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. 20, 2009
Filed:
Aug. 19, 2005
Hironori Toyoda, Mobara, JP;
Shinichi Kato, Mobara, JP;
Masamitsu Furuie, Mobara, JP;
Masaaki Okunaka, Fujisawa, JP;
Naoki Tokuda, Mobara, JP;
Hironori Toyoda, Mobara, JP;
Shinichi Kato, Mobara, JP;
Masamitsu Furuie, Mobara, JP;
Masaaki Okunaka, Fujisawa, JP;
Naoki Tokuda, Mobara, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
The present invention provides a display device which can obviate the possibility of sticking as a whole of a display area even when the brightness is relatively changed on a display area. In a display device, a plurality of pixels are arranged in the inside of a display area and the respective pixels include electrodes to which signals are independently inputted and a common second electrode to which a reference signal with respect to the signals is inputted, the current from the cathode electrode in the first and second display areas are respectively measured, and when the electric current of the first display area is larger than the electric current of the second display area, a potential difference between the cathode electrode of the first display area and the anode electrode of the first display area is made small.