Patent ID: 9444018
Filing Date: 2016-09-13
CPC Classification: H01L

Claim Text:
1. A light emitting diode comprising: a first semiconductor layer; an active layer on the first semiconductor layer; a second semiconductor layer on the active layer, wherein a plurality of primary three-dimensional nano-structures are distributed on a surface of the second semiconductor layer away from the active layer; the plurality of primary three-dimensional nano-structures are aligned side by side, and each of the plurality of primary 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 every two adjacent primary three-dimensional nano-structures, a depth of the first groove is smaller than a depth of the second groove, and a cross section of each of the plurality of the primary three-dimensional nano-structures is M-shaped; a protective layer on the second semiconductor layer; a cermet layer on a surface of the protective layer away from the active layer, wherein a dielectric constant of the cermet layer is a complex number comprising a real part and an imaginary part, and the real part of the dielectric constant is a negative number; a first electrode covering an entire surface of the first semiconductor layer away from the active layer; and a second electrode electrically connected to the second semiconductor layer.