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:
Aug. 17, 2021
Filed:
Oct. 04, 2017
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Joled Inc., Tokyo, JP;
Masahiro Kawamura, Sodegaura, JP;
Emiko Kambe, Kanagawa, JP;
Akifumi Nakamura, Kanagawa, JP;
Yasunori Kijima, Kanagawa, JP;
Tadahiko Yoshinaga, Kanagawa, JP;
Shigeyuki Matsunami, Kanagawa, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
JOLED Inc., Tokyo, JP;
Abstract
An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).