Liquid crystal display device having active & passive cell wherein a heater is disposed inside the passive cell

US6317178A · kind A · utility

Assignee

• Mannesmann VDO AG · DE

Inventors

• Peter Brandt · Berghausen, DE
• Dietmar Tippl · Kelkheim, DE

Key dates

• Filing date: May 2, 2000
• Grant date: Nov 13, 2001
• Expiry date: May 2, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2203/09
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A display device, in particular for a vehicle, has a viewing screen including a liquid crystal cell, the liquid crystal cell having a front cell wall and a rear cell wall and a liquid crystal substance arranged in the cell space between these cell walls, and with a heating device by means of which the display device can be heated. In order to ensure reliable operation of the display device even in the case of low temperatures, the heating device is arranged in the cell space of the liquid crystal cell directly or indirectly on the front cell wall and/or the rear cell wall.