Liquid crystal medium

A liquid crystal medium comprising:

• one or more compounds of formula I:
• in which
• R11 and R12 identically or differently, denote H, a straight-chain alkyl or alkoxy group having 1 to 15 C atoms, a straight-chain alkenyl or alkenyloxy group having 2 to 15 C atoms, or a branched alkyl, alkoxy, alkenyl, or alkenyloxy group having 3 to 15 C atoms, wherein one or more CH2 groups are optionally replaced, independently of one another, by
• —CH═CH—, —C≡C—, —CF2O—, —OCF2—, —O—, —CO—O—, or —O—CO— in such a way that O atoms are not linked directly to one another, and in which one or more H atoms are optionally replaced by halogen;
• and
• L11, L12, L13, and L14 identically or differently, denote H, F, Cl, CH3, CF3, or CHF2, wherein at least one of L11, L12, L13, or L1 denotes F, Cl, CH3, CF3, or CHF2;
• and
• one or more compounds of formula VIII:
• in which
• R81 and R82 identically or differently, denote H, halogen, CN, SCN, a straight-chain alkyl or alkoxy group having 1 to 15 C atoms, a straight-chain alkenyl or alkenyloxy group having 2 to 15 C atoms, or a branched alkyl, alkoxy, alkenyl, or alkenyloxy group having 3 to 15 C atoms, where one or more CH2 groups are optionally replaced, independently of one another, by
• —C≡C—, —CF2O—, —OCF2—, —CH═CH—, —O—, —CO—O—, or —O—CO— in such a way that 0 atoms are not linked directly to one another, and in which one or more H atoms are optionally replaced by halogen;
• A0, A81, and A82 each, independently of one another, denote phenylene-1,4-diyl, in which one or two CH groups are optionally replaced by N and one or more H atoms are optionally replaced by halogen, CN, CH3, CHF2, CH2F, CF3, OCH3, OCHF2, or OCF3, cyclohexane-1,4-diyl, in which one or two non-adjacent CH2 groups are optionally replaced, independently of one another, by O and/or S and one or more H atoms are optionally replaced by F, cyclohexene-1,4-diyl, bicyclo[1.1.1]-pentane-1,3-diyl, bicyclo[2.2.2]octane-1,4-diyl, spiro[3.3]heptane-2,6-diyl, tetrahydropyran-2,5-diyl, or 1,3-dioxane-2,5-diyl;
• Z81 and Z82 each, independently of one another, denote —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CO—O—, —O—CO—, —C2H4—, —C2F4, —CF2CH2—, —CH2CF2—, —CFHCFH—, —CFHCH2—, —CH2CFH—, —CF2CFH—, —CFHCF2—, —CH═CH—, —CF═CH—, —CH═CF—, —CF═CF—, —C≡C—, or a single bond;
• n denotes 0, 1, 2, or 3, and
• m denotes 0, 1, 2, or 3.