- 专利标题: Light emitting device and composition useful for production of same light emitting device
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申请号: US16333871申请日: 2017-09-27
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公开(公告)号: US11271166B2公开(公告)日: 2022-03-08
- 发明人: Toshiaki Sasada , Ryuji Matsumoto , Tomoyasu Yoshida
- 申请人: Sumitomo Chemical Company, Limited
- 申请人地址: JP Tokyo
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: JP Tokyo
- 代理机构: Panitch Schwarze Belisario & Nadel LLP
- 优先权: JPJP2016-190842 20160929
- 国际申请: PCT/JP2017/034966 WO 20170927
- 国际公布: WO2018/062278 WO 20180405
- 主分类号: H01L51/50
- IPC分类号: H01L51/50 ; H01L51/00
摘要:
A light emitting device having an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound (T) in which the absolute value of the difference between the energy level at the lowest triplet excited state and the energy level at the lowest singlet excited state is 0.5 eV or less and not containing a phosphorescent metal complex. The second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit and the energy level at the lowest triplet excited state of the polymer compound is 2.25 eV or more.
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