Patent ID: 8298868
Filing Date: 2012-10-30
Classification: H01L,H05K

Abstract:
1. A method of making a semiconductor chip assembly, comprising: providing a post and a base, wherein the post is adjacent to and integral with the base and extends above the base in an upward direction, and the base extends below the post in a downward direction opposite the upward direction and extends laterally from the post in lateral directions orthogonal to the upward and downward directions; providing an adhesive, wherein an opening extends through the adhesive; providing a conductive layer, wherein an aperture extends through the conductive layer; mounting the adhesive on the base, including inserting the post into the opening, wherein the adhesive extends above the base and the post extends into the opening; mounting the conductive layer on the adhesive, including aligning the post with the aperture, wherein the conductive layer extends above the adhesive and the adhesive is sandwiched between the base and the conductive layer and is non-solidified; then applying heat to melt the adhesive; moving the base and the conductive layer towards one another, thereby moving the post upward in the aperture and applying pressure to the molten adhesive between the base and the conductive layer, wherein the pressure forces the molten adhesive to flow into and upward in a gap located in the aperture between the post and the conductive layer; applying heat to solidify the molten adhesive, thereby mechanically attaching the post and the base to the conductive layer; then providing a plated through-hole; providing a conductive trace that includes a pad, a terminal, the plated through-hole and selected portions of the conductive layer and the base, wherein the terminal is coplanar with the base and an electrically conductive path between the pad and the terminal includes the plated through-hole; providing a cap that is adjacent to and covers in the upward direction and extends laterally from a top of the post and that contacts and overlaps the adhesive and includes a selected portion of the conductive layer; then mounting a semiconductor device on a heat spreader that includes the post, the base and the cap; electrically connecting the semiconductor device to the pad, thereby electrically connecting the semiconductor device to the terminal; and thermally connecting the semiconductor device to the post, the base and the cap.