Patent ID: 8105917

Claim:
A method for producing a connection pad on an electronic component, comprising the following steps: producing an integrated circuitry on a first substrate, said circuitry comprising at least one internal conductive connection and a portion of a polycrystalline silicon layer dedicated for the connection of the pad, said portion of polycrystalline silicon layer being in contact with said internal conductive connection of the integrated circuitry; transferring a front side of said first substrate onto a transfer substrate and then thinning said first substrate from a back side thereof; opening an aperture in the thinned back side and baring said portion of polycrystalline silicon in said aperture; and depositing a metal layer on said thinned back side and in the aperture, and etching said metal layer so as to define said pad which is in electrical contact with the internal connection of the integrated circuitry by way of said polycrystalline silicon layer.