Patent ID: 8790940

Claim:
A method for making a light emitting diode, comprising: providing a substrate have an epitaxial growth surface; growing a first semiconductor layer on the epitaxial growth surface of the substrate; locating a patterned mask layer on a surface of the first semiconductor layer, wherein the patterned mask layer comprises a plurality of bar-shaped protruding structures aligned side by side, and a slot is defined between each two adjacent protruding structures of the plurality of bar-shaped protruding structures to expose a portion of the first semiconductor layer; etching the exposed first semiconductor layer, wherein the each two adjacent protruding structures begin to slant face to face until they are contacting each other to form a protruding pair; forming a plurality of three-dimensional nano-structures by removing the patterned mask layer; growing an active layer on a surface of the plurality of three-dimensional nano-structures; growing a second semiconductor layer on the active layer; exposing a surface of the first semiconductor layer by removing the substrate; applying a first electrode covering and electrically connecting with the entire surface of the first semiconductor layer away from the active layer; and locating a second electrode to electrically connect with the second semiconductor layer.