Liquid crystalline medium

US7001646B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Heckmeier · Bensheim, DE
• Brigitte Schuler · Großostheim, DE
• Achim Goetz · Zwingenberg, DE
• Peer Kirsch · Darmstadt, DE
• Eike Poetsch · Mühltal, DE
• Detlef Pauluth · Ober-Ramstadt, DE

Key dates

• Filing date: Dec 18, 2000
• Grant date: Feb 21, 2006
• Expiry date: Mar 13, 2021

Classification

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

Abstract

The invention relates to a liquid crystalline medium based on a mixture of polar compounds with positive dielectric anisotropy, characterized in that said medium contains one or more alkenyl compounds of the formula (I) and one or more compounds of the formula (IA) wherein R, R1, R2, ring A and ring B, L1, L2; L3; L4; X, Z1, Z2, y and z have the meanings cited in Claim 1.