Patent ID: 6731010
Filing Date: 2004-05-04
Classification: H01L

Abstract:
A semiconductor device, comprising:a lead frame having leads and a through hole there through from its top surface to bottom surface; a semiconductor chip with its active surface facing upward and being housed within said through hole of said lead frame; wherein the electrode terminals on said semiconductor chip active surface are connected with the top surface of said lead frame by bonding wires; and a sealing resin layer which seals the bonding wires and semiconductor chip integrally, and which fixes the semiconductor chip within said through hole sealing thereabout; wherein the bottom surface of said lead frame, the downward facing back surface of said semiconductor chip, and the bottom surface of said sealing resin layer are all ground and polished to the same flat surface; and a second semiconductor chip bonded at its back surface to said first semiconductor chip back surface thereby having its active surface facing in the opposite direction of said first semiconductor chip active surface.