Liquid-crystalline medium and liquid-crystal display

US8012370B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Wittek · Darmstadt, DE
• Brigitte Schuler · Großostheim, DE
• Volker Reiffenrath · Roßdorf, DE
• Atsutaka Manabe · Bensheim, DE
• Elisabeth Meyer · Langenselbold, DE
• Mark Goebel · Darmstadt, DE

Key dates

• Filing date: Sep 9, 2008
• Grant date: Sep 6, 2011
• Expiry date: Sep 9, 2028

Classification

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

Abstract

The present invention relates to dielectrically positive liquid-crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of the formula (I), in which the parameters have the meaning indicated in the specification, and optionally a second dielectrically positive component, component B, comprising 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 to active-matrix displays and in particular to TN, IPS, FFS and OCB displays, containing these media.