Patent ID: 7839622

Claim:
A capacitor device, comprising: a substrate, the substrate having a first substrate side and an opposite second substrate side, a capacitor region embedded in the substrate and comprising at least one layer structure having a first and a second capacitor electrode electrically isolated from each other and having a U-shaped cross-sectional profile in a plane perpendicular to the first and second substrate sides, said first and second capacitor electrode being electrically connected to a first and a second ( 528 ) contact structure respectively, and a current-path region extending from the first capacitor electrodes to the first contact structure and configured to provide a path for an electrical current, wherein the substrate comprises a recess on the first substrate side in a lateral substrate portion containing the capacitor region, the recess having a bottom face with a contact element that is part of the first contact structure, so that the capacitor region and the current-path region are arranged between the contact element and the second contact structure on the second substrate side.