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:
Jul. 30, 2018
Filed:
Dec. 15, 2016
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Kazuki Nishimura, Sodegaura, JP;
Tetsuya Inoue, Sodegaura, JP;
Yumiko Mizuki, Sodegaura, JP;
Nobuhiro Yabunouchi, Sodegaura, JP;
Mitsuru Eida, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Abstract
An organic electroluminescence deviceincludes: an anodea cathodeopposed to the anodeand an emitting layerprovided between the anodeand the cathodeThe emitting layercontains first and second host materials and a luminescent material. The first host material has a partial structure represented by at least one of the following formulae (1) and (2) while the second host material has a partial structure represented by the following formula (3). Az represents a substituted or unsubstituted aromatic heterocyclic group containing a nitrogen-containing six-membered ring. Wis an aromatic hydrocarbon group substituted by at least one cyano group (CN) or an aromatic heterocyclic group substituted by at least one cyano group (CN). Aris a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted aromatic heterocyclic group, but is not an aromatic heterocyclic group containing a nitrogen-containing six-membered ring.—Az—(W)  (1)—Az—(CN)  (2)—Ar—(CN)  (3)