Abstract:
A method of forming a semiconductor package may include providing a first package including a first semiconductor chip mounted on a first package substrate having a via-hole and molded by a first mold layer, providing a second package including a second semiconductor chip mounted on a second package substrate having a connection pad and molded by a second mold layer, stacking the first package on the second package to vertically align the via-hole with the connection pad, forming a through-hole penetrating the first and second packages and exposing the connection pad, and forming an electrical connection part in the through-hole. The electrical connection part may electrically connect the first package and the second package to each other.