Patent ID: 11887919
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A semiconductor package comprising:
an upper substrate on a lower substrate, the upper substrate having a first surface and a second surface which are opposite to each other;
a plurality of semiconductor chips mounted on the first surface of the upper substrate;
an interconnection layer between the first surface of the upper substrate and the plurality of semiconductor chips, the plurality of semiconductor chips being connected to a plurality of metal interconnection lines in the interconnection layer;
a mold layer between the second surface of the upper substrate and the lower substrate;
an insulating layer between the second surface of the upper substrate and the mold layer;
a buffer layer between the mold layer and the lower substrate, wherein the buffer layer includes a third surface that is in contact with the mold layer and a fourth surface opposite to the third surface of the buffer layer; a plurality of bumps disposed between the buffer layer and the lower substrate and connected to the lower substrate;
a plurality of through-electrodes penetrating the upper substrate, the insulating layer, and the mold layer; and
conductive pads in the buffer layer and adjacent the third surface of the buffer layer,
wherein each of the plurality of through-electrodes is connected to a corresponding one of the conductive pads,
wherein the interconnection layer contacts the plurality of through-electrodes,
wherein each of the plurality of bumps includes a head portion and a pillar portion,
wherein the pillar portion extends from the head portion into the buffer layer and is connected to a corresponding one of the conductive pads,
wherein the head portion is connected to the pillar portion and is disposed on the fourth surface of the buffer layer,
wherein the mold layer includes an insulating material of which a coefficient of thermal expansion is greater than that of the upper substrate, and
wherein a thickness in a first direction of the mold layer is less than a thickness in the first direction of the upper substrate, and the first direction is perpendicular to the first surface of the upper substrate.