Liquid crystalline medium and liquid crystal display

A liquid crystal medium, comprising

• one or more compounds of formula I
• wherein
• R1 is alkyl, alkoxy, fluorinated, alkyl or fluorinated alkoxy, alkenyl, alkenyloxy, alkoxyalkyl, fluorinated alkenyl or fluorinated alkenyloxy,
• L11 to L13 are independently of each other H or F, and
• X1 is F or Cl,
• one or more compounds selected from the group consisting of compounds of formulae II and III
• wherein
• R2 and R3, independently of each other, are alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with 1 to 7 C-atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl with 2 to 7 C-atoms,
• are independently of each other
• L21, L22, L31 and L32, are independently of each other H or F,
• X2 and X3 are independently of each other halogen, halogenated alkyl or alkoxy with 1 to 3 C-atoms or halogenated alkenyl or alkenyloxy with 2 or 3 C-atoms,
• Z3 is —CH2CH2—, —CF2CF2—, —COO—, trans- —CH═CH—, trans- —CF═CF—, —CH2O— or a single bond, and
• l, m, n and o are independently of each other 0 or 1, and
• one or more compounds selected from the group consisting of cmpounds of formulae IV and V
• wherein
• R41 to R52 independently of each other have the meaning given for R2 under formula II above, and
• independently of each other and in case
• is present twice, also these independently of each other, are
• independently of each other and in case
• is present twice, also these independently of each other, are
• Z41 to Z52 independently of each other, and in case Z41 and/or Z51 is/are present twice, also these independently of each other, are —CH2CH2—, —COO—, trans- —CH═CH—, trans- —CF═CF—, —CH2O—, —CF2O—, —C≡C— or a single bond, and
• p and q are independently of each other 0, 1 or 2,
• with the proviso that the medium comprises
• one or more compounds of formula III, wherein n and o both are 1 and all rings are 1,4-phenylene, which independently of each other optionally are fluorinated once or twice,
• and/or
• one or more compounds of formula V, wherein q is 2.