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. 23, 2019
Filed:
Sep. 28, 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 using 4T1C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display for the driving current of the OLED, thereby reducing the influence of the threshold voltage imposed on the TFT on the driving current of the OLED and improving the display quality of the OLED display device.