Patent ID: 7326316
Filing Date: 2008-02-05
Classification: C08K,C09J,H01R,H05K,Y10T

Abstract:
1. A process for preparing an electrical interconnect, the process comprising the steps of: (a) providing a first substrate having a surface and at least one first electrical contact projecting from the first substrate surface; (b) positioning a second substrate, having a surface and at least one second electrical contact projecting from the second substrate surface, opposite to the first substrate such that the first substrate surface is substantially parallel with the second substrate surface and the first electrical contact is aligned with the second electrical contact; (c) positioning a first adhesive between: (i) the first substrate surface and first electrical contact projecting therefrom and (ii) the second substrate surface and second electrical contact therefrom, the first adhesive comprising an electrically non-conductive resin and particles, the particles comprising a core and a breakable coating of at least one electrically non-conductive material, the core comprising: (1) at least one first subparticle comprising a reactive resin, having conductive material therein, encapsulated inside a rupturable membrane; and, (2) at least one second subparticle comprising a catalyst encapsulated inside a rupturable membrane, (d) moving the at least one of the first substrate or the second substrate closer to the other such that the first electrical contact is positioned close enough to the second electrical contact to break the breakable coating of the particles in the interposed first adhesive such that the first subparticle membrane and the second subparticle membrane are ruptured, whereby the reactive resin and the catalyst react to form a conductive second adhesive between the first electrical contact and the second electrical contact provided that the coating of the particles interposed between the first substrate surface and the second substrate surface, but not interposed between the first electrical contact and the second electrical contact, is not broken.