Liquid-crystalline medium and liquid-crystal display comprising the same
AssigneeMerck Patent GmbH
InventorsAchim GOETZ, Constanze BROCKE
Life of this patent
Estimating the term…
Abstract
The invention relates to a liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of formula D in which the parameters have the meanings given in the text, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the compounds of formula T and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.
Claims15
Liquid-crystalline medium characterized in that it comprises one or more compounds of formula D
- R1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy preferably having 1 to 7 C atoms, wherein one —CH2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl preferably having 2 to 7 C atoms, wherein one —CH2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, and
- X denotes F, Cl, CN, NCS fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, preferably F, CF3 or OCF3.
(canceled)
Dependencies are inferred from the claim text.