Patent ID: 11916029
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a semiconductor substrate having a first main surface;
a first aluminum electrode having a first surface facing the first main surface and a second surface opposite to the first surface, the first aluminum electrode being disposed on the semiconductor substrate;
a passivation film that covers a peripheral edge of the second surface and that is provided with an opening from which a portion of the second surface is exposed; and
a copper film, wherein
the second surface exposed from the opening is provided with a recess that is depressed toward the first surface, and
the copper film is disposed in the recess,
the semiconductor device further comprising:
a second aluminum electrode disposed on the semiconductor substrate;
a plurality of first bonding wires connected to the copper film; and
a second bonding wire connected to the second aluminum electrode, wherein
each of the first bonding wires is composed of copper or a copper alloy, and
the second bonding wire is composed of aluminum or an aluminum alloy.