摘要:
A thin multichip module comprises: a foldable frame comprising two rigid, substantially planar members capable of being folded together about a selected fold axis to form a substantially closed structure; a flex circuit having a plurality of integrated circuit chips disposed thereon, the flex circuit bonded to at least one of the planar members over at least a portion of each of their respective surfaces; and, electrodes on the module configured to be accessible to an external socket after the frame is closed. A method for making a thin multichip module comprises the steps of: a. attaching integrated circuit chips to a flex circuit; b. bonding the flex circuit to a foldable frame comprising two rigid, substantially planar members capable of being folded together about a selected fold axis to form a substantially closed structure; and, c. folding the frame approximately 180° about the fold axis.
摘要:
The invention involves systems to channel the air available for cooling inside the chassis of the computing device to force the air into selected channels in the memory bank (i.e., between the modules rather than around the modules or some other path of least resistance). This tunneled cooling (or collimated cooling) is made possible by using a set of baffles (or apertures) placed upstream of and between the cooling air supply and the memory bank area to force air to go only through the rectangular space available between adjacent modules in the memory bank of the high speed computing machines (super computers or blade servers in these cases). In some instances, it may be desirable to include both a blower fan, for forcing cool air through the baffles and through the heat exchanger(s) aligned with openings in the baffles, and a suction fan to draw or pull air as it exits the rear of the blade server chassis. The invention includes a high performance heat exchanger to be thermally coupled to the memory chips and either placed between adjacent modules (in the memory bank) or integrated within a cross sectional area of the module that is in the cooling air path; whereby, the heat from a given module is transferred laterally to a heat sink that, in turn, transfers the heat to the heat exchanger which in turn is placed in the path of cool air. However in this case, the cool air has no other alternative path but to pass through the high performance heat exchanger. The efficiency of heat exhaust is thereby maximized. Lateral heat conduction and removal is a preferred method for module cooling in order to minimize the total module height of vertically mounted Very Low Profile (VLP) memory modules. The invention is applicable to a wide range of modules; however, it is particularly suitable for a set of memory modules with unique packaging techniques that further enhance the heat exhaust.
摘要:
The bonding of components is facilitated by a conductive pattern which generates heat upon being irradiated with microwave or RF energy. The electrically conductive pattern is positioned on a first component surface and a curable resin having adhesive properties is applied thereto. A second component surface is placed in contacting relation with the resin and the conductive pattern is irradiated with microwave or RF energy to facilitate curing wherein the components are bonded together along the pattern. The conductive pattern can be utilized without adhesive resin wherein heat generated via the application of microwave or RF energy causes components to fuse together. The conductive pattern can be enveloped by polymeric material, wherein the polymeric material becomes the adhesive for bonding components when microwave or RF energy is applied.
摘要:
Rapid curing of polymer layers on semiconductor substrates is facilitated using variable frequency microwave energy. A semiconductor substrate having a polymer layer thereon is placed in a microwave furnace cavity, and then swept with a range of microwave frequencies. The range of frequencies includes a central frequency selected to rapidly heat the polymer layer. The range of frequencies is selected to generate a plurality of modes within the cavity. The sweep rate is selected so as to avoid damage to the semiconductor substrate and/or any components thereon. The microwave power may be adjusted during frequency sweeping to control the temperature of the polymer layer and the semiconductor substrate. Effluent produced during the curing of the polymer layer may be removed from the furnace cavity. The extent of cure of the polymer layer may be determined by detecting power reflection for each microwave frequency within the range to provide power reflection data, and then comparing the power reflection data with a predetermined set of power reflection data.
摘要:
A polymerizable composition includes at least one monomer, a photoinitiator capable of initiating polymerization of the monomer when exposed to light, and a phosphor capable of producing light when exposed to radiation (typically X-rays). The material is particularly suitable for bonding components at ambient temperature in situations where the bond joint is not accessible to an external light source. An associated method includes: placing a polymerizable adhesive composition, including a photoinitiator and energy converting material, such as a down-converting phosphor, in contact with at least two components to be bonded to form an assembly; and, irradiating the assembly with radiation at a first wavelength, capable of conversion (down-conversion by the phosphor) to a second wavelength capable of activating the photoinitiator, to prepare items such as inkjet cartridges, wafer-to-wafer assemblies, semiconductors, integrated circuits, and the like.
摘要:
A flexible circuit comprises a folded dielectric sheet having conductive patterns on its surface(s) to which microelectronic device(s) are attached. The dielectric sheet is folded 180° about a selected axis and a bond layer joins the two halves over a portion of their respective surface areas so that a remaining portion of their areas remain unbonded and a bifurcated structure is thereby formed. Electrical contacts are provided on the unbonded or bifurcated portions of the flexible sheets. The flex may be attached to a rigid frame and provided with protective heat spreading covers. The folded flex design is particularly suitable for reel-to-reel manufacturing.
摘要:
A polymerizable composition includes at least one monomer, a photoinitiator capable of initiating polymerization of the monomer when exposed to light, and a phosphor capable of producing light when exposed to radiation (typically X-rays). The material is particularly suitable for bonding components at ambient temperature in situations where the bond joint is not accessible to an external light source. An associated method includes: placing a polymerizable adhesive composition, including a photoinitiator and energy converting material, such as a down-converting phosphor, in contact with at least two components to be bonded to form an assembly; and, irradiating the assembly with radiation at a first wavelength, capable of conversion (down-conversion by the phosphor) to a second wavelength capable of activating the photoinitiator, to prepare items such as inkjet cartridges, wafer-to-wafer assemblies, semiconductors, integrated circuits, and the like.
摘要:
Methods and systems for producing a change in a medium. A first method and system (1) place in a vicinity of the medium at least one upconverter including a gas for plasma ignition, with the upconverter being configured, upon exposure to initiation energy, to generate light for emission into the medium, and (2) apply the initiation energy from an energy source including the first wavelength λ1 to the medium, wherein the emitted light directly or indirectly produces the change in the medium. A second method and system (1) place in a vicinity of the medium an agent receptive to microwave radiation or radiofrequency radiation, and (2) apply as an initiation energy the microwave radiation or radiofrequency radiation by which the agent directly or indirectly generates emitted light in the infrared, visible, or ultraviolet range to produce at least one of physical and biological changes in the medium.
摘要:
A multichip module comprises a multilayer substrate circuit having conductive patterns on its surface(s) to which microelectronic device(s) are attached. A part of the substrate is flexible and bifurcated. Two rigid members are attached lengthwise, one on either side of the substrate, and the free ends of the bifurcation are reflexed respectively about these members and bonded to them. Electrodes are located on the bifurcations so that they will be exposed outwardly and/or downwardly after reflexing. The module may further be provided with protective heat spreading covers. The electrodes and rigid members may be configured to engage a mating socket or they may be solderable to a printed circuit board.
摘要:
A flexible circuit comprises two flexible dielectric sheets having conductive patterns on their surface(s) to which microelectronic device(s) are attached. A bond layer joins the two sheets over a portion of their respective surface areas so that a remaining portion of their areas remain unbonded and a bifurcated structure is thereby formed. Electrical contacts are provided on the unbonded or bifurcated portions of the flexible sheets. The flex may be attached to a rigid frame and provided with protective heat spreading covers.