发明申请
- 专利标题: Organic El Device
- 专利标题(中): 有机El设备
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申请号: US11721272申请日: 2005-10-20
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公开(公告)号: US20080003455A1公开(公告)日: 2008-01-03
- 发明人: Chong Li , Hiroshi Kimura , Koji Kawaguchi , Yutaka Terao , Toshio Hama
- 申请人: Chong Li , Hiroshi Kimura , Koji Kawaguchi , Yutaka Terao , Toshio Hama
- 申请人地址: JP Kawasaki-ku, Kawasaki 210-0856
- 专利权人: FUJI ELECTRIC HOLDINGS CO., LTD.
- 当前专利权人: FUJI ELECTRIC HOLDINGS CO., LTD.
- 当前专利权人地址: JP Kawasaki-ku, Kawasaki 210-0856
- 优先权: JP2004-355917 20041208
- 国际申请: PCT/JP05/19273 WO 20051020
- 主分类号: B32B9/00
- IPC分类号: B32B9/00 ; H01J1/63
摘要:
A white organic EL element structure exhibiting a good emission efficiency in which the emission color does not vary with current application time. The organic EL element has an organic EL layer sandwiched by a pair of electrodes, characterized in that wherein the organic EL layer includes at least a carrier recombination layer and one or more of carrier nonrecombination layers the carrier recombination layer emits blue or blue green EL light having a peak wavelength of 400-500 nm through recombination of carriers injected into the organic EL element, the carrier nonrecombination layer contains a host material having carrier injection/transportation ability and absorbing at least a part of the EL light and one or more of kinds of PL emission dye material emitting PL light of lower energy than that of the EL light, and the distance between the carrier recombination layer and the carrier nonrecombination layer is 15 nm or above.
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