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:
Apr. 07, 2020
Filed:
Sep. 20, 2018
Shanghai Tianma Am-oled Co., Ltd., Shanghai, CN;
Shuang Cheng, Shanghai, CN;
Xiangcheng Wang, Shanghai, CN;
Jinghua Niu, Shanghai, CN;
Qing Zhu, Shanghai, CN;
Zhi Zhang, Shanghai, CN;
Jianyun Wang, Shanghai, CN;
Jun Lin, Shanghai, CN;
SHANGHAI TIANMA AM-OLED CO., LTD., Shanghai, CN;
Abstract
Organic light-emitting display panel and device are provided for improving performance of the organic light-emitting device. The organic functional layer comprises an organic light-emitting layer and a first electron transmission layer between the cathode and the organic light-emitting layer. The first electron transmission layer comprises a first doping agent, and the first doping agent contains alkaline earth metal elements or rare earth metal elements. A second electron transmission layer is located between the first electron transmission layer and the organic light-emitting layer, and the second electron transmission layer is undoped with the first doping agent. A lowest unoccupied molecular orbital LUMO1 in the first electron transmission layer and a lowest unoccupied molecular orbital LUMO2 in the second electron transmission layer satisfy: |LUMO1−LUMO2|<0.18 eV. A highest occupied molecular orbital HOMO2 in the second electron transmission layer and a highest occupied molecular orbital HOMO3 of the organic light-emitting layer satisfy: |HOMO2−HOMO3|<1 eV.