摘要:
An integrated circuit has a semiconductor substrate and an interconnect layer that mechanically relatively weak and susceptible to cracks and delamination. In the formation of the integrated circuit from a semiconductor wafer, a cut is made through the interconnect layer to form an edge of the interconnect layer. This cut may continue completely through the wafer thickness or stop short of doing so. In either case, after cutting through the interconnect layer, a reconditioning layer is formed on the edge of the interconnect layer. This reconditioning layer seals the existing cracks and delaminations and inhibits the further delamination or cracking of the interconnect layer. The sealing layer may be formed, for example, before the cut through the wafer, after the cut through the wafer but before any packaging, or after performing wirebonding between the interconnect layer and an integrated circuit package.
摘要:
A bond pad (200) has a first wire bond region (202) and a second wire bond region (204). In one embodiment, the first wire bond region (202) extends over a passivation layer (18). In an alternate embodiment, a bond pad (300) has a probe region (302), a first wire bond region (304), and a second wire bond region (306). In one embodiment, the probe region (302) and the wire bond region (304) extend over a passivation layer (18). The bond pads may have any number of wire bond and probe regions and in any configuration. The ability for the bond pads to have multiple wire bond regions allows for multiple wire connections to a single bond pad, such as in multi-chip packages. The ability for the bond pads to extend over the passivation layer also allows for reduced integrated circuit die area.
摘要:
A bond pad for an electronic device such as an integrated circuit makes electrical connection to an underlying device via an interconnect layer. The bond pad has a first layer of a material that is aluminum and copper and a second layer, over the first layer, of a second material that is aluminum and is essentially free of copper. The second layer functions as a cap to the first layer for preventing copper in the first layer from being corroded by residual chemical elements. A wire such as a gold wire may be bonded to the second layer of the bond pad.
摘要:
A semiconductor package (10) uses a plurality of thermal conductors (56-64) that extend upward within an encapsulant (16) from one or more thermal bond pads (22, 24, 26) on a die (14) to disperse heat. The thermal conductors may be bond wires or conductive stud bumps and do not extend beyond a lateral edge of the die. One or more of the thermal conductors may be looped within the encapsulant and exposed at an upper surface of the encapsulant. In one form a heat spreader (68) is placed overlying the encapsulant for further heat removal. In another form the heat spreader functions as a power or ground terminal directly to points interior to the die via the thermal conductors. Active bond pads may be placed exclusively along the die's periphery or also included within the interior of the die.
摘要:
A combination mixing pitcher having a mixer subassembly that incorporates an impeller which is reciprocally longitudinally slidably movable but not rotatable within the pitcher. The impeller is fixed to one end of a plunger rod that reciprocates slidably through a matingly engagable axial channel in a lid that peripherally closes the pitcher mouth. The impeller employs a plurality of flat, radially pitched, fan shaped blades that are in radially equally spaced relationship to each other and that extend between a central hub and a peripheral polygonally configured rim. The mixer subassembly maximizes mixing of a liquid in the pitcher with a minimum of time and energy and with no spillage.
摘要:
A portable wound care kit sized, shaped, and configured to carry only articles necessary for wound care treatment. In one embodiment, the wound care kit contains only a container of wound treatment medicament and two or more wound coverings. However, the wound care kit may also be configured to carry wound cleansing wipes or wound wash. The wound care kit is configured to permit ready and easy access to the wound care treatment articles.
摘要:
An integrated circuit die (10) includes a substrate (64), a plurality of metal interconnect layers (62) formed over the substrate (64), an insulating layer (58), a first pad (12), a second pad (14), and a probe pad (16). The first pad (12) is formed over the insulating layer (58) at an edge (11) of the integrated circuit die (10). The second pad (14) is formed over the insulating layer (58) adjacent to the first pad (12) on a side of the first pad (12) that is opposite to the edge (11). The probe pad (16) is formed over the insulating layer (58) on a side of the second pad (14) that is opposite to the edge (11), wherein the probe pad (16) is electrically connected to the first pad (12). The probe pad (16) may be formed over active circuitry of the substrate instead of over a peripheral area of the die (10), thus reducing the surface area of the die (10).
摘要:
A technique for alleviating the problems of defects caused by stress applied to bond pads (32) includes, prior to actually making an integrated circuit (10), adding dummy metal lines (74, 76) to interconnect layers (18, 22, 26) to increase the metal density of the interconnect layers. These problems are more likely when the interlayer dielectrics (16, 20, 24) between the interconnect layers are of a low-k material. A critical area or force area (64) around and under each bond pad defines an area in which a defect may occur due to a contact made to that bond pad. Any interconnect layer in such a critical area that has a metal density below a certain percentage can be the cause of a defect in the interconnect layers. Any interconnect layer that has a metal density below that percentage in the critical area has dummy metal lines added to it.