Patent ID: 8008686

Claim:
A light emitting diode chip, comprising: a substrate; a semiconductor device layer, disposed on the substrate and comprising: a first-type doped semiconductor layer, disposed on the substrate; an active layer, disposed on a portion of the first-type doped semiconductor layer; a second-type doped semiconductor layer, disposed on the active layer, wherein the second-type doped semiconductor layer has a first top surface; a current blocking layer, disposed on a portion of the first top surface of the second-type doped semiconductor layer; a current spreading layer, disposed on the second-type doped semiconductor layer covering the current blocking layer; a wall structure, disposed on the first-type doped semiconductor layer that is not covered by the active layer, wherein the wall structure surrounds the active layer and has a second top surface higher than the first top surface of the second-type doped semiconductor layer; and a plurality of electrodes, disposed on and electrically connected with the first-type doped semiconductor layer and the second-type doped semiconductor layer.