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. 05, 2016
Filed:
Jul. 26, 2013
Sharp Kabushiki Kaisha, Osaka, JP;
Kengo Takahama, Osaka, JP;
Yoshimitsu Yamauchi, Osaka, JP;
Noboru Noguchi, Osaka, JP;
Noritaka Kishi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An organic EL display device includes a controller, a data driver, and a DRAM which provides a gain correction memory and a threshold voltage correction memory. The data driver sends, to the controller, first and second measurement data Im corresponding to the first and second measuring data voltages Vm, respectively. The controller compares ideal characteristic data IO(P) with the first and second measurement data Im, and updates threshold voltage correction data Vt and gain correction data BR based on the comparison results. The controller corrects video data Vm based on the threshold voltage correction data Vt and the gain correction data BR. Thereby, both threshold voltage compensation and gain compensation of a drive transistor are performed with respect to each pixel circuit, while display is performed.