Abstract:
A method of fabricating a three-dimensional integrated circuit comprises attaching a wafer to a carrier, mounting a plurality of semiconductor dies on top of the wafer to form a wafer stack. The method further comprises forming a molding compound layer on top of the wafer, attaching the wafer stack to a tape frame and dicing the wafer stack to separate the wafer stack into a plurality of individual packages.
Abstract:
A system and method for conductive pillars is provided. An embodiment comprises a conductive pillar having trenches located around its outer edge. The trenches are used to channel conductive material such as solder when a conductive bump is formed onto the conductive pillar. The conductive pillar may then be electrically connected to another contact through the conductive material.
Abstract:
A device includes a bottom chip and an active top die bonded to the bottom chip. A dummy die is attached to the bottom chip. The dummy die is electrically insulated from the bottom chip.
Abstract:
A system and method for plating a contact is provided. An embodiment comprises forming protective layers over a contact and a test pad, and then selectively removing the protective layer over the contact without removing the protective layer over the test pad. With the protective layer still on the test pad, a conductive layer may be plated onto the contact without plating it onto the test pad. After the contact has been plated, the protective layer over the contact may be removed.
Abstract:
A method of fabricating a three-dimensional integrated circuit comprises attaching a wafer to a carrier, mounting a plurality of semiconductor dies on top of the wafer to form a wafer stack. The method further comprises forming a molding compound layer on top of the wafer, attaching the wafer stack to a tape frame and dicing the wafer stack to separate the wafer stack into a plurality of individual packages.
Abstract:
A work piece includes a copper bump having a top surface and sidewalls. A protection layer is formed on the sidewalls, and not on the top surface, of the copper bump. The protection layer includes a compound of copper and a polymer, and is a dielectric layer.
Abstract:
A device includes a top dielectric layer having a top surface. A metal pillar has a portion over the top surface of the top dielectric layer. A non-wetting layer is formed on a sidewall of the metal pillar, wherein the non-wetting layer is not wettable to the molten solder. A solder region is disposed over and electrically coupled to the metal pillar.
Abstract:
A package component is free from active devices therein. The package component includes a substrate, a through-via in the substrate, a top dielectric layer over the substrate, and a metal pillar having a top surface over a top surface of the top dielectric layer. The metal pillar is electrically coupled to the through-via. A diffusion barrier is over the top surface of the metal pillar. A solder cap is disposed over the diffusion barrier.
Abstract:
Provided is a method for forming a composite barrier layer with superior barrier qualities and superior adhesion properties to both dielectric materials and conductive materials as the composite barrier layer extends throughout the semiconductor device. The composite barrier layer may be formed in regions where it is disposed between two conductive layers and in regions where it is disposed between a conductive layer and a dielectric material. The composite barrier layer may consist of various pluralities of layers and the arrangement of layers that form the composite barrier layer may differ as the barrier layer extends throughout different sections of the device. Amorphous layers of the composite barrier layer generally form boundaries with dielectric materials and crystalline layers generally form boundaries with conductive materials such as interconnect materials.
Abstract:
A semiconductor device having a nonconductive cap layer comprising a first metal element. The nonconductive cap layer comprises a first metal nitride, a first metal oxide, or a first metal oxynitride over conductive lines and an insulating material between the conductive lines. An interface region may be formed over the top surface of the conductive lines, the interface region including the metal element of the cap layer. The cap layer prevents the conductive material in the conductive lines from migrating or diffusing into adjacent subsequently formed insulating material layers. The cap layer may also function as an etch stop layer.