Archived posting to the Leica Users Group, 1999/01/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]No. Back in the old days, when computer (logic) chips were made from masks, quite often laid out by hand, they were photographed (layer by layer) with a special process camera, reducing them a million times or more, using special optics that were designed entirely for the green spectrum, and appropriate lights were used to illuminate the master. Of course, that was then. Now it is all done via computer. Design on a Sun workstation, route and tape-out via computer programs, directly to the fab process. Think of it like the new printing presses that don't need plates. Use a digital camera to photograph a product, Page Maker to lay it out, trapp, etc, then send the o/p file directly to the press which electrostatically generates plate images from the digital file. No film, camera, separations, halftones, etc... (the old stuff) involved. Basically, semiconductor photolithography equipment was a niche market, which is now non-existent. Jim At 08:34 PM 1/9/99 -0500, you wrote: >At 17:19 -0800 09/01/99, Berg Na wrote: >[ . . . ] Canon and Nikon are currently >the only major suppliers of semiconductor photolithography equipment >with unmatched resolution capabilities. >[ . . . ] > Though off topic, what do these machines serve for ? > Something like Linotronic ??? > Sorry, I have to learn somewhere... > > AJQ > >- - - - - - - - - - - - - - - - - - - - - - - > > Before you judge me, > try hard to love me, > look within your heart then ask, > have you seen my childhood. > Michael Jackson >