Abstract:
A thin wafer protection device includes a wafer having a plurality of semiconductor chips. The wafer has a first side and an opposite second side. A plurality of dies is over the first side of the wafer, and at least one of the plurality of dies is bonded to at least one of the plurality of semiconductor chips. A wafer carrier is over the second side of the wafer. An encapsulating layer is over the first side of the wafer and the plurality of dies, and the encapsulating layer has a planar top surface. An adhesive tape is over the planar top surface of the encapsulating layer.
Abstract:
A system and method for stacking semiconductor dies is disclosed. A preferred embodiment comprises forming through-silicon vias through the wafer, protecting a rim edge of the wafer, and then removing the unprotected portions so that the rim edge has a greater thickness than the thinned wafer. This thickness helps the fragile wafer survive further transport and process steps. The rim edge is then preferably removed during singulation of the individual dies from the wafer.
Abstract:
A method is provided for controlling substrate thickness. At least one etchant is dispensed from at least one dispenser to a plurality of different locations on a surface of a spinning substrate to perform etching. A thickness of the spinning substrate is monitored at the plurality of locations, so that the thickness of the substrate is monitored at each individual location while dispensing the etchant at that location. A respective amount of etching performed at each individual location is controlled, based on the respective monitored thickness at that location.
Abstract:
A stacked structure includes a first substrate bonded to a second substrate such that a first pad structure of the first substrate contacts a second pad structure of the second substrate. A transistor gate is formed over the second substrate, and a first conductive structure extends through the second substrate and has a top surface that is substantially planar with a top surface of the second substrate. An interlayer dielectric (ILD) layer is disposed over the transistor gate, and a passivation layer is disposed over the ILD layer and includes a second pad structure that makes electrical contact with the second conductive structure. The ILD layer includes at least one contact structure that extends through the ILD layer and makes electrical contact with the transistor gate. A second conductive structure is disposed in the ILD layer and is at least partially disposed over a surface of the first conductive structure.
Abstract:
A semiconductor structure includes a first die comprising a first substrate and a first bonding pad over the first substrate, a second die having a first surface and a second surface opposite the first surface, wherein the second die is stacked on the first die and a protection layer having a vertical portion on a sidewall of the second die, and a horizontal portion extending over the first die.
Abstract:
A method for thin wafer handling and processing is provided. In one embodiment, the method comprises providing a wafer having a plurality of semiconductor chips, the wafer having a first side and a second side. A plurality of dies are attached to the first side of the wafer, at least one of the dies are bonded to at least one of the plurality of semiconductor chips. A wafer carrier is provided, wherein the wafer carrier is attached to the second side of the wafer. The first side of the wafer and the plurality of dies are encapsulated with a planar support layer. A first adhesion tape is attached to the planar support layer. The wafer carrier is then removed from the wafer and the wafer is diced into individual semiconductor packages.
Abstract:
An integrated circuit structure includes a semiconductor substrate having a front side and a backside. A through-silicon via (TSV) penetrates the semiconductor substrate. The TSV has a back end extending to the backside of the semiconductor substrate. A redistribution line (RDL) is over the backside of the semiconductor substrate and connected to the back end of the TSV. A silicide layer is over and contacting the RDL.
Abstract:
A system and method for stacking semiconductor dies is disclosed. A preferred embodiment comprises forming through-silicon vias through the wafer, protecting a rim edge of the wafer, and then removing the unprotected portions so that the rim edge has a greater thickness than the thinned wafer. This thickness helps the fragile wafer survive further transport and process steps. The rim edge is then preferably removed during singulation of the individual dies from the wafer.
Abstract:
A method of forming integrated circuits includes laminating a patterned film including an opening onto a wafer, wherein a bottom die in the wafer is exposed through the opening. A top die is placed into the opening. The top die fits into the opening with substantially no gap between the patterned film and the top die. The top die is then bonded onto the bottom die, followed by curing the patterned film.
Abstract:
A method for singulating semiconductor wafers is disclosed. A preferred embodiment comprises forming scrub lines on one side of the wafer and filling the scrub lines with a temporary fill material. The wafer is then thinned by removing material from the opposite side of the wafer from the scrub lines, thereby exposing the temporary fill material on the opposite side. The temporary fill material is then removed, and the individual die are removed from the wafer.