Patent ID: 11973000
Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A heat dissipation plate, comprising:
a structural body including a first metal portion formed from a first metal and a second metal portion formed from a second metal that differs from the first metal and is solid state bonded to the first metal portion, wherein
the first metal has a thermal conductance that is higher than that of the second metal,
the second metal has a mechanical strength that is higher than that of the first metal,
the structural body includes a first surface of the heat dissipation plate arranged for connection to a semiconductor element and a second surface of the heat dissipation plate located at a side opposite to the first surface,
the second surface includes an upper surface of the first metal portion and an upper surface of the second metal portion,
the heat dissipation plate further comprises:
a main body including the first surface; and
a side wall arranged on a periphery of the main body and formed integrally with the main body,
part of the side wall is formed by the second metal portion, and
the second metal portion is formed continuously along the periphery of the main body around an entirety of the main body.