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How ic fabrication is done?

ICFABRICATION

Mar 9, 2017
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Hello,
How basic normal gates ic are designed like OR AND NOT in ic what is procedure??
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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Designed, or manufactured? There's a big difference.
 

BobK

Jan 5, 2010
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The are designed by people sitting in cubicles using CAD programs.

The are manufactured by a many step photo-etching process in which different layers of doping material and metals are deposited on pure silicon wafers in a clean room.

Bob
 

OBW0549

Jul 5, 2016
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Try typing "How ic fabrication is done?" into Google. Lots of good information comes up, enough to keep you busy reading and learning for a long, long time.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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From a wafer shop. I use wafersRus or eBay.
 

ICFABRICATION

Mar 9, 2017
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hey the link of wafer silicon is not opening where to see?
please tell how to learn this technology...
 

ICFABRICATION

Mar 9, 2017
6
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how to understand ic processor designing ?
how so many bjt are used in it??
amd athlon ii pin diagram
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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This is not something you can do at home.
 

BobK

Jan 5, 2010
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However, if you have about $1B, you could build a fab. You could probably pick up one that was going out of business for $100M or so.

From wikipedia: https://en.wikipedia.org/wiki/Semiconductor_fabrication_plant

Fabs require many expensive devices to function. Estimates put the cost of building a new fab over one billion U.S. dollars with values as high as $3–4 billion not being uncommon. TSMC invested $9.3 billion in its Fab15 300 mm wafer manufacturing facility in Taiwan.[1]

The central part of a fab is the clean room, an area where the environment is controlled to eliminate all dust, since even a single speck can ruin a microcircuit, which has features much smaller than dust. The clean room must also be damped against vibration and kept within narrow bands of temperature and humidity. Controlling temperature and humidity is critical for minimizing static electricity.

The clean room contains the steppers for photolithography, etching, cleaning, doping and dicing machines. All these devices are extremely precise and thus extremely expensive. Prices for most common pieces of equipment for the processing of 300 mm wafers range from $700,000 to upwards of $4,000,000 each with a few pieces of equipment reaching as high as $50,000,000 each (e.g. steppers). A typical fab will have several hundred equipment items.

Bob
 
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