Method for producing a metal insert in a timepiece

摘要

The method involves preliminary structuring of a silicon substrate such that the substrate preliminary possesses a form of a timepiece, where the substrate comprises monolithic silicon block. A blind cavity is formed in the structured silicon substrate, and is filled with a metal/metal alloy (7). A conductive bottom of the cavity is formed, where the bottom is formed by the silicon substrate and by a porous silicon layer. Walls of the cavity are covered by an insulating material layer.