Patent ID: 8481401

Claim:
A method for manufacturing a component having a through-contact, comprising: providing a substrate; forming an insulating layer on the substrate; structuring the insulating layer by removing the insulating layer at least in a predetermined trenching area surrounding a selected substrate area; performing an etching process as follows: trenching the structured insulating layer functioning as a mask in the etching process, and creating a trench structure in the substrate surrounding the selected substrate area having a widening shape at opposite surface edges of the substrate exceeding a trenched area of the structured insulating layer; and forming a metallic layer on the insulating layer, wherein the metallic layer seals the trench structure and wherein a parameter of the widening shape of trench structure is selected during the etching process such that an excess metallic compound falling through the undertrenched structured insulating layer and onto a wall of the trench structure during the forming of the metallic layer does not form an electrical connection between the metallic layer and the wall of the trench structure.