A novel liquid crystal compound with very large dielectric constants

Abstract

We have investigated the dielectric constants and the rotational viscosity of 4-cyano-3-fluorophenly 4-heptylbenzoate. A dielectric anisotropy of about 50 has been measured in the nematic phase and related to the absence of molecular association. This outstanding property can be exploited in the twisted nematic display effect to produce threshold voltage values below 0.4 V.