Liquid-crystal medium comprising polymerizable compounds

A liquid crystal medium comprising:

• one or more polymerizable compounds selected from formula IA-1 to IA-10, and one or more polymerizable compounds selected from formulae IB-D, IB-T, and IC-1 to IC-9
• wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
• P acrylate or methacrylate group,
• Sp a single bond, or —(CH2)2—, —(CH2)3—, or —(CH2)4—, or —O—(CH2)2—, —O—(CH2)3—, —O—CO—(CH2)2, or —CO—O—(CH)2— wherein the O atom or the CO group is attached to a benzene ring,
• L F, Cl, —CN, or straight chain alkyl having 1 to 25 C atoms, branched alkyl having 3 to 25 C atoms, or cyclic alkyl having 3 to 25 C atoms, wherein one or more non-adjacent CH2-groups are each optionally replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O— in such a manner that O- and/or S-atoms are not directly connected with each other, and wherein one or more H atoms are each optionally replaced by P, F or Cl,
• r1, r2, and r3 independently of each other 0, 1, 2, 3 or 4,
• r4 0, 1, 2 or 3,
• k 0 or 1,
• wherein in the compounds of formulae IC-1 to IC-9 at least one of the phenylene groups is monosubstituted with Lb,
• wherein the compounds of formulae IA-1 to IA-10 contain at least one spacer group Sp that is at least monosubstituted with La and/or at least one group L that denotes La,
• La —C(Raa)(Rbb)OH,
• Lb straight-chain or branched alkenyl with 3 to 7 C atoms, and
• Raa, Rbb straight-chain alkyl with 1 to 6 C atoms;
• and
• one or more compounds of formula II:
• wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
• R1 and R2 straight chain alkyl having 1 to 25 C atoms, branched alkyl having 3 to 25 C atoms, or cyclic alkyl having 3 to 25 C atoms, wherein one or more non-adjacent CH2-groups are each optionally replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, CR0═CR00—, —C≡C—,
• in such a manner that O- and/or S-atoms are not directly connected with each other, and wherein one or more H atoms are each optionally replaced by F or Cl,
• R0 and R00 H or alkyl with 1 to 12 C atoms,
• A1 and A2 a group selected from the following formulae:
• wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
• Z1 and Z2 —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CO—O—, —O—CO—, —C2F4—, —CF═CF—, —CH═CH—CH2O— or a single bond,
• L1, L2, L3 and L4 F, Cl, OCF3, CF3, CH3, CH2F or CHF2,
• Y H, F, Cl, CF3, CHF2 or CH3,
• LC CH3 or OCH3,
• a1 1 or 2,
• a2 0 or 1.