Patent ID: 7705469
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. A semiconductor device comprising: a lead frame including a die pad having a first main surface to which a substrate mounting area is set and a second main surface to which a die pad-side semiconductor chip mounting area is set, said die pad having one or two or more openings provided to penetrate between the first main surface and the second main surface within the substrate mounting area and outside the die pad-side semiconductor chip mounting area; a substrate having a first main surface to which a substrate-side semiconductor chip mounting area is set and which is provided with a plurality of semiconductor chip connecting first electrode pads outside the substrate-side semiconductor chip mounting area, and a second main surface mounted opposite to the substrate mounting area of the lead frame and provided with a plurality of semiconductor chip connecting second electrode pads exposed from the openings of the die pad; a first semiconductor chip which has a surface and a back surface opposite to the surface and is mounted in the die pad-side semiconductor chip mounting area with the back surface being opposed thereto; and a second semiconductor chip which has a surface and a back surface opposite to the surface and is mounted in the substrate-side semiconductor chip mounting area with the back surface being opposed thereto.