Patent ID: 7877874
Filing Date: 2011-02-01
Classification: H01L,Y10T

Abstract:
1. A method of fabricating n electronic modules, n being an integer greater than 1, a module comprising a stack of K electronic wafers, a wafer i, i varying from 1 to K comprising on an insulating substrate at least one electronic component, the K wafers being electrically interlinked by conductors located on the lateral sides of the stack, wherein the fabrication is collective, comprising the steps of: a first step comprising, for each wafer i, in: A1) a step for fabricating a batch of n wafers i on one and the same flat thin sheet of thickness e B1) a thinning step by surface grinding of the other face of the sheet so as to reveal the resin of the grooves, a second step comprising: A2) stacking and assembling the K batches obtained on completion of the first step, so as to superimpose the opening areas, substantially one on top of the other, B2) drilling holes in the resin perpendicularly to the faces of the sheets through the entire thickness of the stack plumb with the opening areas, the transverse dimension of the holes being less than L C2) metallizing the wall of the holes, D2) cutting the stack along the grooves in order to obtain the n electronic modules.