Ferroelectric liquid crystal components having high spontaneous polarization and low helical pitch

US5231528A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Claus Escher · Mühltal, DE
• Wolfgang Hemmerling · Pocking, DE
• Gerhard Illian · Frankfurt am Main, DE
• Takamasa Harada · Oberursel, DE
• Mikio Murakami · Kakegawa, JP

Key dates

• Filing date: Nov 20, 1992
• Grant date: Jul 27, 1993
• Expiry date: Nov 20, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/141
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

What is described is a surface stabilized ferroelectric liquid crystal display with a layer thickness of 1 to 10 .mu.m containing a ferroelectric liquid crystal mixture having a high spontaneous polarization of P.sub.s greater than 20 nC.multidot.cm.sup.31 2 and a natural helical pitch of less than one half of the layer thickness.