Patent ID: 8161635

Claim:
A method comprising: providing a substrate having (i) a first side and (ii) a second side, the first side being opposite of the second side; constructing a via in the substrate, the via being formed within a via hole that extends from the first side of the substrate to the second side of the substrate, the formed via having (i) a first end located at the first side of the substrate and (ii) a second end opposite the first end and located at the second side of the substrate; selectively depositing a first conductive material on the second end of the via to form a conductive pad directly on the via on the second side of the substrate without depositing the first conductive material onto the first side of the substrate; and wherein selectively depositing a first conductive material on the second end of the via comprises placing a mask on the substrate that covers at least the first side of the substrate including the first end of the via, and after deposition of the first conductive material on the second end of the via, removing the mask.