Patent ID: 8298842

Claim:
A method for manufacturing a semiconductor light-emitting device comprising: coating a substrate with photoresist; forming a mask pattern on the substrate by selectively removing the photoresist; forming protrusions on the substrate by dry-etching the substrate with the mask pattern through the use of etching gas; wet-etching the dry-etched substrate through the use of etching solution with the mask pattern remaining, the mask pattern being removed by the wet-etching; forming a first semiconductor layer on the substrate including the protrusions; forming an active layer on the first semiconductor layer; forming a second semiconductor layer on the active layer; etching predetermined portions of the active layer and second semiconductor layer until the first semiconductor layer is exposed; and forming a first electrode on a predetermined portion of the first semiconductor layer, wherein the active layer and second semiconductor layer are not formed on the predetermined portion of the first semiconductor layer, and forming a second electrode on the second semiconductor layer, wherein the process of wet-etching the substrate is carried out by using an etching solution which is obtained by mixing sulfuric acid and hydrogen peroxide in a ratio of 1:1 or 1:2.