Packaged electronic device having metal comprising self-healing die attach material

摘要

A method of assembling an electronic device and electronic packages therefrom. A die attach adhesive precursor is placed between a top surface of a workpiece and an IC die. The die attach adhesive precursor includes metal particles, a first plurality of first microcapsules having a polymerizable material inside, and a second plurality of second microcapsules having a polymerization agent inside to form a first polymer upon rupture of first and second microcapsules. A force sufficient to rupture at least a portion of the first plurality of first microcapsules and at least a portion of the second plurality of second microcapsules is applied to form a self-healing die attach adhesive wherein the first polymer binds the plurality of metal particles and the remaining microcapsules and secures the IC die to the top surface of the workpiece. The self-healing die attach adhesive generally includes at least 90 vol. % metal.