Real wafers have the chip patterning going to the edge and this can results and often does in partial dies. There is no reason not too so this and the edges ar

Real wafers have the chip patterning going to the edge and this can results and often does in partial dies. There is no reason not too so this and the edges are also often used for calibration and (potentially) destructive testing. The only area of the wafer that will not be exposed is the notch, it’s always on one side of the circle and it’s used for moving the wafer around, this is why you often see wafers with one of the sides cut off giving it the flat tire shape.