Patent ID: 7868441

Claim:
A package-on-package secure module comprising: a first ball grid array (BGA) package portion having a first substrate member, a first integrated circuit die and an array of first bond balls, wherein the first bond balls are disposed on a first side of the first substrate member, wherein the first integrated circuit die is fixed to a second side of the first substrate member opposite the first side, and wherein the first substrate member includes an array of first lands that is disposed on the second side of the first substrate member; a second BGA package portion having a second substrate member, a second integrated circuit die and an array of second bond balls, wherein the second bond balls are fixed to the first lands of the first substrate member of the first BGA package portion, wherein the second integrated circuit die is fixed to a second side of the second substrate member opposite the first side, and wherein the second substrate member includes an array of second lands that is disposed on the second side of the second substrate member; and a BGA mesh cap comprising an array of third bond balls and a third substrate member, wherein the third bond balls are fixed to the second substrate member, wherein the third substrate member is fixed to no integrated circuit die but wherein the substrate member includes an anti-tamper security mesh of conductors, wherein a conductor of the anti-tamper security mesh is electrically coupled to the first integrated circuit die of the first BGA package portion, wherein the third substrate member has a rectangular planar upper surface, a rectangular planar bottom surface, and four side edges, and wherein the rectangular planar bottom surface extends to the first side edge, to the second side edge, to the third side edge and to the fourth side edge.