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Technology Stocks : Dupont Photomasks (DPMI) -- Ignore unavailable to you. Want to Upgrade?

To: TI2, TechInvestorToo who wrote (394)	3/19/1998 12:21:00 PM
From: Larry Brew	Respond to of 955

TI2, << last entry on topic, cut me some slack out there >> Why argue? WE're both confident of our sources. You can be sure leading edge isn't made public, so take it from there. Remember DPMI is the one saying processing with existing equipment will take processing down to .1u. Sort of kills the photoresist issue. :-) Thats another subject though, and none of this is relevant to DPMI stock valuation. DUV in itself is an industry terminology anyway. Let's talk angstroms. The real world. 193nm is 1930 angstroms, defined as ultraviolet. Below 900 angstroms is extreme uv. Below 70 angstroms is x-ray, and below .1 angstroms is gamma. That's as low as you go. Even .0000001 angstroms is still gamma. Just a point of interest to let you know where technology is headed. Putting it in perspective, .18u processing is 1800 angstroms. You can see that the wavelength of light has a close correlation to being able to resolve geometry sizes. Gives one a good idea where we can go with x-ray. I sure wouldn't want the challenge of exposing a 2500 angstrom geometry with a light wavelenght of 2480 angstroms. Of coarse doing 1800 angstrom geometries with 1930a light is even more challenging. Glad to be away from all that, and into stocks. No technical problems here, as I don't use technical charts. :-) Larry