Patent ID: 8298947
Filing Date: 2012-10-30
Classification: H01L,H05K

Abstract:
1. A method for assembling a semiconductor device comprising the steps of: providing a semiconductor chip having a plurality of gold studs; providing a tape having a first substrate surface and a second substrate surface; the first substrate surface having a plurality of first copper contact pads in locations matching the gold studs on the chip; each of the plurality of first copper pads covered by a first continuous and conformal first nickel layer having a first thickness, and a first gold layer covering the first nickel layer; the second substrate surface having a plurality of second copper contact pads; each of the plurality of second copper pads covered by a second continuous and conformal second nickel layer having the first thickness, and a second gold layer covering the second nickel layer; attaching the chip to the first substrate surface by the steps of: