发明授权
- 专利标题： Zinc oxide phosphor, process for producing the same and light emitting device
- 专利标题（中）： 氧化锌荧光粉，其制造方法和发光装置
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申请号： US10554724申请日： 2004-04-30
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公开(公告)号： US07535162B2公开(公告)日： 2009-05-19
- 发明人: Naoki Ohashi , Takamasa Ishigaki , Hiroyuki Taguchi , Isao Sakaguchi , Hajime Haneda , Takashi Sekiguchi
- 申请人： Naoki Ohashi , Takamasa Ishigaki , Hiroyuki Taguchi , Isao Sakaguchi , Hajime Haneda , Takashi Sekiguchi
- 申请人地址： JP Tsukuba-shi
- 专利权人： National Institute for Materials Science
- 当前专利权人： National Institute for Materials Science
- 当前专利权人地址： JP Tsukuba-shi
- 代理机构： Westerman, Hattori, Daniels & Adrian, LLP.
- 优先权： JP2003-124743 20030430
- 国际申请： PCT/JP2004/006402 WO 20040430
- 国际公布： WO2004/096949 WO 20041111
- 主分类号： H01J1/62
- IPC分类号： H01J1/62
摘要：
The present invention relates to a zinc oxide phosphor characterized by emitting visible light with a broad emission spectrum close to white, and a process for producing the same. A powder prepared by adding a plurality of additives to zinc oxide and heat-treating the resulting mixture is further hydrogenated to improve the luminous efficiency of the zinc oxide phosphor. The zinc oxide phosphor providing a broad emission spectrum covering a wavelength range over substantially the entire visible region can be applied to a white diode, a white vacuum fluorescent display, and a fluorescent paint.