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:
Oct. 26, 2021
Filed:
Dec. 01, 2015
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Sfc Co., Ltd., Cheongju-si, KR;
Shuichi Hayashi, Tokyo, JP;
Naoaki Kabasawa, Tokyo, JP;
Daizou Kanda, Tokyo, JP;
Shunji Mochizuki, Tokyo, JP;
Soon-wook Cha, Cheongju-si, KR;
Sang-woo Park, Cheongju-si, KR;
Ju-man Song, Cheongju-si, KR;
Kyung-seok Jeon, Cheongju-si, KR;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
SFC Co., Ltd., Cheongju-Si, KR;
Abstract
In the organic electroluminescent device having at least an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Arto Armay be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.