Patent ID: 7033949

Claim:
A method for manufacturing a GaN-based light-emitting diode (LED), comprising the steps of: providing a substrate; forming a GaN semiconductor epitaxy layer on said substrate, said GaN semiconductor epitaxy layer further comprising an n-type GaN contact layer, a light-emitting layer and a p-type GaN contact layer, said light-emitting layer being a light-emitting source; forming a digital penetration layer on said p-type GaN contact layer, said digital penetration layer having functions of a p-type ohmic contact layer and high transmittancy with respect to light emitted by said light-emitting layer; etching said digital penetration layer, said p-type GaN contact layer, and said light-emitting layer to form an n-metal forming area and expose a portion of said light-emitting layer as an n-type ohmic contact layer; etching said light-emitting layer and said n-type GaN contact layer to form a trench in said n-metal forming area for separating a p/n junction area; forming a first ohmic contact electrode on said digital penetration layer for said p-type ohmic contact layer; forming a second ohmic contact electrode on said n-metal forming area for said n-type ohmic contact layer; and forming pads on both said first ohmic contact electrode and said second ohmic contact electrode.