We Can Figure This Out.org
Virtual Lab: Making an Integrated Circuit (IC)
 University of Virginia
             
 
© 2003-Present, John C. Bean
 
Mask #4 for metal patterning:

Photographic emulsion is applied.

Portions of emulsion are exposed to UV light projecting thru shadow mask.

UV light breaks bonds in emulsion molecules.

Exposed emulsion is removed by solvent.

 
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