Patent ID: 9577145
Date: 2017-02-21
CPC Classifications: H01L

Claim:
1. A semiconductor light emitting device, comprising: a conductive supporting member having a top surface and a bottom surface spaced from each other in a vertical direction; a second electrode layer disposed under the bottom surface of the conductive supporting member, the second electrode layer having a central portion and a peripheral portion; a protecting layer under the peripheral portion of the second electrode layer; an ohmic contact layer disposed under a bottom surface of the second electrode layer; a light emitting structure disposed under a bottom surface of the ohmic contact layer wherein the light emitting structure comprises a first conductive type semiconductor layer disposed under the bottom surface of the ohmic contact layer, a second conductive type semiconductor layer between the first conductive type semiconductor layer and the ohmic contact layer, and an active layer between the first and second conductive type semiconductor layers; a plurality of grooves disposed in an inner region of the light emitting structure, each groove having a width and an upper surface located between a top surface of the second conductive type semiconductor layer and a bottom surface of the second conductive type semiconductor layer; and a first electrode disposed under a bottom surface of the light emitting structure, wherein the ohmic contact layer is formed in a pattern corresponding to the grooves, wherein a width and a length of the ohmic contact layer is greater than a width and a length of the grooves, wherein each groove has a total depth from a bottom surface of the first conductive type semiconductor layer to the upper surface of the groove, and wherein the total depth of the groove is shorter than that of the light emitting structure.