发明名称 |
WHITE LIGHT SOURCE, BACKLIGHT, LIQUID CRYSTAL DISPLAY AND ILLUMINATOR |
摘要 |
<p>A white light source comprises an insulating substrate, a light emitting diode chip arranged on the insulating substrate and emitting ultraviolet light having a wavelength of 330-410 nm, and a phosphor layer formed to cover the light emitting diode chip and containing a red light emitting phosphor, a green light emitting phosphor and a blue light emitting phosphor dispersed into a transparent cured resin as a phosphor, wherein t and L satisfy a relation 3.2=t/L, assuming the shortest distance between the surface of the phosphor layer and the outer circumference of the light emitting diode chip is t (mm), and an average free path defined by the following expression (1) is L (mm); L=1/(n·s) (1) (n: number of phosphors per unit volume (pcs/mm3), s: average cross-section area of phosphors in the phosphor layer (mm2)). The white light source has good distribution properties of luminous intensity.</p> |
申请公布号 |
WO2009145259(A1) |
申请公布日期 |
2009.12.03 |
申请号 |
WO2009JP59780 |
申请日期 |
2009.05.28 |
申请人 |
KABUSHIKI KAISHA TOSHIBA;TOSHIBA MATERIALS CO., LTD.;INOUE, TETSUO;TAKEUCHI, HAJIME;OOYA, YASUMASA;SHIMAOOGI, TOSHIO;SHIRAKAWA, YASUHIRO |
发明人 |
INOUE, TETSUO;TAKEUCHI, HAJIME;OOYA, YASUMASA;SHIMAOOGI, TOSHIO;SHIRAKAWA, YASUHIRO |
分类号 |
F21Y101/02;G02F1/13357;H01L33/50;H01L33/54 |
主分类号 |
F21Y101/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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