Patent ID: 8247857
Filing Date: 2012-08-21
Classification: H01L

Abstract:
1. A nonvolatile semiconductor memory device comprising: a semiconductor member; a memory film provided on a surface of the semiconductor member; first and second control gate electrodes provided on the memory film, spaced from each other, and arranged along a direction parallel to the surface; and a single-layered intercellular dielectric film provided between the first and the second control gate electrodes and spacing the first and second control gate electrodes, wherein the single-layered intercellular dielectric film in physical contact with the memory film; a first portion of the memory film located immediately below the single-layered intercellular dielectric film having a dielectric constant lower than a dielectric constant of another portions of the memory film located immediately below the first and second control gate electrodes, and a concentration of hydrogen or a halogen element in the first portion of the memory film located immediately below the single-layered intercellular dielectric film being higher than the concentration of hydrogen or the halogen element in the another portions of the memory film located immediately below the first and second control gate electrode electrodes.