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. 22, 2023
Filed:
Dec. 08, 2020
Lg Display Co., Ltd., Seoul, KR;
Shinji Takasugi, Tokyo, JP;
LG Display Co., Ltd., Seoul, KR;
Abstract
A light emitting display device where a pixel circuit detecting a threshold voltage of a driving transistor in each of a plurality of subpixels is arranged in a matrix, includes: a threshold voltage estimating part generating a threshold voltage estimation value by estimating the threshold voltage of the driving transistor through a data counting method; a reference voltage modifying part generating a reference voltage modification value by modifying a reference voltage used for detecting the threshold voltage based on the threshold voltage estimation value; an image data voltage modifying part generating an image data voltage modification value by adding a threshold voltage detection value to a data voltage corresponding to an image data; and an accumulated deterioration calculating part calculating an accumulated deterioration by accumulating a deterioration data of a function of the data voltage.