Liquid-crystal display

A LC medium comprising:

• one or more polymerised compounds, wherein said polymerised compound(s) is (are) obtained by polymerisation of one or more polymerisable compounds with application of an electrical voltage,
• wherein at least one of the polymerisable compounds has a biaryl structural element of Formula I
• which is linked at at least one position to one or more polymerisable groups, optionally via an organic group or a spacer group,
• wherein A and B are each, independently of one another, an aromatic or fully or partially saturated ring, in which, in the individual rings, one or more CH groups are each optionally replaced by N, and one or more CH2 groups are each optionally replaced by O or S in such a way that O and/or S atoms are not linked directly to one another, and where the individual rings may also be mono- or polysubstituted, and
• wherein said at least one polymerisable compound which contains a structural element of Formula I is employed as a racemate.

A polymerisable compound selected from formula I1b1

• in which
• A and B are each, independently of one another, an aromatic or fully or partially saturated ring, in which, in the individual rings, one or more CH groups are each optionally replaced by N, and one or more CH2 groups are each optionally replaced by O or S in such a way that O and/or S atoms are not linked directly to one another, and where the individual rings may also be mono- or polysubstituted,
• Y1-2 are each, independently of one another, H, halogen, SF5, NO2, a carbon group or a hydrocarbon group, and Y1 and Y2 contain or is a polymerisable group,
• L is F, Cl, Br, I, —CN, —NO2, —NCO, —NCS, —OCN, —SCN, —C(═O)N(Rx)2, —C(═O)Y7, —C(═O)Rx, —N(Rx)2, optionally substituted silyl, aryl having 6 to 40, straight-chain or branched alkyl having 1 to 25 C atoms, alkoxy having 1 to 25 C atoms, alkylcarbonyl having up to 25 C atoms, alkoxycarbonyl having up to 25 C atoms having up to 25 C atoms, alkylcarbonyloxy having up to 25 C atoms, or alkoxycarbonyloxy having up to 25 C atoms, in which one or more H atoms are each optionally replaced by F or Cl,
• Rx is H, halogen, a straight-chain, branched or cyclic alkyl chain having 1 to 25 C atoms, in which, in addition, one or more non-adjacent C atoms are each optionally replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O— and in which one or more H atoms are each optionally replaced by fluorine, or an optionally substituted aryl having 6 to 40 C atoms, aryloxy having 6 to 40 C atoms, heteroaryl having 2 to 40 C atoms, or heteroaryloxy group having 2 to 40 C atoms, and
• Y7 is halogen, and
• r11 and r22 are each 0 or 1.