Patent ID: 6597037
Filing Date: 2003-07-22
Classification: G11C,H01L

Abstract:
A floating gate transistor that is fabricated upon a substrate, the transistor comprising:a first conductivity type semiconductor pillar, having top and side surfaces and formed upon the substrate; a first source and drain region, of a second conductivity type, formed from a portion of the pillar proximal to the substrate; a second source and drain region, of the second conductivity type, formed in a portion of the pillar that is distal to the substrate and separate from the first source and drain region; a gate dielectric formed on at least a portion of the side surface of the pillar; a floating gate, substantially adjacent to a portion of the side surface of the pillar and separated therefrom by the gate dielectric; a single control line, substantially adjacent to the floating gate and insulated therefrom, wherein the single control line is associated with a pair of adjacent pillars; and an intergate dielectric, interposed between the floating gates and the single control line.