Patent ID: 9099624
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A semiconductor light emitting device comprising: a light emitting structure including: a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer; and a light extraction layer disposed on the light emitting structure, the light extraction layer including: a light-transmissive thin film layer having light transmittance, a nano-rod layer including a plurality of nano-rods disposed on the light-transmissive thin film layer, and a nano-wire layer including a plurality of nano-wires disposed on the nano-rod layer, wherein: the plurality of nano-wires have a width smaller than a width of the plurality of nano-rods, the light-transmissive thin film layer, the nano-rod layer, and the nano-wire layer have refractive indices gradually reduced in a sequential manner, and the light-transmissive thin film layer, the nano-rod layer, and the nano-wire layer have a single refractive index therein, respectively.