Patent ID: 7554151

Claim:
A non-volatile memory device comprising: a substrate having a base layer of a first conductivity type; a source layer of a second conductivity type different from the first conductivity type and suitable for electrode use covering the base layer; a well layer of a conductivity type less conductive than the source layer disposed over the source layer, with spaced apart drain regions of the second conductivity type suitable for electrode use, and a trench between the drain regions; a conductive charge storage element in electrically floating relation seated in the trench; a first oxide layer over the well; a control poly layer over the first oxide layer having a thickness of 50 Å or less; a second oxide layer over the control poly layer; an additional layer of the second conductivity type disposed between the well layer and the first oxide layer and disposed outside a region between the drain regions; an insulative layer over the second oxide layer; poly contacts disposed over the second oxide layer and over the charge storage element, at least a portion of the poly contacts disposed in a notch of the insulative layer in which the notch is positioned over the conductive charge storage element; and wherein the control poly layer is electrically transparent for charged particle tunneling through the poly.