Patent ID: 7138726

Claim:
A method of packaging semiconductor wafers, comprising: providing a first wafer and a second wafer, the first wafer having interconnection conductor material portions extending from a first surface thereof, wherein the interconnection conductor material portions have a maximum height; providing a interleaf member between the first and second wafers such that the first surface of the first wafer is facing the interleaf member, the interleaf member comprising: a top surface, a first recessed portion having an outer perimeter shape corresponding to an outer perimeter shape of the first wafer, and a first depth from the top surface, and a second recessed portion formed at least partially within the first recessed portion, having a bottom surface at a second depth from the top surface, wherein the second depth is greater than the first depth, and wherein the second depth minus the first depth is greater than the maximum height of the interconnection conductor material portions.