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. 03, 2017
Filed:
Nov. 30, 2016
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Inventors:
Tsunenori Suzuki, Kanagawa, JP;
Shogo Uesaka, Kanagawa, JP;
Ryohei Yamaoka, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/15 (2006.01); H01L 29/08 (2006.01); H01L 29/26 (2006.01); H01L 31/12 (2006.01); H01L 33/00 (2010.01); H01L 35/24 (2006.01); H01L 51/00 (2006.01); H01L 51/52 (2006.01); H01L 51/50 (2006.01); H01L 27/32 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5278 (2013.01); H01L 27/322 (2013.01); H01L 27/3209 (2013.01); H01L 27/3211 (2013.01); H01L 51/5012 (2013.01); H01L 51/006 (2013.01); H01L 51/0052 (2013.01); H01L 51/0054 (2013.01); H01L 51/0058 (2013.01); H01L 51/0072 (2013.01); H01L 51/0074 (2013.01); H01L 51/0077 (2013.01); H01L 51/0085 (2013.01); H01L 51/0091 (2013.01); H01L 2251/53 (2013.01);
Abstract
A tandem light-emitting element in which generation of crosstalk can be suppressed even when the element is applied to a high-definition display is provided. In the tandem light-emitting element, a layer in contact the anode side of an intermediate layer contains 2,9-bis(naphthalen-2-yl)-4,7-diphenyl-1,10-phenanthroline (abbreviation: NBPhen).