Patent ID: 6646307
Filing Date: 2003-11-11
Classification: H01L

Abstract:
A double gate MOSFET comprising:a bottom gate including a bottom gate electrode and a bottom gate dielectric formed from a high-K material disposed over an upper surface of the bottom gate electrode, the bottom gate electrode defining lateral sidewalls; a semiconductor body region disposed over the bottom gate dielectric and the bottom gate electrode, and disposed between a source and a drain, each of the source and the drain having a lightly doped extension and a deep doped region; a top gate including a top gate electrode disposed over the body region and a top gate dielectric separating the top gate electrode and the body region, the top gate electrode and the bottom gate electrode defining a channel within the body region and interposed between the extension of the source and the extension of the drain; and a sidewall spacer laterally disposed adjacent each lateral sidewall of the bottom gate electrode, the sidewall spacers respectively defining the placement of the deep doped region of the source and the deep doped region of the drain such that the deep doped regions are each disposed laterally adjacent the bottom gate electrode and separated from the bottom gate electrode by at least the respective sidewall spacer.