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US 2024/0247190 A1Published application
Liquid crystal medium
AssigneeMerck Patent GmbH
InventorsDagmar Klass, Carsten Fritzsch, Constanze Brocke
Life of this patent
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Abstract
A liquid crystal medium comprising one or more compounds of formula PT and one or more compounds of formula GF and/or UI in which the occurring groups and parameters have the meanings defined in claim 1. Also, high-frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas, e.g. phased array antennas.
Claims15
A liquid-crystal medium comprising one or more compounds of formula PT
- in which
- RP denotes H or straight-chain alkyl having 1 to 12 C atoms branched alkyl having 3 to 12 C atoms, straight-chain alkenyl having 2 to 12 C atoms, or branched alkenyl having 3 to 12 C atoms, in which one or more CH2-groups may be replaced by
- and where one or more non-adjacent CH2-groups may be replaced by O,
- denotes
- in which L1, L2 and L3, identically or differently, denote H, F, Cl or alkyl having 1 to 6 C atoms,
- t1 is 0 and t2 is 1, or
- t1 is 1 and t2 is 0;
- the medium further comprising one or more compounds selected from the group of compounds of the formulae GF and UI
- in which
- RG and RU have the meanings given for R.
7 more elements
Dependencies are inferred from the claim text.