Liquid-crystal medium

US8715527B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Georg Luessem · Petershausen, DE
• Christian Hock · Mainaschaff, DE
• Brigitte Schuler · Großostheim, DE
• Eike Poetsch · Mühltal, DE

Key dates

• Filing date: Dec 23, 2008
• Grant date: May 6, 2014
• Expiry date: Apr 28, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/03
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula Iand one or more compounds selected from the compounds of the formulae IA and IBin which R1, R2, L1-4, X1 and X2 have the meanings indicated in claim 1.