Patent ID: 7576368
Filing Date: 2009-08-18
Classification: H01C,H01L,Y10S

Abstract:
1. A vertical light emitting device, comprising: a support layer; a first-type GaN based layer over the support layer; a first electrode disposed between the support layer and the first-type GaN based layer such that the first-type GaN based layer is over the first electrode; a second-type GaN based layer over the first-type GaN based layer, wherein the second-type GaN based layer comprises undoped GaN and doped GaN, and wherein the second-type GaN based layer further comprises a surface of doped GaN; a light emitting layer disposed between the first-type GaN based layer and the second second-type GaN based layer; an undoped GaN based layer over the second-type GaN based layer; and a second electrode over the second-type GaN based layer or the undoped GaN based layer, wherein the first electrode and the second electrode are respectively located at opposite sides of the light emitting layer.