Liquid-crystalline medium and liquid-crystal display

US7838090B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Wittek · Darmstadt, DE
• Brigitte Schuler · Großostheim, DE
• Renate Graulich · Riedstadt, DE

Key dates

• Filing date: Jan 30, 2009
• Grant date: Nov 23, 2010
• Expiry date: Jan 30, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are dielectrically positive liquid-crystalline media containing a dielectrically positive component, component A, which contains one or more dielectrically positive compounds of formulae IA, IB and IC:and optionally a second dielectrically positive component, component B, containing one or more dielectrically positive compounds having a dielectric anisotropy of greater than 3, and optionally a dielectrically neutral component, component C, andliquid-crystal displays containing these media, especially active-matrix displays and in particular TN, IPS and FFS displays.