Patent ID: 8557631

Claim:
A method of self aligning a top die onto a carrier wafer, comprising: providing a carrier wafer having a top surface and a bottom surface; applying a hydrophobic self assembled monolayer (SAM) to the top surface of the carrier wafer in a predefined pattern that defines one or more top die placement regions; providing a liquid to the to surface of the carrier wafer within the one or more top die placement regions; placing one or more to dies into contact with the liquid, wherein the surface tension of the liquid aligns the one or more to dies by generating a force that causes the one or more top dies to overlap with the one or more top die placement regions; and affixing the one or more top dies to the top surface of the carrier wafer by removing the liquid from the one or more top die placement regions by siphoning the liquid through one or more vias located within the one or more top die placement regions and extending from the top surface of the carrier wafer to the bottom surface of the carrier wafer.