Patent ID: 8883562
Filing Date: 2014-11-11
Classification: H01L

Abstract:
1. A method of fabricating first and second stacked microelectronic units, comprising: a) stacking and joining a plurality of microelectronic elements to form a stacked assembly thereof, each of the microelectronic elements having a front face, a rear face remote from the front face, contacts exposed at the front face, edges extending between the front and rear faces and traces connected to the contacts extending along the front face towards the edges, the front faces of at least some of the microelectronic elements overlying and confronting the rear faces of other microelectronic elements, wherein at least first and second microelectronic elements of the stacked assembly are spaced apart from one another in a direction parallel to their front faces, a third microelectronic element overlies the rear face of the first microelectronic element, and a fourth microelectronic element overlies the rear face of the second microelectronic element; b) then forming at least one conductor extending from a trace of each of the first, second, third, and fourth microelectronic elements; and c) severing the stacked assembly into the first and second microelectronic units, the first and second microelectronic units including the first and second microelectronic elements, respectively, such that a first portion of the at least one conductor extends along the edges of each of the first and third microelectronic elements and a second portion of the at least one conductor extends along the edges of each of the second and fourth microelectronic elements.