The present disclosure is related to a semiconductor package. The semiconductor package includes a substrate and a semiconductor chip. The substrate includes a window through a center portion of the substrate, in which the substrate has an inner sidewall surrounding the window and a conductive foil located on a top surface of the substrate, in which the conductive foil extends beyond the inner sidewall of the substrate. The semiconductor chip is located on the top surface of the substrate, in which the conductive foil is located between the substrate and the semiconductor chip, and the semiconductor chip has a bonding pad electrically connected to the conductive foil.