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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 11937439 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

Apr. 29, 2022

Light-emitting element, light-emitting device, display device, electronic appliance, and lighting device

Applicant:

Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;

Inventors:

Satoshi Seo, Kanagawa, JP;

Hiromi Seo, Kanagawa, JP;

Tatsuyoshi Takahashi, Kanagawa, JP;

Takahiro Ishisone, Kanagawa, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., , JP;

Attorney:

Husch Blackwell LLP

Primary Examiner:

Cuong B Nguyen

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 50/13 (2023.02); H10K 50/11 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 85/342 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); H10K 85/341 (2023.02); H10K 85/346 (2023.02); H10K 85/615 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 2101/10 (2023.02); H10K 2101/27 (2023.02); H10K 2101/90 (2023.02);
Abstract

A multicolor light-emitting element using fluorescence and phosphorescence, which has a small number of manufacturing steps owing to a relatively small number of layers to be formed and is advantageous for practical application can be provided. In addition, a multicolor light-emitting element using fluorescence and phosphorescence, which has favorable emission efficiency is provided. A light-emitting element which includes a light-emitting layer having a stacked-layer structure of a first light-emitting layer exhibiting light emission from a first exciplex and a second light-emitting layer exhibiting phosphorescence is provided.

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