Patent ID: 8012797

Claim:
A manufacturing method, comprising: providing a substrate including an upper surface and contact pads disposed adjacent to the upper surface of the substrate; applying a first electrically conductive material to the upper surface of the substrate to form first conductive bumps disposed adjacent to respective ones of the contact pads; applying a molding material to the upper surface of the substrate to form a molded structure covering the first conductive bumps, the molded structure including an upper surface, upper ends of the first conductive bumps being recessed below the upper surface of the molded structure; forming openings adjacent to the upper surface of the molded structure, the openings exposing the upper ends of the first conductive bumps; and applying, through the openings, a second electrically conductive material to the upper ends of the first conductive bumps; wherein the openings define covered portions and uncovered portions of the first conductive bumps, at least one of the openings having a central depth and a peripheral depth, the central depth corresponding to a distance between the upper surface of the molded structure and an upper end of a respective one of the first conductive bumps, the peripheral depth corresponding to a distance between the upper surface of the molded structure and a boundary between a covered portion and an uncovered portion of the respective one of the first conductive bumps, the peripheral depth being greater than the central depth.