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:
May. 20, 2025
Filed:
Aug. 13, 2019
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventor:
Kenji Kimoto, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 50/18 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/18 (2023.02); H10K 50/156 (2023.02); H10K 50/16 (2023.02); H10K 50/181 (2023.02); H10K 2102/00 (2023.02);
Abstract
A light-emitting element includes: a first electrode which is an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a second electrode which is a cathode in this order; and an oxide layer which is a first oxide layer and an oxide layer which is a second oxide layer disposed in this order from the first electrode side between the hole transport layer and the light-emitting layer or between the light-emitting layer and the electron transport layer, wherein a density of oxygen atoms in the second oxide layer is different from a density of oxygen atoms in the first oxide layer.