发明名称 |
Light-Emitting Element, Light-Emitting Device, Display Device, Electronic Device, and Lighting Device |
摘要 |
An object is to provide a light-emitting element which uses a plurality of kinds of light-emitting dopants and has high emission efficiency. In one embodiment of the present invention, a light-emitting device, a light-emitting module, a light-emitting display device, an electronic device, and a lighting device each having reduced power consumption by using the above light-emitting element are provided. Attention is paid to F�rster mechanism, which is one of mechanisms of intermolecular energy transfer. Efficient energy transfer by F�rster mechanism is achieved by making an emission wavelength of a molecule which donates energy overlap with a local maximum peak on the longest wavelength side of a graph obtained by multiplying an absorption spectrum of a molecule which receives energy by a wavelength raised to the fourth power. |
申请公布号 |
US2013240933(A1) |
申请公布日期 |
2013.09.19 |
申请号 |
US201313799872 |
申请日期 |
2013.03.13 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
YAMAZAKI SHUNPEI;SEO SATOSHI;HIRAKATA YOSHIHARU;ISHISONE TAKAHIRO |
分类号 |
H01L33/50 |
主分类号 |
H01L33/50 |
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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