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. 13, 2018
Filed:
Jan. 20, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Takayuki Horiuchi, Tokyo, JP;
Kengo Kishino, Tokyo, JP;
Hirokazu Miyashita, Tokyo, JP;
Yosuke Nishide, Kawasaki, JP;
Tetsuya Kosuge, Yokohama, JP;
Naoki Yamada, Inagi, JP;
Jun Kamatani, Tokyo, JP;
Akihito Saitoh, Gotemba, JP;
Shigemoto Abe, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is an organic light-emitting element having high light-emitting efficiency and a long element lifetime, the organic light-emitting element including an anode, a cathode, and an organic compound layer placed between the anode and the cathode, in which: the organic compound layer includes an emission layer; the emission layer includes a host and a guest; the host is an aromatic hydrocarbon compound; the guest is an iridium complex of a specific structure; and a content of the host is 50 wt % or more with reference to the total amount of the constituent materials for the emission layer.