Patent ID: 6867446

Claim:
A semiconductor memory device having a capacitor in which a thin film of a dielectric material having a high dielectric constant or of a ferroelectric material is used as a capacitive insulation film, wherein an interlayer insulation film formed between the capacitor and a wiring layer formed at the upper part thereof comprises a multilayered film consisting of a first insulation film and a second insulation film laid upon the other; said first insulation film being a lower layer and being formed of a film containing an organic matter, so as to cover a memory region including at least said capacitor and to be in contact with said capacitive insulation film, and said second insulation film being an upper layer and being formed of a hard-mask material having barrier properties to hydrogen, and an electrode of said wiring layer is connected to said capacitor through openings formed by running through said first insulation film and said second insulation film.