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. 05, 2019
Filed:
Nov. 27, 2017
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, CN;
Jimu Kuang, Shenzhen, CN;
Hongjun Xie, Shenzhen, CN;
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Shenzhen, Guangdong, CN;
Abstract
The invention provides an OLED pixel driving circuit and OLED display device. The OLED pixel driving circuit uses 4T1C structure and switch (K). The first pin (K) of switch (K) is connected to the drain of the third TFT (T), the second pin (K) connected to the DAC (DAC), and the third pin (K) connected to the ADC (ADC). By the switch signal (Switch) controlling the switch (K), the first pin (K) and the second pin (K) are connected to enter the display mode, and by the switch signal (Switch) controlling the switch (K), the first pin (K) and the third pin (K) are connected to enter the sense mode, so that the ADC (ADC) senses the threshold voltage of the fourth TFT (T), converted by ADC (ADC) for data compensation in the display mode. The invention can compensate, improve display uniform, improve pixel aperture ratio and reduce manufacturing cost.