The present invention relates to a semiconductor device that 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. The present invention also relates to a
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.