Point light source light-emitting diode structure and producing method thereof

A method for preparing luminous diode of point light source includes providing a baseboard and forming a polycrystalline structure on baseboard as said structure including buffer layer, multiple n type or p type of limited layer, and active layer; forming the first electrode layer said on structure; joining an insulation layer and polycrystalline structure with the first electrode layer; joining a metal layer and the first electrode layer with said insulation layer; patterning metal layer to form a contact layer and connection bridge in it ; etching polycrystalline structure to form a lighting region; forming the second electrode; depositing and patterning passivation layer to for wiring layer.