Patent ID: 6103586
Filing Date: 2000-08-15
Classification: H01L

Abstract:
A method for making an integrated circuit capacitor comprising the steps of:forming a first dielectric layer adjacent a substrate;forming a first opening in the first dielectric layer;filling the first opening to define a first metal plug;forming a first trench in the first dielectric layer adjacent the first metal plug;forming an interconnection line lining the first trench and contacting the first metal plug to define anchoring recesses on opposite sides of the first metal plug;forming a second dielectric layer on the interconnection line;forming a second opening in the second dielectric layer and aligned with the first opening;filling the second opening to define a second metal plug having a body portion and anchor portions extending downward from the body portion for engaging the anchoring recesses to anchor the second metal plug;forming a second trench in the second dielectric layer adjacent the second metal plug;forming a third dielectric layer adjacent an upper portion of the second metal plug; andforming an electrode on the third dielectric layer.