发明申请
- 专利标题: LIGHT EMITTING DEVICE
- 专利标题(中): 发光装置
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申请号: US13037838申请日: 2011-03-01
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公开(公告)号: US20120008647A1公开(公告)日: 2012-01-12
- 发明人: Naotoshi MATSUDA , Iwao Mitsuishi
- 申请人: Naotoshi MATSUDA , Iwao Mitsuishi
- 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
- 优先权: JP2010-154032 20100706
- 主分类号: H01S5/028
- IPC分类号: H01S5/028 ; H01S5/00 ; H01L33/50
摘要:
Disclosed is a white light emitting device including a semiconductor light emitting element configured to emit near ultraviolet light having a peak wavelength ranging from 380 to 410 nm, a first phosphor layer and a second phosphor layer. The first phosphor layer contains a blue-emitting phosphor configured to emit blue light by the near ultraviolet light, and a red-emitting phosphor activated by trivalent europium and configured to emit red light by the near ultraviolet light. The second phosphor layer contains a green-emitting phosphor configured to emit green light by the near ultraviolet light. The semiconductor light emitting element, the first phosphor layer and the second phosphor layer are laminated in this order to emit white light.
公开/授权文献
- US09048399B2 Light emitting device 公开/授权日:2015-06-02
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