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:
Sep. 13, 2022
Filed:
May. 20, 2019
Chongqing Boe Optoelectronics Technology Co., Ltd., Chongqing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Zhuo Xu, Beijing, CN;
Hailong Wu, Beijing, CN;
Yajie Bai, Beijing, CN;
Haipeng Zhu, Beijing, CN;
Min Ran, Beijing, CN;
Peng Liang, Beijing, CN;
Zhi Zhang, Beijing, CN;
CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Chongqing, CN;
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
Abstract
A shift register includes an input circuit, a compensation circuit, an output circuit, a pull-down control circuit, a pull-down circuit, and a reset circuit. During operation of a pixel driving circuit, if a display abnormality occurs in one or more pixels corresponding to the shift register, a compensation signal may be provided by the compensation circuit to a pull-up node according to specific condition of the display abnormality, so as to change a voltage of the pull-up node, and further change a delay time of waveform of the signal passing the switching element in the output circuit connected to the pull-up node.