Patent ID: 6933585

Claim:
A method for making an image sensor, comprising the steps of: forming, on the front face of a semiconductive wafer, a series of active zones comprising image detection circuits each corresponding to a respective image sensor, each active zone being surrounded by input/output pads, then, transferring of the wafer by its front face against the front face of a temporary supporting substrate; then, eliminating a major part of the thickness of the semiconductive wafer, leaving a very fine semiconductive layer on the substrate, this fine semiconductive layer comprising the image detection circuits; then, layers of color filters are deposited and then etched on the semiconductive layer thus thinned, then, after the etching of the color filters, the temporary substrate is are transferred to a transparent, permanent substrate applied on the side of the temporary substrate that bears the color filters, then, at least the major part of the temporary substrate is removed, to enable easy access to the input/output pads, and finally, the substrate is diced into individual sensors.