Slater Matsil, LLP
Rigid interconnect structures in package-on-package assemblies
System and method are disclosed for creating a rigid interconnect between two substrate mounted packages to create a package-on-package assembly. A solid interconnect may have a predetermined length configured to provide a predetermined package separation, may be cylindrical, conical or stepped, may be formed by extrusion, casting, drawing or milling and may have an anti-oxidation coating. The interconnect may be attached to mounting pads on the top and bottom packages via an electrically conductive adhesive, including, but not limited to solder and solder paste. A solder preservative or other anti-oxidation coating may be applied to the mounting pad. A package-on-package assembly with solid interconnects may have a top package configured to accept at least one electronic device, with the solid interconnects mounted between the top package and a bottom package to rigidly hold the package about parallel to each other.
Taiwan Semiconductor Manufacturing Company, Ltd.
H H H H H H H H H H H H H H H
H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L
additional inventional additional inventional inventional inventional additional additional additional inventional additional inventional inventional inventional additional
Yung Ching Chen-Hua Mirng-Ji Jiun Yi Chien-Hsiun
Chen Yu Lii Wu Lee