Mixing component for liquid crystal substances

US4615824A · kind A · utility

Assignee

• VEB Werk fuer Fernsehelektronik im VEB Kombinat Mikroelektronik · DE

Inventors

• Dietrich Demus · Halle, BE
• Horst Zaschke · Halle, BE
• Gerhard Pelzl · Halle (Saale), DE
• Carsten Tschierske · Bodenwerder, DE

Key dates

• Filing date: Nov 28, 1984
• Grant date: Oct 7, 1986
• Expiry date: Nov 28, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/54
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A mixing component for nematic liquid-crystalline substances used in optoelectronic components for the rendition of numbers, symbols and images. The object of the invention is to reduce, in components for nematic liquid crystal substances, the threshold and operating voltages. It has been found, that the addition of one or more 1-oxa-2,6,7-trioxane-1-phospha-bicyclo-derivatives having the general formula ##STR1## wherein ##STR2## with R.sup.1 =C.sub.n H.sub.2n+1 --, C.sub.n H.sub.2n+1 O--, C.sub.n H.sub.2n+1 COO--, C.sub.n H.sub.2n+1 OCOO--, R.sup.2 +C.sub.n H.sub.2n=1 -- with n=an integer from 1 to 10 to nematic liquid crystal substances, considerably reduces the operating voltage.