Patent ID: 6960483

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 comprising image detection circuits and 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 temporary supporting substrate; eliminating of the major part of the thickness of the silicon wafer, leaving a fine silicon layer on the substrate, this fine silicon layer comprising the image detection circuits, depositing, layers of color filters and then etching on the semiconductive layer thus thinned, prior to the transfer of the semiconductive wafer to the substrate, on the front face of the wafer, metallized apertures are formed extending to a greater depth than the elements of the image detection circuits formed on the surface of the wafer, eliminating the major part of the thickness of the semiconductive wafer includes the baring, from the rear, of the metallization of the metallized apertures, dicing, the substrate into individual sensors after the deposition and the etching of the color filters.