FLÜSSIGKRISTALLINES MEDIUM

摘要

A liquid crystal medium contains (a) a cyclohexylene- or phenylene-difluorophenylene compound; (b) a cyclohexylene-cyclohexylene (or phenylene)-difluorophenylene compound; and (c) a polymerizable compound. A liquid crystal medium contains (a) a cyclohexylene- or phenylene-difluorophenylene compound of formula (I); (b) a cyclohexylene-cyclohexylene (or phenylene)-difluorophenylene compound of formula (II); and (c) a polymerizable compound. R1 and R2 = 1-12C alkyl with one or two non-adjacent CH2 groups optionally replaced by -O-, -CH:CH-, -CO-, -OCO- or -COO- such that O atoms are not directly bonded; and ring A = 1,4-cyclohexylene or 1,4-phenylene