Patent ID: 9209190
Filing Date: 2015-12-08
Classification: H01L

Abstract:
1. A capacitor structure, comprising: a plurality of first conducting layers of uniform thickness disposed over a bottom region and along sidewalls of a recess arranged within a doped region of a substrate and over a surface of the substrate, wherein the plurality of first conducting layers are separated from one another and the substrate by a plurality of first dielectric layers, the plurality of first conducting layers comprising: a second conducting layer disposed over the plurality of first conducting layers, wherein the second conducting layer fills a remainder of the recess not filled by the plurality of first conducting layers, wherein the second conducting layer is separated from the first conducting layer by a second dielectric layer, wherein the second conducting layer has a second planar upper surface that is coplanar with the first planar upper surface; a plurality of first contacts connected to respective upper surfaces of the plurality of first conducting layers, respectively; a second contact connected to the second conducting layer over the recess; and a third contact connected to the doped region of the substrate.