Patent ID: 7312529

Claim:
An electrical structure, comprising: a first substrate comprising a first electrically conductive pad, a second electrically conductive pad, and a fifth electrically conductive pad; a second substrate comprising a third electrically conductive pad, a fourth electrically conductive pad, a sixth electrically conductive pad, a first electrically conductive member, and a second electrically conductive member, wherein said first electrically conductive member and said second electrically conductive member are not formed within a substrate, wherein said first electrically conductive member is electrically and mechanically connected to said fourth electrically conductive pad, wherein said second electrically conductive member is electrically and mechanically connected to said sixth electrically conductive pad, wherein said fourth electrically conductive pad comprises a first height, wherein said first electrically conductive member comprises a second height, wherein said first height comprises a different height than the second height, wherein said sixth electrically conductive pad comprises a third height, wherein said second electrically conductive member comprises a fourth height, wherein said third height comprises a different height than the fourth height, and wherein said fourth height of said second electrically conductive member comprises a different height than the second height of the first electrically conductive member; a first solder ball electrically and mechanically connecting said first electrically conductive pad to said third electrically conductive pad, wherein said first solder ball is in direct mechanical contact with said first electrically conductive pad and said third electrically conductive pad, and wherein said first solder ball comprises a first diameter; a second solder ball electrically and mechanically connecting said second electrically conductive pad to said first electrically conductive member, wherein said second solder ball comprises a second diameter, and wherein said first diameter is greater than said second diameter; and a third solder ball electrically and mechanically connecting said fifth electrically conductive pad to said second electrically conductive member, wherein said third solder ball comprises a third diameter, wherein said first diameter is greater than said third diameter, and wherein said third diameter is greater than said second diameter.