Compounds and liquid-crystalline medium

US9920248B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Mark Goebel · Darmstadt, DE
• Rocco Fortte · Frankfurt am Main, DE
• Detlef Pauluth · Ober-Ramstadt, DE

Key dates

• Filing date: Feb 20, 2015
• Grant date: Mar 20, 2018
• Expiry date: Feb 20, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises one or more compounds of formula I, defined herein, for use in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula II and one or more compounds of the formulae III-1 to III-4, defined herein.