Patent ID: 6674647
Filing Date: 2004-01-06
Classification: B23K,H01L,H05K,Y02P

Abstract:
An electronic package, comprising:a first substrate; a plurality of pads formed on the first substrate, each pad having a raised flat surface; a plurality of first solders each formed on the raised surface of a corresponding one of the plurality of pads and having a top concave surface and a bottom flat surface covering the raised flat surface of the corresponding pad; a second substrate facing the first substrate; and a plurality of a second solders formed on the second substrate corresponding to the plurality of first solders, each second solder having a convex top surface matching the concave surface of the corresponding first solder, wherein the plurality of first solders are softer than the plurality of second solders to allow each of the plurality of first solders to match with the convex top surface of each of the corresponding plurality of second solders such that a personalized fit is provided between each of the plurality of first and second solders.