Compounds for the homeotropic alignment of liquid-crystalline media

US10538704B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Graziano Archetti · Darmstadt, DE
• Edward Plummer · Frankfurt am Main, DE
• Helmut Haensel · Heilbad Heiligenstadt, DE
• Rocco Fortte · Frankfurt am Main, DE
• Timo Uebel · Darmstadt, DE

Key dates

• Filing date: Nov 20, 2017
• Grant date: Jan 21, 2020
• Expiry date: Jan 6, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/133742
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are liquid-crystalline media (LC media) comprising a low-molecular-weight component and a polymerisable component. The polymerisable component contains self-aligning, polymerisable meso-gens (polymerisable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). Disclosed are also LC displays having homeotropic alignment of the LC medium without alignment layers. Further disclosed are the structures for polymerisable self-alignment additives.