Patent ID: 8084865

Claim:
An anchoring structure for a metal structure of a semiconductor device, the anchoring structure comprising: an anchoring recess structure comprising at least one overhanging side wall, wherein the metal structure is least partly arranged within the anchoring recess structure; and a chip, wherein the metal structure is a gate runner structure that runs along in an outer area of the chip and contacts a gate feed layer extending along walls of the anchoring recess and separated from a substrate of the chip via an insulating layer, from inside the anchoring recess, and wherein the insulating layer also separates a gate electrode within a first trench at a rim of a cell field of a vertical field-effect transistor integrated into the chip, from the substrate, and wherein a further intermediate insulating layer covers the gate electrode and extends between the gate feed layer and the metal structure, with the further intermediate insulating layer being interrupted at contact holes to allow for the metal structure contacting the gate feed layer at a bottom of the anchoring trench, and wherein the further intermediate insulating layer defines the overhanging side wall at which the further intermediate insulating layer and the metal structure abut each other, and wherein the gate feed layer extends into the cell field to contact the gate electrode.