Liquid crystal composition for electrooptical devices for presen

Details Liquid crystal composition for electrooptical devices for presen Liquid crystal composition for electrooptical devices for presen

1985-01-25

1986-08-12

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522996, 350350R, 558414, C09K 334, G02F 113

Patent

active

046055100

ABSTRACT:
A liquid crystal composition for electrooptical devices for presentation of nformation comprising 2 to 4 parts by weight of liquid crystal 4-(4'-cyanodiphenyl) esters of trans-4"-n-alkylcyclohex-2-enecarboxylic acids of the general formula: ##STR1## wherein R is a normal-structure CH.sub.3 -C.sub.7 H.sub.15 radical, and 6 to 8 parts by weight of 4-n-pentyl-4'-cyanodiphenyl. The composition is characterized by a low temperature of the formation of the liquid crystal phase (below -12.degree. C.), a wide temperature range of the existence of this phase (90.degree.-100.degree. C.), a small threshold voltage (1.1-1.2 V), a short time of switching-on and -off (45 and 65 msec respectively).

REFERENCES:
patent: 3951846 (1976-04-01), Gavrilovic
patent: 4013582 (1977-03-01), Gavrilovic
patent: 4029594 (1977-06-01), Gavrilovic et al.
patent: 4113647 (1978-09-01), Coates et al.
patent: 4207252 (1980-06-01), Sato et al.
patent: 4211666 (1980-07-01), Inukai et al.
patent: 4261651 (1981-04-01), Gray et al.
patent: 4261652 (1981-04-01), Gray et al.
patent: 4505837 (1985-03-01), Romer et al.

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