Integrated semiconductor product comprising a metal-insulator-metal capacitor
AssigneeInfineon Technologies AG
InventorsHeinrich Körner, Michael Schrenk, Markus Schwerd
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AssigneeInfineon Technologies AG
InventorsHeinrich Körner, Michael Schrenk, Markus Schwerd
Estimating the term…
To fabricate an integrated semiconductor product with integrated metal-insulator-metal capacitor, first of all a dielectric protective layer (5) and a dielectric auxiliary layer (16) are deposited on a first electrode (2). The protective layer and the auxiliary layer (16) are then opened up (17) via the first electrode. Then, a dielectric layer (6) is produced, and the metal track stack (7, 8, 9) for the second electrode is then applied to the dielectric layer (6). This is followed by the patterning of the metal-insulator-metal capacitor using known etching processes. This makes it possible to produce dielectric capacitor layers of any desired thickness using materials which can be selected as desired. In particular, this has the advantage that via etches can be carried out significantly more easily than in the prior art, since it is not necessary to etch through the residual dielectric capacitor layer above the metal tracks.
An integrated semiconductor product comprising interconnects, which include copper as an essential constituent, and at least one metal-insulator-metal capacitor, which comprises a first electrode, a dielectric layer serving as a capacitor dielectric and a second electrode, wherein the first electrode is formed in a layer which is also provided as a layer for interconnects and the dielectric layer is arranged in an opening, arranged above the first electrode, in a dielectric auxiliary layer, and wherein the total height of the second electrode and the dielectric layer is smaller than a thickness of an intermetal dielectric disposed on the layer which is also provided for as a layer for interconnects.
Dependencies are inferred from the claim text.