发明授权
- 专利标题: Light-emitting device, white light-emitting device, illuminator, and image display
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申请号: US11909009申请日: 2006-03-17
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公开(公告)号: US08232717B2公开(公告)日: 2012-07-31
- 发明人: Naoto Kijima , Yasuo Shimomura , Hideaki Kaneda , Kimiya Takeshita
- 申请人: Naoto Kijima , Yasuo Shimomura , Hideaki Kaneda , Kimiya Takeshita
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Chemical Corporation
- 当前专利权人: Mitsubishi Chemical Corporation
- 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: JP2005-080033 20050318; JP2005-092976 20050328; JP2005-103148 20050331; JP2005-151175 20050524; JP2005-178377 20050617
- 国际申请: PCT/JP2006/305455 WO 20060317
- 国际公布: WO2006/098450 WO 20060921
- 主分类号: H01L33/50
- IPC分类号: H01L33/50 ; H01L33/52
摘要:
To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x1(17.5) and the color coordinate y1(17.5) of the light emitted at a driving current density of 17.5 A/cm2 and the color coordinate x1(70) and the color coordinate y1(70) of the light emitted at a driving current density of 70 A/cm2 satisfy the following Expressions (D) and (E): −0.006≦x1(17.5)−x1(70)≦0.006 (D), −0.006≦y1(17.5)−y1(70)≦0.006 (E).
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