Patent ID: 7138677

Claim:
An arrangement of at least two capacitors, the capacitor arrangement comprising: at least two capacitors arranged one in the other such that an outer capacitor at least partially encloses at least one inner capacitor, the outer capacitor and the inner capacitor being arranged concentrically one in the other and comprising, from the outside inward, a first dielectric layer having a thickness d 1 , a first electrode layer having a thickness d 2 , a second dielectric layer having a thickness d 4 , a second electrode layer having a thickness d 5 +d 7 , a third dielectric layer having a thickness d 8 and an inner third electrode layer; wherein the second electrode layer is at reference potential; wherein the at least two capacitors are disposed in or on a semiconductor substrate; wherein the outer capacitor and the inner capacitor have the same capacitance; wherein the capacitor arrangement is formed as an arrangement of trench capacitors; and wherein the first electrode layer extends above a structure depth T 1 along the wall of the trench and the second electrode layer is routed below the structure depth T 1 onto the semiconductor substrate.