Patent ID: 8288794

Claim:
A nitride semiconductor light-emitting device comprising: a processed substrate comprising a nitride semiconductor, said substrate having a depressed portion, which is an engraved region, and a ridge portion, which is a non-engraved region; a nitride semiconductor layer portion formed on a surface of both the depressed portion and the ridge portion and composed of a plurality of nitride semiconductor layers; and inflow prevention walls formed on the ridge portion so that an inflow prevention wall is disposed at each end of the ridge portion near the depressed portion, wherein the height of the nitride semiconductor layer portion is greater at the end of the ridge portion near the depressed portion than elsewhere in the ridge portion, the nitride semiconductor layer portion forms a continuous film over the inflow prevention walls, the depressed portion, and the ridge portion, and the inflow prevention wall comprises SiO 2 , Al 2 O 3 , TiO 2 , ZrO, or W.