Patent ID: 6465831
Filing Date: 2002-10-15
Classification: H01L

Abstract:
A MOSFET device comprising:a semiconductor substrate having an active region, the active region including a first substrate surface at a first level of the substrate, a second substrate surface at a second level of the substrate, the second level being lower than the first level, and a third substrate surface extending from the second substrate surface to the first substrate surface; a first gate formed over the third substrate surface; source/drain regions formed in the first substrate surface and the second substrate surface laterally separated from the first gate; and first conductive contacts formed on the source/drain regions, wherein the substrate further comprises a second active region, the second active region including: a fourth substrate surface at a third level of the substrate, the third level being lower than the first level; a fifth substrate surface extending from the fourth substrate surface to the first substrate surface; a second gate formed over the fifth substrate surface, the second gate being integrally formed with the first gate; and a second conductive contact formed on the second gate.