Liquid-crystalline medium

An electro-optical display, wherein the electro-optical display:

• is a polymer-stabilized, vertically-aligned (PS-VA) display or polymer-sustained, vertically-aligned (PSA-VA) display,
• comprises a layer of liquid-crystalline medium and at least one transparent electrode,
• wherein the liquid-crystalline medium has negative dielectric anisotropy,
• wherein the liquid-crystalline medium comprises a polymerizable or polymerized mesogenic compound and
• wherein the liquid-crystalline medium comprises a mixture of polar compounds, including:
• at least one compound of the formula I,
• in which
• R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals are optionally replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
• —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms are optionally replaced by halogen,
• Z1 denotes —CH2O— or —OCH2—
• a denotes 0 or 1,
• b denotes 1,
• each denote
• and
• L1 and L2 each denote F;
• and
• one or more compounds selected from the compounds of formula IIB,
• in which
• R2B denotes H, an alkyl radical having up to 15 C atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may be replaced by —O—, —S—,
• —C≡C—, —CF2O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
• L3 and L4 each denote F,
• Z2 and Z2′ each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O—,
• q denotes 0 or 1,
• (O) denotes an optional —O—, and
• v denotes 1 to 6.