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:
Dec. 22, 2020
Filed:
Jun. 18, 2019
Hefei Xinsheng Optoelectronics Technology Co., Ltd., Anhui, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Zhidong Yuan, Beijing, CN;
Yongqian Li, Beijing, CN;
Meng Li, Beijing, CN;
Can Yuan, Beijing, CN;
Haixia Xu, Beijing, CN;
Jun Wang, Beijing, CN;
Xuehuan Feng, Beijing, CN;
HEFIE XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., Anhui, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
A pixel circuit, a driving method and a display device. The pixel circuit includes a light emitting unit; a drive transistor configured to drive the light emitting unit to emit light to display an image frame; and a control circuit configured to control the drive transistor according to signals on control lines. The method of controlling includes: resetting, in a reset stage of an image frame, a voltage of the first electrode of the drive transistor by applying a reset voltage, and sensing, in a sense stage, a threshold voltage of the drive transistor by applying a reference voltage. The control circuit is further configured to control, in an offset elimination stage at the beginning of the image frame and prior to the reset stage, the drive transistor to be switched off, which was in an ON state at the end of a previous image frame.