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. 02, 2007
Filed:
Mar. 22, 2005
Hiroyuki Sato, Yonezawa, JP;
Takashi Goto, Yonezawa, JP;
Hiroyuki Sato, Yonezawa, JP;
Takashi Goto, Yonezawa, JP;
Tohoku Pioneer Corporation, Yamagata, JP;
Abstract
In a detection mode, a reverse bias voltage VM is applied to any one of scan lines K–Km arranged in a light emitting display panel. The electrical potentials generated at respective data lines A–An of this time are supplied to potential determination means J–Jn. In the potential determination means J–Jn, the electrical potentials generated at the respective data lines A–An are supplied to switching elements Q–Qvia transfer switches Q–Q. When the electrical potentials are the threshold voltages of the switching elements Q–Qor greater, the outputs of comparators CP–CPn are inverted, and the states of this time are latched in latch circuits LC–LCn to be stored in a data register. By data stored in the data register, it is determined whether or not a defect has occurred in pixels of the display panel, and the location thereof is also determined.