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:
Dec. 27, 2016
Filed:
Feb. 06, 2013
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventors:
Yumiko Mizuki, Chiba, JP;
Mitsunori Ito, Chiba, JP;
Tetsuya Inoue, Chiba, JP;
Kumiko Hibino, Chiba, JP;
Kazuki Nishimura, Chiba, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H01L 51/00 (2006.01); C07D 403/10 (2006.01); C07D 403/14 (2006.01); C07D 487/04 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 403/10 (2013.01); C07D 403/14 (2013.01); C07D 487/04 (2013.01); H01L 51/0067 (2013.01); H01L 51/0071 (2013.01); H01L 51/0074 (2013.01); H01L 51/0085 (2013.01); H01L 51/5024 (2013.01); H01L 2251/5384 (2013.01);
Abstract
An organic electroluminescence device employing a specific biscarbazole derivative having a cyano group as a first host and a compound having both a carbazole structure and a nitrogen-containing aromatic heteroring as a second host. The organic electroluminescence device has a prolonged lifetime.