22 September 2016 3 2K Report

Hi,

I am just wondering how people define primary flat and secondary flat. I know in and Silicon Wafer, there are both p and n type. 

90° angle between flats indicates it is a p type silicon wafer

180° angle between flats indicates it is a n type silicon wafer

Absence of secondary flat indicates it is a p type silicon wafer

45° angle between flats indicates it is a n type silicon wafer

However, my question is why would people define in this way? Is that simply byAsk convention or there is a reason to do so?

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