Patent ID: 6664621
Filing Date: 2003-12-16
Classification: H01L

Abstract:
A microelectronic assembly comprising:(a) an active microelectronic element having an active element body with surfaces including a front surface, one or more active electronic devices in said body and active element contacts exposed to said front surface; and (b) an interconnect element having an interconnect element body formed separately from said active element body, said interconnect element body having a coefficient of thermal expansion substantially matched to the coefficient of thermal expansion of said active element body, said interconnect element having surfaces including a first surface confronting said front surface of said active element body, said interconnect element having interconnect conductors carried by said interconnect element body, at least some of said interconnect conductors being connected to at least some of said active element contacts; and (c) terminals for connection to an external substrate, at least some of said terminals overlying one or more of said surfaces of said interconnect element body, said active element body, or both, said terminals being connected to at least some of said interconnect conductors and movable with respect to said interconnect element body and said active element body.