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:
Jun. 14, 2022
Filed:
May. 04, 2020
Yungu (Gu'an) Technology Co., Ltd., Langfang, CN;
Weiwei Li, Langfang, CN;
Chao Chi Peng, Langfang, CN;
Lin He, Langfang, CN;
Jingwen Tian, Langfang, CN;
Tiantian Li, Langfang, CN;
Mengzhen Li, Langfang, CN;
YUNGU (GU'AN) TECHNOLOGY CO., LTD., Langfang, CN;
Abstract
Provided is an organic light-emitting diode. The organic light-emitting diode includes a first electrode, a second electrode, a light-emitting layer and a hole blocking layer, where the first electrode and the second electrode are oppositely disposed; the light-emitting layer is disposed between the first electrode and the second electrode; the hole blocking layer is disposed between the light-emitting layer and the second electrode; and the hole blocking layer includes at least two hole blocking sub-layers which are stacked, where a lowest unoccupied molecular orbital (LUMO) energy level decreases sequentially in the at least two hole blocking sub-layers.