Liquid crystal compounds, liquid crystal medium and liquid crystal display

US6569505B2 · kind B2 · utility

Assignee

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

• Eike Poetsch · Mühltal, DE
• Atsutaka Manabe · Bensheim, DE
• Volker Reiffenrath · Roßdorf, DE
• Marcus Reuter · Darmstadt, DE
• Volker Meyer · Groß-Zimmern, DE
• Joachim Krause · Dieburg, DE
• Detlef Pauluth · Ober-Ramstadt, DE

Key dates

• Filing date: Feb 2, 2001
• Grant date: May 27, 2003
• Expiry date: May 26, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, preferably comprising isothiocyanate compounds, most preferably compounds of formula I, as given in the text, and a further dielectrically positive component B, preferably comprising terminally polar substituted bi- or terphenyl compounds, most preferably comprising compounds of formula II, as given in the text, further to novel isothiocyanato compounds as well as to liquid crystal displays comprising these media, in particular to PDLC display and most particular to holographic PDLC displays. The instant invention further relates to compounds of formula I wherein the parameters are as as specified in the text.