Abstract:
One embodiment of the invention is a system comprising a first component that generates heat, and a second component that is thermally connected to the first component, wherein the from the first component is transferred to a coolant through the second component, and the second component has a function in the computer system associated with an operation of the system other than transferring heat.
Abstract:
A multichip assembly includes semiconductor devices or semiconductor device components with outer connectors on peripheral edges thereof. The outer connectors are formed by creating via holes along boundary lines between adjacent, unsevered semiconductor devices, or semiconductor device components, then plating or filling the holes with conductive material. When adjacent semiconductor devices or semiconductor device components are severed from one another, the conductive material in each via between the semiconductor devices is bisected. The semiconductor devices and components of the multichip assembly may have different sizes, as well as arrays of outer connectors with differing diameters and pitches. Either or both ends of each outer connector may be electrically connected to another aligned outer connector or contact area of another semiconductor device or component. Assembly in this manner provides a low-profile stacked assembly.
Abstract:
A multidie semiconductor device (MDSCD) package includes a generally planar interposer comprising a substrate with a central receptacle, upper surface conductors, and outer connectors on the lower surface of the interposer. Conductive vias connect upper surface conductors with outer connectors. One or more semiconductor devices may be mounted in the receptacle and one or more other semiconductor devices mounted above and/or below the interposer and attached thereto. The package may be configured to have a footprint not significantly larger than the footprint of the largest device and/or a thickness not significantly greater than the combined thickness of included devices. Methods for assembling and encapsulating packages from multidie wafers and multi-interposer sheets or strips are disclosed. Methods for combining a plurality of packages into a single stacked package are disclosed. The methods may include use of somewhat laterally extending intermediate conductive elements, flip-chip style electrical connection, or both within the same package.
Abstract:
A component mounting structure including a metal base; a first substrate bonded to the upper surface of the metal base; a first wiring pattern formed on the upper surface of the first substrate; a second substrate horizontally mounted on the upper surface of the first substrate so that the lower surface of the second substrate is in contact with the upper surface of the first substrate; a second wiring pattern formed on the second substrate so as to be connected to the first wiring pattern; and a component mounted on the second substrate so as to be connected to the second wiring pattern.
Abstract:
An adapter may have a plurality of sockets secured to a separate card that is in turn secured to the backside of the adapter. As a result, memory modules may be separated from other processor-based components that are positioned on the component side of the adapter. By providing modular sockets for receiving the memory modules, the user may have the option to select the memory that is incorporated on the adapter.
Abstract:
The present invention features an ultra high density, high frequency, three-dimensional electronic circuit package suitable for constructing high capacity, high speed computer memory cards and the like. A demountable contact system allows easy test and/or burn-in. A memory card has a number of electrical receptacles adapted to receive a daughter card. The daughter card has memory devices attached to it and a corresponding number of electrical connectors placed along at least one edge, adapted to detachably mate with the electrical receptacles of the memory card. The demountable connectors allow easy rework of the package before optional, permanent solder attach. Bare dies or thin packages are mounted onto daughter cards, which in turn are mounted onto either a motherboard or memory card using pin/hole technology. The daughter cards may be equipped with structures such as ground planes, etc. to minimize electrical noise, control and match impedances and signal path lengths, and maintain signal synchronization (i.e., controlling skew). The inventive memory daughter cards may also contain thermal management structures contacting the chips, which conduct heat away from the chips. Such structures may be constructed by interleaving heat-spreading fins between the individual chip components and/or daughter boards.
Abstract:
Each of junctions formed between a semiconductor device and a substrate comprises metal balls of Cu, or other materials and compounds of Sn and the metal balls, and the metal balls are bonded together by the compounds.
Abstract:
A semiconductor module can be produced that is capable of achieving higher density of the semiconductor module itself as well as of being disposed in an area-efficient manner to another electronic component such as a mother substrate and the like. The semiconductor module includes a mounting substrate having on the underside a solder ball for connecting to the interconnection of a mother substrate and a plurality of semiconductor packages mounted in multiple layers on the surface side of the mounting substrate and connected to electrodes provided on the mounting substrate.
Abstract:
A semiconductor package in which a memory module (a SIMM or DIMM, for example) is mounted edgewise on a ceramic substrate. In another embodiment, a semiconductor package in which a chip scale package is mounted edgewise on a ceramic substrate.
Abstract:
An optoelectronic transmitter is provided including a semiconductor laser as the active optical transmitting element. The transmitter includes first and second printed circuit boards, with the first printed circuit board having mounted thereon electronic components and circuitry for driving the optoelectronic transmitter. A transmitting optical sub-assembly (TOSA) is mounted to the second printed circuit board. The second printed circuit board has an array of solder pads disposed on the back surface thereof, and the first printed circuit board has a corresponding array of solder pads disposed along an outer edge of the board. Spacing of the solder pads is such that when the first printed circuit board is placed in perpendicular abutment against the outer edge of the first printed circuit board, the solder pads formed on the first printed circuit board are aligned adjacent to the solder pads disposed on the back of the second printed circuit board. Solder joints are then formed in the angular space between the solder pads disposed on the first and second printed circuit boards, bonding the boards together while simultaneously providing electrical connections between the various components mounted on the individual printed circuit boards. An improved control circuit for driving the semiconductor laser transmitter facilitates this arrangement. The improved control circuit provides both automatic power control and laser slope compensation in order to normalize the output characteristics of individual transceivers. An alternate embodiment further includes a laser fault latching circuit for disabling the laser transmitter, and providing laser fault indication.