plastic Crystals, Vol. 1, Ellis Horwood, Ltd.; London, pp. 103-152 (1/74).
Usol'tseva, V. A. et al., Russian Chem. Rev., Vol. 32, No. 9, pp. 495-507, (Sept., 1963).

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