Patent ID: 9484494
Filing Date: 2016-11-01
CPC Classification: H01L

Claim Text:
1. A semiconductor light emitting device having a plurality of semiconductor layers having p-type dopant, comprising: a first semiconductor layer; a second semiconductor layer disposed on the first semiconductor layer; an active layer disposed between the first semiconductor layer and the second semiconductor layer; a third semiconductor layer disposed on the second semiconductor layer; and a fourth semiconductor layer disposed on the third semiconductor layer, wherein the third semiconductor layer is disposed between the second semiconductor layer and the fourth semiconductor layer, wherein the second semiconductor layer is formed of an InAlGaN semiconductor layer, wherein the third semiconductor layer is formed of an AlGaN semiconductor layer, wherein the fourth semiconductor layer is formed of a GaN semiconductor layer, and wherein the third semiconductor layer has a concentration of a p-type dopant less than that of each of the second and fourth semiconductor layers.