Patent ID: 6121676
Filing Date: 2000-09-19
Classification: H01L,H05K

Abstract:
A method of making a stacked microelectronic assembly comprising:a) providing a flexible substrate having a plurality of attachment sites, said flexible substrate including conductive terminals accessible at a surface thereof and wiring connected to said terminals and including flexible leads extending to said attachment sites;b) providing compliant elements atop said attachment sites;c) assembling a plurality of microelectronic elements to said attachment sites, wherein said compliant elements are disposed between said microelectronic elements and said attachment sites;d) electrically connecting said microelectronic elements and said flexible leads, wherein said electrically connected microelectronic elements are movable relative to said flexible substrate;e) folding said flexible substrate and stacking at least some of said microelectronic elements in substantially vertical alignment with one another;f) maintaining said stacked microelectronic elements in said substantially vertical alignment, wherein said conductive terminals are exposed at a bottom end of said stacked assembly.