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what is the difference between metal layers M1 M2 M3 ...to upper metal

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preethem.s

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Hello,

Please share with me difference between metal layers and advantages of using lower metal and higher metal and also disadvantages

Thanks
 

Dear preethem.s,

The top metal is thicker than the other metal layers. That allows it to be more conductive.

Greetings.
 

ok thanks, Can you please tell me why the shielding lines is connected to ground Why

ok thanks, Can you please tell me why the shielding lines is connected to ground Why not VDD

please explain me about double patterning technology. Why M1,M2 M3 is fabricated in double patterning Why they are not fabricating above M3 in double patterning
 

Re: ok thanks, Can you please tell me why the shielding lines is connected to ground

preethem.s said:
Can you please tell me why the shielding lines is connected to ground Why not VDD
Click to expand...
See this thread!

preethem.s said:
please explain me about double patterning technology. Why M1,M2 M3 is fabricated in double patterning Why they are not fabricating above M3 in double patterning
Click to expand...

See this Wiki explanation. Metal structures above M3 usually use wider structures than those below, that's why they don't need double patterning.
 

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