Back to results
US 2021/0102122 A1Published application
Liquid crystal medium
AssigneeMerck Patent GmbH
InventorsMichael WITTEK, Dagmar KLASS
Life of this patent
Estimating the term…
Abstract
The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula CC in which the groups occurring have the meanings indicated in Claim 1, and to the use of the liquid-crystalline medium for electro-optical purposes, in particular in liquid-crystal light valves for lighting devices for vehicles, and to liquid-crystal light valves which comprise this medium and lighting devices for vehicles which contain liquid-crystal light valves of this type.
Claims18
Liquid-crystalline medium, characterised in that it comprises one or more compounds of the formula CC
- in which
- RC denotes an alkyl, alkenyl or alkoxy radical having 1 to 15 C atoms, in which a methylene group may be replaced by
- and in which in each case one or more H atoms may be replaced by F,
- XC denotes F, Cl, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical having up to 6 C atoms,
- ZC1, ZC2, independently of one another, denote —CH2CH2— or a single bond,
- LC1 and LC2, independently of one another, denote H or F,
- LC3 and LC4 independently of one another, denote H or methyl;
- and characterised in that the medium has a clearing point of 120° C. or more.
5 more elements
Dependencies are inferred from the claim text.