发明申请
- 专利标题: LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
- 专利标题(中): 发光元件,发光装置,电子装置和照明装置
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申请号: US12627142申请日: 2009-11-30
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公开(公告)号: US20100133523A1公开(公告)日: 2010-06-03
- 发明人: Hiromi NOWATARI , Satoshi SEO , Nobuharu OHSAWA , Tetsuo TSUTSUI
- 申请人: Hiromi NOWATARI , Satoshi SEO , Nobuharu OHSAWA , Tetsuo TSUTSUI
- 申请人地址: JP Atsugi
- 专利权人: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- 当前专利权人: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- 当前专利权人地址: JP Atsugi
- 优先权: JP2008-306153 20081201; JP2009-130539 20090529
- 主分类号: H01L51/50
- IPC分类号: H01L51/50
摘要:
Light-emitting elements in which an increase of driving voltage can be suppressed are provided. Light-emitting devices whose power consumption is reduced by including such light-emitting elements are also provided. In a light-emitting element having an EL layer between an anode and a cathode, a first layer in which carriers can be produced is formed between the cathode and the EL layer and in contact with the cathode, a second layer which transfers electrons produced in the first layer is formed in contact with the first layer, and a third layer which injects the electrons received from the second layer into the EL layer is formed in contact with the second layer.
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