Patent ID: 11894290
Assignee: STMICROELECTRONICS S.R.L.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A device, comprising:
a substrate including a surface;
a first package on the surface of the substrate, the first package including:
a first molding compound including a first external surface and a second external surface opposite to the first external surface;
a first die in the first molding compound; and
a plurality of first leads including first protrusions protruding outward and away from the first external surface of the first molding compound and along a first peripheral region of the first molding compound;

a first heat sink structure at the first external surface of the first molding compound, the first heat sink structure being between respective first protrusions of the plurality of first protrusions, and the first heat sink structure is between the surface of the substrate and the first external surface of the molding compound;
a second package on the first package, the second package including:
a second molding compound including a third external surface and a fourth external surface opposite to the third external surface;
a second die in the second molding compound; and
a plurality of second leads including second protrusions protruding outward and away from the third external surface of the second molding compound and along a second peripheral region of the second molding compound; and

a second heat sink structure at the third external surface of the second molding compound, the second heat sink structure being between respective second protrusions of the plurality of second protrusions, and the second heat sink structure is between the second external surface and the third external surface.