Patent ID: 7470985

Claim:
A non-aluminum solder connector structure comprising: an insulating layer with a first side and a second side; a via extending through said insulating layer from said first side to said second side; a conductor filling said via, wherein a top of said via on said second side comprises an uneven surface; a stack of dielectric layers adjacent to said second side, said stack of dielectric layers having a top surface; a well extending through said stack of dielectric layers to said via, wherein said well has a bottom and sidewalls and wherein said bottom of said well comprises said top of said via; a conductive liner within said well only on said bottom and on said sidewalls, wherein said conductive liner conforms to said uneven surface of said top of said via and wherein a first thickness of said conductive liner is less than approximately one tenth a second thickness of said stack; and a polymide layer immediately adjacent to said top surface of said stack of dielectric layers, wherein no portion of said conductive liner is positioned between said top surface of said stack of dielectric layers and said polymide layer.