| 摘要 |
The present invention provides a method of making white light source by violet-LED. A phosphor powder which at least contains four elements (Zn, S, Se, O) is used with violet-LED to make white light source of LED. The phosphor powder can be excited by violet light with wavelength from 380 to 410 nm and emits yellow light with continuous wavelength from 470 nm to 670 nm. Putting suitable amount of the phosphor powder on the surface of violet-LED chip, sealing it to be a LED, after providing a current to the LED, a white light with high color rendering index is obtained.
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