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Re:TSMC experimenting with rectangular wafers vs. round for ... by TanjB on Friday June 21, 2024 @06:17PM (#40754437)
No, this is panels from which interposers will be made. Which are now larger than chips and rectangular, so wasted edges from a 300mm wafer are high. The proposed size is much larger than chip-grade ingots.

They don't need perfect silicon. It can be grown on a continuous ribbon which is sliced into panel sizes like they do for solar cells. If they need a perfect surface they can deposit some pure Si to finish it. Maybe we will eventually see that replace ingots for chip grade.

Re:TSMC experimenting with rectangular wafers vs. round for ... by specialist on Sunday June 23, 2024 @10:40AM (#40767776)
TIL https://en.wikipedia.org/wiki/Interposer

The interposer is the layer between chips and their package. Per RTFA, TMSC is trying to fit more chips per interposer.

Neat.