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:
Jul. 19, 2016
Filed:
Dec. 29, 2014
Lg Display Co., Ltd., Seoul, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
A method for sensing degradation of an organic light emitting display includes an initialization step for applying a sensing data voltage to a gate node of a driving TFT and applying an initialization voltage to a source node of the driving TFT, a boosting step for floating the gate node and the source node of the driving TFT and applying a drain-to-source current of the driving TFT to an organic element, a sensing step for again applying the initialization voltage to the source node of the driving TFT, setting a gate-to-source voltage of the driving TFT depending on a degradation degree of the organic element, and storing the drain-to-source current of the driving TFT determined by the set gate-to-source voltage in a line capacitor, and a sampling step for outputting a voltage stored in the line capacitor as a sensing voltage.