Ferroelectric liquid-crystal display of high contrast and brightness

US5384168A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hans-Rolf Dubal · Königstein, DE
• Takamasa Harada · Oberursel, DE
• Heinz Rieger · Hofheim, DE
• Norbert Rosch · Frankfurt am Main, DE
• Peter Wegener · Königstein, DE

Key dates

• Filing date: Apr 19, 1991
• Grant date: Jan 24, 1995
• Expiry date: Apr 19, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Ferroelectric liquid-crystal display of high contrast and brightness. The use of alignment layers containing compounds having an amphiphilicity-providing effect increases the contrast and brightness of the image in FLC displays.