Patent ID: 6995070

Claim:
A method of fabricating a thin film capacitor, the method comprising: forming an interlayer insulating film over an entire surface of a semiconductor substrate; forming a first via and a second via in the interlayer insulating film that are spaced a predetermined distance from each other by selectively etching the interlayer insulating film; filling in the first via and the second via with a first metal material, wherein the first metal material is planarized by chemical mechanical polishing to expose the interlayer insulating film such that the first via and the second via remain filled with the first metal material, wherein opposing surfaces of the first metal material in the first via and the second via are contacted by the interlayer insulating film; forming a capacitor window by etching the interlayer insulating film the entire predetermined distance between the first via and the second via to have a predetermined depth such that semiconductor substrate is exposed in the capacitor window, wherein one surface of the first metal material in the first via remains in contact with the interlayer insulating film and one surface of the first metal material in the second via remains in contact with the interlayer insulating film; forming a dielectric layer on an inner wall of the capacitor window and the exposed semiconductor substrate; and forming a second metal material to fill in the capacitor window.