Patent ID: 11972997
Assignee: ROHM CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A semiconductor device comprising:
a conductive substrate having an obverse surface facing one side in a thickness direction and a reverse surface facing an opposite side from the obverse surface;
at least one semiconductor element electrically bonded to the obverse surface, wherein the conductive substrate includes:
a first base layer and a second base layer each of which is made of graphite composed of stacked graphenes; and
a metal layer disposed between the first base layer and the second base layer,
the graphenes of the first base layer are stacked in a first stacking direction perpendicular to the thickness direction,
the graphenes of the second base layer are stacked in a second stacking direction perpendicular to the thickness direction and intersecting the first stacking direction,

a support substrate having a supporting surface facing the reverse surface of the conductive substrate,
the conductive substrate being bonded to the support substrate with the reverse surface facing the supporting surface,
the support substrate having a bottom surface facing opposite from the supporting surface; and

a sealing resin covering the conductive substrate, the semiconductor element and a part of the support substrate, wherein
the bottom surface is exposed from the sealing resin.