Liquid-crystalline medium

US7449222B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Heckmeier · Bensheim, DE
• Melanie Klasen-Memmer · Heuchelheim, DE
• Georg Luessem · Petershausen, DE
• Eike Poetsch · Mühltal, DE
• Peer Kirsch · Darmstadt, DE
• Marcus Reuter · Darmstadt, DE
• Brigitte Schuler · Großostheim, DE
• Izumi Saito · Darmstadt, DE

Key dates

• Filing date: Dec 17, 2004
• Grant date: Nov 11, 2008
• Expiry date: Dec 17, 2024

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 of positive dielectric anisotropy, comprising at least one pyran compound of the formula Iand one or more compounds selected from the group consisting of the compounds C1 to C9in which