Liquid-crystal medium containing monofluoroterphenyl compounds

US7390538B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Atsutaka Manabe · Bensheim, DE
• Erdal Durmaz · Darmstadt, DE
• Eike Poetsch · Mühltal, DE
• Volker Reiffenrath · Roßdorf, DE
• Michael Heckmeier · Bensheim, DE

Key dates

• Filing date: Jun 23, 2004
• Grant date: Jun 24, 2008
• Expiry date: Jun 23, 2024

Classification

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

Abstract

The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive or negative dielectric anisotropy which is characterised in that it comprises one or more compounds of the general formula Iin which —CH═CH—, —C≡C—, —CO—, —CO—O, —O—CO— or —O—CO—O— in such a way that 0 atoms are not linked directly to one another,to the use thereof for electro-optical purposes, and to electro-optical display devices which contain this medium.