Patent ID: 7302857

Claim:
A method of manufacturing a capacitive sensor, comprising: forming an insulating layer on top of a conductive substrate; and forming a first conducting electrode on top of the insulating layer, wherein the insulating layer is formed to include support areas formed at edges of the first conducting electrode and a partial area formed under the first conducting electrode, wherein said support areas of the insulating layer are formed to support a second conducting electrode located a predetermined distance from the first conducting electrode and a forming capacitance element, wherein a thickness (d 2 ) of the partial area of the insulating layer is less than a thickness (d 1 ) of the support areas of the insulating layer, and wherein a top surface of the conductive substrate includes feed-through protrusion formed at areas corresponding to the thickness (d 1 ) of the support areas of the insulating layer such that a top surface of the insulating layer is planar.