摘要:
A multipackage module has multiple die of various types and having various functions and, in some embodiments, the module includes a digital processor, an analog device, and memory. A first die, having a comparatively large footprint, is mounted onto first die attach region on a surface of a first package substrate. A second die, having a significantly smaller footprint, is mounted upon the surface of the first die, on a second die attach region toward one edge of the first die. The first die is electrically connected by wire bonds to conductive traces in the die-attach side of the substrate. The second die is electrically connected by wire bonds to the first package substrate, and may additionally be electrically connected by wire bonds to the first die. In some embodiments a spacer is mounted upon the first die, on a spacer attach region of the surface of the first die that is not within the die attach region, and which may be generally near a margin of the first die. A land grid array (LGA) package is inverted and mounted upon the spacer, with one margin of the LGA package near the edge of the spacer, so that much of the LGA package overhangs the second die. In other embodiments an additional spacer is mounted upon the first die, on a second spacer attach region that is not within the die attach region and not within the first spacer attach region, and the inverted LGA package is mounted upon both spacers. In still other embodiments a first spacer having a thickness approximating the thickness of the second die is mounted in a spacer attach region upon the first die; additional spacers are mounted upon both the first spacer and the second die, and the inverted LGA package is mounted upon the additional spacers. The LGA package is electrically connected to the first package substrate by wire bonds between bond sites on the LGA package and bond sites on the BGA package.
摘要:
A method for making a multipackage module that has multiple die of various types and having various functions and, in some embodiments, the module includes a digital processor, an analog device, and memory. A first die, having a comparatively large footprint, is mounted onto first die attach region on a surface of a first package substrate. A second die, having a significantly smaller footprint, is mounted upon the surface of the first die, on a second die attach region toward one edge of the first die. The first die is electrically connected by wire bonds to conductive traces in the die-attach side of the substrate. The second die is electrically connected by wire bonds to the first package substrate, and may additionally be electrically connected by wire bonds to the first die.
摘要:
A multipackage module has multiple die of various types and having various functions and, in some embodiments, the module includes a digital processor, an analog device, and memory. A first die, having a comparatively large footprint, is mounted onto first die attach region on a surface of a first package substrate. A second die, having a significantly smaller footprint, is mounted upon the surface of the first die, on a second die attach region toward one edge of the first die. The first die is electrically connected by wire bonds to conductive traces in the die-attach side of the substrate. The second die is electrically connected by wire bonds to the first package substrate, and may additionally be electrically connected by wire bonds to the first die. In some embodiments a spacer is mounted upon the first die, on a spacer attach region of the surface of the first die that is not within the die attach region, and which may be generally near a margin of the first die. A land grid array (LGA) package is inverted and mounted upon the spacer, with one margin of the LGA package near the edge of the spacer, so that much of the LGA package overhangs the second die. In other embodiments an additional spacer is mounted upon the first die, on a second spacer attach region that is not within the die attach region and not within the first spacer attach region, and the inverted LGA package is mounted upon both spacers. In still other embodiments a first spacer having a thickness approximating the thickness of the second die is mounted in a spacer attach region upon the first die; additional spacers are mounted upon both the first spacer and the second die, and the inverted LGA package is mounted upon the additional spacers. The LGA package is electrically connected to the first package substrate by wire bonds between bond sites on the LGA package and bond sites on the BGA package.
摘要:
A method for making a multipackage module that has multiple die of various types and having various functions and, in some embodiments, the module includes a digital processor, an analog device, and memory. A first die, having a comparatively large footprint, is mounted onto first die attach region on a surface of a first package substrate. A second die, having a significantly smaller footprint, is mounted upon the surface of the first die, on a second die attach region toward one edge of the first die. The first die is electrically connected by wire bonds to conductive traces in the die-attach side of the substrate. The second die is electrically connected by wire bonds to the first package substrate, and may additionally be electrically connected by wire bonds to the first die.
摘要:
A multipackage module has multiple die of various types and having various functions and, in some embodiments, the module includes a digital processor, an analog device, and memory. A first die, having a comparatively large footprint, is mounted onto first die attach region on a surface of a first package substrate. A second die, having a significantly smaller footprint, is mounted upon the surface of the first die, on a second die attach region toward one edge of the first die. The first die is electrically connected by wire bonds to conductive traces in the die-attach side of the substrate. The second die is electrically connected by wire bonds to the first package substrate, and may additionally be electrically connected by wire bonds to the first die.
摘要:
A multipackage module has multiple die of various types and having various functions and, in some embodiments, the module includes a digital processor, an analog device, and memory. A first die, having a comparatively large footprint, is mounted onto first die attach region on a surface of a first package substrate. A second die, having a significantly smaller footprint, is mounted upon the surface of the first die, on a second die attach region toward one edge of the first die. The first die is electrically connected by wire bonds to conductive traces in the die-attach side of the substrate. The second die is electrically connected by wire bonds to the first package substrate, and may additionally be electrically connected by wire bonds to the first die. In some embodiments a spacer is mounted upon the first die, on a spacer attach region of the surface of the first die that is not within the die attach region, and which may be generally near a margin of the first die. A land grid array (LGA) package is inverted and mounted upon the spacer, with one margin of the LGA package near the edge of the spacer, so that much of the LGA package overhangs the second die. In other embodiments an additional spacer is mounted upon the first die, on a second spacer attach region that is not within the die attach region and not within the first spacer attach region, and the inverted LGA package is mounted upon both spacers. In still other embodiments a first spacer having a thickness approximating the thickness of the second die is mounted in a spacer attach region upon the first die; additional spacers are mounted upon both the first spacer and the second die, and the inverted LGA package is mounted upon the additional spacers. The LGA package is electrically connected to the first package substrate by wire bonds between bond sites on the LGA package and bond sites on the BGA package.
摘要:
A semiconductor package subassembly includes a die affixed to, and electrically interconnected with, a die attach side of a first package substrate, and a second substrate having a first side and a second (“land”) side, mounted over the first package with the first side of the second substrate facing the die attach side of the first package substrate, and supported by a spacer or a spacer assembly. Z-interconnection of the package and the substrate is by wire bonds connecting the first and second substrates. The assembly is encapsulated in such a way that both the land side of the second substrate (one side of the assembly) and a portion of the land side of the first package substrate (on the opposite side of the assembly) are exposed, so that second level interconnection and interconnection with additional components may be made.
摘要:
A semiconductor multi-package module has stacked lower and upper packages, each of which includes a die attached to a substrate, in which the second package is inverted, in which the upper and lower substrates are interconnected by wire bonding, and in which the inverted second package comprises a bump chip carrier package. Also, a method for making a semiconductor multi-package module, by providing a lower molded package including a lower substrate and a die, affixing an upper bump chip carrier package including an upper substrate in inverted orientation onto the upper surface of the lower package, and forming z-interconnects between the upper and lower substrates.
摘要:
A plastic ball grid array semiconductor package employs a metal heat spreader having supporting arms embedded in the molding cap, in which the embedded supporting arms are not directly affixed to the substrate or in which any supporting arm that is affixed to the substrate is affixed using a resilient material such as an elastomeric adhesive. Also, a process for forming the package includes steps of placing the heat spreader in a mold cavity, placing the substrate over the mold cavity such that the die support surface of the substrate contacts the supporting arms of the heat spreader, and injecting the molding material into the cavity to form the molding cap. The substrate is positioned in register over the mold cavity such that as the molding material hardens to form the mold cap the embedded heat spreader becomes fixed in the appropriate position in relation to the substrate. Also, a process for forming the package includes steps of placing the heat spreader onto the substrate such that at least one of the supporting arms of the heat spreader is affixed to the substrate using a resilient fixative such as an elastomeric adhesive, placing a mold cavity over the heat spreader, and injecting the molding material into the cavity. The elastomeric adhesive holds the heat spreader in the appropriate position in relation to the substrate during injection of the molding material, and as the molding material hardens to form the mold cap the embedded heat spreader becomes fixed in the appropriate position in relation to the substrate. In some embodiments the under surface of the heat spreader at the interface between the heat spreader and the molding compound is roughened, or includes a black copper oxide layer, to improve adhesion and contact between the heat spreader and the molding material. The invention can provide significant improvements in manufacturability and reliability in use.
摘要:
A semiconductor multi-package module has stacked lower and upper packages, each of which includes a die attached to a substrate, in which the second package is inverted, in which the upper and lower substrates are interconnected by wire bonding, and in which the inverted second package comprises a wire bond carrier package. Also, a method for making a semiconductor multi-package module, by providing a lower molded package including a lower substrate and a die, affixing an upper wire bond carrier package including an upper substrate in inverted orientation onto the upper surface of the lower package, and forming z-interconnects between the upper and lower substrates.