Patent ID: 7880221
Filing Date: 2011-02-01
Classification: H01L

Abstract:
1. An electronic device comprising: a first transistor structure lying within a first region of a substrate, wherein the first transistor structure comprises a first charge storage layer, a first gate electrode overlying the first charge storage layer, and a first metal-semiconductor film overlying the first gate electrode; a second transistor structure spaced apart from the first transistor structure and overlying a second region of the substrate, wherein the second transistor structure comprises a gate dielectric layer, a second gate electrode overlying the second gate dielectric layer, and a second metal-semiconductor film overlying the second gate electrode, wherein the first metal-semiconductor film has an averaged thickness that is significantly different than an averaged thickness of the second metal-semiconductor film; and wherein the first transistor structure comprises a first source/drain region within the substrate underlying a portion of the first gate electrode and the second transistor structure comprises a second source/drain region within the substrate underlying a portion of the second gate electrode, wherein the first source/drain region has an average depth that is substantially the same as the second source/drain region.