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:
Jan. 31, 2012
Filed:
Sep. 26, 2008
Jun Endo, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Toshihiro Iwakuma, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Tadahiko Yoshinaga, Tokyo, JP;
Emiko Kambe, Tokyo, JP;
Yasunori Kijima, Tokyo, JP;
Jun Endo, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Toshihiro Iwakuma, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Tadahiko Yoshinaga, Tokyo, JP;
Emiko Kambe, Tokyo, JP;
Yasunori Kijima, Tokyo, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
An organic EL device includes: an anode, a cathode and an organic thin-film layer interposed between the anode and the cathode, in which the organic thin-film layer includes: an emitting layer containing a host material and a phosphorescent material; and a hole transporting layer provided adjacent to the anode relative to the emitting layer. The hole transporting layer includes a first hole transporting layer and a second hole transporting layer that are sequentially layered on the anode, in which the first hole transporting layer contains an amino compound substituted by an aromatic substituent represented by a formula (1) below and the second hole transporting layer contains at least one of compounds represented by formulae (2) to (5) below.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile