Patent ID: 8183610
Filing Date: 2012-05-22
Classification: H01L

Abstract:
1. A nonvolatile memory comprising: a semiconductor substrate; a cell transistor comprising: a second insulating film on the semiconductor substrate over the cell transistor; a first contact plug through the second insulating film configured to connect to the first diffusion layer; a second contact plug through the second insulating film configured to connect to the second diffusion layer; a ferroelectric capacitor comprising a ferroelectric film between first and second electrodes, the first electrode is connected to a top face of the first contact plug; a first conductive spacer connected to a top face of the second contact plug comprising a first material in the first electrode; a third insulating film on the second insulating film and over side faces of the first electrode, the ferroelectric film and the first conductive spacer, the third insulating film comprising a first opening exposing a top face of the first conductive spacer; and a first wiring on the third insulating film comprising a first portion configured to connect to the second electrode and a second portion connected to the first conductive spacer through the first opening comprising a second material in the second electrode.