Abstract:
A control and panel assembly using a thin dielectric carrier strip upon which a sheet of conductive material is adhesively attached. The conductive sheet is perforated to form an array of spaced parallel discrete conductors. The conductors are initially formed as interconnected by transverse webs which are frangibly removed after attachment to the carrier. Individual stand up connectors are then attached to each of the conductors to form a carrier sub-assembly and the terminals are inserted through slots in a dielectric deck plate. Individual user actuated control components are then plugged directly into the terminals with user actuated shafts or levers extending through deck plate and carrier strip.
Abstract:
Resilient contact structures are mounted directly to bond pads on semiconductor dies, prior to the dies being singulated (separated) from a semiconductor wafer. This enables the semiconductor dies to be exercised (e.g., tested and/or burned-in) by connecting to the semiconductor dies with a circuit board or the like having a plurality of terminals disposed on a surface thereof. Subsequently, the semiconductor dies may be singulated from the semiconductor wafer, whereupon the same resilient contact structures can be used to effect interconnections between the semiconductor dies and other electronic components (such as wiring substrates, semiconductor packages, etc.). Using the all-metallic composite interconnection elements of the present invention as the resilient contact structures, burn-in can be performed at temperatures of at least 150.degree. C., and can be completed in less than 60 minutes.
Abstract:
An electronic socket adapter includes an insulative carrier and an array of a plurality of surface mount contacts carried on the base. The pins may be floatably mounted on the carrier. A plurality of relatively large openings are formed in the carrier between adjacent contacts in the array. The openings provide improved heat flow in the region of the surface mount portions of the contacts and also provide for visualization of the surface mount portions of the contacts during and after soldering.
Abstract:
Assemblies and methods for interconnecting integrated circuits, particularly prepackaged ones, are disclosed. A multi-level electrical assembly--composed of a pin carrier, a set of pads, such as for receiving a surface-mounted integrated circuit, and a set of conductive pathways coupling the pads and the pins--can connect one or more integrated circuits to the socket or other attachment area of a circuit board. The pathways pass through a multi-layered interconnect board, which can be configured to permit any translation of pads to pins for different purposes, or to permit the coupling of additional circuit elements, such as a coprocessor or passive circuits, to the pathways. Inventive methods for forming the assemblies, and inventive systems in which the embodiment of the assembly can be used to increase circuit board density, are also disclosed.
Abstract:
A method and device for improved assembly to hole-free PCBs of high aspect ratio components or any other components that are not easily assembled to a hole-free PCB by standard surface-mount technology (SMT), such as pins, lugs, tabs, and test points. A metal or other electrically conductive member having one or more holes ("holed component") is mounted to the PCB, typically on a solder pad on the PCB. The said electrically conductive member, will have a low aspect ratio. The hole, which may be round, rectangular, or threaded, is sized to provide an interference fit with the male projection of the component which will be inserted within the hole. The holed component, like other low aspect ratio SMT components, may be delivered on tape and reel and conventional surface mount or pick and place equipment is used to surface mount the holed component on the hole-free PCB, following which the holed component is soldered in place. Then, the male projections of the components can be press-fitted into the holes of one or more of such soldered holed components in the same manner as such components were previously interference fitted into the holes of PCBs, using high speed inserter machines.
Abstract:
Attempts have been made to increase the number of pins of packages accompanying the trend toward fabricating integrated circuits highly densely and in smaller sizes. The present invention provides technology for improving reliability in fabricating packages of the surface-mounted type that have increased number of pins. That is, when the packages are mounted on the wiring substrate, the lead pins that receive load from the axial direction exhibit bending strength which is smaller than the junction strength of solder at the junction portions. To achieve this object, the lead pins are made of a material having large resiliency such as a fiber-reinforced material, a transformation pseudo elastic material, an ultra-high tension material, or a heat-resistant ultra-high tension material.
Abstract:
A circuit card assembly includes a first printed wiring board with a first receiving feature and a trace attached to the first printed wiring board. The three dimensional trace is formed by layer-by-layer additive manufacturing. The three dimensional trace includes first and second ends. The first end of the three dimensional trace engages with the first receiving feature of the first printed wiring board. The second end of the three dimensional trace is configured to engage with a second printed wiring board.
Abstract:
Multilayer structure, including a substrate film having a first and second opposite side, said substrate film including electrically insulating material, conductive traces on the first side of the substrate film for establishing a predetermined circuit design, a connector element laid upon the first side of, said substrate film, one side of the connector element facing the structure internals and the other, opposite side facing the environment on the second side of the substrate film including a number of electrically conductive contact members electrically connected to the circuit on the first side of the substrate film and configured to contact one or more electrical contact members of an external element responsive to mating the external element with the connector element, and a plastic layer molded onto the substrate film and the connector element so as to cover said one side of the connector element and the circuit.
Abstract:
A backplane and a communications device are disclosed. The backplane includes: at least one fixing plate, multiple connectors, and multiple flexible cables, where signal connection is implemented between corresponding connectors by means of the flexible cables, each of the connectors is provided with a housing and multiple signal pins installed on the housing, and the housing is installed on the fixing plate and is provided with a jack for insertion of a connector of a subcard in the communications device; one end of each signal pin is inserted into the jack, and the other end is connected to each flexible cable. When the communications device provided with the backplane transmits a high-rate signal, transmission quality and a transmission rate are relatively high.