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US 11,655,417 B2Granted
Liquid-crystal medium
AssigneeMerck Patent GmbH
InventorsSu-Young Kim, Chang-Suk Choi, Jeong-Hee Sung, Ming Chou Wu, Sang-Kyu Lee
Life of this patent
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Abstract
The invention relates to a liquid-crystalline medium, in particular based on a mixture of polar compounds, and to the use thereof for an active-matrix display, in particular based on the VA, SA-VA, IPS, PS-IPS, FFS, PS-FFS, UB-FFS or PS-UB-FFS effect.
Claims11
A liquid crystal (LC) medium comprising 0.1 to 2% by weight, based on the total weight of the LC medium, of only one compound of formula LB
- in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning:
- R1 alkyl, alkoxy, oxaalkyl or alkoxyalkyl having 1 to 9 C atoms or alkenyl or alkenyloxy having 2 to 9 C atoms, all of which are optionally fluorinated,
- L1, L2 F or Cl,
- X1 fluorinated alkyl or alkoxy with 1, 2 or 3 C atoms,
- Y1 O or S,
- said medium having negative dielectric anisotropy of −2.5 to −7.5 at 20° C. and 1 kHz.
3 more elements
Dependencies are inferred from the claim text.