Patent ID: 6716756
Filing Date: 2004-04-06
Classification: H01L

Abstract:
A method for forming a capacitor of a semiconductor device comprising the steps of:forming a first insulation layer on the upper surface of a semiconductor substrate; forming a second insulation layer on the upper surface of the first insulation layer; forming a third insulation layer on the upper surface of the second insulation layer; etching a predetermined depth of the third insulation layer over a first region of the semiconductor substrate so that a thickness of the third insulation layer over the first region is thinner than a thickness of the third insulation layer over a second region of the semiconductor substrate; sequentially etching the third insulation layer and the second insulation layer to form at least one hole over the second region of the semiconductor substrate; forming a conductive layer over the semiconductor substrate; performing Chemical Mechanical Polishing (CMP) until an upper surface of the third insulation layer is exposed; and removing portions of the third insulation layer from the second region.