Invention Grant
- Patent Title: Organic electroluminescent element
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Application No.: US15558898Application Date: 2016-03-03
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Publication No.: US11600786B2Publication Date: 2023-03-07
- Inventor: Junya Ogawa , Takahiro Kai , Masanori Hotta , Yuji Ikenaga , Mitsuru Sakai , Masashi Tada , Tokiko Ueda , Katsuhide Noguchi
- Applicant: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
- Current Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2015-070126 20150330
- International Application: PCT/JP2016/056643 WO 20160303
- International Announcement: WO2016/158191 WO 20161006
- Main IPC: H01L51/00
- IPC: H01L51/00 ; C09K11/06 ; H01L51/50 ; C07D209/88 ; C07D405/14 ; C07D487/04 ; C09K11/02

Abstract:
Provided is an organic EL device having high efficiency and high driving stability while being driven at a low voltage. The organic electroluminescent device includes one or more light-emitting layers between an anode and a cathode opposite to each other. At least one of the light-emitting layers contains a host material and a light-emitting dopant, and (i) a first host formed of an indolocarbazole compound having one or two indolocarbazole rings, and (ii) a second host formed of a carbazole compound having a plurality of carbazole rings and having a bond structure represented by the following general formula (3) are used as the host material.
Public/Granted literature
- US20180083201A1 ORGANIC ELECTROLUMINESCENT ELEMENT Public/Granted day:2018-03-22
Information query
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