Liquid-crystalline media

A liquid-crystalline medium comprising:

• (i) at least two compounds of the formula I,
• in which
• R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
• —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen,
• Z1 denotes a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCHO—,
• L1 and L2 each, independently of one another, denote F, Cl, CF3 or CHF2;
• (ii) at least one stabilizer and/or at least one reactive mesogen;
• and
• (iii) at least two or more compounds of the formulae IIA, IIB, or IIC, wherein at least one the compounds of formulae IIA, IIB, or IIC is a compound of formula IIB:
• in which
• R2A, R2B and R2C each, independently of one another, denote H, an alkyl 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 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,
• L1-4 each, independently of one another, denote F or Cl,
• Z2 and Z2′ each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O—,
• p denotes 1 or 2,
• q denotes 1 or 2, and
• v denotes 1 to 6.