发明授权
- 专利标题: Light emitting device
- 专利标题(中): 发光装置
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申请号: US13677828申请日: 2012-11-15
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公开(公告)号: US08592850B2公开(公告)日: 2013-11-26
- 发明人: Toshiki Hikosaka , Takahiro Sato , Iwao Mitsuishi , Shinya Nunoue
- 申请人: Toshiki Hikosaka , Takahiro Sato , Iwao Mitsuishi , Shinya Nunoue
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2009-290554 20091222
- 主分类号: H01L33/00
- IPC分类号: H01L33/00
摘要:
According to one embodiment, a light emitting device includes a semiconductor light emitting element to emit a first light, a mounting member, first and second wavelength conversion layers and a transparent layer. The first wavelength conversion layer is provided between the element and the mounting member in contact with the mounting member. The first wavelength conversion layer absorbs the first light and emits a second light having a wavelength longer than a wavelength of the first light. The semiconductor light emitting element is disposed between the second wavelength conversion layer and the first wavelength conversion layer. The second wavelength conversion layer absorbs the first light and emits a third light having a wavelength longer than the wavelength of the first light. The transparent layer is provided between the element and the second wavelength conversion layer. The transparent layer is transparent to the first, second, and third lights.
公开/授权文献
- US20130069098A1 LIGHT EMITTING DEVICE 公开/授权日:2013-03-21