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:
Nov. 30, 2021
Filed:
Aug. 09, 2017
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Kei Yoshizaki, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Abstract
An organic electroluminescence device includes an anode, an emitting layer, and a cathode. The emitting layer contains a first compound, a second compound, and a third compound. An ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy the numerical expression.0≤2−1≤0.8[] The first compound is a delayed fluorescent compound. The second compound is a fluorescent compound. The third compound has an electron mobility of 1×10cm/(V·s) or more.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile