Patent ID: 9202977
Filing Date: 2015-12-01
Classification: H01L

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