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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 12200952 B1

PDFFull Text
Date of Patent:
Jan. 14, 2025

Filed:

Jan. 31, 2020

Light-emitting device, light-emitting apparatus, electronic device, display device, and lighting device

Applicant:

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

Inventors:

Satoshi Seo, Kanagawa, JP;

Nobuharu Ohsawa, Kanagawa, JP;

Shunpei Yamazaki, Tokyo, JP;

Assignee:

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

Attorney:

Husch Blackwell LLP;

Primary Examiner:

Monica D Harrison

Assistant Examiner:

Andre C Stevenson

Int. Cl.
CPC ...
H10K 50/17 (2023.01); H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 59/12 (2023.01); H10K 59/38 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/17 (2023.02); H10K 50/11 (2023.02); H10K 50/16 (2023.02); H10K 59/12 (2023.02); H10K 59/38 (2023.02); H10K 85/30 (2023.02); H10K 85/346 (2023.02); H10K 85/654 (2023.02); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2102/331 (2023.02);
Abstract

A long-lifetime light-emitting device is provided. The light-emitting apparatus includes a first light-emitting device and a first color conversion layer. The first color conversion layer contains a first substance. An EL layer of the first light-emitting device includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The second layer contains a third organic compound. The third layer contains a fourth organic compound. The light-emitting layer contains a fifth organic compound and a sixth organic compound. The fourth layer contains a seventh organic compound. The first organic compound is an organic compound having an electron accepting property to the second organic compound. The fifth organic compound is an emission center substance. The HOMO level of the second organic compound is higher than or equal to −5.7 eV and lower than or equal to −5.4 eV.

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