Patent ID: 8048781

Claim:
A method for packaging integrated circuit devices, comprising: providing a singulated device wafer, the singulated device wafer being a wafer that has been singulated to form a multiplicity of integrated circuit dice arranged in a first configuration, each die having an active surface and a back surface, the active surface of each die having a plurality of I/O pads formed thereon; providing a substrate including a sacrificial semiconductor wafer, the substrate having a first surface, wherein a multiplicity of device areas are formed on the first surface of the substrate and are arranged into a second configuration and wherein each device area includes an array of metalized contacts; aligning the dice as a whole with the second configuration of device areas such that the dice are positioned substantially simultaneously over the device areas on the substrate; attaching the dice from the singulated device wafer as a whole substantially simultaneously to the substrate such that each die is attached to an associated one of the device areas; after attaching the dice to the substrate, encapsulating at least a portion of each of the dice and at least a portion of each of the metalized contacts with a molding material such that the molding material fills in gaps between the dice; and after the encapsulating of the dice and the contacts, sacrificing semiconductor material of the sacrificial substrate such that portions of the contacts are exposed to serve as electrical contacts for the dice, wherein the molding material helps hold the dice and the multiplicity of device areas together during the sacrificing operation.