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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 12581796 B1

PDFFull Text
Date of Patent:
Mar. 17, 2026

Filed:

Dec. 22, 2021

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

Applicant:

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

Inventors:

Satoshi Seo, Kanagawa, JP;

Tsunenori Suzuki, Kanagawa, JP;

Nobuharu Ohsawa, Kanagawa, JP;

Assignee:

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

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Syed I Gheyas

Int. Cl.
CPC ...
H10K 50/17 (2023.01); H10K 50/13 (2023.01); H10K 50/16 (2023.01); H10K 59/80 (2023.01); H10K 59/12 (2023.01);
U.S. Cl.
CPC ...
H10K 50/171 (2023.02); H10K 50/131 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 59/80521 (2023.02); H10K 59/12 (2023.02);
Abstract

A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a second electrode over a first electrode with an EL layer therebetween. The EL layer includes at least a light-emitting layer, an electron-transport layer, and an electron-injection layer. The electron-transport layer is positioned over the light-emitting layer. An insulating layer is in contact with side surfaces of the light-emitting layer and the electron-transport layer. The electron-injection layer is positioned over the electron-transport layer. The electron-injection layer is in contact with the electron-transport layer and the insulating layer.

Find Patent Forward Citations

Seo, Satoshi. (2026). Light-emitting device, light-emitting apparatus, electronic device, and lighting device (U.S. Patent No. 12581796). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12581796

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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