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:
May. 19, 2020
Filed:
Dec. 14, 2018
Shanghai Tianma Am-oled Co., Ltd., Shanghai, CN;
Shuang Cheng, Shanghai, CN;
Jinghua Niu, Shanghai, CN;
Xiangcheng Wang, Shanghai, CN;
Qing Zhu, Shanghai, CN;
Weili Qiao, Shanghai, CN;
Yinhe Liu, Shanghai, CN;
Xiaoqian Sun, Shanghai, CN;
SHANGHAI TIANMA AM-OLED CO., LTD., Shanghai, CN;
Abstract
An organic light-emitting display panel, comprising: an array substrate comprising driving units; an organic light-emitting unit including an anode, a cathode, and an organic functional layer there between, the organic functional layer comprises an organic light-emitting layer, a first electron transmission layer between the cathode and the organic light-emitting layer, and a first hole transmission layer between the anode and the organic light-emitting layer; the first electron transmission layer comprises a first electron transmission matrix and a first dopant comprising an alkaline earth metal element or a rare earth metal element; and the organic light-emitting layer comprises a blue light-emitting layer comprising a blue host material, wherein an electron mobility and a hole mobility of the blue host material satisfy the following conditions: the electron mobility of the blue host material>(the hole mobility of the blue host material)×10under an electric field of 0.2 MV/cm.