摘要:
An intregrated circuit package, which has an intregrated circuit die thereto, is mounted to a system board. The ground trace of the system board is connected to the package, which has a pluality of ground leads on its surface. An electrically conductive epoxy is placed on the ground leads and adheres the package lid to the package board and ground the package lid. A heat sink is mounted to the package lid with an electrically conductive adhesive or electrically conductive slips that extend from a flange of the package lid to a flange of the heat sink to ground the heat sink.
摘要:
A system-in-a-package based flash memory card including an integrated circuit package occupying a small overall area within the card and cut to conform to the shape of a lid for the card. An integrated circuit may be cut from a panel into a shape that fits within and conforms to the shape of lids for a finished memory card, such as for example an SD Card. The integrated circuit package may be a system-in-a-package, a multi-chip module, or other arrangement where a complete electronic system is formed in a single package.
摘要:
A low profile semiconductor package is disclosed including at least first and second stacked semiconductor die mounted to a substrate. The first and second semiconductor die are separated by a low profile intermediate adhesive layer in which the wire bond loops from the first semiconductor die are embedded. After the intermediate layer is applied, the second semiconductor die may be stacked on top of the intermediate layer. A dielectric layer may be formed on a back surface of the second semiconductor die. As the back side of the second semiconductor die is an electrical insulator, the intermediate layer need not space the wire bond loops from the second semiconductor die as in the prior art, and the apex of bond wires may come into contact with the dielectric layer. The intermediate layer may thus be made thinner in comparison to conventional stacked semiconductor die configurations.
摘要:
A dummy circuit pattern is disclosed on a surface of a substrate for a semiconductor package, the dummy circuit pattern including straight line segments having a length controlled so as not to generate stresses within the line segments above a desired stress. The dummy circuit pattern may be formed of lines, or contiguous or spaced polygons, such as hexagons. Portions of the dummy circuit pattern may also be formed with an orientation, size and position that are randomly selected.
摘要:
Improved techniques for stacking integrated circuit dies within an integrated circuit package are disclosed. These improved techniques allow greater stacking density of integrated circuit dies within an integrated circuit package. Additionally, the improved stacking techniques permit conventional bonding techniques for electrical connection of the various integrated circuit dies to each other or to a substrate. These improved approaches are particularly useful for stacking same size (and often same function) integrated circuit dies within integrated circuit packages. One example of such an integrated circuit package is a non-volatile memory integrated circuit package that contains multiple, like-sized memory storage integrated circuit dies arranged in a stack.
摘要:
A semiconductor device including a semiconductor die in a die stack under-filled with a film. Once the semiconductor die are formed, they may be stacked and interconnected. The interconnection may leave a small space between semiconductor die in the die stack. This space is advantageously completely filled using a vapor deposition process where a coating is deposited as a vapor which flows over all surfaces of the die stack, including into the spaces between the die in the stack. The vapor then deposits on the surfaces between and around the die and forms a film which completely fills the spaces between the die in the die stack. The material used in the vapor deposition under-fill process may for example be a member of the parylene family of polymers, and in embodiments, may be parylene-N.
摘要:
A method of fabricating a semiconductor die and a low profile semiconductor package are disclosed. The semiconductor package may include at least first and second stacked semiconductor die mounted to a substrate. The first and/or second semiconductor die may be fabricated with localized cavities through a bottom surface of the semiconductor die, along a side edge of the semiconductor die. The one or more localized cavities in a side take up less than the entire side. Thus, the localized cavities allow low height stacking of semiconductor die while providing each die with a high degree of structural integrity to prevent cracking or breaking of the die edge during fabrication.
摘要:
A system and method are disclosed for applying a die attach epoxy to substrates on a panel of substrates. The system includes a window clamp having one or more windows through which the epoxy may be applied onto the substrate panel. The size and shape of the one or more windows correspond to the size and shape of the area on the substrate to receive the die attach epoxy. Once the die attach epoxy is sprayed onto the substrate through the windows of the window clamp, the die may be affixed to the substrate and the epoxy cured in one or more curing steps. The system may further include a clean-up follower for cleaning epoxy off of the window clamp, and a window cleaning mechanism for cleaning epoxy off of the sidewalls of the windows of the window clamp.
摘要:
A method of fabricating a low profile semiconductor package is disclosed including at least first and second stacked semiconductor die mounted to a substrate. The first and/or second semiconductor die may be fabricated with a plurality of redistribution pads formed over and electrically coupled to a plurality of bond pads. After the semiconductor die are formed and diced from the wafer, the die may be mounted to the substrate using a low profile reverse wire bond according to the present invention. In particular, a wedge bond may be formed between the wire and the redistribution pad without having to use a second wire bond ball on the die bond pad as in conventional reverse ball bonding processes.
摘要:
A leadframe design for forming leadframe-based semiconductor packages having curvilinear shapes is disclosed. The leadframes may each include one or more curvilinear slots corresponding to curvilinear edges in the finished and singulated semiconductor package. After encapsulation, the integrated circuit packages on the panel may be singulated by cutting the integrated circuits from the leadframe panel into a plurality of individual integrated circuit packages. The slots in the leadframe advantageously allow each leadframe to be singulated using a saw blade making only straight cuts.