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:
Feb. 25, 2020
Filed:
Apr. 04, 2018
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, Guangdong, CN;
Xiaolong Chen, Guangdong, CN;
Abstract
The present disclosure provides a pixel including a first transistor, a second transistor, a third transistor, a fourth transistor, a capacitor, and an OLED; the second transistor and the third transistor are turned on in the first period to charge the capacitor with a data current, until the current flowing through the second transistor is 0 and the current flowing through the first transistor is the data current, the capacitor stores a voltage corresponding to the data current; the fourth transistor is turned on in the second period to cause the OLED to emit light, and the voltage stored by the capacitor corresponding to the data current causes the current flowing through the OLED to coincide with the current flowing through the first transistor in the first period. The present disclosure can make the current flowing through the OLED not change with the threshold voltage of the driving transistor.