Electro-optical display element

US4886344A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Bernhard Scheuble · Alsbach, DE
• Gunter Baur · Glückstadt, DE
• Waltraud Fehrenbach · Hersbruck, DE

Key dates

• Filing date: Aug 19, 1988
• Grant date: Dec 12, 1989
• Expiry date: Aug 19, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/42
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A suitable choice of the liquid crystal parameters K.sub.3 /K.sub.1 and .DELTA.E/E.sub.1 makes it possible in electrooptical display elements to obtain both a minimum dependence on the angle of observation and, simultaneously, a steep electro-optical characteristic when operated in the first transmission minimum.