Liquid-crystalline medium

A liquid-crystalline medium containing no pleochroic dyes, comprising one or more compounds of Formula I

• in which the individual substituents, on each occurrence identically or differently, and each, independently of one another, have the following meaning:
• R0 an alkyl 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 may be substituted by a halogen atom;
• X0 a halogen atom, —CN, —SCN, —NCS or an alkyl or an alkoxy group having 1 to 6 C atoms or an alkenyl or an alkenyloxy group having 2 to 6 C atoms in which one or more H atoms is substituted by a halogen atom;
• L1 and L2 each, independently of one another, H, F or Cl, wherein L1 and L2 do not simultaneously denote H;
• Y0 H or CH3;
• one or more compounds of Formula LP2:
• in which:
• R0 denotes an alkyl or an alkoxy group having 1 to 12 C atoms or an alkenyl or an alkenyloxy group having 2 or 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 may be substituted by a cycloalkyl or a cycloalkoxy group having 3 to 12 C atoms;
• X0 a halogen atom, —CN, —SCN, —NCS or an alkyl or an alkoxy group having 1 to 6 C atoms or an alkenyl or an alkenyloxy group having 2 to 6 C atoms in which one or more H atoms is substituted by a halogen atom;
• Y0 denotes H or CH3;
• and
• n denotes 0 or 1,
• one or more antioxidants comprising one or more compounds of Formula ST:
• in which the individual substituents have the following meanings:
• X21 and X22 each, independently of one another, denote —O—, —CH2—, —CHR23— or —N—R23—;
• R21 and R22 each, independently of one another, denote a H atom or an alkyl- or alkoxy group having 1 to 12 C atoms, an alkenyl, alkynyl, alkenyloxy or alkoxyalkyl group having 2 to 12 C atoms or a cycloalkyl group having 3 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 may be substituted by a halogen atom or a cycloalkyl or a cycloalkoxy group having 3 to 12 C atoms, in which one or more H atoms may be substituted by a halogen atom;
• R23 denotes a H atom, an alkyl or alkoxy group having 1 to 10 C atoms;
• r denotes 0 or 1 and, optionally,
• one or more light stabilizers comprising one or more compounds of Formula H:
• in which
• R11 each, independently of one another, denote a H atom, F, an alkyl group having 1 to 20 C atoms, in which one or more CH2 groups are optionally substituted by —C≡C—, —CF2O—, —OCF2—, —CH≡CH—,
• —O—, —CO—O—, —O—CO—, —NR13—, —CO—NR13— or —NR13—CO— in such a way that O and N atoms are not linked directly to one another and in which one H atom or a plurality of H atoms may be substituted by F, OR13, N(R13)(R14) or R15;
• R12 each, independently of one another, denote a H atom, an alkyl group having 1 to 20 C atoms, in which one or more CH2 groups are optionally substituted by —C≡C—, —CF2O—, —OCF2—, —CH≡CH—,
• —O—, —CO—O—, —O—CO—, —NR13—, —CO—NR13— or —NR13—CO— in such a way that O atoms are not linked directly to one another, a hydrocarbon group which contains a cycloalkyl or alkylcycloalkyl group and in which one or more CH2 groups are optionally substituted by —C≡C—, —CF2O—, —OCF2—, —CH═CH—,
• —O—, —CO—O—, —O—CO—, —NR13—, —CO—NR13— or —NR13—CO— in such a way that O atoms are not linked directly to one another, and in which one H atom or a plurality of H atoms may be substituted by F, OR13, N(R13)(R14) or R15, or an aromatic or heteroaromatic hydrocarbon group, in which one H atom or a plurality of H atoms may be substituted by OR13, N(R13)(R14) or R15:
• R13, R14 each, independently of one another, denote an alkyl or acyl group
• and R15 having 1 to 10 C atoms or an aromatic hydrocarbon or carboxylic acid group having 6 to 12 C atoms in which one or more CH2 groups are optionally substituted by —C≡C—, —CF2O—, —OCF2—, —CH═CH—,
• —O—, —CO—O—, —O—CO—, —NR13—, —CO—NR13— or —NR13—CO— in such a way that O atoms are not linked directly to one another;
• R16 each, independently of one another, denote a H atom, an alkyl group or an alkoxy group having 1 to 10 C atoms in which one or more CH2 groups are optionally substituted by —C═C—, —CF2O—, —OCF2—, —CH═CH—,
• —O—, —CO—O—, —O—CO—, —NR13—, —CO—NR13— or —NR13—CO— in such a way that O atoms are not linked directly to one another, O-cycloalkyl group having 3 to 12 C atoms, O′ or OH;
• R17 each, independently of one another, a H atom, an alkyl group or an alkoxy group having 1 to 10 C atoms, or an alkylene group or a single bond, wherein R17 together with S11 may form a ring structure;
• S11 and S12 each, independently of one another, denote an alkylene group having 1 to 20 C atoms, in which one or more CH2 groups are optionally substituted by —C≡C—, —CF2O—, —OCF2—, —CH═CH—,
• —O—, —CO—O—, —O—CO—, —NR13—, —CO—NR13— or —NR13—CO— in such a way that O and N atoms are not linked directly to one another and in which one H atom or a plurality of H atoms may be substituted by F, OR13, N(R13)(R14) or R15, or a single bond;
• Y11 to Y14 each, independently of one another, denote methyl or ethyl;
• X11 C;
• Z11 to Z14 each, independently of one another, denote —O—, —(C═O)—, —O—(C═O)—, —(C═O)—O—, —O—(C═O)—O—, —(NR13), —NR13—(C═O)—, —(C═O)—NR13— or a single bond and if S11 is a single bond, both Z11 and Z12 do not simultaneously denote —O—;
• if S12 is a single bond, both Z13 and Z14 do not simultaneously denote —O—;
• and, if q denotes 0, both Z12 and Z13 do not simultaneously denote —O—;
• p 1 or 2;
• q 0 or 1;
• 0 (3−p);
• n an integer from 1 to 10;
• m an integer from 0 to 8;
• wherein
• n*p an integer from 1 to 10, and
• an organic moeity having (m+n) bonding sites.