Liquid crystalline medium and liquid crystal display

A liquid-crystal medium, comprising:

• a dielectrically positive component, component A, comprising one or more dielectrically positive compounds of the formula I
• in which
• R1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms,
• X1 denotes —CN, halogen, halogenated alkyl or halogenated alkoxy having 1 to 3 C atoms or halogenated alkenyl or halogenated alkenyloxy having 2 or 3 C atoms,
• Y1 denotes ═N—, ═(CH)— or ═(CF)—,
• independently of one another and, if
• the rings A11 and/or A12 are present more than once, also these independently of one another, denote
• Z11 to Z13, independently of one another and, if Z11 and/or Z13 are present more than once, also these independently of one another, denote —CH2CH2—, —CF2CF2—, —COO—, trans-CH═CH—, trans-CF═CF—, —CF2O—, —CH2O— or a single bond,
• L11 to L14, independently of one another, denote H or F, and
• j and k, independently of one another, denote 0, 1 or 2, but where (j+k) denotes 0, 1 or 2;
• a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds, selected from the group of the compounds of the formulae II and III:
• in which
• R2 and R3, independently of one another, denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms,
• independently of one another, denote
• L21, L22, L31 and L32, independently of one another, denote H or F,
• X2 and X3, independently of one another, denote halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms,
• Z3 denotes —CH2CH2—, —CF2CF2—, —COO—, trans-CH═CH—, trans-CF═CF—, —CH2O— or a single bond, and
• l, m, n and o, independently of one another, denote 0 or 1;
• and
• a dielectrically neutral component, component D, comprising one or more dielectrically neutral compounds of the formula VI
• in which
• R61 and R62, independently of one another, have the meaning indicated for R2 under formula II,
• and if it occurs twice, independently of one another on each occurrence, denotes
• Z61 and Z62, independently of one another and, if Z61 is present twice, also these independently of one another, denote
• —CH2CH2—, —COO—, trans-CH═CH—, trans-CF═CF—,
• —CH2O—, —CF2O— or a single bond, and
• r denotes 1 or 2.