发明授权
- 专利标题: Organic EL device
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申请号: US09805244申请日: 2001-03-14
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公开(公告)号: US06603140B2公开(公告)日: 2003-08-05
- 发明人: Isamu Kobori , Kazutoshi Ohisa , Kenji Nakaya , Tetsushi Inoue
- 申请人: Isamu Kobori , Kazutoshi Ohisa , Kenji Nakaya , Tetsushi Inoue
- 优先权: JP8-235898 19960819
- 主分类号: H01L3524
- IPC分类号: H01L3524
摘要:
In an organic EL device, a light emitting layer contains a specific coumarin derivative, and a hole injecting and/or transporting layer contains a specific tetraaryldiamine derivative. Also a light emitting layer in the form of a mix layer contains a specific coumarin derivative, a specific quinacridone compound or a specific styryl amine compound. There are provided at least two light emitting layers including a light emitting layer of the mix layer type wherein at least two dopants are contained so that at least two luminescent species may emit light. There is obtained an organic EL device capable of high luminance and continuous light emission and ensuring reliability. Multi-color light emission becomes possible.
公开/授权文献
- US20020038867A1 Organic EL device 公开/授权日:2002-04-04
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