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:
Jun. 08, 2021
Filed:
Jul. 06, 2018
Shenzhen China Star Optoelectronics Technology Co., Ltd., Guangdong, CN;
Yuntao Li, Guangdong, CN;
SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
The present disclosure relates to a TFT-LCD and the driving circuit and the switching power supply thereof. The switching power supply includes a PWM controller, an electronic signal generator, and a field effect transistor. The output pins of the electronic signal generator being configured to output voltage signals that vary periodically between multiple voltage ranges. The frequency selection pins of the PWM controller and the output pins of the electronic signal generator are connected to receive the voltage signals from the electronic signal generator, and the PWM controller outputs switching signals of a predetermined frequency through at least one output pin according to a voltage range of the voltage signals received by the frequency selection pins. A gate pin of the FET connects to output pins of the PWM controller, and a source pin of the FET is grounded.