Liquid crystal phase

US4818428A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Bernhard Scheuble · Alsbach, DE
• Georg Weber · Langen (Hessen), DE
• Joachim Krause · Dieburg, DE

Key dates

• Filing date: Sep 12, 1986
• Grant date: Apr 4, 1989
• Expiry date: Sep 12, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3422
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to liquid crystal phases (LC phases) having a particularly low threshold voltage, a particularly low ratio K.sub.3 /K.sub.1 of the elastic constants for bending (K.sub.3) and spreading (K.sub.1) and broad nematic phase ranges, these phases containing at the same time at least one highly polar component of reduced degree of association and, to reduce the quotient K.sub.3 /K.sub.1 of the elastic constants for bending (K.sub.3) and spreading (K.sub.1) of the phases to a value.ltoreq.1.1, at least one apolar liquid crystal component.