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US 2015/0315472 A1Published application
Liquid-crystalline medium
AssigneeMerck Patent GmbH
InventorsHarald HIRSCHMANN, Andreas POHLE, Markus CZANTA, Christian SCHOENEFELD, Elvira MONTENEGRO, Volker REIFFENRATH
Life of this patent
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Abstract
The invention relates to compounds of the formula I and to a liquid-crystalline medium which comprises one or more compounds of the formula I, in which R1, X1, X, Y1 and Y2 have the meanings indicated in Claim 1, and to the use thereof for electro-optical purposes, in particular for shutter glasses, 3D applications, in TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and PS-VA-IPS displays.
Claims18
Liquid-crystalline medium, characterised in that it comprises one or more compounds of the formula I,
- in which
- R1 denotes a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
- X1 denotes F, Cl, CN, SF5, SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical, each having up to 6 C atoms,
- X C—H or N, and
- Y1 and Y2 each, independently of one another, denote H or F.
3 more elements
Compounds of the formula I
- in which
- R1 denotes a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
- X1 denotes F, Cl, CN, SF5, SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical, each having up to 6 C atoms,
- X denotes C—H or N, and
- Y1 and Y2 each, independently of one another, denote H or F.
3 more elements
Dependencies are inferred from the claim text.