Patent ID: 8313669

Claim:
A LC medium comprising a polymerisable component A) comprising one or more polymerisable compounds, and a liquid-crystalline component B) comprising one or more low-molecular-weight compounds, wherein component A) comprises one or more polymerisable compounds of formula I R a -(A 1 -Z 1 ) m1 -(A 2 -Z 2 ) m2 -(A 3 ) m3 -R b I in which the individual radicals have the following meanings: R a and R b each, independently of one another, denote P-Sp-, H, halogen, SF 5 , NO 2 , a carbon group or hydrocarbon group, where at least one of the radicals R a and R b denotes P-Sp-, P on each occurrence, identically or differently, denotes a polymerisable group, Sp on each occurrence, identically or differently, denotes a spacer group or a single bond, A 1 and A 3 each, independently of one another, denote 1,3-phenylene, naphthalene-1,3-diyl, naphthalene-1,6-diyl, naphthalene-2,5-diyl or naphthalene-2,7-diyl, where, in addition, one or more CH groups in these radicals may be replaced by N, cyclohexane-1,3-diyl, in which, in addition, one or more non-adjacent CH 2 groups may be replaced by O and/or S, 1,3-cyclohexenylene, piperidine-2,4-diyl, piperidine-2,6-diyl, decahydronaphthalene-2,7-diyl, 1,2,3,4-tetrahydronaphthalene-2,7-diyl or indane-2,4-diyl, where all these radicals may be unsubstituted or mono- or polysubstituted by L, and where, in the case where m1=m3=1, one of the radicals A 1 and A 3 may also have one of the meanings indicated for A 2 , A 2 on each occurrence, identically or differently, denotes 1,4-phenylene, naphthalene-1,4-diyl or naphthalene-2,6-diyl, where, in addition, one or more CH groups in these radicals may be replaced by N, cyclohexane-1,4-diyl, in which, in addition, one or more non-adjacent CH 2 groups may be replaced by O and/or S, 1,4-cyclohexenylene, bicyclo[1.1.1]pentane-1,3-diyl, bicyclo[2.2.2]octane-1,4-diyl, spiro[3.3]heptane-2,6-diyl, piperidine-2,5-diyl, decahydronaphthalene-2,6-diyl, 1,2,3,4-tetra-hydronaphthalene-2,6-diyl, indane-2,5-diyl, thiophene-2,5-diyl, fluorene-2,7-diyl or octahydro-4,7-methanoindane-2,5-diyl, where all these radicals may be unsubstituted or mono- or polysubstituted by L, or can have one of the meanings indicated for A 1 , L denotes P-Sp-, H, OH, halogen, SF 5 , NO 2 , a carbon group or hydrocarbon group, Z 1,2 each, independently of one another and on each occurrence identically or differently, denote —O—, —S—, —CO—, —CO—O—, —OCO—, —O—CO—O—, —OCH 2 —, —CH 2 O—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —(CH 2 ) n1 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —(CF 2 ) n1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, —OCO—CH═CH—, CR 0 R 00 or a single bond, R 0 and R 00 each, independently of one another, denote H or alkyl having 1 to 12 C atoms, m1 and m3 each, independently of one another, denote 0 or 1, where m1+m3>0, m2 denotes 0, 1, 2 or 3, n1 denotes 1, 2, 3 or 4.