Cut Poly

[cyberakhil]

Hi,

What does cut poly and cut metal 1 exactly mean and what is their significance in layout

 

[gvandevalk]

Cut Poly|Metal is a layer (independant of the conductor) that removes the conductor when it overlaps it.

So the Poly_Conductor = POLY AND_NOT CUT_POLY.

The more significant question is Why do we have Cut layers.

The simple reason is that in some cases we can achieve higher density of the final layout when there is an independent cut layer to the conductor.

 

[cyberakhil]

Thanks a lot gvandevalk

 

[gvandevalk]

Search cutting in https://en.wikipedia.org/wiki/Extreme_ultraviolet_lithography for more information

 

[cyberakhil]

Thanks a lot for the link!

Search cutting in https://en.wikipedia.org/wiki/Extreme_ultraviolet_lithography for more information

 

[Fred Chen]

Thanks a lot for the link!

Also try: https://en.wikipedia.org/wiki/Multiple_patterning

 

[Fred Chen]

Cut Poly|Metal is a layer (independant of the conductor) that removes the conductor when it overlaps it.

So the Poly_Conductor = POLY AND_NOT CUT_POLY.

The more significant question is Why do we have Cut layers.

The simple reason is that in some cases we can achieve higher density of the final layout when there is an independent cut layer to the conductor.

Indeed, features of opposite polarity and different pitch should be done as separate exposure(s) when the k1 is low (<0.5). These are basically the spaces at the line tips.