Integrated circuit package with solderless interconnection structure

Abstract

An integrated circuit package may include an integrated circuit die and a package substrate having a conductive pad. A conductive pillar is formed on a front surface of the integrated circuit die and directly contacts the conductive pad. Prior to contacting the conductive pad directly, the conductive pillar may be positioned adjacent to the conductive pad such that it is aligned to the conductive pad. The integrated circuit package further includes an interconnect structure that is formed in the package substrate. The interconnect structure may include conductive traces that are electrically connected to the conductive pad and the conductive pillar. An additional integrated circuit die may be mounted on the package substrate. The additional integrated circuit die may couple to the integrated circuit die through the interconnect structure.