Wellbody layer in tsmc

[shanmei]

For tsmc180, the nmos transistor layout has a layer of wellbody. There is no information on this layer from its design rule. Is it just a dummy layer? Thanks.

 

[erikl]

Could mean the p-substrate of the wafer, or - more likely because of its name - the p-substrate (= p-body) of an isolated p-well in n-well.

 

[k_90]

For tsmc180, the nmos transistor layout has a layer of wellbody. There is no information on this layer from its design rule. Is it just a dummy layer? Thanks.

If it's not in the design rules I'd look again, try looking for the GDS number or contact the tsmc support./