Patent ID: 8530936

Claim:
A semiconductor device comprising: a semiconductor layer formed on a substrate, the semiconductor layer having an active region on a plane; a source electrode and a drain electrode formed on the active region of the semiconductor layer; a gate electrode formed on the active region of the semiconductor layer, the gate electrode being located between the source electrode and the drain electrode; a first insulating film formed on the semiconductor layer and covering the gate electrode, the first insulating film having a step portion following a shape of the gate electrode; a first field plate formed on the first insulating film and located between the gate electrode and the drain electrode and separated from the step portion, the first field plate being electrically connected to the source electrode via outside of the active region; a second insulating film formed on the first insulating film to cover the step portion and the first field plate; and a shield electrode formed on the second insulating film, the shield electrode extending from a portion located above the first field plate and a portion located above the gate electrode, the shield electrode being electrically connected to the source electrode, wherein the first field plate and the shield electrode are electrically connected by a through interconnect, the through interconnect is formed through the second insulating film and provided outside of the active region.