Patent ID: 6933156
Filing Date: 2005-08-23
Classification: H01L

Abstract:
1. A manufacturing method of a capacitor comprising the steps of: forming a first conductive layer containing a first metal on an insulating layer; forming a second conductive layer made of a metal oxide of a second metal except iridium or ruthenium, that is different from the first metal, on the first conductive layer; forming a third conductive layer made of a third metal except iridium or ruthenium, that is different from the first metal, on the second conductive layer; forming a dielectric layer on the third conductive layer; forming a fourth conductive layer on the dielectric layer; patterning the fourth conductive layer to form a capacitor upper electrode; patterning the dielectric layer to form a capacitor dielectric layer; and patterning the first conductive layer, the second conductive layer, and the third conductive layer to form a capacitor lower electrode.