Patent ID: 10777674

Abstract:
To suppress breakage of a diode. A semiconductor device comprises a stacked body and a first electrode. The stacked body includes a first nitride semiconductor layer, a second nitride semiconductor layer, a third nitride semiconductor layer, and a fourth nitride semiconductor layer that are stacked in sequence. The first electrode is in contact with a surface of the first nitride semiconductor layer that is opposite to a surface in contact with the second nitride semiconductor layer. The semiconductor device includes a transistor forming region and a diode forming region adjacent to the transistor forming region. The transistor forming region includes a first groove, a second electrode, and a third electrode. The first groove has a bottom portion located in the second nitride semiconductor layer. The second electrode is formed on a surface of the first groove. The third electrode is in contact with a surface of the fourth nitride semiconductor layer that is opposite to a surface in contact with the third nitride semiconductor layer. The diode forming region includes a second groove and a Schottky electrode. The second groove has a bottom portion located in the third nitride semiconductor layer. The Schottky electrode makes a Schottky barrier junction with the third nitride semiconductor layer and is electrically connected to the third electrode.