One 8-inch silicon wafer can hold hundreds of chips. The "yield rate" (the percentage of good chips on a wafer) is critical to profits and reputation, and is often one of the most carefully guarded secrets of a factory.
一片八吋晶圓，上面可以負載數百粒晶片，「良率」高低關乎獲利，也關乎榮譽，有時會是一個廠的最高機密。