Liquid-crystalline medium and liquid-crystal display

US10738243B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Junge · Munich, DE
• Volker Reiffenrath · Roßdorf, DE
• Elvira Montenegro · Weinheim, DE
• Michael Wittek · Darmstadt, DE
• Markus Czanta · Darmstadt, DE

Key dates

• Filing date: Jul 5, 2016
• Grant date: Aug 11, 2020
• Expiry date: Jul 5, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3422
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I, and one or more compounds selected from the group of the compounds of the formulae II and III and/or IV, in which the parameters have the respective meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds, and to liquid-crystal displays, especially active-matrix displays and in particular TN, IPS and FFS displays, containing these media.