Patent ID: 8853558

Claim:
A microelectronic assembly comprising: a first surface; a first thin conductive element exposed at the first surface and having a first face comprising first and second regions; a first conductive projection having a base connected to and covering the first region of the first face and extending to a first end remote therefrom, the first conductive projection further comprising a second end and an edge extending between the first and second ends; a first dielectric material layer covering the second region of the first thin conductive element and contacting at least the base of the first conductive projection; a first substrate having a second surface and a second conductive projection extending away from the second surface; a second thin conductive element exposed on the second surface of the substrate, the second thin conductive element having a second face comprising first and second regions, and wherein the second conductive projection has a base and an end remote from the base, the base defining a periphery and connected to and covering the first region of the second thin conductive element; a second dielectric material layer covering the second region of the second thin conductive element and contacting at least the base of the second conductive projection; and a first fusible metal mass extending between the first and second dielectric material layers and connecting the first conductive projection to the second conductive projection such that the first face is oriented toward the second surface, wherein the first fusible metal mass extends along a substantial portion of the edge of the first conductive projection towards the first dielectric material layer.