US Patent 10319607 Package-on-package structure with organic interposer

A device comprises a substrate having a die mounted on the first side of the substrate and a moldable underfill (MUF) disposed on the first side of the substrate and around the die. An interposer is mounted on the first side of the substrate, with the interposer having lands disposed on a first side of the interposer. The interposer mounted to the substrate by connectors bonded to a second side of the interposer, the connectors providing electrical connectivity between the interposer and the substrate. A package is mounted on the first side of the interposer and is electrically connected to the lands. At least one of the lands is aligned directly over the die and wherein a pitch of the connectors is different than a pitch of the lands.