Patent ID: 7800161

Claim:
A non-volatile memory, comprising: a rectangular array of trenches extending across a surface in first and second directions that are orthogonal to each other, the individual trenches having a cross-sectional shape in the first direction including opposite sidewalls joined by a floor, two charge storage elements positioned within individual trenches along their opposite side walls and having portions that extend a distance outside the trenches above the surface, a first set of control gates positioned within individual trenches between the two charge storage elements in the first direction and connected to a first set of conductive lines having lengths extending in the second direction and being spaced apart in the first direction, a second set of control gates positioned over the surface between adjacent trenches in the first direction and field coupled with the portions of the charge storage elements extending out of trenches on opposite sides thereof in the first direction, the second set of control gates being connected to a second set of conductive lines having lengths extending in the second direction and spaced apart in the first direction, ions implanted in the floors of the trenches and in the surface between the trenches in the first direction to form source and drain regions, a first dielectric layer between the first set of control gates and the trench floors that field isolate the first set of control gates from the trench floors and the source and drain regions implanted therein, and a second dielectric layer between the second set of control gates and the surfaces between the trenches that field isolate the second set of control gates from the surfaces and the source and drain regions implanted therein.