Patent ID: 7535046
Filing Date: 2009-05-19
Classification: H01L

Abstract:
1. A dielectric memory comprising: an interlayer insulation film on a semiconductor substrate; a contact plug in the interlayer insulation film; an oxygen diffusion prevention layer on an upper surface of the contact plug; a first ozone TEOS film on the interlayer insulation film, the first ozone TEOS film covering the oxygen diffusion prevention layer; a plasma CVD oxide film on the first ozone TEOS film; a capacitor formed in an opening which penetrates through the first ozone TEOS film and the plasma CVD oxide film and reaches an upper surface of the oxygen diffusion prevention layer, the capacitor including a bottom electrode, a dielectric film, and a top electrode; and an insulation film on the plasma CVD oxide film, the insulation film covering the capacitor.