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:
Mar. 17, 2020
Filed:
Sep. 27, 2017
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, Guangdong, CN;
Yuying Cai, Guangdong, CN;
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd, Shenzhen, Guangdong, CN;
Abstract
A pixel driving circuit of OLED display device and an OLED display device having the pixel driving circuit are disclosed. The pixel driving circuit adopts a 4T1C pixel structure such that when turning on or turning off, the OLED display device detects the threshold voltage of the driving thin-film transistor, and compensating the threshold voltage being detected into the driving current of the organic light-emitting diode when operates normally such that the present invention is capable of eliminating an affection of the threshold voltage of the driving thin-film transistor to the driving current of the organic light-emitting diode so as to improve the quality of the display image of the OLED display device.