Patent ID: 6015991
Filing Date: 2000-01-18
Classification: H01L

Abstract:
A field effect transistor comprising:a first region serving as a source;a second region serving as a drain, said first region and said second region both being formed in a substrate;a thin gate oxide; anda gate electrode,said gate electrode being asymmetric, having a substantially vertical sidewall at an angle .THETA.9 with respect to the substrate and a sloped sidewall sloped at an angle .THETA.8 with respect to the substrate, .THETA.8 and .THETA.9 being unequal,said second region extending underneath said sloped sidewall, wherein part of said second region which extends underneath said gate electrode is more lightly doped than the remaining part of said second region, and whereinsaid second region has a sloped junction edge with an angle .THETA.10 underneath said gate electrode.