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. 04, 2020
Filed:
Aug. 09, 2017
Shanghai Tianma Am-oled Co., Ltd., Shanghai, CN;
Ying Liu, Shanghai, CN;
Xiangcheng Wang, Shanghai, CN;
Hongyang Ren, Shanghai, CN;
Yuji Hamada, Shanghai, CN;
Wei He, Shanghai, CN;
Chen Liu, Shanghai, CN;
Jie Li, Shanghai, CN;
SHANGHAI TIANMA AM-OLED CO., LTD., Shanghai, CN;
Abstract
The present disclosure relates to an OLED display panel, comprising a first electrode and a second electrode, a light emitting layer and a first auxiliary light emitting layer disposed between the first electrode and the second electrode, the first auxiliary light emitting layer is disposed between the light emitting layer and the second electrode, wherein the first auxiliary light emitting layer includes at least a first electron-type auxiliary light emitting layer, wherein the first electron-type auxiliary light emitting layer includes a host material and a metal element doped in the host material; the host material has at least one pyridyl group and an aromatic group conjugated to the at least one pyridyl group; and the glass transition temperature of the host material is ≥90° C. The present disclosure can improve the luminous efficiency and lifetime of an organic photoelectronic device and reduce its voltage by using this method.