Liquid crystal composition and a liquid crystal display element

Details Liquid crystal composition and a liquid crystal display element Liquid crystal composition and a liquid crystal display element

1993-05-28

1994-10-25

Wu, Shean

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229966, 25229967, 359103, C09K 1930, C09K 1952, C09K 1912, G02F 113

Patent

active

053586620

ABSTRACT:
A liquid crystal composition comprising (1) at least one compound selected from those expressed by the formula (I) and (2) at least one compound selected from those expressed by the formulas (II), (III), (IV) and (V): ##STR1## wherein R.sub.1 to R.sub.5 are C.sub.1-10 alkyl; R.sub.6 and R.sub.7 are C.sub.1-10 alkyl or alkenyl; X is H or F; X.sub.1 and X.sub.2 are F, --CF.sub.3, --OCF.sub.3, --CHF.sub.2 or --OCHF.sub.2 ; Y.sub.1 and Y.sub.2 are H or F; Z.sub.1, Z.sub.2 and Z.sub.4 are --COO--, --CH.sub.2 CH.sub.2 -- or a single bond; Z.sub.3, Z.sub.5 and Z.sub.6 are --COO--, --CH.sub.2 CH.sub.2 --, --C.tbd.C-- or a single bond; and A is ##STR2## which composition is provided with characteristics of high specific resistance, low viscosity while keeping small current consumption, a suitable clearing point and threshold voltage.

REFERENCES:
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patent: 5122295 (1992-06-01), Weber et al.
patent: 5167860 (1992-12-01), Sawada et al.
patent: 5171469 (1992-12-01), Hittich et al.
patent: 5208386 (1993-04-01), Sasaki et al.
patent: 5233445 (1993-08-01), Kamath et al.

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