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Please explain the basis behind adding the DRC rules

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vinayshivakumar

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Regarding the DRC rules

Hi ,
Can someone associated with a FAB explain the basis behind adding the DRC rules - especially ones like notch , dogbone ,metal density , interlayer spacing etc. How are these failure modes identified ?
 

Re: Regarding the DRC rules

vinayshivakumar said:
Hi ,
Can someone associated with a FAB explain the basis behind fixing the DRC rules - especially ones like notch , dogbone ,metal density , interlayer spacing etc. How are these failure modes identified ?
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For metal density, you draw additional metal layer in places where it is possible.
Basically in a design, each metal layer must cover more than some percentage of entire chip.


diva/dracula checks this?
 

Re: Regarding the DRC rules

Sorry, should have been clearer - basically what i wanted to ask is not how to fix but why some of these exotic rules exist in the first place .....
 

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