Liquid-crystalline medium, characterised in that it comprises a) one or more compounds of the formula ST-1, in which G denotes a divalent aliphatic or cycloaliphatic radical having 1 to 20 C atoms; in a total concentration in the range of from 1500 ppm to 3000 ppm and b) one or more compounds of the formula ST-2 in which R S1 denotes H, an alkyl, alkenyl or alkoxy radical having up to 15 C atoms, in which one or more H atoms may be replaced by halogen, R S2 denotes H, alkyl or alkenyl or alkoxy having up to 7 C atoms, in which one or more H atoms may be replaced by halogen, r is 0 or 1; in a total concentration of 300 ppm or more, and c) one or more compounds of the formula RV in which R 21 denotes an unsubstituted alkyl radical having 1 to 7 C atoms or an unsubstituted alkenyl radical having 2 to 7 C atoms, and R 22 denotes an unsubstituted alkenyl radical having 2 to 7 C atoms, and d) one or more compounds selected from the group of compounds of the formula IA and IB, in which R A and R B each, independently of one another, denote a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH 2 groups in these radicals may each be replaced, independently of one another, by -C≡C-, -CF 2 O-, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, X A and X B each, independently of one another, denote F, Cl, CN, SF 5, SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical, each having up to 6 C atoms, and Y 1-13 each, independently of one another, denote H or F. a) one or more compounds of the formula ST-1, in which G denotes a divalent aliphatic or cycloaliphatic radical having 1 to 20 C atoms; in a total concentration in the range of from 1500 ppm to 3000 ppm and G denotes a divalent aliphatic or cycloaliphatic radical having 1 to 20 C atoms; b) one or more compounds of the formula ST-2 in which R S1 denotes H, an alkyl, alkenyl or alkoxy radical having up to 15 C atoms, in which one or more H atoms may be replaced by halogen, R S2 denotes H, alkyl or alkenyl or alkoxy having up to 7 C atoms, in which one or more H atoms may be replaced by halogen, r is 0 or 1; in a total concentration of 300 ppm or more, and R S1 denotes H, an alkyl, alkenyl or alkoxy radical having up to 15 C atoms, in which one or more H atoms may be replaced by halogen, R S2 denotes H, alkyl or alkenyl or alkoxy having up to 7 C atoms, in which one or more H atoms may be replaced by halogen, r is 0 or 1; c) one or more compounds of the formula RV in which R 21 denotes an unsubstituted alkyl radical having 1 to 7 C atoms or an unsubstituted alkenyl radical having 2 to 7 C atoms, and R 22 denotes an unsubstituted alkenyl radical having 2 to 7 C atoms, and R 21 denotes an unsubstituted alkyl radical having 1 to 7 C atoms or an unsubstituted alkenyl radical having 2 to 7 C atoms, and R 22 denotes an unsubstituted alkenyl radical having 2 to 7 C atoms, d) one or more compounds selected from the group of compounds of the formula IA and IB, in which R A and R B each, independently of one another, denote a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH 2 groups in these radicals may each be replaced, independently of one another, by -C≡C-, -CF 2 O-, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, X A and X B each, independently of one another, denote F, Cl, CN, SF 5, SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical, each having up to 6 C atoms, and Y 1-13 each, independently of one another, denote H or F. R A and R B each, independently of one another, denote a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH 2 groups in these radicals may each be replaced, independently of one another, by -C≡C-, -CF 2 O-, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, X A and X B each, independently of one another, denote F, Cl, CN, SF 5, SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical, each having up to 6 C atoms, and Y 1-13 each, independently of one another, denote H or F.