Liquid-crystalline medium and liquid-crystal display

US7964253B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Wittek · Darmstadt, DE
• Brigitte Schuler · Großostheim, DE
• Lars Lietzau · Darmstadt, DE

Key dates

• Filing date: Apr 28, 2010
• Grant date: Jun 21, 2011
• Expiry date: Apr 28, 2030

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, containing one or more dielectrically positive compounds of formula Iand 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, and to liquid-crystal displays, especially active-matrix displays and in particular TN, OCB, IPS and FFS displays, containing these media.