Abstract:
A system, method, and motherboard assembly are described for interconnecting and distributing signals and power between co-planar boards that function as a single motherboard. The motherboard assembly includes a multilayered first printed circuit board having opposed parallel first and second surfaces, each having at least one land grid array (LGA) disposed thereon. The assembly further includes at least one wiring layer (Y) designed to only electrically interconnect components on or within the first PCB, and at least one wiring layer (X) designed to only electrically connect the components on the first PCB to a multilayered second PCB. The multilayered second PCB has opposed parallel first and second surfaces, the first surface having at least one LGA disposed thereon. It further includes at least one wiring layer (V) designed to only electrically interconnect components on or within the second PCB, and at least one layer (X) designed to only electrically interconnect the components on the second PCB with the components on the first PCB. A first LGA interposer couples to the LGA disposed on the first surface of the first PCB, and electrically connects at least one component to the first PCB. A second LGA interposer is sandwiched between and couples to the LGA disposed on the second surface of the first PCB and to the LGA disposed on the first surface of the second PCB. It electrically connects the first PCB to components on the second PCB.
Abstract:
A manufacturing technique for constructing passive electronic components in vertical configurations is disclosed. Electrically passive components are constructed in a structure that is substantially perpendicular to target platform including a first plane to provide a larger electrode contact area and a smaller physical dimension. Passive components structured to be substantially perpendicular to a plane associated with a target platform can be directly connected to pad contacts of an integrated circuit or substrate or can be embedded in a package to reduce the area overhead of a passive component while improving the effectiveness of the passive components in their applications.
Abstract:
An aspect of the present invention inheres in an IC socket includes a plate-like socket base body which includes through hole forming portions having a plurality of contact housing holes formed so as to penetrate the plate-like socket base in a front-to-back direction, and having through holes formed around the respective contact housing holes so as to penetrate the plate-like socket base in the front-to-back direction, and a plated layer formed continuously on an inner wall of the through hole, on the front and back surfaces of the through hole forming portion, and on a surface of the contact piece.
Abstract:
An apparatus and method of making a package substrate with metal bumps is presented. The package substrate comprises a substrate base and a plurality of metal bumps which are formed on the substrate base. A microelectronic die may thereafter be attached to the package substrate. Also presented is a method for attaching the package substrate to a printed circuit board (PCB).
Abstract:
A method for low temperature bumping is disclosed. A resin capable of being cross-linked by free-radical or cationic polymerization at low temperature is provided. Electrically conductive particles are then added to the resin to form a mixture. The mixture is then activated by heat or exposure to light to polymerize the mixture. In an alternative embodiment, a vinyl ether resin is used, to which electrically conductive particles are added. The mixture is polymerized by exposure to light.
Abstract:
An integrated circuit (IC) package includes a substrate and an IC die mounted on a first side of the substrate. The IC package also includes a plurality of capacitors mounted on a second side of the substrate. The second side is opposite to the first side. The IC package further includes a plurality of conductive contact pads formed on the second side of the substrate and interspersed among the capacitors. Other embodiments are described and claimed.
Abstract:
Semiconductor device assemblies include elements such as electronic components and substrates secured together by a fastener that includes an elongated portion extending continuously through an aperture in two or more such elements. Computer systems include such semiconductor device assemblies. Fasteners for securing together such elements include an elongated portion, a first end piece, and a second end piece. Methods of securing together a plurality of semiconductor devices include inserting an elongated portion of a fastener through an aperture in a first semiconductor device and an aperture in at least one additional semiconductor device. Circuit boards include a plurality of apertures disposed in an array corresponding to an array of apertures in a semiconductor device assembly. Each aperture is sized and configured to receive a fastener for maintaining an assembled relationship between the semiconductor device assembly and the circuit board.
Abstract:
A standoff contact array is disposed between a mounting substrate of a flip-chip package and a board. The standoff contact array is formable by mating a low-profile solder bump on the mounting substrate with a low-profile solder paste on the board. Thereafter, the standoff contact array is formed by reflowing the low-profile solder paste on the board against the low-profile solder bump on the mounting substrate.
Abstract:
An elastic contact array circuitized substrate includes a circuitized substrate provided with circuit traces, and an array of three dimensional contact elements joined to the circuitized substrate and electrically coupled to the circuit traces. In one configuration, the array of three dimensional contacts are formed in a spring sheet material having anisotropic grains whose long direction is selected with respect to the longitudinal direction of elastic contact arms, in accordance with desired properties. In another configuration of the invention, the circuit traces are formed integrally within the spring sheet material.