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:
Nov. 26, 2019
Filed:
Nov. 25, 2017
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, Guangdong, CN;
Hongjun Xie, Guangdong, CN;
Abstract
The present disclosure provides an AMOLED external electrical compensation detection method, in the display mode, estimating a cross-voltage between the drain and the source of the detecting TFT, calculating a gate-source voltage of the driving TFT based on the estimated value, it is possible to improve the writing precision of the gate-source voltage of the driving TFT; in the detection mode, estimating a cross-voltage between the drain and the source of the detecting TFT, calculating a source voltage of the driving TFT based on the estimated value, calculating the threshold voltage and the carrier mobility of the driving TFT based on the calculated voltage of the source of the driving TFT, it is possible to reduce the calculation error between the threshold voltage and the carrier mobility of the driving TFT and improve the accuracy of the external electrical compensation detection of the AMOLED.