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:
Jun. 20, 2017
Filed:
Nov. 07, 2014
Shanghai Tianma Am-oled Co., Ltd, Shanghai, CN;
Tianma Micro-electronics Co., Ltd., Shenzhen, CN;
SHANGHAI TIANMA AM-OLED CO., LTD., Shanghai, CN;
TIANMA MICRO-ELECTRONICS CO., LTD., Shenzhen, CN;
Abstract
An OLED pixel compensation circuit includes first, second, third, fourth, fifth, sixth and seventh transistors and a storage capacitor. The first transistor has a gate electrode coupled to a scan signal, a first electrode coupled to a data signal, and a second electrode coupled to a gate electrode of the fifth transistor. The second transistor has a gate electrode coupled to the scan signal, a first electrode coupled to a power supply voltage, and a second electrode coupled to a second electrode of the storage capacitor. The third transistor has a gate electrode coupled to a first light emitting signal, a first electrode coupled to the power supply voltage. The transistors and the storage capacitor are configured to compensate the threshold voltage drift of the fifth transistor, which is the driving transistor for the OLED.