Patent ID: 6913970
Filing Date: 2005-07-05
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: forming a transistor by forming a gate electrode formed over a semiconductor substrate and forming a first impurity region and a second impurity region in the semiconductor substrate; forming a first insulating film for covering the transistor above the semiconductor substrate; forming a capacitor, that has a dielectric film made of any one of ferroelectric material and high-dielectric material and an upper electrode and a lower electrode formed to put the dielectric film therebetween, on the first insulating film; forming a second insulating film above the capacitor and the first insulating film; planarizing a surface of the second insulating film; forming a first hole on the first impurity region and forming a second hole on the lower electrode of the capacitor, by patterning the first insulating film and the second insulating film; forming a first conductive plug and a second conductive plug made of same material in the first hole and the second hole respectively; forming a third hole on the upper electrode of the capacitor by patterning the second insulating film; forming a conductive film in the third hole and on the second insulating film; forming a first conductive pattern connected to the upper electrode and the first conductive plug via the third hole and a second conductive pattern connected to an upper surface of the second conductive plug, by patterning the conductive film; and forming a third insulating film on the first conductive pattern and the second conductive pattern.