发明名称 |
LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, LIGHTING DEVICE, AND ELECTRONIC DEVICE |
摘要 |
<p>A light-emitting element is provided, in which n (n is a natural number of two or more) EL layers are provided between an anode and a cathode. Between the m-th (m is a natural number, 1≰m≰n−1) EL layer and the (m+1)-th EL layer, a first layer containing any of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, and a rare earth metal compound, a second layer containing a substance having high electron-transport properties in contact with the first layer, and a charge-generation layer containing a substance having high hole-transport properties and an acceptor substance in contact with the second layer are provided in this order over the anode. The charge-generation layer does not have a peak of an absorption spectrum in a visible light region.</p> |
申请公布号 |
EP2481264(A1) |
申请公布日期 |
2012.08.01 |
申请号 |
EP20100813608 |
申请日期 |
2010.08.05 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO, LTD. |
发明人 |
NOWATARI, HIROMI;SEO, SATOSHI |
分类号 |
H05B33/12;H01L51/52;H01L51/54 |
主分类号 |
H05B33/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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