Abstract:
An assembly is provided which includes a first circuit panel having a top surface, a first dielectric element and first conductive traces disposed on the first dielectric element. In addition, a second circuit panel has a bottom surface, a second dielectric element and second conductive traces disposed on the second dielectric element, where at least a portion of the second circuit panel overlies at least a portion of the first circuit panel. The assembly further includes an interconnect circuit panel having a third dielectric element which has a front surface, a rear surface opposite the front surface, a top end extending between the front and rear surfaces, a bottom end extending between the front and rear surfaces, and a plurality of interconnect traces disposed on the dielectric element. The bottom end of the interconnect element abuts the top surface of the first circuit panel and the top end abuts the bottom surface of the second circuit panel, where at least some of the first conductive traces are in conductive communication with the second conductive traces through the interconnect traces.
Abstract:
An electronic device is manufactured using printed circuit board manufacturing processes. In particular, a laminar device comprises a first metal layer (12), a second metal layer (14), at least one layer of device material sandwiched between the first and second metal layers. A first layer of insulating material (40) substantially covers the first metal layer (12). A third metal layer (48) is provided on the first layer of insulating material (40). This third metal layer (48) is divided to provide a first terminal (90) and a second terminal (92). The first terminal (90) is electrically connected to the first metal layer (12) by a conductive interconnect (84) formed through said first layer of insulating material (40), and the second terminal (92) is electrically connected to said second metal layer (14) by a conductive path (68) comprising an insulated conductive channel which passes through and is insulated from said first metal layer (12) and said at least one layer of device material (16). The use of an insulated channel provides a cost effective method of manufacture and maximizes the effective area of device material used. A PTC component is built through this method.
Abstract:
The invention relates to a connector arrangement made from electrical/electronic component supports, whereby at least one connector contact is formed on a surface (7, 8) of an electrical/electronic component support (1). The at least one connector contact (4) is arranged on a front surface (14) of another electrical/electronic component support (2), such that a space-saving, simply assembled and cost-effectively producible connector arrangement between component supports is achieved.
Abstract:
The invention relates to a method of improving the manufacturing safety of weld joints (7) between a ceramic support (1) and a printed-circuit board (10). Said method consists of the deposition of a first metallization layer (5) resistant to alloy breakdown on the ceramic support (1), followed by the imprinting of a second metallization layer (6), which enhances wetting behaviour, on the first metallization layer (5). In this way the thickness of the overall metallization layer (5, 6) can be increased in the area of the edges (8) of a weld joint (7). The resulting raised solder ring in turn permits the fully automatic optical control of the weld joint (7).
Abstract:
Bare chips (201 to 203) are mounted on regions (101 to 103) of a printed wiring board (100), respectively. The chips are soldered to a motherboard at external electrode pads (105) on their borders. Lead pads (107) and the external electrode pads (105) are interconnected through a circuit pattern (109), through-holes (111) and interstitial via-holes (112). A circuit pattern (109) is disposed on a die bonding surface of the bare IC chips (201, 202) for which insulation is not necessary. A multi-chip module is thus completed.
Abstract:
Laminar electrical devices, in particular circuit protection devices, contain two laminar electrodes, with a PTC element between them, and a cross-conductor which passes through the thickness of the device and contacts one only of the two electrodes. This permits connection to both electrodes from the same side of the device. It also makes it possible to carry out the steps for preparing such devices on an assembly which corresponds to a number of individual devices, with division of the assembly as the final step.
Abstract:
A method of fabricating circuit packages which employ macro-components (10) mounted on supporting substrates (20). In order to maintain sufficient clearance between the component and substrate and achieve high reliability bonds, massive solder spheres (16) are applied to contact pads (14) on either the component or substrate. After contact pads of both carrier and substrate are brought into contact with the spheres, the bond is formed by reflowing the solder while maintaining a component to substrate clearance of at least 0.25mm due to surface tension of the solder spheres.
Abstract:
Die Erfindung betrifft eine Kontaktvorrichtung (2) mit einer Leiterplatte (13), die wenigstens einen elektrisch leitfähigen Anschlusskontakt (18) an einem Leiterplattenrand (17) aufweist, mit mindestens einem elektrisch leitfähigen Anschlusselement (1) und mit mindestens einem Federelement (9), wobei das Anschlusselement (1) seitlich gegen den Anschlusskontakt (18) zur elektrischen Berührungskontaktierung der Leiterplatte (13) unter elastischer Verformung des Federelements (9) drängbar ist. Es ist vorgesehen, dass das Anschlusselement (1) als Stanzteil (3) ausgebildet ist und einen das Federelement (9) bildenden Abschnitt (8) aufweist.