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. 30, 2019
Applicant:
Sharp Kabushiki Kaisha, Osaka, JP;
Inventors:
Jun Sakuma, Osaka, JP;
Yasushi Asaoka, Osaka, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10H 20/851 (2024.12); H10H 29/14 (2024.12);
U.S. Cl.
CPC ...
H10H 20/8514 (2024.12); H10H 20/8512 (2024.12); H10H 29/142 (2024.12);
Abstract
A light-emitting element includes a first light-emitting layer including a first quantum dot and a second light-emitting layer including a second quantum dot provided between the cathode electrode and an anode electrode in order from the cathode electrode, the first quantum dot has a core-shell structure including a first core and a first shell, the second quantum dot has a core-shell structure including a second core and a second shell, and an energy level at a lower end of a conduction band of the first core is higher than an energy level at a lower end of a conduction band of the second core.