Patent ID: 6258627
Filing Date: 2001-07-10
Classification: H01L,H05K,Y02P

Abstract:
A method of assembling an electronic module comprising the steps of:(a) providing a semiconductor chip;(b) providing a substrate for mounting said chip;(c) providing an interposer for connecting said chip to said substrate comprising:a laminate sheet having apertures; andsolder plugs disposed within said apertures of said laminate sheet, said solder plugs comprising a first solder and a second solder having a lower melting temperature than said first solder;(d) aligning said interposer between said chip and said substrate; and(e) heating said semiconductor chip, substrate, and interposer to a temperature sufficient to fuse said laminate sheet to surfaces of said semiconductor chip and said substrate thereby filling a gap between said semiconductor chip and said substrate while joining said solder plugs to corresponding bonding pads on said semiconductor chip and said substrate to form an electronic module.