Abstract: Integrated circuit packages with cavity are disclosed. A disclosed integrated circuit package includes a first die. A second die may be coupled to the first die by attaching the first die to a top surface of the second die. A blocking element such as a barrier structure may be formed that surrounds the second die. A cavity may be formed between the blocking element and the first die that encloses the second die. The barrier structure may help prevent underfill material from entering the cavity during underfill deposition processes. A heat spreading lid may cover the first die, second die and package substrate.

Abstract: Integrated circuit packages with openings surrounding a conductive via on a substrate layer are disclosed. An integrated circuit package may include a substrate layer with upper and lower surfaces. A conductive via may extend between the upper and lower surfaces of the substrate layer. The integrated circuit package further includes multiple openings in the substrate layer that may be distributed evenly in the substrate layer surrounding the conductive via. The multiple openings reduce signal insertion loss of the conductive via.

Abstract: An integrated circuit package may include a first integrated circuit die attached to a front surface of a second integrated circuit die. An intermediate layer made of a molding compound is formed to surround the second integrated circuit die in a “fan-out” arrangement while leaving a surface of the second integrated circuit die exposed. Accordingly, a group of via holes is then formed in the intermediate layer and filled with a conductive material. Such a configuration forms a dual-sided stacking structure. The stacking structure may also be applicable for package-on-package packages and fan-out wafer-level chip scale packages, in which the stacking structure is formed between two heterogeneous or homogeneous integrated circuit packages.

Abstract: A heat spreader structure includes a planar portion and a slanted portion. The slanted portion extends at an angle from an edge of the planar portion. The first slanted portion includes a first slot. A second heat spreader structure includes a planar member, a first edge member and a second edge member. The first edge member extends only perpendicularly from a first edge of the planar member whereas the second edge member extends from the second edge of the planar member and has a slanted surface with respect to that of the planar member. In addition to that, the first and second heat spreader structure may be formed using different manufacturing methods.

Abstract: A silicon interposer includes a plurality of patterned metal layers formed on a silicon wafer portion and a plurality of through-silicon vias extending through the silicon wafer portion. The through-silicon vias have an interdiffusion conductive element.

Abstract: Integrated circuit packages with heat dissipation function are disclosed. A disclosed integrated circuit package includes a first die attached on a top surface of a second die. The second die may be coupled to a thermally conductive block. The thermally conductive block may be embedded in a cavity formed in a package substrate. A heat spreading lid may be disposed over the package substrate. The integrated circuit package may be disposed on a printed circuit substrate via solder bumps or balls. The printed circuit substrate may have heat dissipation paths to dissipate heat from the integrated circuit package.