Patent ID: 9550942
Date: 2017-01-24
CPC Classifications: C09K,G02F

Claim:
1. A nematic liquid-crystal medium of negative dielectric anisotropy, having a peak time (t max ) of 0.25 ms or less, which is determined with the aid of equations (1) and (2), where: S=electrode area E θ θ α for the Leslie viscosity coefficients, the following assumptions apply in addition, for α where: ρ=density (about 1 g/cm ν=flow viscosity, wherein the medium comprises 98% or more of components A and B, and the medium comprises 60-70% of components A, component A is a dielectrically negative, liquid-crystalline component, which consists of: 33% to 37%, based on the medium, of at least one compound of formula I-1 and 3% to 17%, based on the medium, of at least one compound of formula I-3 in which R wherein in at least one compound of formula I-1 R and the remainder of component A is of one or more dielectrically negative compound(s) of formula I, which are not compounds of formula I-1 or I-3, in which at least one of to denotes and the others, if present, in each case, independently of one another, have the same meaning or denote R L Z n denotes 0, 1 or 2, and component B is a dielectrically neutral, liquid-crystalline component, which consists of one or more dielectrically neutral compound(s) of formula II in which R Z and p and q, in each case independently of one another, denote 0 or 1.