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:
Oct. 13, 2026
Filed:
Jan. 17, 2025
Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan, CN;
Abstract
The present disclosure provides a display device and a driving method thereof. The pixel driving circuit of the display device panel comprises a pulse amplitude modulation driving module and a pulse width modulation driving module. The pulse width modulation driving module includes a comparator, a plurality of transistors, and a capacitor. The comparator is configured to compare the voltage of the ramp signal and the voltage of the data signal and control the conduction state of the light-emitting device of the display panel. The driving method includes comparing a voltage of a ramp signal and a voltage of a data signal in a light-emitting phase to control a light emission time of a light-emitting device. The present disclosure can improve the low grayscale display effect and improve the display uniformity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile