Patent ID: 7074676

Claim:
A memory film manufacturing method comprising the steps of: forming a first insulation film on a semiconductor substrate functioning as a first electrode; forming a first conductor film on the first insulation film; forming a second insulation film on a surface of the first conductor film; forming a third insulation film containing conductor particles on the second insulation film; and forming a second conductor film as a second electrode on the third insulation film, wherein the conductor particles contained in the third insulation film comprise: first conductor particles located adjacent to the first conductor film; and second conductor particles located obliquely upwardly adjacent to the first semiconductor particles, and the positions of the first conductor particles projected on a plane of the first conductor film are substantially random, and wherein assuming that a diameter or a height of the conductor particles is H, assuming that a distance between the first conductor film and the first conductor particles is S 1 , and assuming that an average of a thickness of the third insulation film is W, then there is satisfied the relation: Wâ‰¦ 2 H+S 1 .