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. 27, 2022
Filed:
Jul. 06, 2018
Applicant:
Joled Inc., Tokyo, JP;
Inventor:
Kosuke Mishima, Tokyo, JP;
Assignee:
JOLED INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/52 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5076 (2013.01); H01L 51/50 (2013.01); H01L 51/5092 (2013.01); H01L 51/5096 (2013.01); H01L 51/5004 (2013.01); H01L 51/5265 (2013.01); H01L 2251/301 (2013.01); H01L 2251/552 (2013.01);
Abstract
An organic electroluminescent element includes, in order, a first electrode, an organic light-emitting layer, a buffer layer, a metal thin film, an organic electron transport layer, and a second electrode. The buffer layer includes an electrically-conductive organic material. The metal thin film includes a metal or a metal alloy. The organic electron transport layer is doped with a metal. The metal in the metal thin film is the same as the metal doped in the organic electron transport layer. The metal alloy in the metal thin film includes a metal that is the same as the metal doped in the organic electron transport layer.