Patent ID: 7030457

Claim:
A capacitor, comprising: a high-ohmic semiconductor substrate; a first trench in the semiconductor substrate; a doping area disposed adjacent to the first trench, the doping area containing doping material introduced via the first trench; a dummy trench in the semiconductor substrate, the dummy trench having no function for supplying capacitance for the capacitor; a further doping area disposed adjacent to the dummy trench, the further doping area containing doping material introduced via the dummy trench; a dielectric layer disposed over a surface of the first trench and a surface of the dummy trench; an electrically conductive material in the first trench; a first contact structure for contacting the electrically conductive material in the first trench in an electrically conductive manner; and a second contact structure for contacting the further doping area proximate to the dummy trench in an electrically conductive manner.