Liquid-crystalline medium and liquid-crystal display comprising the same

A liquid-crystalline medium which comprises:

• one or more compounds of formula T
• in which
• RS1 and RS2, independently of one another, denote alkyl or alkoxy, having 1 to 7 C atoms, wherein one —CH2— group is optionally replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene or 1,3-cyclo-pentenylene, or alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, wherein one —CH2— group is optionally replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene,
• alternatively RS1 denotes fluorinated alkyl or fluorinated alkoxy, having 1 to 7 C atoms,
• alternatively, RS2 denotes XS, where
• XS1 denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups having 1 to 4 C atoms, and
• YS1 and YS2, independently of one another, denote H or F, and
• wherein one or more of the aromatic rings are optionally substituted by an alkyl group;
• and
• one or more compounds of formula L
• in which
• RL1 and RL2, independently of one another, denote alkyl or alkoxy, having 1 to 7 C atoms, wherein one —CH2— group are optionally replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, or alkenyl, alkenyloxy or alkoxyalkyl of 2 to 7 C atoms wherein one —CH2— group may be replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene or 1,3-cyclo-pentenylene,
• alternatively RL1 denotes fluorinated alkyl or fluorinated alkoxy, having 1 to 7 C atoms, or fluorinated alkenyl having 2 to 7 C atoms,
• alternatively, RL2 denotes XL, where
• XL denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups having 1 to 4, and
• YL1 and YL2, independently of one another, denote H or F, and
• wherein the aromatic ring is optionally further substituted by an alkyl group.