Patent ID: 8901599

Claim:
A semiconductor light emitting device comprising: a first conductive semiconductor layer including a first carrier blocking layer of semiconductor material; an active layer below the first conductive semiconductor layer; a second conductive semiconductor layer below the active layer; at least one second carrier blocking layer disposed in the first conductive semiconductor layer and closer to the active layer than the first carrier blocking layer; an electrode layer below the second conductive semiconductor layer; a conductive support member below the electrode layer; and a channel layer disposed around the electrode layer and disposed on the conductive support member, the channel layer formed of a conductive transmittive material, a portion of an upper surface of the channel layer exposed outside from a side surface of the second conductive semiconductor layer, wherein the first carrier blocking layer is an undoped semiconductor, wherein the channel layer includes one selected from the group consisting of ITO, IZO, IZTO, IAZO, IGZO, IGTO, AZO, and ATO, wherein the first carrier blocking layer comprises a bottom portion and an upper portion, wherein a lateral width of the upper portion is larger than a lateral width of the bottom portion, and wherein a lateral width of the second carrier blocking layer is smaller than the lateral width of the upper portion of the first carrier blocking layer.