Patent ID: 8859414

Claim:
A method for joining (i) at least one integrated circuit (IC) die comprising a substrate including a semiconductor top surface having active circuitry thereon and a bottom surface and at least one protruding bonding feature having sidewall surfaces and a leading edge surface extending from said semiconductor top surface or from said bottom surface to (ii) a workpiece comprising a workpiece surface including at least one framed hollow receptacle and at least one electrical connector, said receptacle coupled to said electrical connector, said receptacle comprising a metal including sidewall portions and a top portion that defines a cavity, wherein said top portion comprises peripheral shelf regions and a gap region between said shelf regions that provides an opening to said cavity, comprising: pressing said IC die toward said workpiece so that said protruding bonding feature is inserted into said cavity of said receptacle through said opening, said pressing bending said peripheral shelf regions downward into said cavity and towards said sidewall portions of said receptacle to form bent peripheral shelf regions, wherein said protruding bonding feature contacts said bent peripheral shelf regions along a contact area, said contact area being at least primarily along said sidewall surfaces of said protruding bonding feature.