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:
Jun. 02, 2026
Filed:
May. 11, 2022
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Hiroaki Toyoshima, Tokyo, JP;
Masatoshi Saito, Tokyo, JP;
Kei Yoshida, Tokyo, JP;
Masato Mitani, Tokyo, JP;
Sayaka Mizutani, Tokyo, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
An organic electroluminescence device having a cathode; an anode; and an emitting layer disposed between the cathode, wherein a first layer in an electron-transporting zone disposed between the emitting layer and the cathode contains a first compound and a second compound, the electron mobility μof the first compound is 1.0×10cm/Vs or lower, and the second compound is one or more selected from the group consisting of compounds represented by each of the following formulas (11), (12), and (13), provided that the first compound and the second compound are different compounds.