15-02-2018 дата публикации
Номер: US20180044591A1
The present invention relates to a liquid crystal (LC) medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it. 2. The LC medium according to claim 1 , comprisinga polymerizable component A) comprising one or more polymerizable compounds, anda liquid-crystalline component B) comprising one or more mesogenic or liquid-crystalline compounds,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein component B) comprises one or more compounds of formula B and one or more compounds of formula Q as defined in .'}4. The LC medium according to claim 1 , wherein the proportion of compounds of formula B is ≧3%.6. The LC medium according to claim 1 , wherein the proportion of compounds of formula Q is from 0.05 to 2%.7. The LC medium according to claim 1 , wherein the polymerizable compounds are selected of formula I{'br': None, 'sup': a', '1', 'b', '2', 'b, 'sub': 'm', 'R—B—(Z—B)—R\u2003\u2003I'}in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning:{'sup': a', 'b', '0', '00', '00', '1', '2', 'a', 'b, 'sub': 2', '5', '2, 'Rand RP, P-Sp-, H, F, Cl, Br, I, —CN, —NO, —NCO, —NCS, —OCN, —SCN, SFor straight-chain or branched alkyl having 1 to 25 C atoms, in which, in addition, one or more non-adjacent CHgroups may each be replaced, independently of one another, by —C(R)═C(R)—, —C≡C—, —N(R)—, —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, P or P-Sp-, where, if Band/or Bcontain a saturated C atom, Rand/or Rmay also denote a radical which is spiro-linked to this saturated C atom,'}{'sup': a ...
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