The following is a list of equipment where 4 inch round substrates are allowed.
Single wafer tool with auto loading from a cassette. Pieces need a pocket carrier wafer for transport. Wafers heated by lamps.
Adjustable spin speeds, spin time. SNF-acceptable resists or polymers. Ebeam resists
Direct Write
Two programs: Singe and HMDS prime or Singe only. No Resist allowed!
1:1 Contact Aligner. Backside align, including IR.
1:1 Contact Aligner. Backside align.