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:
Apr. 29, 2014
Filed:
May. 23, 2011
Kazuki Nishimura, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Yukitoshi Jinde, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Yukitoshi Jinde, Sodegaura, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
An organic electroluminescence device includes an anode, a cathode and layers between the anode and the cathode, the layers at least including a hole transporting layer, a first emitting layer, a second emitting layer and an electron transporting layer, in which the first emitting layer includes a first host material and a first luminescent material and the second emitting layer is continuously formed on the first emitting layer near the cathode and includes a second host material and a second luminescent material. The second host material is a monoazine derivative, a diazine derivative, or a triazine derivative. The first and second luminescent materials are different metal complexes.