Liquid crystalline compounds

US6780477B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Peer Kirsch · Darmstadt, DE
• Detlef Pauluth · Ober-Ramstadt, DE
• Joachim Krause · Dieburg, DE
• Michael Heckmeier · Bensheim, DE
• Georg Lüssem · Ober-Ramstadt, DE
• Dagmar Klement · Groß-Zimmern, DE

Key dates

• Filing date: Jun 12, 2003
• Grant date: Aug 24, 2004
• Expiry date: Jun 12, 2023

Classification

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

Abstract

The invention relates to liquid-crystalline compounds of the formula I in whichR1, R2, A1, A2, A3, A4, Z1, Z2, a, b and c are as defined in claim 1, and to liquid-crystalline media comprising at least compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.