Lightwave Logic Inc (LWLG)

[Richard_LaRiv]

In Lebby’s LD presentation yesterday, he said LWLG’s fab uses 4 inch wafers (100mm). This is news to me. We do know the large fabs like GlobalFoundries use 300mm wafers in production. This might not seem like a noteworthy difference since the diameter is only three times larger. However, traveling back in time to my high school geometry class, the area of a circle is p * r^2. This means the surface area of each wafer is 7854 square millimeters for the 100mm and 70686 square millimeters for the 300mm wafer. So, the 300mm wafer produced by GlobalFoundries fits nearly ten times the amount of chips on it.

For me, this is one more data point that helps explain why they are having daily calls with the foundries and partners to work towards completion of these PDKs. Perhaps they need to ensure the polymer is consistent across the entire wafer that has about ten times the surface area compared to the prototypes produced at LWLG’s fab. I can’t imagine what this would entail, but I am looking forward to the announcement that this work is complete.