Han, I disagree with Vic's assessment since gray scale mask making is not solely
an issue of being able to vary the binary optical density with patterning.  The
actual glass is very special as well, and I believe proprietary.  That is why I
refered you to Canyon. Neal Neal RicksWafer Fab ManagerShipley Co., LLCEIF Div.
- Opto Group

ElectromaskTek4@aol.com wrote:Han,

I service equipment for a photomask shop called IC Photomask. They're located
in Chandler, AZ. They recently did a mask that had 270 million, 2.5 micron
opaque circles in a 4"x4" area of a 5"x5" plate. So I think gray scale masks
should be no problem for them. Their number is 480-892-2420

Best Regards,

Vic




Hi all,
>
> Does any one know where can I get a gray scale mask to be made?
>
> Thanks
>
> regards
>
> Han
>
> RMIT University

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