| 摘要 |
An LED base plate enabling the LED to emit high luminance white light. The base plate has a reflective surface, and protrusions disposed on the reflective surface have top portions formed with curved surfaces. The protrusions have bottom widths of 2 to 4 micrometers and heights of 1.2 to 1.8 micrometers, with adjacent protrusions having spaces of 0.6 to 3 micrometers. An InGaN epitaxy layer is coated on the reflective surface of the base plate and emits ultraviolet of wavelength in the range of 380 to 410 nanometer when the InGaN epitaxy layer is electrified. Ultraviolet light reflected by the reflective surface of the base plate and the protrusions stimulates and mixes fluorescent compounds of zinc oxide and yttrium aluminum garnet to generate complementary light of ultraviolet light. High luminance white light scatteringly emitted is used for illumination.
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