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:
Apr. 29, 2025
Filed:
Sep. 02, 2019
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventors:
Daisuke Honda, Sakai, JP;
Yoshihiro Ueta, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2005.12); H10K 50/125 (2022.12); H10K 50/15 (2022.12); H10K 50/16 (2022.12); H10K 59/12 (2022.12); H10K 102/00 (2022.12);
U.S. Cl.
CPC ...
H10K 50/125 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 59/12 (2023.01); H10K 2102/331 (2023.01);
Abstract
A light-emitting element includes: an electron transport layer; a hole transport layer; and a light-emitting layer between the electron transport layer and the hole transport layer, the light-emitting layer including: quantum dots; and ligands coordinated to the quantum dots, wherein the ligands in the light-emitting layer have a lower concentration on an electron transport layer side of the light-emitting layer than on a hole transport layer side of the light-emitting layer.