Patent ID: 8558392

Claim:
A method of making a semiconductor device, comprising: providing a plurality of conductive pillars; disposing a first semiconductor die or component including an active surface between the conductive pillars; depositing an encapsulant over side surfaces and a back surface of the first semiconductor die or component opposite the active surface of the first semiconductor die or component; forming a recess including a step in a first surface of the encapsulant over the first semiconductor die or component; forming a first interconnect structure over the first surface of the encapsulant, the first interconnect structure following a contour of the recess in the encapsulant including the step; forming a second interconnect structure over a second surface of the encapsulant and first semiconductor die or component with contact pads formed on the active surface of the first semiconductor die or component in direct contact with the second interconnect structure; disposing a second semiconductor die or component in the recess with a plurality of first bumps formed on an active surface of the second semiconductor die or component directly bonded to a portion of the first interconnect structure formed in the recess; disposing a third semiconductor die or component in the recess with a plurality of second bumps formed on an active surface of the third semiconductor die or component directly bonded to a portion of the first interconnect structure formed over the step of the recess; and disposing a fourth semiconductor die or component over the recess and second semiconductor die or component with a plurality of third bumps formed on an active surface of the fourth semiconductor die or component directly bonded to a portion of the first interconnect structure outside the recess.