Liquid crystal mixture and liquid crystal cell for LCDs and use of a dye with a dipole for a liquid crystal mixture

US6737126B2 · kind B2 · utility

Assignee

• Sony International (Europe) GmbH · DE

Inventors

• Akio Yasuda · Eßlingen, DE
• David Bloor · London, GB
• Graham Cross · Dublin, IE
• Gordon Love
• Akira Masutani · Stuttgart, DE

Key dates

• Filing date: Oct 9, 2001
• Grant date: May 18, 2004
• Expiry date: Oct 9, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2202/01
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present invention relates to a liquid crystal mixture, especially for a liquid crystal cell for a color liquid crystal display (LCD), comprising a liquid crystal material and a dye, wherein said dye has a dipole, preferably a permanent dipole. The invention further relates to a liquid crystal cell for a color liquid crystal display comprising a liquid crystal mixture, substrate plates or substrate means for comprising said liquid crystal mixture, electrodes for applying an electric field to said liquid crystal mixture and a voltage source for applying a voltage to said electrodes, wherein said liquid crystal mixture comprises a dye with optical anisotropic properties having a dipole, preferably a permanent dipole. The invention further relates to a use of a dye with a dipole for a liquid crystal mixture, especially for a liquid crystal cell and/or liquid crystal displays.