Liquid-crystalline medium

Details Liquid-crystalline medium Liquid-crystalline medium

1995-05-30

1997-04-01

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229966, 349182, C09K 1930, C09K 1952, G02F 113

Patent

active

056162847

ABSTRACT:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which X is fluorine, chlorine, CF.sub.3, OCF.sub.3 or OCHF.sub.2, one of the radicals 1.sup.1 and 1.sup.2 is fluorine, the other radical 1.sup.1 or 1.sup.2 is hydrogen and R is alkyl, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms.

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patent: 5286411 (1994-02-01), Rieger et al.
patent: 5350535 (1994-09-01), Rieger et al.
patent: 5368772 (1994-11-01), Rieger et al.
patent: 5397505 (1995-03-01), Rieger et al.
patent: 5409637 (1995-04-01), Rieger et al.

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