Abstract:
A test structure to detect vertical leakage in a multi-layer flip chip pad stack or similar semiconductor device. The test structure is integrated into the semiconductor device when it is fabricated. A metal layer includes at least two portions that are electrically isolated from each other; one portion being disposed under a test pad, and another portion being disposed under a pad associated with a pad structure being tested. The metal layer in most cases is separated from a top metal layer directly underlying the pads by an inter-metal dielectric (IMD) layer. A metal layer portion underlying the pad to be tested forms a recess in which a conductive member is disposed without making electrical contact. The conductive line is electrically coupled to a test portion of the same or, alternately, of a different metal layer. The test structure may be implemented on multiple layers, with recesses portions underlying the same or different pads.
Abstract:
Multiple test circuits are formed in a test board for each test chip. Alternatively and/or additionally, a test circuit extends through at least two layers among metallization layers of the test chip.
Abstract:
A system-in-package (SiP) package is provided. In one embodiment, the SiP package comprises a substrate having a first surface and a second surface opposite the first surface, the substrate having a set of bond wire studs on bond pads formed on the second surface thereof; a first semiconductor chip having a first surface and a second surface opposite the first surface, wherein the first surface of the first semiconductor chip is mounted to the second surface of the substrate by means of solder bumps; an underfill material disposed between the first semiconductor chip and the substrate, encapsulating the solder bumps; a second semiconductor chip having a first surface and a second surface opposite the first surface, wherein the first surface of the second semiconductor chip is mounted to the second surface of the first semiconductor chip; and a set of bond wires electrically coupled from the second semiconductor chip to the set of bond wire studs on the substrate.
Abstract:
A system-in-package (SiP) package is provided. In one embodiment, the SiP package comprises a substrate having a first surface and a second surface opposite the first surface, the substrate having a set of bond wire studs on bond pads formed on the second surface thereof; a first semiconductor chip having a first surface and a second surface opposite the first surface, wherein the first surface of the first semiconductor chip is mounted to the second surface of the substrate by means of solder bumps; an underfill material disposed between the first semiconductor chip and the substrate, encapsulating the solder bumps; a second semiconductor chip having a first surface and a second surface opposite the first surface, wherein the first surface of the second semiconductor chip is mounted to the second surface of the first semiconductor chip; and a set of bond wires electrically coupled from the second semiconductor chip to the set of bond wire studs on the substrate.
Abstract:
A package structure includes a substrate; a die over and flip bonded on the substrate; a heat sink over the die; and one or more spacer separating the heat sink from the substrate.
Abstract:
A pad structure includes a first metal-containing layer formed over a substrate. A first passivation layer is formed over the first metal-containing layer. The first passivation layer has a first opening partially exposing the first metal-containing layer. A pad layer is formed over the first passivation layer, covering the first opening. The pad layer includes a probing region configured to be contacted by a probe and a bonding region configured to have a wired bonded to it. The probing region contacts the first metal-containing layer through the first opening, and the bonding region overlies a portion of the first passivation layer.
Abstract:
A semiconductor package provides a ball grid array, BGA, formed on a package substrate. The apices of the solder balls of the BGA are all at the same height, even if the package substrate is non-planar. Different solder ball pad sizes are used and tailored to compensate for non-planarity of the package substrate that may result from thermal warpage. Larger size solder ball pads are formed at relatively-high locations on the package substrate. An equal amount of solder is formed on each of the solder ball pads to produce solder balls having different heights.
Abstract:
A test board includes a first chip mounting area, a first input area, a second input area, a first output area, and a second output area. The test board also includes a first conductive pattern, a second conductive pattern, a third conductive pattern, and a fourth conductive pattern. The first conductive pattern electrically connects a first pin of the first input area and a first pin of the first chip mounting area. The second conductive pattern electrically connects a first pin of the second input area and a second pin of the first chip mounting area. The third conductive pattern electrically connects a first pin of the first output area and a third pin of the first chip mounting area. The fourth conductive pattern electrically connects a first pin of the second output area and a fourth pin of the first chip mounting area.
Abstract:
A test structure to detect vertical leakage in a multi-layer flip chip pad stack or similar semiconductor device. The test structure is integrated into the semiconductor device when it is fabricated. A metal layer includes at least two portions that are electrically isolated from each other; one portion being disposed under a test pad, and another portion being disposed under a pad associated with a pad structure being tested. The metal layer in most cases is separated from a top metal layer directly underlying the pads by an inter-metal dielectric (IMD) layer. A metal layer portion underlying the pad to be tested forms a recess in which a conductive member is disposed without making electrical contact. The conductive line is electrically coupled to a test portion of the same or, alternately, of a different metal layer. The test structure may be implemented on multiple layers, with recesses portions underlying the same or different pads.
Abstract:
An improved via arrangement for a bonding pad structure is disclosed comprising an array of vias surrounded by a line via. The line via provides a barrier to cracks in the dielectric layer encompassing the via array. Although cracks are able to spread relatively unhindered between the vias of the via array, they are blocked by the line via and thus can not spread to neighboring regions of the chip or wafer. The line via can be provided in a variety of shapes and dimensions, to suit a desired application. Additionally, due to its substantially uninterrupted length, the line via provides added strength to the bond pad.