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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 12622131 B1

PDFFull Text
Date of Patent:
May. 05, 2026

Filed:

Aug. 04, 2021

Organic electroluminescent device, display panel, and display apparatus

Applicant:

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

Inventor:

Yong Wu, Beijing, CN;

Assignee:

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

Attorney:

IPro, PLLC

Primary Examiner:

Dawn L Garrett

Int. Cl.
CPC ...
H10K 50/12 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/121 (2023.02); H10K 85/631 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 2101/30 (2023.02); H10K 2102/351 (2023.02);
Abstract

Provided are an organic electroluminescent device, a display panel, and a display apparatus. An exciton layer adjacent to a light-emitting layer is added, and the exciton layer serves as an exciton recombination region and achieves the effect of increasing the density of excitons, where the singlet-state energy level of the exciton layer is higher than the singlet-state energy level of a host material in the light-emitting layer, and an emission spectrum of the exciton layer and an absorption spectrum of the host material in the light-emitting layer have an overlapping area. Moreover, the exciton layer allows triplet-state excitons formed in the exciton layer to form singlet-state excitons via a reverse intersystem crossing process.

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Wu, Yong. (2026). Organic electroluminescent device, display panel, and display apparatus (U.S. Patent No. 12622131). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12622131

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