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:
Apr. 15, 2008
Filed:
Aug. 27, 2004
Eishi Mizobata, Tokyo, JP;
Tadashi Nakamura, Tokyo, JP;
Eishi Mizobata, Tokyo, JP;
Tadashi Nakamura, Tokyo, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A plasma display device is provided which is capable of expanding an ensured operating temperature range or operating life time even at time of changes of a driving margin induced by a panel temperature or cumulative operating time of the panel. Display is controlled in a scanning period during which writing discharge is made to occur in a cell, in a sustaining period during which a cell having undergone writing discharge is turned ON for displaying, and in an initializing period during which wall charges in a cell and space charges accumulated before the scanning period starts are initialized. A wall charge adjusting period during which a potential difference between scanning electrodes and data electrodes varies gradually is set and a change rate of a potential between scanning electrodes and data electrodes during the wall charge adjusting period is changed according to the panel temperature and/or cumulative operating time of the panel.