Patent ID: 8729562
Filing Date: 2014-05-20
Classification: H01L

Abstract:
1. A semiconductor device comprising: a GaN-based layered body having an opening; a regrown layer that includes a channel and is epitaxially grown so as to cover the opening of the GaN-based layered body; a gate electrode located on the regrown layer in the opening; a source electrode located on the GaN-based layered body around the opening so as to be in contact with the regrown layer; and a drain electrode located so that the drain electrode and the source electrode sandwich the channel, the drain electrode being apart from the source electrode in a thickness direction of the GaN-based layered body, wherein the regrown layer includes an electron transit layer and an electron supply layer, and the channel is a two-dimensional electron gas formed in the electron transit layer at an interface between the electron transit layer and the electron supply layer; the regrown layer separating the source electrode from the GaN-based layered body, and the GaN-based layered body includes a p-type GaN-based semiconductor layer whose end surface is covered by the regrown layer on a wall surface of the opening, and a p-side electrode that is in ohmic contact with the p-type GaN-based semiconductor layer is disposed.