Patent ID: 8759858
Filing Date: 2014-06-24
Classification: H01L

Abstract:
1. A light emitting diode, comprising: a substrate having an epitaxial growth surface and a light emitting surface opposite to the epitaxial growth surface; a first semiconductor layer located on the epitaxial growth surface, wherein the first semiconductor layer has a first surface and a second surface, and the first surface contacts the epitaxial growth surface; an active layer stacked on the second surface of the first semiconductor layer; a second semiconductor layer stacked on the active layer; a first electrode electrically connected with the first semiconductor layer; a second electrode covering an entire surface of the second semiconductor layer away from the active layer; and a plurality of three-dimensional nano-structures located on the second surface of the first semiconductor layer, wherein each of the plurality of three-dimensional nano-structures has a first peak and a second peak aligned side by side, a first groove is defined between the first peak and the second peak, a second groove is defined between each two adjacent three-dimensional nano-structures of the plurality of three-dimensional nano-structures, and a depth of the first groove is less than a depth of the second groove.