Patent ID: 9029904
Filing Date: 2015-05-12
Classification: H01L

Abstract:
1. A light emitting diode, comprising: a substrate; a first semiconductor layer formed above the substrate; a luminous layer formed on a portion of the first semiconductor layer, wherein the luminous layer exposes a portion of the surface of the first semiconductor layer; a second semiconductor layer formed on the luminous layer; a current diffusion layer formed on the second semiconductor layer, wherein the current diffusion layer includes a plurality of through holes; a third semiconductor layer formed on the current diffusion layer, wherein a resistance of the current diffusion layer is greater than a resistance of the third semiconductor layer and a resistance of the second semiconductor layer; a first electrode formed on the exposed surface of the first semiconductor layer; a second electrode comprising a base portion formed on the surface of the substrate, and a plurality of comb structures extending upward vertically, wherein each of the comb structures penetrates the first semiconductor layer, the luminous layer, the second semiconductor layer, the current diffusion layer and portion of the third semiconductor layer, and each tip of the comb structures is in the third semiconductor layer; and an insulation layer covering the outer surface of the second electrode which contacts the first semiconductor layer, the luminous layer, the second semiconductor layer, the current diffusion layer, and the third semiconductor layer, wherein the insulation layer exposes the tip of each of the comb structures so that the tips contact the third semiconductor layer.