Patent ID: 7695989
Filing Date: 2010-04-13
Classification: H01L

Abstract:
1. A method of manufacturing a vertical GaN-based LED, comprising: sequentially forming an undoped GaN layer, a lightly doped n-type GaN layer, an etch stop layer, an n-type GaN layer for an n-type electrode contact, an active layer, and a p-type GaN layer on a sapphire substrate; forming a p-electrode on the p-type GaN layer; forming a support layer on the p-electrode; removing the sapphire substrate using a laser lift-off (LLO) process; etching the undoped GaN layer and the lightly doped n-type GaN layer; selectively etching the etch stop layer to expose at least a portion of the n-type GaN layer for the n-type electrode contact; and forming an n-electrode on the exposed n-type GaN layer for the n-type electrode contact.