Patent ID: 7528054
Filing Date: 2009-05-05
Classification: H01L

Abstract:
1. A method for producing and further processing of thin semiconductor chips, the method comprising: providing a semiconductor wafer including semiconductor chip positions arranged in rows and columns and an active upper side including contact areas associated with the semiconductor chip portions, wherein the semiconductor chip positions include semiconductor chips with semiconductor components; thinning the semiconductor wafer to reduce a thickness dimension of the semiconductor wafer to a predetermined thickness d; applying a double-sided adhesive film to an upper side of a dimensionally-stable, self-supporting plate; applying the plate and a thermoplastic adhesive layer of the double-sided adhesive film onto the active upper side of the semiconductor wafer so as to form a sandwich wafer, wherein a rear side of the plate and a rear side of the semiconductor wafer form opposing sides of the sandwich wafer; separating the sandwich wafer into individual sandwich chips along the rows and columns of the thinned semiconductor wafer, wherein each of the sandwich chips includes a self-supporting stack comprising a plate segment having a thickness D, a double-sided adhesive film and a thin semiconductor chip including a rear side that forms part of the rear side of the semiconductor wafer prior to separation of the sandwich wafer into individual sandwich chips; fixing a sandwich chip by the rear side of the thin semiconductor chip onto a chip mounting area of a stiff wiring substrate; and heating the fixed sandwich chip and lifting off the plate with double-sided adhesive film from the thin semiconductor chip in the region of the thermoplastic adhesive layer.