Patent ID: 11942446
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor package comprising:
at least one second semiconductor chip stacked on a first semiconductor chip; and
an underfill layer interposed between the first semiconductor chip and the at least one second semiconductor chip, the underfill layer is composed of an insulating resin and fillers;
wherein the first semiconductor chip comprises: a first substrate; a first through-electrode penetrating the first substrate; a first passivation layer disposed on the first substrate and including a first recess region exposing the first through-electrode, the first recess region extending from an uppermost surface of the first passivation layer to a lowermost surface of the first passivation laver; and a first pad covering a bottom surface and sidewalls of the first recess region, the first pad is in direct contact with the first through-electrode, wherein the at least one second semiconductor chip comprises: a second substrate; a second passivation layer adjacent to the first substrate; a conductive bump protruding outside the second passivation layer toward the first semiconductor chip; and an inter-metal compound pattern disposed in the first recess region and positioned between sidewalls of the first pad, the inter-metal compound has an uppermost surface in direct contact with a lowermost surface of the conductive bump and a lowermost surface in direct contact with the first pad,
wherein the underfill layer is in direct contact with both the conductive bump and the inter-metal compound pattern and extends within the first recess region, a lowermost surface of the underfill layer extending within the first recess region is positioned below the uppermost surface of the first passivation layer, and
wherein a maximum width of the lowermost surface of the conductive bump is less than a maximum width of the lowermost surface of the inter-metal compound pattern.