The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2004
Filed:
Mar. 09, 2000
Applicant:
Inventors:
Peter Brandt, Aschaffenburg, DE;
Dietmar Tippl, Kelkheim, DE;
Assignee:
Mannesmann VDO AG, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 ; G02F 1/133 ; G02F 1/1343 ;
U.S. Cl.
CPC ...
G02F 1/1333 ; G02F 1/133 ; G02F 1/1343 ;
Abstract
A display device, in particular for a vehicle, having a screen which has a liquid crystal cell, with the liquid crystal cell having a front and a rear cell wall and a liquid crystal substance arranged in the cell space between these cell walls, and having a heating apparatus by which the display device can be heated. In order to ensure reliable operation of the display device even at low temperatures, the heating apparatus is arranged in the cell space of the liquid crystal cell directly or indirectly on the front and/or, on the rear cell wall, and that the heating apparatus is operated with a pure AC voltage.