8.6. Design rules & minimum density

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Design rules are restrictions on layouts that guarantee a minimum yield despite all the variability in fabrication. Density rules are a special kind of design rule where dummy features are inserted to prevent the sagging of deposited oxide between metal and polysilicon tracks.

[@brutusbarnabus8098]

Thank you!!! I scoured the internet looking for an explanation and found nothing that made sense! You explained in perfectly in just a few minutes! Now I know why we do metal fill for DFM. Thank you again! :)

[@nagagopal2309]

Can I know why we need to clean maximum densities

[@bhanukallepalli2676]

very good explanation.

[@electrontube4284]

Glad it was helpful!