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. 30, 2025
Filed:
Jan. 15, 2020
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventor:
Yoshihiro Ueta, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 50/155 (2023.01); H10H 20/812 (2025.01); H10K 50/15 (2023.01); H10K 50/115 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10H 20/812 (2025.01); H10K 50/155 (2023.02); H10K 50/156 (2023.02); H10K 50/115 (2023.02); H10K 2102/00 (2023.02);
Abstract
A light-emitting element according to the present invention includes an anode, a hole transport layer, and a light-emitting layer containing a quantum dot, and a cathode in this order, and the hole transport layer includes an n+-type semiconductor layer, and a p+-type semiconductor layer adjacent to the n+-type semiconductor layer and disposed closer to the light-emitting layer than the n+-type semiconductor layer.