Rick, Rob Sheffield had shown this argument in the AEPT consortium.  It is
intriguing.  One thing that may also need to be considered is impedance
amplitude in addition to just how much charge can be accessed by the chip.
Note figure 8 in the paper we presented at the 2nd annual EP conference
where software simulation showed an advantage to the higher k even though
the dielectric thickness was the same.  If you were to take the 0.2 micron
thick examples and do the same kind of software simulation it might be very
interesting to see the results.

dave

(See attached file: Polyimide Paper Presented at IPC 040617.doc)

David R. McGregor
Sr. Development Associate
DuPont Co.
14 T. W. Alexander Dr.
Research Triangle Park, NC    27709
Phone: (919) 248-5064
email: [log in to unmask]



             Richard Ulrich
             <[log in to unmask]
             >                                                          To
             Sent by:                  [log in to unmask]
             EmbeddedNet                                                cc
             <[log in to unmask]
             org>                                                  Subject
                                       [EM] CircuiTree Column Draft

             10/12/2004 10:54
             AM


             Please respond to
                   D-37
               Sub-Committee
                   Forum
             <[log in to unmask]
               ORG>; Please
                respond to
              Richard Ulrich
             <[log in to unmask]
                     >






As usual, I'm asking all of you experts out there to be my proofreader.
  This one is a little but "out there" and I'd appreciate your comments.
  I'll be at CARTS/Europe for the next week if I'm slow to respond.

- Rick


[attachment "Ulrich CircuiTree Col 7.doc" deleted by David R
McGregor/AE/DuPont]


******************************************************
Dr. Richard Ulrich
Professor
Dept. of Chemical Engineering
3202 Bell Center
Univ. of Arkansas
Fayetteville, AR   72701

[log in to unmask]
(479) 575-5645
******************************************************




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