Liquid-crystal display

A polymerizable compound, of the following sub-formulae:

• in which R is
• CH2═CW1—OCO—, CH2═CW1—CO—,
• CW1═CH—CO—(O)k3—, CW1═CH—CO—NH—, CH2═CW1—CO—NH—, CH3—CH═CH—O—, (CH2═CH)2CH—OCO—, (CH2═CH—CH2)2CH—OCO—, (CH2═CH)2CH—O—, (CH2═CH—CH2)2N—, (CH2═CH—CH2)2N—CO—, HO—CW2W3—, HS—CW2W3—, HW2N—, HO—CW2W3—NH—, CH2═CW1—CO—NH—, CH2═CH—(COO)k1-Phe-(O)k2—, CH2═CH—(CO)k1-Phe-(O)k2—, Phe-CH═CH—, HOOC—, OCN— or W4W5W6Si—, in which W1 denotes H, F, Cl, CN, CF3, phenyl or alkyl having 1 to 5 C atoms, W2 and W3 each, independently of one another, denote H or alkyl having 1 to 5 C atoms, W4, W5 and W6 each, independently of one another, denote Cl, oxaalkyl or oxacarbonylalkyl having 1 to 5 C atoms, W7 and W8 each, independently of one another, denote H, Cl or alkyl having 1 to 5 C atoms, Phe denotes 1,4-phenylene, which is optionally substituted by one or more radicals L, and k1, k2 and k3 each, independently of one another, denote 0 or 1,
• L, is H, halogen, SF5, NO2, a carbon group or hydrocarbon group which contains a polymerizable group,
• r is 0, 1, 2, 3 or 4, and s is 0, 1, 2 or 3, and
• P is CH2═CH—COO—, CH2═C(CH3)—COO—, CH2═CH—, CH2═CH—O—, (CH2═CH2CH—OCO—, (CH2═CH)2CH—O—,

A LC medium comprising a liquid-crystalline component A) that is one or more compounds of the formula

• in which L1 and L2 each, independently of one another, denote F or Cl,
• R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which, in addition, one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
• a denotes 0 or 1,
• L3 and L4 each, independently of one another, denote H, F or Cl,
• in which the individual radicals have the following meanings:
• b denotes 0 or 1,
• L3 and L4 each, independently of one another, denote H, F or Cl,
• R3 denotes alkenyl having 2 to 9 C atoms,
• R4 denotes alkyl having 1 to 12 C atoms, in which, in addition, one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, or, if a=0 and the ring A denotes cyclohexylene, R4 also denotes R1 or
• in which
• R5 and R6, independently of one another, have one of the meanings indicated for R1 in formula II,
• and
• g denotes 0 or 1,
• a polymerizable component B) comprising one or more polymerizable compounds of Formula I1
• Rc-A1-(Z1-A2)m-Rd I1
• in which
• A1 and A2 each, independently of one another, denote 1,4-phenylene or naphthalene-2,6-diyl, in which, in addition, one or more, CH groups may be replaced by N, and in which, in addition, one or more H atoms may be replaced by L, where the compounds contain at least one radical Al or A2, in which one or more, CH groups have been replaced by N,
• L, is H, halogen, SF5, NO2, a carbon group or hydrocarbon group, where the compounds contain at least one radical L, Ra and Rb which contains a polymerizable group,
• Z1 on each occurrence, identically or differently, denotes —O—, —S—, —CO—, —CO—O—, —OCO—, —O—CO—O—, —OCH2—, —CH2O—, —SCH2—, —CH2S—, —CF2O—, —OCF2—, —CF2S—, —SCF2—, —CH2CH2—, —CF2CH2—, —CH2CF2—, —CF2CF2—, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, —OCO—CH═CH—, CR0R00 or a single bond,
• R0 and R00 each independently denote H or C1-12-alkyl,
• Sp denotes a spacer group or a single bond,
• m is 0-4,
• Rc denotes P or P-Sp-, and
• Rd denotes P, P-Sp-, H, L, or straight-chain alkyl having 1 to 25 C atoms, in which, in addition, one or more non-adjacent CH2 groups may each be replaced, independently of one another, by —CH═CH—, —C≡C—, —N(Rx)—, —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O— in such a way that O and/or S atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by F, Cl, Br, I, CN or P-Sp-,
• in which at least one of the radicals Rc and Rd denotes P, and/or at least one of the rings is mono- or polysubstituted by F,
• Rx denotes P-Sp-, H, halogen, straight-chain, branched or cyclic alkyl having 1 to 25 C atoms, in which, in addition, one or more non-adjacent CH2 groups may be replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O— in such a way that O and/or S atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by F, Cl or P-Sp-, or an optionally substituted aryl, aryloxy, heteroaryl or heteroaryloxy group having 5 to 20 C atoms,
• and
• P is CH2═CW1—COO—, CH2═CW1—CO—,
• CW1═CH—CO—(O)k3—, CW1═CH—CO—NH—, CH2═CW1—CO—NH—, CH3—CH═CH—O—, (CH2═CH)2CH—OCO—, (CH2═CH—CH2)2CH—OCO—, (CH2═CH)2CH—O—, (CH2═CH—CH2)2N—, (CH2═CH—CH2)2N—CO—, HO-CW2W3—, HS—CW2W3—, HW2N—, HO—CW2W3—NH—, CH2═CW1—CO—NH—, CH2═CH—(COO)k1-Phe-(O)k2—, CH2═CH—(CO)k1-Phe-(O)k2—, Phe-CH═CH—, HOOC—, OCN— or W4W5W6Si—, in which W1 denotes H, F, Cl, CN, CF3, phenyl or alkyl having 1 to 5 C atoms, W2 and W3 each, independently of one another, denote H or alkyl having 1 to 5 C atoms, W4, W5 and W6 each, independently of one another, denote Cl, oxaalkyl or oxacarbonylalkyl having 1 to 5 C atoms, W7 and W8 each, independently of one another, denote H, Cl or alkyl having 1 to 5 C atoms, Phe denotes 1,4-phenylene, which is optionally substituted by one or more radicals L as defined above, and k1, k2 and k3 each, independently of one another, denote 0 or 1.