| 发明名称 |
WHITE LIGHT-EMITTING DEVICE, BACKLIGHT, LIQUID CRYSTAL DISPLAY DEVICE AND ILLUMINATING DEVICE |
| 摘要 |
A white light emitting device includes a blue light emitting diode chip that emits blue light in a specific wavelength band, a first resin layer that seals the blue light emitting diode chip and includes a cured product of silicone resin, and a second resin layer that covers the first resin layer and includes phosphor powder, which absorbs the blue light and emits light in a specific wavelength band, and a cured product of transparent resin. The phosphor powder has a composition represented by the following Formula (1): (Sr1-x-yBaxEuy)2SiO4(1) (in Formula (1), x and y satisfy a condition that 0.05<x<0.5 and 0.05<y<0.3.) The first resin layer has thickness within a range of 200 mum to 2000 mum. The white light emitting device has high luminance for a long period. |
| 申请公布号 |
KR20100127278(A) |
申请公布日期 |
2010.12.03 |
| 申请号 |
KR20107023143 |
申请日期 |
2009.04.15 |
| 申请人 |
KABUSHIKI KAISHA TOSHIBA;TOSHIBA MATERIALS CO., LTD. |
发明人 |
ISHII TSUTOMU;TAKEUCHI HAJIME;SAKAI RYO;OOYA YASUMASA;SHIRAKAWA YASUHIRO |
| 分类号 |
H01L33/50;C09K11/59;H01L33/62 |
主分类号 |
H01L33/50 |
| 代理机构 |
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