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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 12757569 B1

PDFFull Text
Date of Patent:
Oct. 06, 2026

Filed:

Jun. 30, 2022

Light-emitting device and method of manufacturing the same, display panel and display apparatus

Applicants:

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

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

Inventor:

Haowei Wang, Beijing, CN;

Assignees:

BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing, CN;

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

Attorney:

XSENSUS LLP

Primary Examiner:

Jeff W Natalini

Assistant Examiner:

Jacob Raul Marin

Int. Cl.
CPC ...
H10K 50/15 (2023.01); B82Y 20/00 (2011.01); H10K 50/115 (2023.01); H10K 71/12 (2023.01); H10K 85/60 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/156 (2023.02); H10K 50/115 (2023.02); H10K 71/12 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); B82Y 20/00 (2013.01); H10K 85/626 (2023.02); H10K 85/6572 (2023.02); H10K 2101/40 (2023.02); H10K 2102/351 (2023.02);
Abstract

A light-emitting device is provided. The light-emitting device includes a first electrode, a second electrode, a quantum dot light-emitting layer located between the first electrode and the second electrode, and a hole transporting doped layer. The hole transporting doped layer is located between the quantum dot light-emitting layer and the second electrode. The hole transporting doped layer includes a mixture of at least two hole transporting materials, and highest occupied molecular orbital energy levels of the at least two hole transporting materials are different.

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