Patent ID: 8097955
Filing Date: 2012-01-17
Classification: H01L

Abstract:
1. An interconnect structure for a workpiece comprising a semiconductor die and having a first side and a second side, comprising: a via extendable through the workpiece from the first side of the workpiece to the second side of the workpiece, the via being partially filled with a conductive material from the first side to an area proximate the second side of the workpiece, the via comprising sidewalls, the conductive material in the via forming a recessed region at the area proximate the second side of the workpiece; and a contact coupled to the conductive material in the via proximate the first side of the workpiece, the contact adapted to fit within a recessed region comprising a landing zone of an identical interconnect structure of another workpiece having a first side and a second side, the recessed region of the other workpiece proximate the second side of the other workpiece, wherein a width of the contact is substantially the same as a width of the recessed region of the other workpiece at a surface of the second side thereof prior to interconnection of the other workpiece to the workpiece.