Patent ID: 6972210

Claim:
A method for making an image sensor, comprising the steps of: forming, on the front face of a semiconductive wafer, of a series of active zones including image detection circuits, each corresponding to a respective image sensor, each active zone being surrounded by input/output pads, transferring of the wafer by its front face against the front face of a supporting substrate; eliminating a major part of the thickness of the semiconductive wafer, leaving a thin semiconductive layer, including the image detection circuits, on the substrate, depositing layers of color filters and then etching on the thin semiconductive layer, laying out the substrate including connection pads with the same geometry as the pads of each active zone so as to come into a position facing these pads during the transfer, to solder a respective pad of the substrate to a corresponding pad of the semiconductive wafer; wherein after eliminating the major part of the thickness of the semiconductor wafer, apertures are formed in the thin semiconductor layer, these apertures extending to the lower surface of the connection pads which have been formed beforehand on the wafer, prior to transfer to the substrate dicing the substrate into individual sensors after the deposition and the etching of the color filters.