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:
Oct. 27, 2020
Filed:
Sep. 07, 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 51/508 (2013.01); H01L 51/5092 (2013.01); H01L 51/5265 (2013.01); H01L 51/5234 (2013.01);
Abstract
An organic electroluminescent element according to one embodiment of the disclosure includes, in order, an anode, an organic light-emitting layer, an electron transport layer, an intermediate layer, and a cathode. The electron transport layer includes a sodium fluoride layer. The intermediate layer includes an ytterbium layer. The ytterbium layer is in contact with the sodium fluoride layer on side of the cathode.