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:
Dec. 05, 2017
Filed:
Sep. 01, 2014
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Makoto Nagaoka, Tokyo, JP;
Kouki Kase, Tokyo, JP;
Shigeru Kusano, Tokyo, JP;
Teruaki Koizumi, Tokyo, JP;
HODOGAYA CHEMICAL CO., LTD., Tokyo, JP;
Abstract
According to the present invention, there are provided a benzopyridoindole derivative represented by the following general formula (1); and an organic EL element including a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the above derivative is used as a constituent material for the at least one organic layer. The benzopyridoindole derivative of the present invention is excellent in electron injection/transport performance, has hole blocking capability, is highly stable in a thin film state, and excels in various characteristics. Thus, it is useful as a material for an organic EL element with a high efficiency, a low driving voltage, and high durability.