Patent ID: 6259149
Filing Date: 2001-07-10
Classification: H01L

Abstract:
An isolated thin-film trench capacitor comprising:a substrate,a first trench in the substrate containing an electrically insulating material,a capacitor imbedded in the electrically insulating material in the first trench, the capacitor comprising:a plurality of second trenches in the electrically insulating material, the second trenches being spaced from each other,a continuous first conductive layer in the second trenches and on the electrically insulating material between the second trenches, the first conductive layer having a thickness as to only partially fill the second trenches,a dielectric layer oil the first conductive layer, the dielectric layer having a thickness as to only partially fill the second trenches, anda continuous second conductive layer in the second trenches and on the dielectric layer, the second conductive layer having a thickness as to substantially fill the second trenches.