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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 12238951 B1

PDFFull Text
Date of Patent:
Feb. 25, 2025

Filed:

Apr. 09, 2021

Organic electroluminescent device and array substrate

Applicant:

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

Inventors:

Qingyu Huang, Beijing, CN;

Fudong Chen, Beijing, CN;

Zhiqiang Jiao, Beijing, CN;

Guangcai Yuan, Beijing, CN;

Assignee:

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

Attorneys:

Perilla Knox & Hildebrandt LLP

Kenneth A. Knox

Primary Examiner:

Shahed Ahmed

Assistant Examiner:

Rhys Poniente Sheker

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 27/32 (2006.01); H10K 50/12 (2023.01); H10K 50/13 (2023.01); H10K 50/155 (2023.01); H10K 50/165 (2023.01); H10K 59/32 (2023.01);
U.S. Cl.
CPC ...
H10K 50/155 (2023.02); H10K 50/12 (2023.02); H10K 50/13 (2023.02); H10K 50/165 (2023.02); H10K 59/32 (2023.02);
Abstract

An organic electroluminescent device comprises an anode, a first organic light emitting layer, an exciton control layer, a second organic light emitting layer, and a cathode that are successively stacked, wherein the first organic light emitting layer comprises a hole transport type host material and a first doped material; the exciton control layer is provided on the surface of the first organic light emitting layer away from the anode; the exciton control layer comprises a first hole transport material and a first electron transport material; the second organic light emitting layer comprises an electron transport type host material and a second doped material; the cathode is provided on the side of the second organic light emitting layer away from the anode; and one of the first doped material and the second doped material is a fluorescence-doped material, and the other is a phosphorescence-doped material.

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