Patent ID: 9508687
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A method of making a microelectronic assembly comprising: electrically joining some contacts of a substrate to respective first lead fingers of a lead frame, the substrate contacts facing the first lead fingers to which they are joined, the substrate having a plurality of the contacts at a first surface and a plurality of terminals at a second surface opposed to the first surface; aligning and joining element contacts at a front face of a first microelectronic element with corresponding substrate contacts underlying the element contacts; electrically interconnecting contacts at a face of a second microelectronic element facing away from the substrate with second lead fingers of the lead frame; forming a common interface for electrical interconnection to a component external to the microelectronic assembly along the second surface of the substrate and the bottom surface of the first lead fingers; aligning a bottom surface of the first lead fingers with the second surface of the substrate so that the bottom surface of the first lead fingers and the bottom surface of the substrate are coplanar and extend along a common plane parallel to a plane along which the front face of the first microelectronic element extends, the common interface being formed along the plane; and forming an encapsulant over the first and second microelectronic elements, exposed surfaces of the substrate and over the electrical connections between the second microelectronic element and the second lead fingers.