Liquid-crystalline medium

A liquid-crystalline (LC) medium comprising:

• one or more compounds of Formula I
• in which the individual substituents have the following meanings:
• R1 and R2 each, independently of one another, denote a H atom, an alkyl or alkoxy group having 1 to 12 C atoms, or an alkenyl or alkenyloxy group having 2 to 12 C atoms, in which one or more non-adjacent CH2 groups are optionally substituted 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 one or more H atoms are optionally replaced by a halogen atom or a cycloalkyl or cycloalkoxy group having 3 to 12 C atoms, in which one or more H atoms are optionally replaced by a halogen atom;
• Y0 denotes a H atom, an alkyl group having 1 to 3 C atoms, or an alkenyl group having 2 to 3 C atoms, in which one or more non-adjacent CH2 groups are optionally substituted 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;
• A0, A1, A2 each, independently of one another, denote i) phenylene-1,4-diyl, in which, in addition, 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, ii) cyclohexane-1,4-diyl, in which, in addition, one or two non-adjacent CH2 groups are optionally replaced, independently of one another, by O or S and one or more H atoms are optionally replaced by F, iii) cyclohexene-1,4-diyl, iv) bicyclo[1.1.1]pentane-1,3-diyl, v) bicyclo[2.2.2]octane-1,4-diyl, vi) spiro[3.3]heptane-2,6-diyl, vii) tetrahydropyran-2,5-diyl, or viii) 1,3-dioxane-2,5-diyl;
• Z1 and Z2 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;
• k and l each, independently of one another, denote 0, 1, 2, or 3;
• and
• one or more compounds selected from Formulae T1 and T2:
• in which
• denotes
• denotes
• denotes
• R3 and R4 each, independently from one another, denote an alkyl or an alkoxy group having 1 to 12 C atoms or an alkenyl group having 2 to 12 C atoms, in which one or more CH2 groups are optionally substituted 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 one or more H atoms replaced by a halogen atom;
• L1-6 each, independently from one another, denote H or F;
• X0 denotes F, Cl, CN, SF5, SCN, NCS, a halogenated alkyl group or alkoxy group having 1 to 6 C atoms, or a halogenated alkenyl or alkenyloxy group having 2 to 6 C atoms;
• Y1-3 each, independently from one another, denote H, a straight-chain alkyl or alkoxy group having 1 to 6 C atoms, a branched alkyl or alkoxy group having $3 to 6 C atoms, or a cycloalkyl or cycloalkoxy group having 3 to 6 C atoms;
• and
• m and n each, independently of one another, denote 0 or 1.