Patent ID: 11881524
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor device comprising:
a first semiconductor chip having a first electrode and a second electrode on a first surface and having a third electrode on a second surface that is opposite to the first surface;
a second semiconductor chip having a fourth electrode and a fifth electrode on a third surface and having a sixth electrode on a fourth surface that is opposite to the third surface;
a first electrode plate bonded to the second electrode of the first semiconductor chip by a first bonding material;
a second electrode plate bonded to the sixth electrode of the second semiconductor chip by a second bonding material;
a third electrode plate placed between the first semiconductor chip and the second semiconductor chip and having a first area sandwiched between the first semiconductor chip and the second semiconductor chip and a second area not sandwiched between the first semiconductor chip and the second semiconductor chip;
a first insulating film provided on part of one surface of the first electrode plate;
a first conductive layer provided on the first insulating film;
a second insulating film provided on part of one surface of the third electrode plate; and
a second conductive layer provided on the second insulating film,
wherein one surface of the first area of the third electrode plate is bonded to the fifth electrode of the second semiconductor chip by a third bonding material, and another surface of the first area of the third electrode plate is bonded to the third electrode of the first semiconductor chip by a fourth bonding material,
wherein the first electrode of the first semiconductor chip and the first conductive layer are bonded by a fifth bonding material,
wherein the fourth electrode of the second semiconductor chip and the second conductive layer are bonded by a sixth bonding material,
wherein the first to the sixth bonding materials include copper or silver,
wherein a heat sink is connected to another surface of the first electrode plate,
wherein in the third electrode plate, the first area is thinner than the second area, and
wherein a thickness of the third electrode plate gradually increases from the first area toward the second area.