Patent ID: 6121649
Filing Date: 2000-09-19
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate;at least one transistor formed on the semiconductor substrate, the transistor having a source, a drain and a gate;an insulating film having at least a first contact hole, the insulating film being formed on the semiconductor substrate to cover the gate;at least one capacitor formed on the insulating film, the capacitor having a lower electrode, a ferroelectric film and an upper electrode stacked in order;a side-wall insulating film to cover side faces of the lower electrode and the ferroelectric film;a contact having a first and a second end portion and a first portion which is closer to the first end portion than to the second end portion, the first end portion being electrically connected to the upper electrode and the second end portion being electrically connected to either the source or the drain through the first contact hole, the contact being electrically isolated from the lower electrode by the side-wall insulating film, the contact being made of at least a first material, at least the first end portion and the first portion being made of the first material, the upper electrode being also made of the first material so that the first end portion of the contact and the upper electrode are joined each other.