Patent ID: 11876074
Assignee: NANYA TECHNOLOGY CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device, comprising:
a package structure comprising a first side and a second side opposite to the first side, wherein the package structure comprises a plurality of bottom package conductive pads spacedly embedded at the second side of the package structure and having bottom sides of the bottom package conductive pads coplanar with the second side of the package structure;
a base structure having a first side facing toward the second side of the package structure, wherein the base structure comprises a plurality of base structure pads spacedly embedded at the first side of the base structure and having top sides of the base structure pads coplanar with the first side of the base structure and aligned with the bottom package conductive pads of the package structure respectively;
an interposer structure positioned over the first side of the package structure;
a first die positioned over the interposer structure;
a second die positioned over the interposer structure;
a plurality of bottom interconnectors positioned between the second side of the package structure and the first side of the base structure, and respectively comprising:
a bottom exterior layer coupled between the second side of the package structure and the first side of the base structure to electrically connect the package structure with the base structure via the bottom interconnectors, wherein the bottom exterior layer, having a barrel cross section, has a top opening and a bottom opening; and
a cavity enclosed by the bottom exterior layer, wherein the top openings and the bottom openings of the bottom exterior layers are sealed by the bottom package conductive pads and the base structure pads respectively to seal the cavities of the bottom interconnectors between the second side of the package structure and the first side of the base structure;
a plurality of middle interconnectors positioned between the first side of the package structure and the interposer structure, wherein the package structure further comprises a plurality of top package conductive pads spacedly embedded at the first side of the package structure and having top sides of the top package conductive pads coplanar with the first side of the package structure, wherein the plurality of middle interconnectors respectively comprises:
a middle exterior layer coupled between the first side of the package structure and the interposer structure to electrically connect the package structure with the interposer structure via the middle interconnectors, wherein the middle exterior layer, having a barrel cross section, has a top opening and a bottom opening; and
a cavity enclosed by the interposer structure, the package structure, and the middle exterior layer, wherein the top openings and the bottom openings of the middle exterior layers are sealed by a bottom side of the interposer structure and the top package conductive pads respectively to seal the cavities of the middle interconnectors between the interposer structure and the first side of the package structure, wherein the interposer structure comprises a plurality of through interposer vias spacedly embedded at the bottom side of the interposer structure and aligned with the top package conductive pads of the package structure, wherein the middle exterior layers are electrically between the through interposer vias and the top package conductive pads;
a plurality of through package vias positioned along the package structure, wherein upper ends of the through package vias are electrically coupled to and directly contacted with the top package conductive pads while bottom ends of the through package vias are electrically coupled and directly contacted with the bottom package conductive pads, such that the plurality of middle interconnectors and the plurality of bottom interconnectors are electrically coupled through the plurality of through package vias, wherein each of the middle interconnectors and the bottom interconnectors has a diameter gradually reducing toward the top opening and the bottom opening thereof;
a bottom underfill layer positioned between the package structure and the base structure, and surrounding the plurality of bottom interconnectors, wherein a thickness of the bottom underfill layer is larger than a height of each of the bottom interconnectors between the top opening and the bottom opening; and
a first resist layer formed on the first side of the package structure to encircle the bottom openings of the middle interconnectors, a second resist layer formed on the bottom side of the interposer structure to encircle the top openings of the middle interconnectors, and a middle underfill layer positioned between the first side of the package structure and the interposer structure to seal the first resist layer and the second resist layer, and surrounding the plurality of middle interconnectors.