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:
Sep. 24, 2019
Filed:
Aug. 06, 2015
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Sfc Co., Ltd., Chungcheongbuk-do, KR;
Shuichi Hayashi, Tokyo, JP;
Daizou Kanda, Tokyo, JP;
Shunji Mochiduki, Tokyo, JP;
Se-Jin Lee, Chungcheongbuk-do, KR;
Oun-gyu Lee, Chungcheongbuk-do, KR;
Bong-Ki Shin, Chungcheongbuk-do, KR;
HODOGAYA CHEMICAL CO., LTD., Tokyo, JP;
SFC CO., LTD, Chungcheongbuk-Do, KR;
Abstract
The organic EL device of the invention has, in order, an anode, a hole transport layer, a luminous layer, an electron transport layer and a cathode. The hole transport layer includes an indenoacridan derivative represented by the following general formula (1), and the luminous layer includes an N-aromatic substituted indenoindole compound and/or an N-aromatic substituted carbazole compound. In the formula, Ais a divalent aromatic hydrocarbon group, a divalent aromatic heterocyclic group or a single bond, B is a monovalent aromatic hydrocarbon group; a monovalent aromatic heterocyclic group; or a disubstituted amino group having, as a substituent, a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group; and Rto Reach represent a hydrogen atom or an alkyl group.