Liquid crystalline medium and liquid crystal display

US7682671B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Markus Czanta · Darmstadt, DE
• Michael Wittek · Darmstadt, DE
• Lars Lietzau · Darmstadt, DE
• Renate Bender · Darmstadt, DE
• Brigitte Schuler · Großostheim, DE

Key dates

• Filing date: Dec 19, 2007
• Grant date: Mar 23, 2010
• Expiry date: Apr 20, 2028

Classification

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

Abstract

The instant invention relates to dielectrically positive liquid crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of formula Iwherein the parameters have the meaning given in the specification, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3 and optionally a dielectric neutral component, component C, as well as to liquid crystal displays comprising these media, especially to active matrix displays and in particular to TN and to IPS displays.