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.:
Date of Patent:
Sep. 09, 2025
Filed:
Jul. 25, 2019
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Inventors:
Satoshi Seo, Kanagawa, JP;
Toshiki Sasaki, Kanagawa, JP;
Shogo Uesaka, Kanagawa, JP;
Shiho Nomura, Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 491/048 (2006.01); C07D 519/00 (2006.01); H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 59/80 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
C07D 491/048 (2013.01); C07D 519/00 (2013.01); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 50/166 (2023.02); H10K 59/87 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02); H10K 2102/351 (2023.02);
Abstract
Provided is a light-emitting device that can have sufficient device characteristics even with a smaller number of stacked layers in an EL layer and a thicker light-emitting layer than a conventional one by using, as an organic compound used for the EL layer of the light-emitting device, a material that can increase not only a property of carrier transport to the light-emitting layer but also a property of carrier injection from an electrode.