Invention Grant
- Patent Title: Organic electroluminescent element, illuminator and display
- Patent Title (中): 有机电致发光元件，照明器和显示器
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Application No.: US12082251Application Date: 2008-04-10
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Publication No.: US07862909B2Publication Date: 2011-01-04
- Inventor: Tomohiro Oshiyama , Hiroshi Kita , Eisaku Katoh
- Applicant: Tomohiro Oshiyama , Hiroshi Kita , Eisaku Katoh
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Holdings, Inc.
- Current Assignee: Konica Minolta Holdings, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz, Goodman & Chick, P.C.
- Priority: JP2003-193519 20030708
- Main IPC: H01L51/54
- IPC: H01L51/54 ; C09K11/00
Abstract:
An organic electroluminescent element comprising an anode and a cathode having therebetween an emission layer containing a phosphorescent compound and an layer adjacent to the emission layer, the layer adjacent to the emission layer being provided between the emission layer and the cathode, wherein the layer adjacent to the emission layer comprises a compound having an electron withdrawing group; and the compound exhibits a HOMO level of −5.7 to −7.0 eV and a LUMO level of −1.3 to −2.3 eV.
Public/Granted literature
- US20080233431A1 Organic electroluminescent element, illuminator and display Public/Granted day:2008-09-25
Information query
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