Patent ID: 9508628
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A semiconductor assembly, comprising: a semiconductor substrate including a substrate material having a first major surface, a second major surface, and an opening extending from the first major surface to the second major surface, the opening including a generally cylindrical portion extending generally normal to the first major surface and a terminal portion extending transverse to the cylindrical portion and intersecting the second major surface, the terminal portion having a width generally parallel to the plane of the first major surface that is greater than a corresponding width of the cylindrical portion; a homogeneous volume of conductive material disposed in both the cylindrical portion and the terminal portion of the opening, the conductive material forming a conductive path in the cylindrical portion and at least a portion of a conductive terminal in the terminal portion, a seed layer at an outer boundary of the conductive material at the terminal portion; and a barrier layer at an outer boundary of the seed layer at the terminal portion, wherein the seed layer and the barrier layer project outward beyond the outermost surface of the semiconductor substrate and extend to the second cross-sectional width of the exposed outwardly facing surface, and wherein the conductive terminal comprises the seed layer, the barrier layer, and the conductive material.