Silicon wafers

Which pair of Japanese companies holds a large share of the global silicon wafer market?

  1. AKioxia and Renesas
  2. BShin-Etsu Chemical and SUMCO
  3. CTokyo Electron and Advantest
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Answer: B. Shin-Etsu Chemical and SUMCO

The silicon wafer market is largely held by two Japanese companies, Shin-Etsu Chemical and SUMCO. Kioxia and Renesas are semiconductor device makers, and Tokyo Electron and Advantest make manufacturing and test equipment.

  • A. Kioxia makes memory and Renesas makes microcontrollers and other devices.
  • B. Correct. These two are the leading wafer makers.
  • C. Tokyo Electron makes fabrication equipment and Advantest makes testers.
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More Silicon wafers questions

  1. In the CZ method, what is the purpose of growing a thin neck just after the seed crystal at the start of pulling (necking)?
  2. What causes "slip", a problem when large-diameter wafers are heat-treated at high temperature?
  3. Which is closest to the mass of one silicon wafer 300 mm in diameter and 775 µm thick? (Silicon density is about 2.33 g/cm³.)
  4. Which method has been used to make multicrystalline silicon ingots for solar cells cheaply and in large volumes?
  5. When finishing a CZ pull, why is the ingot diameter gradually reduced (a tail cone is formed) before separating it from the melt?