US Patent 8685792 Integrated circuit package system with interposer

An integrated circuit package system includes: providing a mountable integrated circuit system having an encapsulation with a cavity therein and a first interposer exposed by the cavity; mounting a second interposer over the first interposer for only stacking a discrete device thereover, and with the second interposer over the encapsulation and the cavity; and mounting an electrical component over the second interposer.