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:
Mar. 07, 2023
Filed:
Jun. 18, 2018
Applicants:
Kwansei Gakuin Educational Foundation, Nishinomiya, JP;
SK Materials Jnc Co., Ltd., Gyeonggi-do, KR;
Inventors:
Takuji Hatakeyama, Hyogo, JP;
Akio Tajima, Chiba, JP;
Akihide Mizutani, Chiba, JP;
Daisuke Baba, Chiba, JP;
Yuko Yamaga, Chiba, JP;
Assignees:
Kwansei Gakuin Educational Foundation, Hyogo, JP;
SK Materials JNC Co., Ltd., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01); C07F 5/02 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/008 (2013.01); C07F 5/027 (2013.01); C09K 11/06 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1018 (2013.01); H01L 51/5012 (2013.01); H01L 51/5016 (2013.01); H01L 51/5072 (2013.01); H01L 51/5092 (2013.01);
Abstract
By using a polycyclic aromatic compound as a material for a light-emitting layer, formed by connecting a plurality of aromatic rings with a boron atom and an oxygen, sulfur, or selenium atom, which have been substituted by a specific aryl such as anthracene, an organic EL element having at least one of excellent quantum efficiency and element life can be provided.