Patent ID: 8361343
Filing Date: 2013-01-29
Classification: C09K

Abstract:
1. A nematic liquid crystal compound comprising: a) at least 20% by weight of one or more compounds selected from the compound group A represented by general formulas AI to AVII: wherein: R X Z Z Z Y ring T m is 0 or 1, and p and q are 0 or 1, provided that p+q is 0 or 1 b) 5 to 50% by weight of one or more compounds selected from the compound group B represented by general formulas BI to BXI and at least 3% by weight of the compounds in which R 2 and/or R 3 is/are an alkenyl group: wherein: R Z Z Z Z Y rings T n is 0 or 1; characterized by the relative proportions of the above-mentioned compounds used in the nematic liquid crystal composition being determined to simultaneously obtain the following physical characteristics for the composition: a nematic-isotropic liquid transition temperature (T a nematic temperature range (ΔT a dielectric anisotropy of larger than or equal to 8×10 a weak zenithal anchoring force on at least one of two substrates for a bistable nematic liquid crystal display that confine the composition, being defined by an anchoring breaking voltage U