Liquid-crystalline medium

A liquid-crystalline medium comprising:

• (a) one or more compounds of formula I1,
• in which
• alkenyl denotes CH2=CH—CH2—CH2—, and
• L1 and L2 each, independently of one another, denote F or Cl,
• wherein the amount of compounds of formula I1 in the medium is ≥5%;
• (b) one or more compounds selected from the compounds of formulae I 3 and one or more compounds selected from the compounds of formulae I4,
• in which
• alkenyl denotes CH2=CH—, and
• L1 and L2 each, independently of one another, denote F or Cl,
• wherein the amount of compounds of formula I13 in the medium is ≥5% and the amount of compounds of formula I4 in the medium is ≥6%;
• (c) optionally one or more compounds selected from the compounds of formula I2,
• in which
• alkenyl denotes CH2=CH—, and
• L1 and L2 each, independently of one another, denote F or Cl;
• the compound of formula CC-n-V
• wherein n is 3, in an amount of ≥30% by weight of based on the mixture as a whole, and
• (d) one or more compounds selected from formulae L-1 to L-11, EY, and T-1 to T-21:
• in which
• R, R1 and R2 each, independently of one another, denote H, an alkyl or alkenyl radical having up to 15 C atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may each be replaced by —O—, —S—,
• —C≡—, —CF2 O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
• (O) denotes —O— or a single bond,
• alkyl denotes an alkyl radical having 1-6 C atoms, and
• s denotes 1 or 2;
• in which
• R1 denotes H, an alkyl or alkenyl radical having up to 15 C atoms which is un-substituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may each be replaced by —O—, —S—,
• —C≡C—, —CF2O—, —OCF2—, —OC—O—or —O—CO —in such a way that O atoms are not linked directly to one another,
• L1 and L2 are each independently F or Cl, and
• R1* denotes H, an alkyl or alkenyl radical having up to 15 C atoms which is un-substituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may each be replaced by —O—, —S—,
• —C≡C—, —CF2O—, —OCF2—, —OC—O—or —O—CO—in such a way that O atoms are not linked directly to one another;
• in which
• R denotes a straight-chain alkyl or alkoxy radical having 1-7 C atoms,
• (O) denotes —O— or a single bond,
• m denotes 1-6, and
• n denotes 0, 1, 2, 3 or 4.