Liquid-crystalline media having homeotropic alignment

US11072742B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Graziano Archetti · Darmstadt, DE
• Izumi Saito · Darmstadt, DE
• Rocco Fortte · Frankfurt am Main, DE
• Edward Plummer · Frankfurt am Main, DE
• Dmitry USHAKOV · Kohlenbissen, DE
• Helmut Haensel · Heilbad Heiligenstadt, DE
• Melanie Klasen-Memmer · Heuchelheim, DE

Key dates

• Filing date: Dec 19, 2018
• Grant date: Jul 27, 2021
• Expiry date: Apr 1, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3408
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A liquid-crystalline media (LC media) containing a low-molecular-weight, non-polymer component, and a combination of self-alignment additives for vertical alignment of two or more of the specified kinds (formulae IA to IM). The combination of two or more self-alignment additives affect homeotropic (vertical) alignment of the LC media at a surface or the cell surfaces of a liquid-crystal display (LC display).