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Technology Stocks : MEMC INT'L. (WFR -NYSE) The Sleeping Giant?
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To: Jonathan Edwards who wrote (2196)9/11/1997 4:25:00 AM
From: Peter Dierks   of 4697
 
Jonathan:

To build a chip it requires of any kind it requires one layer. You must have a wafer below to etch into and fill, and an additional wafer to cap off the top.

AMD and Intel's current state of the art chips are built on a five layer process. you must etch one wafer for each layer. An additional wafer is also required to seal the top.

This big wafer(this is the wrong term, my memory fades at 3:00 a.m.) is then cut into many "chips". The number of chips from each one is determined by the yeild (or determines the yield). The next step is attaching the pins. Finally it is inserted in the ceramic package. After screen printng (& applying a holographic image for P-II) you have a microprocessor ready to ship.

Hope this helps.

Peter
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