LED WHITE LIGHT SOURCE BASED ON METAL WIRING BOARD

摘要

There is provided a white light source using LED as luminous body, which includes a taper light reflecting bowl formed on the metal wiring board, alloy coating layer coated in the center of the light reflecting bowl, blue light LED chip having high power bonded on the alloy coating layer, transparent epoxy covering the surface of LED chip, light transmission layer formed on the taper light reflecting bowl, wherein yellow fluorescent material is mixed in the light transmission layer. The white light source is used in illumination field.