Patent ID: 7008842

Claim:
A method for fabricating a component in an integrated circuit, the method comprising: depositing a first layer made of an electrically non-conducting material on a lower layer insulator with a surface wherein a first primary electrical connection via and a second primary electrical connection via open out to the surface, each of the first primary electrical connection via and the second primary electrical connection via being spaced apart at a predetermined distance and electrically connected to each other below the surface; forming a main hole in the first layer above the first primary connection via, wherein the main hole consists of one contiguous side wall and a bottom; depositing a second layer made of an electrically conducting material, covering the sides and the bottom of the main hole; removing the second layer over a top surface of the first layer and leaving the electrically conducting material only in the main hole so as to constitute a first electrode in a form of a cup in the main hole; forming a dielectric layer over all an inner surface of the cup; depositing a third layer of an electrically conducting material, filling the cup; removing the third layer and the dielectric layer over the top surface of the first layer and, leaving the electrically conducting material and dielectric only in the cup so as to constitute a second electrode separated from the first electrode by the dielectric, the first electrode, the dielectric layer and the second electrode being formed exclusively in the main hole; depositing a fourth layer made of an electrically non-conducting material defining a top surface; forming using a photolithography and an etching step, a first secondary hole passing through the fourth layer and reaching a top surface of the second electrode, the first secondary hole being formed directly above the main hole in order to eliminate the use of off-set vias, and a second secondary hole passing through the fourth layer and the first layer, at a predetermined distance from the main hole, and reaching a top surface of a second primary connection via; and filling the first secondary hole and the second secondary hole with an electrically conducting material so as to form a connection via for the first electrode and a connection via for the second electrode; wherein the second electrode is electrically connected to the connection via in the first secondary hole which opens out in the top surface of the fourth layer; wherein the first electrode is electrically connected to the first primary connection via and a branch disposed in the lower layer insulator and the connection via in the second secondary hole which opens out in the top surface of the fourth layer.