| 主权项 |
1. A liquid-crystalline medium, comprising
a polymerizable component (A) containing one more polymerizable compoundsand
a liquid-crystalline component (B) containing one more compounds of formula Iin which
R0 is an alkyl or alkenyl radical having from 1 to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, in which one or more CH2 groups are optionally, independently of one another, replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —CH═CH— or —C≡C— in such a way that O atoms are not linked directly to one another,are each independently Y1 and Y2 are each, independently of one another, H or F, Z1 is —CF2O—, —OCF2— or —COO—, Z2 is —O—, —S—, —CO—, —COO—, —OCO—, —S—CO—, —CO—S—, —OCH2—, —CH2O—, —SCH2—, —CH2S—, —CF2O—, —OCF2—, —CF2S—, —SCF2—, —CH2CH2—, —CF2CH2—, —CH2CF2—, —CF2CF2—, —CH═CH—, —CF═CH—, —CH═CF—, —CF═CF—, —C≡C— or a single bond, X0 is F, Cl, halogenated alkyl, halogenated alkenyl, halogenated alkoxy, or halogenated alkenyloxy having up to 6 carbon atoms, and r is 0, 1, 2 or 3,and wherein the liquid-crystalline medium comprises one or more compounds of formulae IX to XX and XXIIIin which
R0, X0, Y1 and Y2 have the meanings given for the compound of formula I, Y3 and Y4 are each, independently of one another, H or F, L* is H or F, and R0′ and R0″ are, each independently, a straight chain alkyl having 1 to 6 carbon atoms or an alkenyl having 2 to 6 carbon atoms. |
