- 专利标题: Light emitting element and manufacturing method thereof
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申请号: US12008062申请日: 2008-01-08
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公开(公告)号: US20080185599A1公开(公告)日: 2008-08-07
- 发明人: Shuhei Yoshitomi , Junichiro Sakata , Masahiro Takahashi
- 申请人: Shuhei Yoshitomi , Junichiro Sakata , Masahiro Takahashi
- 专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 优先权: JP2003-019545 20030128
- 主分类号: H01L33/00
- IPC分类号: H01L33/00
摘要:
In order to provide a light emitting device which consistently emits light at the time of continuous driving in addition to obtain light emission having a high color purity in each of red, green and blue, a light emitting element according to the present invention, in which an organic compound film comprising a hole transporting material, an electron transporting material, a first impurity (first doping material), and a second impurity (second doping material) is provided between an anode and a cathode, is characterized in that the organic compound film is laminated with a first mixed region comprising the hole transporting material and the first impurity, a hole transporting region comprising the hole transporting material, a second mixed region comprising the electron transporting material and the second impurity, and an electron transporting region comprising the electron transporting material in order from the side of the anode.
公开/授权文献
- US07728518B2 Light emitting device 公开/授权日:2010-06-01
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