LC display device with parallel field component

US7656490B1 · kind B1 · utility

Assignee

• Merck Patentgesellschaft · DE

Inventors

• Gunter Baur · Glückstadt, DE
• Waltraud Fehrenbach · Hersbruck, DE
• Barbara Weber Ne Staudacher · Ettenheim, DE
• Friedrich Windscheid · Schallstadt, DE
• Rudolf Kiefer · Denzlingen, DE

Key dates

• Filing date: Apr 4, 1996
• Grant date: Feb 2, 2010
• Expiry date: Apr 4, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2201/124
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An electro-optical display device comprising a liquid crystal layer achieves switching using an electric field component which is predominantly parallel to the surface of the liquid crystal layer. Low dependence of image contrast on viewing angle is achieved by selection of parameters including pretilt angle α0, orientation angle β0, etc. of the liquid crystal molecules in the layer.