Liquid-crystalline medium and liquid-crystal display
AssigneeMerck Patent GmbH
InventorsAtsutaka MANABE, Constanze BROCKE
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Abstract
The invention relates to a liquid-crystalline medium having a nematic phase comprising one or more compounds of formula B wherein the parameters have the meaning 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 use of the compounds of formula B for 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 having a nematic phase and a dielectric anisotropy (Δε) of 0.5 or more characterized in that it comprises one or more compounds of formula B
- in which
- n denotes 1 or 2,
- R1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, wherein one —CH2— group may be replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclopentenylene, preferably by cyclo-propylene or 1,3-cyclopentylene, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl, wherein one —CH2— group may be replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclopentenylene, preferably by cyclo-propylene or 1,3-cyclopentylene, and
- X1 denotes F. Cl. fluorinated alkyl. fluorinated alkenyl. fluorinated alkoxy or fluorinated alkenlyoxy.
Dependencies are inferred from the claim text.