发明授权
- 专利标题: Fluorescent material and light-emitting device
- 专利标题(中): 荧光材料和发光装置
-
申请号: US12329966申请日: 2008-12-08
-
公开(公告)号: US07658866B2公开(公告)日: 2010-02-09
- 发明人: Yoshinori Murazaki , Shinpei Kinoshita , Masatoshi Kameshima , Suguru Takashima , Hiroto Tamaki
- 申请人: Yoshinori Murazaki , Shinpei Kinoshita , Masatoshi Kameshima , Suguru Takashima , Hiroto Tamaki
- 申请人地址: JP Anan-shi
- 专利权人: Nichia Corporation
- 当前专利权人: Nichia Corporation
- 当前专利权人地址: JP Anan-shi
- 代理机构: Global IP Counselors, LLP
- 优先权: JP2003-367159 20031028; JP2004-124889 20040421
- 主分类号: H01L33/00
- IPC分类号: H01L33/00 ; C09K11/64 ; C09K11/08 ; C09K11/55 ; C09K11/54 ; C09K11/80 ; C09K11/59 ; C09K11/66 ; C09K11/65 ; C09K11/67
摘要:
A fluorescent material includes first and second phosphors. The first phosphor is a light-storing phosphor, which is represented by the general formula (M1-a-bEuaQb)Al2O4, wherein M is one type selected from the group consisting of Mg, Ca, Ba, Sr and Zn; Q is one type selected from the group consisting of Pr, Nd, Dy, Er and Ho; a is a number that satisfies 0.0001≦a≦0.5; and b is a number that satisfies 0.010≦b≦0.5. When the fluorescent material is excited for about 15 minutes by ultraviolet irradiation having about 365.0 nm wavelength with an intensity of 0.5 mW/cm2, and the color of the afterglow of the fluorescent material is measured 1 minute and 10 minutes after excitation is terminated, an amount of change between chromaticity measured 1 minute after excitation and that measured 10 minutes is in the range of −0.001≦x≦0.009 and −0.009≦y≦0.006.
公开/授权文献
- US20090085458A1 FLUORESCENT MATERIAL AND LIGHT-EMITTING DEVICE 公开/授权日:2009-04-02
信息查询
IPC分类: