Liquid-crystal medium

A liquid-crystal medium having a positive dielectric anisotropy and comprising at least two or more compounds of formula I-2-a

• in which
• R11 and R12 identically or differently, denote an alkyl radical having 1 to 12 C atoms,
• at least two stabilizers selected from the group consisting of compounds of the formulae ST-a to ST-r
• in which
• RST denotes H, 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—, —OCF2—, —CH═CH—, -⋄-, -⋄⋄-, —O—, —CO—O— or —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 each be replaced by halogen,
• ZST denotes —CO—O—, —O—CO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CH2—, —CH2CH2—, —(CH2)4—, —CH═CH—CH2—, —C2F4—, —CH2CF2—, —CF2CH2—, —CF═CF—, —CH═CF—, —CF═CH—, —CH═CH—, —C═C— or a single bond,
• L1 and L2 each, independently of one another, denote F, Cl, CF3 or CHF2,
• p denotes 1 or 2, and
• q denotes 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10;
• and
• wherein the medium comprises at least one compound of formula II-B, at least one compound of formula II-C, and at least one compound of formula II-D, the at least one compound of formula II-B, at least one compound of formula II-C, and at least one compound of formula II-D being collectively present in a total amount of at least 15% by weight;
• and
• in which R2 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with 1 to 7 C atoms, or alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl with 2 to 7 C atoms, in which optionally one or more CH2 groups, independently of one another, may be replaced by
• one or more compounds of formula VI-1 in a total amount of at least 10% by weight:
• in which
• R61 and R62 independently of each other, denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with 1 to 7 C atoms, or alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl with 2 to 7 C atoms;
• and
• wherein the medium comprises one or more compounds of formula III-1:
• in which R3 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with 1 to 7 C atoms, or alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl with 2 to 7 C atoms, in which optionally one or more CH2 groups, independently of one another, may be replaced by
• one or more compounds of Formula Y2-10 in a total amount of at least 1% by weight to 15% by weight:
• in which alkyl and alkyl* each, independently of one another, denote a straight-chain alkyl radical having 1-6 C atoms.