Patent ID: 9000485
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A GaN-based semiconductor device, comprising: a GaN-based semiconductor layer including a first region, a second region and a third region between the first region and the second region; an electrode structure on at least one of the first region and the second region of the GaN-based semiconductor layer, the electrode structure including, a gate electrode over the GaN-based semiconductor layer; a gate insulation layer between the gate electrode and the GaN-based semiconductor layer; and an etching barrier layer on the gate insulation layer, the etching barrier layer over only the third region of the GaN-based semiconductor layer, wherein at least one of the first region and the second region of the GaN-based semiconductor layer has a first recess and is doped with the n-type dopant, and an upper surface of at least one of the first region and the second region of the GaN-based semiconductor layer is etched.