The present invention relates to a method of fabrication process which
integrates the processing steps for fabricating the trench MIM capacitor
with the conventional middle-of-line processing steps for fabricating
metal contacts, so that the inner metallic electrode layer of the trench
MIM capacitor and the metal contact of the FET or other logic circuitry
components are formed by a single middle-of-line processing step and
comprise essentially the same metallic material. The semiconductor device
contains at least one trench metal-oxide-metal (MIM) capacitor and at
least one other logic circuitry component, preferably at least one field
effect transistor (FET). The trench MIM capacitor is located in a trench
in a substrate and comprises inner and outer metallic electrode layers
with a dielectric layer therebetween. The FET comprises a source region,
a drain region, a channel region, and at least one metal contact
connected with the source or drain region.