US Patent 8987915 Semiconductor structure and manufacturing method thereof

A method of manufacturing a semiconductor structure includes several operations. The several operations include placing a plurality of dies on a carrier; defining a first zone and a second zone in a top surface of the carrier; calculating a first coverage ratio in the first zone; calculating a second coverage ratio in the second zone; disposing a dummy block on a specified location of the top surface of the carrier if the difference between the first coverage ratio and the second coverage ratio is greater than a predetermined value; forming a molding compound on the carrier.