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:
Apr. 16, 2018
Nippon Steel Chemical & Material Co., Ltd., Tokyo, JP;
Junya Ogawa, Tokyo, JP;
Masashi Tada, Tokyo, JP;
NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., Tokyo, JP;
Abstract
There is provided an organic EL element having high efficiency and high driving stability despite having a low driving voltage. An organic electroluminescent element has a light-emitting layer between an anode and a cathode which face each other, and the light-emitting layer contains a first host selected from among indolocarbazole compounds represented by formula (1), a second host selected from among biscarbazole compounds represented by formula (2), and a light-emitting dopant material:
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile