US Patent 11776903 Semiconductor apparatus and method of making the same

A semiconductor apparatus includes an interconnect substrate having a first major surface, a first semiconductor device having a second major surface and mounted to the interconnect substrate, the second major surface opposing the first major surface, a second semiconductor device having a third major surface and a fourth major surface and mounted to the first semiconductor device, the third major surface opposing the first major surface, the fourth major surface opposing the second major surface, a through hole formed through the interconnect substrate at a position overlapping the second semiconductor device in a plan view taken in a thickness direction of the interconnect substrate, and a heatsink member disposed in contact with part of the third major surface, at least a part of the first major surface, and at least a part of a sidewall surface of the through hole.