Invention Grant
- Patent Title: Organic electroluminescent element
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Application No.: US14414406Application Date: 2013-07-11
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Publication No.: US09614166B2Publication Date: 2017-04-04
- Inventor: Takahiro Kai , Hideki Tanaka
- Applicant: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
- Current Assignee: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Cheng Law Group, PLLC
- Priority: JP2012-160344 20120719
- International Application: PCT/JP2013/069005 WO 20130711
- International Announcement: WO2014/013936 WO 20140123
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00 ; C07D405/14 ; C07D409/14 ; H05B33/20 ; C09K11/06 ; H01L51/52

Abstract:
Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction. The organic electroluminescent device includes, between an anode and cathode laminated on a substrate, a plurality of organic layers. At least one layer of the organic layers contains a carbazole compound represented by the following general formula (1) having two to three structures in each of which a carbazole ring and a dibenzofuran or dibenzothiophene ring are bonded to each other at 1- and 4-positions. In the formula (1), A represents an n-valent aromatic hydrocarbon group or aromatic heterocyclic group, n represents an integer of 2 or 3, and X represents oxygen or sulfur.
Public/Granted literature
- US20150214495A1 ORGANIC ELECTROLUMINESCENT ELEMENT Public/Granted day:2015-07-30
Information query
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