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:
Oct. 25, 2022
Filed:
Jun. 07, 2021
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Satomi Tasaki, Sodegaura, JP;
Taro Yamaki, Sodegaura, JP;
Hiroaki Itoi, Sodegaura, JP;
Yuki Nakano, Sodegaura, JP;
Yuichiro Kawamura, Sodegaura, JP;
Ryoji Maeda, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Yongguk Lee, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.