Patent ID: 6081417
Filing Date: 2000-06-27
Classification: H01L

Abstract:
A capacitor comprising an upper electrode, a lower electrode and a capacitive part made of a ferroelectric, interposed between the upper and lower electrodes, at least one of the electrodes having a single-layer or multi-layer structure made of a metal sparingly reactive with oxygen, or a metal having conductivity even when oxidized to become an oxide, or a conductive metal oxide, wherein the capacitive part is formed on an area of the lower electrode which is inside the outer periphery of the lower electrode, the side of the capacitive part is covered by an insulating layer having a dielectric constant smaller than that of the ferroelectric constituting the capacitive part, and the upper surface of the capacitive part contacts with an area of the upper electrode which is inside the outer periphery of the upper electrode, wherein the upper surface of the capacitive part and the upper surface of the upper electrode are flush with each other.