STI from all four sides

[saha.123]

Hi

For any gate, Will STI effect come from only left& right side of the corresponding gate or it'll come from both top & bottom sides too??Could anyone explain it in detail

Thanks in advance

 

[rangermad]

STI totally surrounds active areas so ... yes, STI effects the gate region from all four sides.

 

[dick_freebird]

You are most concerned about where (active*poly) touches
STI (==!active). If poly rund north / south, the STI at the
east and west ends is not really going to do anything, it's
"stood off" by the S/D implant & contacts away from the
active gate.

"Affects" all four sides, perhaps, if you want to quibble.
But get quantitative and only two will really show anything
significant.