Abstract:
Methods and apparatus for performing dicing of die on wafer interposers. Methods are disclosed that include receiving an interposer assembly including one or more integrated circuit dies mounted on a die side of an interposer substrate and having scribe areas defined in spaces between the integrated circuit dies, the interposer having an opposite side for receiving external connectors; mounting the die side of the interposer assembly to a tape assembly, the tape assembly comprising an adhesive tape and preformed spacers disposed between and filling gaps between the integrated circuit dies; and sawing the interposer assembly by cutting the opposite side of the interposer in the scribe areas to make cuts through the interposer, the cuts separating the interposer into one or more die on wafer assemblies. Apparatuses are disclosed for use with the methods.
Abstract:
A package includes a die having a conductive pad at a top surface of the die, a stud bump over and connected to the conductive pad, and a redistribution line over and connected to the stud bump. An electrical connector is over and electrically coupled to the redistribution line.
Abstract:
A device includes a substrate having a front side and a backside, a through-via extending from the backside to the front side of the substrate, and a conductive pad on the backside of the substrate and over the through-via. The conductive pad has a substantially planar top surface. A conductive bump has a non-planar top surface over the substantially planar top surface and aligned to the through-via. The conductive bump and the conductive pad are formed of a same material. No interface is formed between the conductive bump and the conductive pad.
Abstract:
A package component includes a substrate, wherein the substrate has a front surface and a back surface over the front surface. A through-via penetrates through the substrate. A conductive feature is disposed over the back surface of the substrate and electrically coupled to the through-via. A first dielectric pattern forms a ring covering edge portions of the conductive feature. An Under-Bump-Metallurgy (UBM) is disposed over and in contact with a center portion of the conductive feature. A polymer contacts a sidewall of the substrate. A second dielectric pattern is disposed over and aligned to the polymer. The first and the second dielectric patterns are formed of a same dielectric material, and are disposed at substantially a same level.
Abstract:
A wafer level package includes a semiconductor die bonded on a supporting wafer. The semiconductor die has at least a step recess at its substrate. An underfill layer is formed between the semiconductor die and the supporting wafer. Moreover, the height of the underfill layer is limited by the step recess. During a fabrication process of the wafer level package, the step recess helps to reduce the stress on the wafer level package.
Abstract:
An embodiment is a structure comprising a substrate, a first die, and a second die. The substrate has a first surface. The first die is attached to the first surface of the substrate by first electrical connectors. The second die is attached to the first surface of the substrate by second electrical connectors. A size of one of the second electrical connectors is smaller than a size of one of the first electrical connectors.
Abstract:
Germanium field effect transistors and methods of fabricating them are described. In one embodiment, the method includes forming a germanium oxide layer over a substrate and forming a metal oxide layer over the germanium oxide layer. The germanium oxide layer and the metal oxide layer are converted into a first dielectric layer. A first electrode layer is deposited over the first dielectric layer.
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 bottom chase and a top chase of a molding system form a cavity to house a molding carrier and one or more devices. The molding carrier is placed in a desired location defined by a guiding component. The guiding component may be entirely within the cavity, or extend above a surface of the bottom chase and extend over a contacting edge of the top chase and the bottom chase, so that there is a gap between the edge of the top chase and the edge of the molding carrier which are filled by molding materials to cover the edge of the molding carrier. Releasing components may be associated with the top chase and/or the bottom chase, which may be a plurality of tape roller with a releasing film, or a plurality of vacuum holes within the bottom chase, or a plurality of bottom pins with the bottom chase.
Abstract:
A semiconductor device includes a substrate formed of a first semiconductor material; two insulators on the substrate; and a semiconductor region having a portion between the two insulators and over the substrate. The semiconductor region has a bottom surface contacting the substrate and having sloped sidewalls. The semiconductor region is formed of a second semiconductor material different from the first semiconductor material.