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. 16, 2022
Filed:
Nov. 01, 2019
Boe Technology Group Co., Ltd., Beijing, CN;
Ming Yang, Beijing, CN;
Ning Cong, Beijing, CN;
Han Yue, Beijing, CN;
Can Zhang, Beijing, CN;
Can Wang, Beijing, CN;
Jiao Zhao, Beijing, CN;
Angran Zhang, Beijing, CN;
Minghua Xuan, Beijing, CN;
Xiaochuan Chen, Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Abstract
A pixel circuit and driving method are provided. The pixel circuit includes a light emitting device having a first terminal and a second terminal; a driving circuit, electrically connected to the first terminal of the light emitting device, for providing power to the light emitting device; a voltage comparator for generating a pulse width modulated signal having a duty cycle based on a data voltage and a reference voltage; an offset voltage detecting circuit, electrically connected to an output terminal of the voltage comparator, for detecting an input offset voltage of the voltage comparator; and a data voltage compensation circuit, electrically connected to the offset voltage detecting circuit, for compensating the data voltage according to the input offset voltage detected.