Liquid-crystalline medium

US5993692A · kind A · utility

Assignee

• Merck Patentgesellschaft · DE

Inventors

• Kazuaki Tarumi · Seeheim-Jugenheim, DE
• Brigitte Schuler · Großostheim, DE
• Michael Schwarz · Weiterstadt, DE
• Peter Mackert · Egelsbach, DE

Key dates

• Filing date: Mar 10, 1998
• Grant date: Nov 30, 1999
• Expiry date: Mar 10, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/3003
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I ##STR1## and one or more compounds of the formula I.sup.* ##STR2## in which R, Y, L and s are as defined herein.