Macrocyclic compounds as component for ferroelectric liquid crys

Details Macrocyclic compounds as component for ferroelectric liquid crys Macrocyclic compounds as component for ferroelectric liquid crys

1991-04-10

1993-01-12

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229961, 25229963, 2522992, 25229964, 25229965, 25229966, 25229967, 2522995, C09K 1906, C09K 1934, C09K 1952, C09K 1930

Patent

active

051787920

ABSTRACT:
A liquid crystal mixture composed of at least two components containing as one component a macrocyclic compound of the general formula (1) ##STR1## in which a, b, c, d, e, f, independently of one another, are an integer from zero to 4, a+b+c+d+e+f being greater than 7, and
--A--, --B--, --C--, --D--, --E--, --F--, identical or different, are, for example, --CH.sub.2 --, --CH.dbd.CH--, --CO-- or --COO--, leads in FLC displays to the formation of a uniform alignment and avoids twist states, which is reflected in a significantly improved contrast.

REFERENCES:
patent: 4077900 (1978-03-01), Pohl et al.
patent: 4367924 (1983-01-01), Clark et al.
patent: 4918217 (1990-04-01), Dal Canale et al.
patent: 5020881 (1991-06-01), Matsuda et al.

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