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:
Feb. 27, 2018
Filed:
Dec. 24, 2014
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Toshinari Ogiwara, Sodegaura, JP;
Kei Yoshida, Sodegaura, JP;
Ryohei Hashimoto, Sodegaura, JP;
Yumiko Mizuki, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/08 (2006.01); H01L 51/00 (2006.01); C07D 405/14 (2006.01); C07D 487/14 (2006.01); C07D 235/08 (2006.01); C07D 403/14 (2006.01); C07D 307/91 (2006.01); H01L 51/50 (2006.01); C09K 11/06 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 235/08 (2013.01); C07D 307/91 (2013.01); C07D 403/14 (2013.01); C07D 405/14 (2013.01); C07D 487/14 (2013.01); C09K 11/06 (2013.01); H01L 51/006 (2013.01); H01L 51/0054 (2013.01); H01L 51/0067 (2013.01); H01L 51/0071 (2013.01); H01L 51/0073 (2013.01); H01L 51/0074 (2013.01); H01L 51/0094 (2013.01); H01L 51/5004 (2013.01); H01L 51/5028 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1059 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/1092 (2013.01); C09K 2211/1096 (2013.01); H01L 51/0052 (2013.01); H01L 51/0056 (2013.01); H01L 51/5016 (2013.01); H01L 51/5056 (2013.01); H01L 51/5064 (2013.01); H01L 51/5072 (2013.01); H01L 51/5088 (2013.01); H01L 51/5092 (2013.01); H01L 51/5096 (2013.01); H01L 2251/55 (2013.01);
Abstract
An organic electroluminescence device includes: an anode; an emitting layer; and a cathode, the emitting layer containing a first material, a second material and a third material, the first material being a fluorescent material, the second material being a delayed fluorescent material, the third material having a singlet energy larger than a singlet energy of the second material.