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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.:

US 12035554 B1

PDFFull Text
Date of Patent:
Jul. 09, 2024

Filed:

Sep. 23, 2021

Organic electroluminescent device and manufacturing method thereof

Applicant:

Boe Technology Group Co., Ltd., Beijing, CN;

Inventors:

Xiangmin Wen, Beijing, CN;

Xing Fan, Beijing, CN;

Yan Fan, Beijing, CN;

Hao Gao, Beijing, CN;

Assignee:

BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;

Attorney:

Myers Bigel, P.A.

Primary Examiner:

Patricia D Valenzuela

Int. Cl.
CPC ...
H10K 50/16 (2023.01); H10K 71/16 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H05B 33/22 (2006.01); H10K 50/155 (2023.01); H10K 101/30 (2023.01);
U.S. Cl.
CPC ...
H10K 50/16 (2023.02); H10K 71/164 (2023.02); H05B 33/22 (2013.01); H10K 50/155 (2023.02); H10K 85/324 (2023.02); H10K 85/6572 (2023.02); H10K 2101/30 (2023.02);
Abstract

The present disclosure provides an organic electroluminescent device and a manufacturing method thereof. The organic electroluminescent device includes an anode, an electron transport layer and a cathode. The material of the electron transport layer includes a mixture of a first electron transport material and a second electron transport material, the lowest unoccupied molecular orbital energy level of the first electron transport material is higher than that of the second electron transport material, and the ratio of the first electron transport material to the second electron transport material first decreases and then increases in the direction from the cathode to the anode.

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