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:
Jan. 25, 2022
Filed:
May. 23, 2018
Kunshan Go-visionox Opto-electronics Co., Ltd., Kunshan, CN;
Weiwei Li, Kunshan, CN;
Shengfang Liu, Kunshan, CN;
Chao Min, Kunshan, CN;
Lei Xu, Kunshan, CN;
Xiaoyu Gao, Kunshan, CN;
Xiuqi Huang, Kunshan, CN;
KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD., Kunshan, CN;
Abstract
The present disclosure relates to an organic electroluminescent device and a preparation method thereof. The organic electroluminescent device includes a hole injection layer including a first doped layer and/or a second doped layer. The first doped layer includes a P-type dopant, and the second doped layer includes a P-type dopant and a hole transport material. The organic electroluminescent device includes a hole transport layer formed on the hole injection layer, and an electron blocking layer formed on the hole transport layer. A difference in HOMO energy level between the electron blocking layer and the hole transport layer is less than or equal to 0.2 eV. The power consumption of the organic electroluminescent device can be reduced. The lifetime of the mass production device therefore can be increased.