Liquid-crystalline medium and electro-optical display

US9873834B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Mark Goebel · Darmstadt, DE
• Elvira Montenegro · Weinheim, DE
• Atsutaka Manabe · Bensheim, DE

Key dates

• Filing date: Nov 11, 2011
• Grant date: Jan 23, 2018
• Expiry date: Sep 12, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/301
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a liquid-crystalline medium having a nematic phase and negative dielectric anisotropy which comprises and in which the parameters have the meanings indicated herein, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of the formula I for the stabilisation of a liquid-crystalline medium which comprises one or more compounds of formula II and one or more compounds selected from the compounds of formulae III-1 to III-4.