Patent ID: 8216918

Claim:
A method of forming a packaged semiconductor device, comprising: providing a circuit board having a first major surface and a second major surface and an opening in the second major surface, first vias that extend between the first major surface and the second major surface, first contact pads terminating the vias at the first major surface, and second contact pads terminating the vias at the second major surface; attaching the circuit board to a carrier with a double-sided adhesive; placing a semiconductor device in the opening of the circuit board, wherein the semiconductor device has an active surface that is generally coplanar with the second major surface of the circuit board and wherein the active surface includes device contact pads; applying a photo-imageable dielectric layer over the active surface and sides of the semiconductor device and the second major surface of the circuit board; patterning the photo-imageable dielectric layer via selective exposure to expose the second contact pads of the circuit board and the semiconductor device contact pads; forming an interconnect layer over the photo-imageable dielectric layer, wherein the interconnect layer has second vias electrically connected to the second contact pads, third vias that are electrically connected to the contact pads on the active surface of the semiconductor device, an exposed surface, and third contact pads at the exposed surface; electrically connected to the second contact pads and the device contact pads forming a plurality of solder balls on the third contact pads connecting the packaged semiconductor device through all of the third contacts pads to a single substrate; removing the carrier from the circuit board; and attaching another packaged semiconductor device to the first contact pads at the first major surface.