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:
Jul. 09, 2019
Filed:
Apr. 20, 2017
Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, Guangdong, CN;
Yuying Cai, Guangdong, CN;
Shenzhen China Star Optoelectronics Technology Co., Ltd, Shenzhen, Guangdong, CN;
Abstract
A pixel driving circuit and an OLED display are provided. The pixel driving circuit includes a first TFT, a second TFT, a third TFT, a fourth TFT, a capacitor, and an OLED. A gate of the third TFT is coupled to the scanning signal. A source of the third TFT is coupled to a drain of the fourth TFT. A gate of the fourth TFT is coupled to a data signal and a source of the fourth is coupled to a second reference voltage signal. The fourth TFT controls the electric current of the first TFT with the data signal and the second reference signal during the compensation stage of threshold voltage. Further, the compensation voltage of the first TFT is compensated.