Patent ID: 9490409
Filing Date: 2016-11-08
CPC Classification: H01L

Claim Text:
1. A light emitting diode (LED) chip, comprising: a first type semiconductor layer; a light-emitting layer, disposed on the first type semiconductor layer; a second type semiconductor layer, disposed on the light-emitting layer; a current blocking layer, disposed on the second type semiconductor layer; a transparent conductive layer disposed on the second type semiconductor layer and covered the current blocking layer; and an electrode, disposed on the transparent conductive layer corresponding to the current blocking layer; wherein the current blocking layer and the electrode respectively have a first width and a second width in a cross section view, and the first width of the current blocking layer is larger than the second width of the electrode, wherein the current blocking layer comprises a plurality of high refractive index layers and a plurality of low refractive index layers, and the high refractive index layers and the low refractive index layers are alternately stacked, wherein the ratio of the first width to the second width ranges from 1.4 to 2.6.