US Patent 10083913 Fan-out POP structure with inconsecutive polymer layer

A package includes a device die, a molding material molding at least a portion of the device die therein, and a through-via substantially penetrating through the molding material. The package further includes a dielectric layer contacting the through-via and the molding material, and a die attach film attached to a backside of the device die. The die attach film includes a portion extending in the dielectric layer.