Patent ID: 8314459
Filing Date: 2012-11-20
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate having a first surface and a second surface opposing each other in a thickness direction of the semiconductor substrate, the semiconductor substrate including a first surface portion adjacent to the first surface and a second surface portion adjacent to the second surface; a plurality of isolation trenches dividing the semiconductor substrate into a plurality of element-forming regions; a vertical transistor disposed in one of the plurality of element-forming regions, the vertical transistor including a first electrode, a second electrode, and a third electrode, the first electrode and the second electrode disposed on the first surface and the third electrode disposed on the second surface so that electric current flows between the first electrode and the third electrode in the thickness direction, the vertical transistor further including a PN junction part in the first surface portion; a horizontal transistor disposed in another one of the plurality of element-forming regions, the horizontal transistor including a first electrode, a second electrode, and a third electrode, the first electrode, the second electrode, and the third electrode disposed on the first surface so that electric current flows between the first electrode and the third electrode in a direction along the first surface, the horizontal transistor further including a PN junction part in the first surface portion; a sheet of lead disposed to the first surface and covering the whole area of the first surface; a plurality of wire-bonding pads disposed on the second surface; a plurality of wires bonded to the plurality of wire-bonding pads disposed on the second surface; and a plurality of penetrating electrodes penetrating the semiconductor substrate in the thickness direction, wherein the first electrode of the vertical transistor is electrically coupled with the sheet of lead, and each of the second electrode of the vertical transistor, the first electrode, the second electrode, and the third electrode of the horizontal transistor is electrically coupled with a corresponding one of the plurality of wire-bonding pads through a corresponding one of the plurality of penetrating electrodes.