Patent ID: 7901989

Claim:
A method of fabricating a stacked microelectronic assembly comprising: a) forming a structure comprising a plurality of first microelectronic elements each having a front face bonded to a carrier and a first edge surface extending away from the front face, and a plurality of first traces extending along said front face towards said first edge surface; b) removing material from said first edge surfaces to expose at least a portion of each of said first traces; c) aligning and joining a plurality of second microelectronic elements with said structure such that a front face of each said second microelectronic element is facing a rear face of a first microelectronic element, each second microelectronic element having a second edge surface and a plurality of second traces extending along said front face of said second microelectronic element towards said second edge surface; d) removing material from said second edge surfaces to expose at least a portion of each of said second traces; and e) connecting leads to said first and second traces.