US Patent 10163800 Package structure with dummy feature in passivation layer

Package structures are provided. The package structure includes an integrated circuit die. The package structure also includes a package layer surrounding the integrated circuit die. There is an interface between the integrated circuit die and the package layer. The package structure further includes a redistribution structure below the integrated circuit die and the package layer. The redistribution structure includes active conductive lines electrically connected to the integrated circuit die. The redistribution structure also includes a dummy conductive line between the active conductive lines. The dummy conductive line extends across the interface.