How to block dummy metal fill

[lijianheng]

Hi,

When I run DRC, there is density error. But I don't want foundry auto fill dummy metal in some part. Which layer (layer name & type in LSW) should I use to block those part?

Thx

 

[ajaytronic]

You can draw dummy Blockage layer at ther place where you don't want auto filling. for example, To block M1 metal filling at foundary, Draw M1 _dummy blockage layer.
for proper layer info, consult with ur CAD department

 

[liu675]

yes,just add dummy metal layer

 

[protonixs]

You can draw dummy Blockage layer at ther place where you don't want auto filling. for example, To block M1 metal filling at foundary, Draw M1 _dummy blockage layer.
for proper layer info, consult with ur CAD department

ajaytronic is right. you may also refer to your layer assignment table about these dummy blockage layer.

 

[vijay.kumarreddy]

In TSMC you can find DMEXCL(d1 to d8,for all metal 8 layers) layor for the dymmy metal fill exclude.