Patent ID: 7781232
Filing Date: 2010-08-24
Classification: H01L,H05K,Y02P

Abstract:
1. A method for reworking an underfilled module comprising: providing a module having a component joined to a substrate by solder connections, said solder connections being encapsulated by an underfill matrix; removing said component to reveal said solder connections encapsulated within said underfill matrix; removing said solder connections from said underfill matrix to form openings therein having exposed metallurgy of said module at a bottom of said openings; transferring solder onto said exposed metallurgy to form transferred solder connections; flattening said transferred solder connections to provide flattened solder connections; joining solder connections of a new component to said flattened solder connections; and applying an underfill material to join said new component to said substrate.