Patent ID: 8664020

Claim:
A method of manufacturing a semiconductor light emitting device, the method comprising: stacking a first conductivity-type semiconductor layer, an active layer and a second conductivity-type semiconductor layer on a substrate; stacking a mask layer on a top surface of the second conductivity-type semiconductor layer, the mask layer being an oxide layer formed of SiO 2 ; annealing the mask layer to be agglomerated and to form a plurality of mask patterns having the form of droplets; and dry etching the second conductivity-type semiconductor layer on which the mask patterns are formed, to form light extraction patterns in a top portion of the second conductivity-type semiconductor layer, the light extraction patterns each having a columnar portion and a hemispherical top portion, wherein the mask patterns are not removed after the step of dry etching the second conductivity-type semiconductor layer on which the mask patterns are formed.