Abstract:
Substrate 10 has bumps 28, 30, 32, 34 and a substrate 20 has openings 36, 38, 40, 42 at positions in which bumps 28, 30, 32, 34 confront respectively. The substrates 10 and 22 are put together by fusing a sealing wall 26 formed on the substrate 22, to hermetically seal an electronic device lying on the substrate 10 therein. Gas that may be generated upon fusing of the sealing wall 26 can be effectively removed through the openings 36, 38, 40, 42 in the substrate 22.
Abstract:
A surface mountable power supply and a method of manufacturing the power supply. In one embodiment, the power supply includes: (1) a substrate having opposing upper and lower conductive layers (2) a lower electrical component having a first lead mounted on a first pad on the lower conductive layer and subject to forces capable of detaching the lower electrical component from the substrate when the power supply passes through a reflow soldering process, (3) an upper electrical component having a second lead mounted on a second pad on the upper conductive layer, (4) a solder located proximate the first lead, the lower electrical component of a sufficiently low weight such that a surface tension of a liquid state of the solder is sufficient to maintain the lower electrical component in contact with the lower conductive layer as the power supply passes through the reflow soldering process, (5) a planar magnetic device mounted on the substrate, the planar magnetic device having windings formed from a portion of conductive traces on the upper and lower conductive layers and a core disposed through apertures of the substrate and proximate the windings and (6) an inter-substrate conductive mount, coupled to the lower conductive layer, composed of a material having a melting point above a solder reflow temperature and adapted to mount the power supply to an adjacent substrate and provide a conductive path therebetween, the conductive mount including first and second compliant solder joints at interfaces of the substrate and the adjacent substrate, respectively.
Abstract:
The invention concerns a smart card, a connection arrangement and a method of producing a smart card, a semiconductor chip located on a module being inserted into a recess (24) in a card carrier so as to be connected electrically and mechanically. According to a first feature of the invention, during the milling-out of the recess, a contact bump section is exposed (22, 23) such that a reliable connection is provided between the module and induction or antenna coil (11). According to a second and third feature, the required electrical contacts are produced by soldering and the required mechanical contacts are produced by heat-sealing or fusion adhesives. Furthermore, the adhesive is provided with conductive particles and is compressed when the connection is made, such that the necessary electrical contact is brought about. According to a fourth feature, a special reinforcement frame comprising insulating sections is provided. The reinforcement frame is used to increase mechanical stability and absorb torsion forces and stresses which can occur when the card is used. At the same time, the reinforcement frame permits easy contact with strip conductors inside the card, e.g. for elements which form an antenna for contactless data-transmission.
Abstract:
A multi-layer circuit panel assembly is formed by laminating circuit panels (10) with interposers (12) incorporating flowable conductive material (48) at interconnect locations and a flowable dielectric material (30, 38) at other locations. Excess materials are captured in reservoirs (20) in the circuit panels. The flowable materials and reservoirs allow the interposers to compress and take up tolerances in the components. The stacked panels may have contacts (538) on their top surfaces, through conductors (527) extending between top and bottom and terminals (530) connected to the bottom end of each through conductor. The terminals and contacts are nonselectively connected to one another at each interface so that wherever a terminal and contact an adjacent panels are aligned with one another, these are connected to one another. This forms composite vertical conductors extending through a plurality of the panels. The selective treatment of the panel top and bottom surfaces provides selective interruptions in the vertical conductors.
Abstract:
An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising
(a) a main portion which comprises a main part of the first electrode, a main part of the second electrode, and a main part of the resistive element; and (b) a first connection leg which extends away from the main portion and which comprises a first leg part of the first electrode which is integral with the main part of the first electrode, and a first leg part of the resistive element which is integral with the main part of the resistive element. Such devices can be secured to circuit boards in a variety of ways, and to elastically deformed terminals.
Abstract:
A structure comprising a baseplate, a circuit board parallel and adjacent to the baseplate, and an electronic component is described. The circuit board has an edge with a scallop formed in the edge, and the scallop is plated with a conductive material. The electronic component includes a power-dissipating surface and a pad for making electrical connection. The electronic component is mounted with the power-dissipating surface in contact with the baseplate and the pad electrically connected to the conductive material.
Abstract:
A method for constructing a feedthrough via connection and a corresponding apparatus includes a metallic plate (101). A solderable contact area (103), is located on the plate (101). Next, an electrically insulating adhesive layer (105) is disposed onto the plate (101). This adhesive layer (105) has a feedthrough via (106) disposed therethrough aligned with the contact area (103). Then, a substrate (109) is disposed onto the adhesive layer (105). This flexible substrate (109) has a via (110) disposed therethrough with a solderable area (111) disposed thereon. A quantity of solder (113) is disposed onto the solderable area (111), and the assembly (100) is heated so that the solder (113) flows into the vias (106) and (110), thereby providing an electrical connection including the solderable area (111) of the via (110), the solder (113), and the contact area (103). During this reflow step, the structure of the adhesive layer (105) acts as a soldermask preventing the solder (113) from flowing outside of an area defined by the via (106).
Abstract:
A method of manufacturing a multilayered printed-wiring-board comprises attaching conductive members on conductive layers, superimposing a plurality of printed-wiring-boards, and electrically connecting the conductive layers with one another by the conductive members. A unitary insulating is provided between the conductive layers.
Abstract:
A method of manufacturing a multilayered printed-wiring-board comprises attaching conductive members on conductive layers, superimposing a plurality of printed-wiring-boards, and electrically connecting the conductive layers with one another by the conductive members. For keeping a constant distance between the conductive layers spacer pieces are provided in the conduction members.
Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen elektrisch leitender Verbindungen zwischen Leiterbahnen, die auf der Oberfläche einer als Träger dienenden starren Leiterplatte angeordnet sind und Leiterbahnen, die auf der Oberfläche einer als Träger dienenden biegsamen Folie angeordnet sind, wobei die Leiterbahnen im Bereich der herzustellenden Verbindungen Lötflächen aufweisen, mindestens eine von zwei gegenüberliegenden Lötflächen mit Lötplatte oder Lot beschichtet ist und die gegenüberliegenden Lötflächen unter Anwendung von Wärme und gegebenenfalls Druck miteinander verlötet werden.