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. 15, 2025
Filed:
Jan. 11, 2022
Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Hubei, CN;
Zhibing Yi, Hubei, CN;
Jie Yang, Hubei, CN;
Haitao Xu, Hubei, CN;
Zhengshen Hua, Hubei, CN;
Xiaosu Jiang, Hubei, CN;
Yu Zhang, Hubei, CN;
Munjae Lee, Hubei, CN;
Abstract
A light-emitting device and an OLED display panel are provided. The light-emitting device includes a charge generation layer. The charge generation layer includes an N-type electron generation layer, a P-type hole generation layer, and a metal activation layer disposed between the two. The metal activation layer is in surface contact with of the N-type electron generation layer and the P-type hole generation layer. It activates a surface energy at contact surfaces, prevents an accumulation of charges to form an electric field in an internal space, and improves a performance and a lifespan of the light-emitting device.