Liquid-crystal medium, and electro-optical display containing same

A nematic liquid-crystal medium, wherein said medium comprises

• a) a dielectrically negative liquid-crystalline component, component A, which comprises one or more dielectrically negative compound(s) of the formula I
• in which
• R11 and R12 are each, independently of one another, alkyl having from 1 to 7 carbon atoms, alkoxy having from 1 to 7 carbon atoms or alkoxyalkyl, alkenyl or alkenyloxy having from 2 to 7 carbon atoms,
• one of
• Z11 and Z12 are each, independently of one another, —CH2—CH2—, —CH2—CF2—, —CF2—CH2—, —OCH2—, —CH2O—, —OCF2—, —CF2O— or a single bond, and
• n is 1,
• where one or more H atoms in the third phenyl ring may optionally be replaced by F atoms if
• and
• b) a further dielectrically negative liquid-crystalline component, component B, which is different from component A.