Patent ID: 8258544
Filing Date: 2012-09-04
Classification: H01L

Abstract:
1. A field-effect transistor comprising: a substrate; a channel layer that is laminated on the substrate, and through which carriers are transported; a carrier supply layer that is laminated on the channel layer, and supplies carriers to the channel layer; a source electrode that is joined to the carrier supply layer; a drain electrode that is disposed opposing the source electrode, and is joined to the carrier supply layer; a gate electrode that is disposed between the source electrode and the drain electrode, and controls transport of carriers; a first insulating layer that is laminated on the carrier supply layer between the source electrode and the drain electrode, and suppresses current collapse; an opening that is formed between an edge of the first insulating layer opposing the drain electrode and the drain electrode; and a second insulating layer that is laminated on the carrier supply layer exposed in the opening, wherein the carries supply layer is provided with an opening ion implantation region corresponding to the opening.