Supertwist liquid-crystal display

US5308538A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Georg Weber · Langen (Hessen), DE
• Joachim Ruger · Darmstadt, DE
• Klaus P. Stahl · Darmstadt, DE
• Martina Schmidt · Munster, DE
• Detlef Pauluth · Ober-Ramstadt, DE
• Michael C. Romer · Rodgau, DE

Key dates

• Filing date: Dec 6, 1991
• Grant date: May 3, 1994
• Expiry date: Dec 6, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/46
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Supertwist liquid-crystal displays having excellent properties are obtained using a nematic liquid-crystal mixture based on component A which contains one or more compounds of the formula IIa or IIb: ##STR1## on or more compounds of the formulae IIc to IIe: ##STR2## and one or more compounds of the formula IIf to IIh: and one or more compounds of the formula IIf to IIh: ##STR3## wherein R, R.sup.1, R.sup.2, L, Y, X and n are as defined herein.