Patent ID: 8062928

Claim:
A method for producing a semiconductor device, comprising: providing a semiconductor wafer with contact areas on an active surface including flip-chip contacts; applying a UV B-stageable material as an electrically insulating layer on the active surface such that a portion of the flip-chip contacts remain exposed; applying a patterned mask on the active surface of the semiconductor wafer; exposing the mask by means of UV radiation, so that the flip-chip contacts are not exposed and at least the surface of the exposed regions is brought to a cured intermediate state; removing the unexposed regions of the layer while leaving free at least a tip of the flip-chip contacts; providing a rewiring substrate having a top side and an underside opposed to the top side, with internal contact areas on the top side and external contact areas on the underside; applying the semiconductor wafer on the top side of the rewiring substrate so that the flip-chip contacts touch the internal contacts; and performing a heat treatment to produce electrical connections between the flip-chip contacts and the internal contact areas and cure the UV B-stage material.