发明授权
- 专利标题: Organic electroluminescent element
- 专利标题(中): 有机电致发光元件
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申请号: US13980051申请日: 2012-01-20
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公开(公告)号: US08847218B2公开(公告)日: 2014-09-30
- 发明人: Kazuki Nishimura , Yukitoshi Jinde , Toshinari Ogiwara , Tetsuya Inoue , Chishio Hosokawa
- 申请人: Kazuki Nishimura , Yukitoshi Jinde , Toshinari Ogiwara , Tetsuya Inoue , Chishio Hosokawa
- 申请人地址: JP Tokyo
- 专利权人: Idemitsu Kosan Co., Ltd.
- 当前专利权人: Idemitsu Kosan Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2011-009660 20110120
- 国际申请: PCT/JP2012/051194 WO 20120120
- 国际公布: WO2012/099241 WO 20120726
- 主分类号: H01L51/50
- IPC分类号: H01L51/50 ; H05B33/14 ; C09B57/00 ; C09B57/10
摘要:
An organic electroluminescence device includes a pair of electrodes and an organic compound layer interposed therebetween. The organic compound layer includes a plurality of emitting layers including a first emitting layer and a second emitting layer, in which at least one of the first and second emitting layers contains a phosphorescent dopant material, and a space layer between the first and second emitting layers. The space layer contains a compound satisfying a relationship of the following numerical formula (1) in terms of a difference ΔST between singlet energy EgS and an energy gap Eg77K at 77K, [Numerical Formula 1] ΔST=EgS−Eg77K≦0.5 (eV) (1).
公开/授权文献
- US20130292664A1 ORGANIC ELECTROLUMINESCENT ELEMENT 公开/授权日:2013-11-07
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