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. 26, 2016
Filed:
Nov. 22, 2011
Yuichiro Kawamura, Sodegaura, JP;
Hiroyuki Saito, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Masahiro Kawamura, Sodegaura, JP;
Yukitoshi Jinde, Sodegaura, JP;
Hirokatsu Ito, Sodegaura, JP;
Takayasu Sado, Sodegaura, JP;
Sayaka Mizutani, Sodegaura, JP;
Yuichiro Kawamura, Sodegaura, JP;
Hiroyuki Saito, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Masahiro Kawamura, Sodegaura, JP;
Yukitoshi Jinde, Sodegaura, JP;
Hirokatsu Ito, Sodegaura, JP;
Takayasu Sado, Sodegaura, JP;
Sayaka Mizutani, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
An organic electroluminescence device that includes an anode, an emitting layer that includes a host and a fluorescent dopant, an electron transporting zone, a cathode, a blocking layer adjacent to the emitting layer in the electron transporting zone where the blocking layer includes an aromatic heterocyclic derivative with an azine ring and where the triplet energy E(eV) of the aromatic heterocyclic derivative is larger than a triplet energy E(eV) of the host.