Patent ID: 11935856
Assignee: AMKOR TECHNOLOGY SINGAPORE HOLDING PTE. LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A semiconductor device comprising:
a first redistribution layer comprising a first dielectric and a first conductive layer;
a semiconductor die mounted to and electrically connected to an upper side of the first redistribution layer, where the semiconductor die comprises a pad on a lower side of the semiconductor die and electrically connected to the upper side of the first redistribution layer, and where the lower side of the semiconductor die faces the upper side of the first redistribution layer;
a lower encapsulant that covers a lower side of the first dielectric;
a metallic ball comprising solder and coupled to a lower side of the first redistribution layer, where the metallic ball is partially embedded within the lower encapsulant, such that a portion of the metallic ball extends downward lower than a lower side of the lower encapsulant;
a conductive pillar on the upper side of the first redistribution layer, where the conductive pillar is taller from the first redistribution layer than the semiconductor die;
an upper encapsulant that encapsulates the upper side of the first redistribution layer, the conductive pillar, and the semiconductor die, where the upper encapsulant comprises an upper encapsulant side facing away from the first redistribution layer and a lower encapsulant side facing toward the first redistribution layer; and
a second redistribution layer on the upper encapsulant side, where the second redistribution layer comprises a second conductive layer that is electrically connected to the first conductive layer of the first redistribution layer through the conductive pillar,
wherein:
a first lateral side of the lower encapsulant is coplanar with a first lateral side of the upper encapsulant; and
a first lateral side of the first redistribution layer is coplanar with the first lateral side of the upper encapsulant.