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Politics : Formerly About Advanced Micro Devices
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To: Maxwell who wrote (34668)7/17/1998 3:42:00 PM
From: Yousef  Read Replies (1) of 1572559
 
Maxwell,

Re: "If I am "process ignorance" you must be "PROCESS STUPID".

Maxwell, please "grow up" ... act like an "adult". My point is that
Copper damascene processing will not significantly improve the speed
of processors in .25um or .18um technologies. It is primarily HYPE to
get new customers for IBM, others ... The reason is that Copper thickness
control is much, much worse than Aluminum technology. This is due to control issues
from the trench etch and "dishing" during polish ... thus thickness control
and resistivity specs are much wider than for Aluminum (dep/etch). Designers
must use the worse case resistivity specs when modeling and simulating
designs ... in fact the resistivity specs need to be so wide for Copper
that they overlap the much tighter Aluminum specs. Thus there is little
gain in "effective" resistivity going to Copper.

Hopefully, this helps you better understand the subject ... that you are
HYPE'ing.

Make It So,
Yousef
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