Patent ID: 8298915

Claim:
Method for forming a semi-conducting structure, comprising: a) the formation of at least one part of a circuit or a component, in or on a superficial layer of a substrate, the substrate including a buried layer underneath the superficial layer, and an underlying layer serving as first support, wherein the superficial layer is formed to cover entirely a surface of the buried layer, b) a transfer of said substrate onto a handle substrate, and then an elimination of the first support, c) the formation of an electrically conducting or ground plane forming layer, on at least one part of a bottom surface of said buried layer, wherein the buried layer is formed to insulate the electrically conducting or ground plane forming layer from the superficial layer and the circuit or the component, d) the formation, on said electrically conducting or ground plane forming layer, of a bonding layer, wherein the bonding layer is formed to have a thickness greater than the buried layer, e) a transfer of the structure obtained onto a second support and an elimination of said handle substrate, and f) after step b), thinning the buried layer.