Patent ID: 8168966
Filing Date: 2012-05-01
Classification: B82Y,G02F,H01L,H01S,H04N

Abstract:
1. A GaN-based semiconductor light-emitting device comprising: (A) a first GaN-based compound semiconductor layer having n-type conductivity; (B) an active layer having: (C) a second GaN-based compound semiconductor layer having p-type conductivity, the second region of the active layer extending from the second GaN-based compound layer to a thickness of approximately (t wherein the first GaN-based compound layer is located closer to a substrate than the second GaN-based compound layer, wherein the well layers are disposed in the first and second regions of the active layer and the thicknesses of successive barrier layers decrease or remain the same from the first GaN-based compound semiconductor layer side to the second GaN-based compound semiconductor layer side so as to satisfy the relation d wherein the thicknesses of the barrier layers decrease at least twice from the first GaN-based compound semiconductor layer side to the second GaN-based compound semiconductor layer side.