1,4-Di-(trans-4-cyclohexyl)benzene derivatives and their use in liquid crystal media and liquid crystal devices

US7041347B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Harald Hirschmann · Darmstadt, DE
• Martina Weidner · Munster, DE
• Sven Schupfer · Aschaffenburg, DE
• Renate Graulich · Riedstadt, DE
• Mark John Goulding · Woodside, GB
• Martin Heeney · Southampton, GB
• Warren Duffy · Southampton, GB

Key dates

• Filing date: Feb 13, 2004
• Grant date: May 9, 2006
• Expiry date: Apr 27, 2024

Classification

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

Abstract

Liquid-crystalline media comprising one or more compounds of the formula I in which Ra, Rb, L and r are as defined herein, are suitable for use in, for example, TN and STN liquid crystal displays