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:
Aug. 14, 2018
Filed:
Dec. 22, 2014
Joled Inc., Tokyo, JP;
Hiroshi Shirouzu, Shiga, JP;
JOLED INC., Tokyo, JP;
Abstract
A display device includes: an organic electroluminescent element; a capacitor; a drive transistor; a data line; a test transistor which switches between conduction and non-conduction between the data line and an anode electrode of the organic electroluminescent element; a voltage generation unit which supplies the data line with a test voltage for measuring an anode voltage of the organic electroluminescent element; a current detection unit which detects a current through the test transistor when a test transistor is in a conducting state, while the voltage generation unit is applying the test voltage to the data line; a control unit which updates the voltage value of the test voltage, based on a direction of the current detected by the current detection unit, and causes the voltage generation unit to output the updated test voltage.