Patent ID: 7960790

Claim:
A double-gate transistor comprising: a back gate electrode located above a substrate; a back gate dielectric layer located above said back gate electrode; a front gate dielectric layer located above said back gate dielectric layer; a front gate electrode layer above said front gate dielectric layer and vertically aligned with said back gate electrode; a transistor body disposed above said back gate dielectric layer, wherein said transistor body extends beyond sidewall edges of said front gate electrode layer, said back gate electrode having a layer of oxide formed below said transistor body and on either side of a central mesa portion of said back gate electrode, said central mesa portion of said back gate electrode extends upward from a lower portion of the back gate electrode and has a length that is less than a length of said lower portion, and wherein said central mesa portion of said back gate electrode is vertically aligned to said front gate electrode layer; and source and drain electrodes on opposite sides of said transistor body.