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[SOLVED] Half dummy : use and advantages

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Rubinms88

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can anyone explain briefly about advantages of using half dummies in layout?
I think dummies are used to prevent over etching of poly..pls explain purpose of dummies..
 

Rubinms88

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leo_o2

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Yes. According to the book "Art of Layout", dummy poly is used to keep the same etching speed. the etching speed is related to poly space. If dummy poly is added, the poly space will be same, so delta W will be kept same for every segment.
 

Rubinms88

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Thank you leo_o2..can you explain the advantages of using half dummies?

---------- Post added at 05:50 ---------- Previous post was at 04:58 ----------

Following link is explanation of sizing of dummy transistors
https://www.edaboard.com/thread151876.html....
 

Rubinms88

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Thanks a lot leo_o2...

---------- Post added at 12:25 ---------- Previous post was at 11:46 ----------

can anyone post image of half dummy used in layout...
 
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