Veb Werk Fur Fernsehelektronik Im Veb Kombinat Mikroelektronik

Veb Werk Fuer Fernsehelektronik Im Veb Kombinat Mikroelektronik

Reinhard Paschke

Horst Zaschke

Dietrich Demus

Wolfgang Weissflog

Gerhard Pelzl

Adalbert Wiegeleben

Saskia Kohler

Bak G Yong

Wolfgang Schafer

Barth Petra

Carsten Tschirske

Klaus-Dieter Scherf

Ulrich Rosenfeld

Kristine Mohr

Barbara Kampa

Joachimi Detlev

Demus Dietrich

Fast-switching displays with memory properties are provided, which can display digits, symbols, and images, and which contain as chemically and thermally stable ferroelectric liquid crystalline substances, according to the invention, liquid crystalline derivatives which contain a chiral alkyl halide residue corresponding to the general formula ##STR1## are used in mixtures of one another as well as in conjunction with other liquid crystalline or non-crystalline liquid substances.

Ferroelectric liquid crystals

Nematic liquid crystalline substances as additives in mixtures for electro-optical systems for the rendition of numbers, symbols and images. The additives provide new liquid crystalline substances of broad mesophase ranges which improve the chemical stability of the substance mixtures. It has been found that liquid crystalline 5-alkyl-pyridine-2-carboxylic acid esters of the general formula ##STR1## are suitable for utilization in mixtures for electro-optical displays for the rendition of numbers, symbols and images.

Liquid crystalline substances

Growing community of inventors

Halle-Neustadt, Germany

Reinhard Paschke