Opps.........I didn't read the question thoroughly last time....

The photo dielectric material used by MicroVia for their PhotoLink HDI
process is made by Ciba Geigy. I'm sure you can still contact MicroVia
for more info.

Keith



Keith Larson wrote:
>
> Hi Kevin,
>
> I know MicroVia, Inc. in Winter Park, FL is doing photo defined HDI
> processing in volume production on rigid boards. You'll have to contact
> them directly to inquire about flex.
>
> Best regards,
>
> Keith Larson
> Circuit Technology Inc.
>
> [log in to unmask] wrote:
> >
> > Who are the suppliers of photo-definable dielectric materials for PWB
> > based HDI circuit?  Would these materials work for flex circuit?
> > Many thanks in advance for your help.
> >
> > Kevin Chen
> > 3M Corp.
> > 651 737-9914
> >
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