摘要:
An electronic circuit device has a substrate having a wiring pattern, an electronic component electrically connected to a terminal section of the wiring pattern by contacting a projection electrode with it, a cover that is disposed at a position facing the substrate and grapples the electronic component between it and the substrate, and a resin layer made of thermoplastic resin filled in a gap between the substrate and the cover. The gap includes a space in a connection region except an electric connection part between the projection electrode and the terminal section. The electronic component is adhered to the substrate and the substrate is adhered to the cover through the resin layer. Thus, the electronic circuit device having high connection reliability and high mass productivity, and a method and apparatus for manufacturing the electronic circuit device can be provided.
摘要:
Copper electrodes are formed on a circuit board to be bonded with leads of a TAB driving liquid crystal. A pre-deposit solder receiver having solder printed thereon is also provided on the circuit board in alignment with and prior to an electrode to be first bonded with a lead, to form a sufficient solder pool between plural electrodes and a bottom wall of a soldering iron. Solder/bonding is accordingly realized efficiently even from a starting electrode E1. Also, an excessive solder receiver may be provided in alignment with and after an electrode to be last bonded with a lead.
摘要:
A wiring board comprises a patterned wiring formed of electrically conductive resin composed primarily of silver and embedded into a substrate in a manner that a surface thereof is exposed above the substrate, and a covering conductor formed primarily of carbon covering the surface of the patterned wiring. The wiring board of this structure is superior in resistance to moisture absorption and water, prevents silver migration attributable to the moisture, and reduces contact resistance in the connection between a terminal portion of the wiring board and an external apparatus.
摘要:
Thinning and stacking are essential for circuit modules used for mobile devices of various kinds, smart cards, memory cards and the like. These demands make the manufacture of the circuit modules more complicated or less reliable due to delamination. A circuit module of a multilayer structure is provided which is formed by embedding semiconductor chips and passive components in a sheet made from a thermoplastic resin; folding a module sheet, which is formed of circuit blocks provided with wiring patterns thereon, at the boundaries of the circuit blocks so as to be stacked into layers; and thermal-bonding and integrating the module sheet by applying heat and pressure. As a result, a highly reliable circuit module can be manufactured in a simple manner.
摘要:
A multilayered circuit board and a method of forming the multilayered circuit board are provided. In a first circuit forming process, a first circuit is formed on an insulating board with a conductor; in a circuit embedding process, the first circuit is embedded in the insulating board so as to have a predetermined surface flatness and a predetermined parallelism; in a masking process, a pilot hole for a via hole is masked at a part of a surface of the circuit; in an insulating layer forming process P5p, an insulating material is applied as a layer to the surface except that portion thereof covered by the mask; in an insulating material layer flattening process, the surface of the insulating material layer is flattened so as to have the predetermined surface flatness and the predetermined parallelism; and in a pilot hole forming process, the mask is removed.
摘要:
A circuit board fabrication method including: forming first conductive interconnection 2 onto insulator substrate 1; applying resin film 41, which is to be interlevel insulator layer 42 for electrically insulating first conductive interconnection 2 and second conductive interconnection 6, onto insulator substrate 1; either making pillar-like member 3 stand on a prescribed position on first conductive interconnection 2 before applying resin film 41, or press fitting pillar-like member 3 into resin film 41 so as to reach either a surface vicinity of first conductive interconnection 2 or a portion of first conductive interconnection 2 after applying resin film 41; hardening resin film 41 to form interlevel insulator layer 42; pulling out pillar-like member 3 to form opening 5 in interlevel insulator layer 42; and forming second conductive interconnection 6 onto interlevel insulator layer 42 to include opening 5.
摘要:
An electronic component having connection terminals on one side thereof is bonded to a circuit board via an adhesive sheet having through-holes. The connection terminals on the electronic component are connected to electrode pads provided on the circuit board via a conductive adhesive in the through-holes. Thus, an electronic circuit device is formed. Using a polymeric resin film sheet for the circuit board and mounting an electronic component, e.g. an LSI, onto the circuit board can provide a small, light, thin, and inexpensive electronic circuit device.
摘要:
Thinning and stacking are essential for circuit modules used for mobile devices of various kinds, smart cards, memory cards and the like. These demands make the manufacture of the circuit modules more complicated or less reliable due to delamination. A circuit module of a multilayer structure is provided which is formed by embedding semiconductor chips and passive components in a sheet made from a thermoplastic resin; folding a module sheet, which is formed of circuit blocks provided with wiring patterns thereon, at the boundaries of the circuit blocks so as to be stacked into layers; and thermal-bonding and integrating the module sheet by applying heat and pressure. As a result, a highly reliable circuit module can be manufactured in a simple manner.
摘要:
An interconnection substrate include: interconnection layer 12 region where at least first conductor layer 16 and second conductor layer 18 are vertically stacked in that order on substrate 10, first conductor layer 16 and second conductor layer 18 containing conductive particles and a binder, wherein first conductor layer 16 and second conductor layer 18 stacked in the interconnection layer 12 region have conductive particles different in average particle size from each other. As a result, only intended region can have low resistance.
摘要:
A circuit board fabrication method comprising the steps of: forming first conductive interconnection 2 onto insulator substrate 1; applying resin film 41, which is to be interlevel insulator layer 42 for electrically insulating first conductive interconnection 2 and second conductive interconnection 6, onto insulator substrate 1; either making pillar-like member 3 stand on a prescribed position on first conductive interconnection 2 before applying resin film 41, or press fitting pillar-like member 3 into resin film 41 in such a manner as to reach either a surface vicinity of first conductive interconnection 2 or a portion of first conductive interconnection 2 after applying resin film 41; hardening resin film 41 to form interlevel insulator layer 42; pulling out pillar-like member 3 to form opening 5 in interlevel insulator layer 42; and (f) forming second conductive interconnection 6 onto interlevel insulator layer 42 in such a manner as to include opening 5.