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skill code to do round internal 90 degree corner for intersected rectangular shapes

Hi,

i am working on high voltage devices design using skill code and there are requirement to fill the 90 degree angle internal corners with rounded shapes.

There are multiple inner 90 degree angles in different layers. i am not getting idea how to fix this corners.

I am attaching here the snapshot for the reference. can somebody help me?

Thanks and Regards

Raj

AurelBuche over 1 year ago

Hi Raj,

The function you are looking for is leModifyCorner as explained in this article :
Cadence Support : Looking for a working example of leModifyCorner command used for rounding a polygon corner

You might need to run leMergeShapes before

Cheers

Aurélien
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Rajtripathi over 1 year ago in reply to AurelBuche

Hi Aurélien,

as i am using pcells and if i am using "LeModifyCorner" gds export is showing error.

If you have any code example then i can refer to that. That will will more helpful for me.

Regards

Raj
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AurelBuche over 1 year ago in reply to Rajtripathi

In this case you will have to write the code to generate the points of the rounded corner [and probably make sure they are rounded to manfacturing grid].

This is not very complicated geometrical code though. I believe using complex numbers is the more efficient way to do it as you can calculate angles using phase function and lengths using abs

Are you sure that you need a pCell ?

In many cases creating a GUI that generates a flat but fixed cell is way easier and also safer

Cheers

Aurélien
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Andrew Beckett over 1 year ago in reply to Rajtripathi

Raj,

This probably won't help you right now, but if you were able to use PCell Designer to create the PCell, that provides a corners command that provides the ability to do this in a PCell-safe way. Contact your account team if you're interested in looking at PCell Designer.

Regards,

Andrew
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