Nematogens for Matrix-Addressed Twisted Nematic Displays, II
Open Access
- 1 October 1983
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 38 (10) , 1221-1226
- https://doi.org/10.1515/znb-1983-1010
Abstract
Nonpolar aromatic nematogens useful in mixtures for high performance matrix-addressed twisted nematic displays were synthesized. Nematic phases were obtained by introducing lateral halo-substituents in purely smectic biphenyls and phenyl pyrimidines. Because of their chemical stability, low viscosity and negative dielectric anisotropy, the substituted biphenyls can also be used in mixtures of negative dielectric anisotropy which are needed for the homeotropic nematic and guest-host displays with positive contrast. The effect of lateral halo-substituents on the mesomorphic properties of rod like molecules is discussed.Keywords
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