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:
May. 19, 2020
Filed:
Jul. 31, 2018
Beijing Boe Display Technology Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Song Liu, Beijing, CN;
Hengyu Yan, Beijing, CN;
Boxiao Lan, Beijing, CN;
Jinhui Cheng, Beijing, CN;
Zhiming Meng, Beijing, CN;
Chunbing Zhang, Beijing, CN;
Rui Guo, Beijing, CN;
Hanzhang Niu, Beijing, CN;
Jianzi He, Beijing, CN;
BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
A pixel driving circuit is provided, comprising: a current control circuit configured to provide a constant current signal and an activation signal, a current switching circuit configured to control the transmission of the constant current signal to a light-emitting device under the control of the activation signal, and a grounding control circuit configured to control the current control circuit to provide the constant current signal and the activation signal. An input terminal of the current control circuit is connected to a data line and a power line, respectively. A control terminal of the current switching circuit is connected to an output terminal of the current control circuit, an input terminal of the current switching circuit is connected to the input terminal of the current control circuit, and an output terminal of the current switching circuit s connected to an input terminal of the light-emitting device.