Wafer Manufacturing Process

Ingot Production

• Silicon
  • Metallurgical-grade silicon (MGS)
  • Upgraded MGS (UMGS)
  • Electronic-grade silicon (EGS)
• Crystal Growth
  • Czochralski growth (CZ)
  • Float-zone growth (FZ)
• Preparation
  • Ingot cropping
  • Ingot squaring
  • Rod grinding

Wafer Processing

• Slicing
  • Wire sawing
  • Internal diameter sawing (IDs)
• Profile control
  • Wafer edge profiling
  • Wafer lapping
  • Wafer etching
  • Wafer polishing
  • Epitaxial wafer
• Preparation
  • Wafer inspection
  • Wafer packaging
  • Wafer shipping