Abstract: A cooling device including a thermally conductive body with a first mating surface, a first solder wettable material disposed in a pattern at a portion of the first mating surface, and a reflowable solder material disposed at the first mating surface. A portion of the solder material is configured to be capable of contacting an adjacently disposed second mating surface, and when melted, to form a single flow front through a bond line gap between the first mating surface of the cooling device and the second mating surface of, for example, a thermal component. A mating surface of the cooling device is positioned adjacent to a mating surface of a thermal component and the solder material is heated at least to its melting point.

Abstract: A method of forming a microelectronic package, and an arrangement to attach a solder preform onto a microelectronic die in order to form the package. The method comprises: providing a reinforced solder preform including a solder preform and a backing layer attached to a backside of the solder preform; placing the reinforced solder preform on a surface of a first microelectronic component adapted to be soldered; attaching the solder preform to the surface of the first microelectronic component after placing the reinforced solder preform; removing the backing layer from the solder preform after placing the reinforced solder preform; placing a second microelectronic component to be soldered onto the solder preform after removing the backing layer; and soldering the second microelectronic component to the first microelectronic component to form the package.

Abstract: Some embodiments of the invention include a coated thermal interface to bond a die with a heat spreader. The coated thermal interface may be used to bond the die with the heat spreader without flux. Other embodiments are described and claimed.

Abstract: An electronic assembly includes a substrate, a device attached to the substrate, and a thermally conductive heat spreader covering the device and at least a portion of the substrate. A metal substantially fills the space between the device and the thermally conductive heat spreader. A method includes attaching at least one die to a substrate, placing a thermally conductive heat spreader over the die, and injecting a molten metal material into the space between the thermally conductive heat spreader and the die.

Abstract: A system may include an integrated heat spreader that includes a portion of solder material and a thermal conductor, wherein a voidless interface exists between the solder material and a first side of the thermal conductor.

Abstract: A device and method for designing and manufacturing an integrated heat spreader so that the integrated heat spreader will have a flat surface on which to mount a heat sink after being assembled into a package and exposed to the heat of a die. This device and method for designing and manufacturing an integrated heat spreader would generate a heat spreader that would be built compensate for deformations resulting from (1) physical manipulation during assembly (2) thermal gradients during operation and (3) differing rates of expansion and contraction of the package materials coupled with multiple package assembly steps at elevated temperatures so that one surface of the integrated heat spreader would have a flat shape.

Abstract: An apparatus and system, as well as fabrication methods therefor, may include a die having a surface and a primary material comprising tin, pure tin, or substantially pure tin coupled to the surface. A heat dissipating element may be coupled to the primary material.

Abstract: Devices and systems including a heat spreader with possibly controlled thermal expansion. For example, an integral heat spreader may include an insert formed of a high thermal conductivity material with a first coefficient of thermal expansion, and a ring formed of a stiff material with a second coefficient of thermal expansion, wherein the second coefficient of thermal expansion is smaller or significantly smaller than the first coefficient of thermal expansion. An integral heat spreader may optionally include, for example, a plating, a coating, or a patch, and may be included, for example, in a semiconductor device.

Abstract: A method for forming a high thermal conductivity heat sink to IC package interface is disclosed. The method uses reactive getter materials added to a two phase solder system having a phase change temperature that is about the normal operating temperature range of the IC, to bind absorbed and dissolved oxygen in the two phase solder interface material at or near the air to solder surface. Over time this chemical binding action results in an oxide layer at the air to solder surface that slows the rate of oxygen absorption into the solder interface material, and thus reduces the harmful oxidation of the solder to IC package interface and the solder to heat sink interface.

Abstract: According to one aspect of the invention, a contact formation and an electronic assembly incorporating the contact formation are provided. The contact formation may include a low temperature solder material and a plurality of dopant material particles within the solder material. The dopant material may include at least one of an insoluble metal, an intermetallic compound, and an oxide. The low temperature solder material may have a first liquidus temperature, and the contact formation may have a second liquidus temperature. The second liquidus temperature may be approximately the same as the first liquidus temperature.

Abstract: A composition includes a solder paste matrix and a solder mixture including a tin-based solder alloy. The composition also includes a discrete dispersion of a metal. The tin-based alloy includes a melting first temperature and the metal includes a melting second temperature. The melting second temperature is greater than the melting first temperature. The discrete dispersion is in a particle range of a majority passing minus 520-mesh. A process includes blending the solder mixture and the metal under non-alloying conditions to achieve the discrete dispersion of the metal. A process includes reflowing the composition such that the composition when solidified, has a melting point that is higher than the solder mixture in the composition.

Abstract: Embodiments include electronic packages and methods for forming electronic packages. One method includes providing a die and a thermal interface material on the die. A metal body is adapted to fit over the die. A wetting layer of a material comprising indium is formed on the metal body. The thermal interface material on the die is brought into contact with the wetting layer of material comprising indium. The thermal interface material is heated to form a bond between the thermal interface material and the wetting layer so that the thermal interface material is coupled to the metal body, and to form a bond between the thermal interface material and the die so that the thermal interface material is coupled to the die.

Abstract: An electronic assembly includes a substrate, a device attached to the substrate, and a thermally conductive heat spreader covering the device and at least a portion of the substrate. A metal substantially fills the space between the device and the thermally conductive heat spreader. A method includes attaching at least one die to a substrate, placing a thermally conductive heat spreader over the die, and injecting a molten metal material into the space between the thermally conductive heat spreader and the die.

Abstract: A system includes a thermal interface material (TIM) to transfer heat from a die to a heat spreader. The system includes a heat transfer subsystem disposed on the backside surface of the die. In one embodiment, the heat transfer subsystem comprises a first heat transfer material and a second heat transfer material discretely disposed within the first heat transfer material. A method of bonding a die to a heat spreader uses a die-referenced process as opposed to a substrate-referenced process.

Abstract: A device and method for designing and manufacturing an integrated heat spreader so that the integrated heat spreader will have a flat surface on which to mount a heat sink after being assembled into a package and exposed to the heat of a die. This device and method for designing and manufacturing an integrated heat spreader would generate a heat spreader that would be built compensate for deformations resulting from (1) physical manipulation during assembly (2) thermal gradients during operation and (3) differing rates of expansion and contraction of the package materials coupled with multiple package assembly steps at elevated temperatures so that one surface of the integrated heat spreader would have a flat shape.

Abstract: A system may include placement of a first surface of a solder preform on a first surface of a heat dissipator, and rolling of a roller across a second surface of the solder preform. In some embodiments, the system further includes pressing the solder preform and the heat dissipator against each other.

Abstract: A system may include an integrated heat spreader that includes a portion of solder material and a thermal conductor, wherein a voidless interface exists between the solder material and a first side of the thermal conductor.

Abstract: Devices and systems including a heat spreader with possibly controlled thermal expansion. For example, an integral heat spreader may include an insert formed of a high thermal conductivity material with a first coefficient of thermal expansion, and a ring formed of a stiff material with a second coefficient of thermal expansion, wherein the second coefficient of thermal expansion is smaller or significantly smaller than the first coefficient of thermal expansion. An integral heat spreader may optionally include, for example, a plating, a coating, or a patch, and may be included, for example, in a semiconductor device.

Abstract: An apparatus and system, as well as fabrication methods therefor, may include a die having a surface and a primary material comprising tin, pure tin, or substantially pure tin coupled to the surface. A heat dissipating element may be coupled to the primary material.

Abstract: A process of making an integrated heat spreader is disclosed. The integrated heat spreader is stamped with a thermal interface material under conditions to form a diffusion bonding zone between the integrated heat spreader and the thermal interface material. The thermal interface material can have one of several cross-sectional profiles to facilitate reflow thereof against a die during a method of assembling a packaged microelectronic device. The thermal interface material can also have one of several footprints to further facilitate reflow thereof against the die.