Double layer liquid crystal device and process of manufacture

US11353751B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Joseph Sargent · Southampton, GB
• Sarabjot Kaur · Manchester, GB
• Simon SIEMIANOWSKI · Darmstadt, DE
• Izumi Saito · Darmstadt, DE

Key dates

• Filing date: Sep 25, 2020
• Grant date: Jun 7, 2022
• Expiry date: Sep 25, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/133726
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A double layer liquid crystal device comprises a first and a second layer with orthogonal or crossed alignment of the liquid crystal phase of the two layers, in which the first and second layer have first and second alignment aids comprised of a polymerized or polymerizable molecular compound. The layers are aligned by UV photoalignment and vertical self-alignment by the aid of suitable additives.