1. A semiconductor device comprising memory cells, each memory cell including:
a semiconductor substrate;
a first gate insulating film formed over the semiconductor substrate;
a first gate electrode formed over the first gate insulating film;
a second gate insulating film including an insulating film for charge storage formed over the semiconductor substrate and over a side wall of the first gate electrode; and
a second gate electrode formed over the second gate insulating film, adjacent with the first gate electrode through the second gate insulating film,
wherein the second gate electrode is formed of a first polycrystalline silicon film formed over the second gate insulating film and a second polycrystalline silicon film formed over the first polycrystalline silicon film.
2. A semiconductor device comprising memory cells according to claim 1,
wherein the first polycrystalline silicon film has a first portion extending along a surface of the semiconductor substrate and a second portion extending along a direction perpendicular to the surface of the semiconductor substrate.
3. A semiconductor device comprising memory cells according to claim 1,
wherein the second electrode is in the form of a side wall.
4. A semiconductor device comprising memory cells according to claim 1,
wherein the second gate insulating film includes:
a first silicon oxide film formed over the semiconductor substrate and over the side wall of the first gate electrode;
a silicon nitride film formed over the first silicon oxide film; and
a second silicon oxide film formed over the silicon nitride film,
wherein the silicon nitride film is the insulating film for charge storage.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. The combination with a drawer having a wall of a quick-assembly drawer guide adapted to fit onto an underside of a said wall of a said drawer, said drawer guide comprising an elongated shaped body provided with a first flange adapted to underlie the underside of said wall and a second flange at an angle to said first flange and adapted to lie alongside one side of said wall, a first attachment member on said first flange opposite said second flange and engageable with an opposite side of said wall, and means enabling deformation of said first flange in a region of said first attachment member and in a plane of said first flange to a position in which said first attachment member is spaced from said second flange by substantially a thickness of said wall, said first attachment member including a tab bent out of a plane of said first flange about a bending line perpendicular to a longitudinal axis of said body.
2. The combination defined in claim 1 wherein said first flange has a width prior to said deformation which is less than a minimum thickness of said wall of said drawer.
3. The combination defined in claim 1, further comprising at least one second attachment member on said second flange engageable with said one side of said wall opposite to said first attachment member.
4. The combination defined in claim 3 wherein said tab has a hook at an end thereof and is bendable from said plane into a position perpendicular to said plane.
5. The combination defined in claim 4 wherein said first attachment member includes two of said tabs arranged facing each other.
6. The combination defined in claim 5 wherein said tabs having have bending lines perpendicular to an axis of said body.
7. The combination with a drawer having a wall of a quick-assembly drawer guide adapted to fit onto an underside of said wall of a said drawer, said drawer guide comprising an elongated shaped body provided with a first flange adapted to underlie the underside of said wall and a second flange at an angle to said first flange and adapted to lie alongside one side of said wall, a first attachment member on said first flange opposite said second flange and engageable with an opposite side of said wall, and means enabling deformation of said first flange in a region of said first attachment member to a position in which said first attachment member is spaced from said second flange by substantially a thickness of said wall, said body comprising at least one second attachment member on said second flange engage able with said one side of said wall opposite to said first attachment member, said first attachment member comprising two tabs in a plane of first flange having hooks at ends thereof and bendable from said plane into positions perpendicular to said plane, said means enabling deformation comprising at least one slot in said first flange parallel to an axis of said body and defining a staple supporting the two tabs on a portion of said first flange.
8. The combination defined in claim 7 wherein said slot has widened zones at ends thereof to facilitate deformation of said portion and displacement of said staple and said tabs away from said second flange.
9. The combination defined in claim 7 wherein said second attachment member engages in said one side of said wall equidistantly between said tabs.