Liquid-crystalline medium and liquid-crystal display comprising the same
AssigneeMerck Patent GmbH
InventorsAtsutaka Manabe, Constanze Brocke, Brigitte Schuler, Ramin Tavakoli
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 S in which denotes and 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 use of the compounds of formula S for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.
Claims20
A liquid-crystalline medium comprising one or more compounds of formula S
- in which
- denotes
- denotes, in each occurrence independently of each other,
- n denotes 1 or 2,
- RS denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, wherein one —CH2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, or 1,3-cyclo-pentenylene, or denotes alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, wherein one —CH2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, or 1,3-cyclo-pentenylene, and
- XS denotes F, Cl, CN, NCS, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy.
A compound of formula S
- in which
- denotes
- denotes, in each occurrence independently of each other,
- n denotes 1 or 2,
- RS denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, wherein one —CH2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, or 1,3-cyclo-pentenylene, or denotes alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, wherein one —CH2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, or 1,3-cyclo-pentenylene, and
- XS denotes F, Cl, CN, NCS fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy.
Dependencies are inferred from the claim text.