RRB(Richard's Research Blog)查了一下Globalfoundries的網站,有這麼一段話:
The "Gate Last" approach to HKMG is costly and requires a number of additional processing steps. GLOBALFOUNDRIES has chosen to implement a "Gate First" approach because it is simpler and more scalable to future generations. The process flow is very similar to what was used for previous technology generations. The "Gate First" maximizes power efficiency and transistor scaling while minimizing die size and design complexity when compared to the alternative "Gate Last" approach. http://www.globalfoundries.com/technology/tech_elements.aspx