Compound having tetrahydronaphthalene skeleton and liquid crystal composition containing same

US6746728B1 · kind B1 · utility

Assignee

• Dainippon Ink and Chemicals, Inc. · JP

Inventors

• Tetsuo Kusumoto · Soma, JP
• Yoshitaka Saito · Kasuga, JP
• Makoto Negishi · Shibukawa, JP
• Yutaka Nagashima · Soma, JP
• Sadao Takehara · Chiba, JP
• Haruyoshi Takatsu · Kodaira, JP
• Gerwald Grahe · Berlin, DE
• Rainer B. Frings · Berlin, DE
• Cornelia Pithart

Key dates

• Filing date: Dec 28, 2001
• Grant date: Jun 8, 2004
• Expiry date: Dec 28, 2021

Classification

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

Abstract

A tetrahydronaphthalene derivative represented by the general formula (I) and a liquid crystal composition containing the same. A compound represented by the general formula (I) shows superior liquid crystallinity and co-solubility with conventional liquid crystal compounds and compositions. Furthermore, addition of such a compound enables the threshold voltage to be significantly reduced with almost no deleterious effect on the responsiveness. In addition, a compound of the present invention can also be easily produced industrially, is colorless, and is chemically stable. Consequently, liquid crystal compositions containing such a compound are extremely useful as liquid crystals, and are particularly suitable for liquid crystal displays requiring a wide operating temperature range, low voltage driving and a high response speed.