Abstract:
A multichip module comprises a flexible circuit having conductive patterns on its surface(s) to which microelectronic device(s) are attached. The flexible circuit is enclosed and supported by two rigid frames, which may further be provided with protective heat spreading covers. Contact pads on the rigid frame(s) may be configured to engage a mating socket or they may be solderable to a printed circuit board.
Abstract:
A flexible circuit comprises a folded dielectric sheet having conductive patterns on its surface(s) to which microelectronic device(s) are attached. The dielectric sheet is folded 180° about a selected axis and a bond layer joins the two halves over a portion of their respective surface areas so that a remaining portion of their areas remain unbonded and a bifurcated structure is thereby formed. Electrical contacts are provided on the unbonded or bifurcated portions of the flexible sheets. The flex may be attached to a rigid frame and provided with protective heat spreading covers. The folded flex design is particularly suitable for reel-to-reel manufacturing.
Abstract:
A flexible flat circuit cable includes first and second flexible circuit substrates extending in an extension direction. The first flexible circuit substrate has a first surface forming a first conductor layer and an insulation layer, and the second flexible circuit substrate has a first surface forming a second conductor layer and an insulation layer. A bonding material layer is applied at a predetermined section between the first flexible circuit substrate and the second flexible circuit substrate to bond the first and second flexible circuit substrates together in such a way to maintain a predetermined spacing distance between the first and second flexible circuit substrate and forming a gapped segment at sections where no bonding material is applied. The first and second flexible circuit substrates form a cluster section within the gapped segment, which has opposite ends respectively forming first and second connected sections each of which forms a connection plug or is provided with a connector.
Abstract:
A semiconductor device and method of fabricating the same. The semiconductor device includes at least one first contact pin on a first substrate and at least one second contact pin on a second substrate. The at least one first and second contact pins may be included in first and second contact pin arrays. The first and second contact pins of the first and second contact pin arrays may be aligned.
Abstract:
Card type information device includes wiring board having a wiring pattern with an electronic component mounted on a first face of wiring board and an antenna connecting electrode, antenna board having antenna pattern with antenna terminal electrode formed on a first face of antenna board, magnetic material placed between wiring board and antenna board confronting each other, flexible wiring board for coupling the antenna connecting electrode to antenna terminal electrode, and housing for accommodating wiring board, antenna board, magnetic material, and flexible wiring board. Wiring board and antenna board are made from one and the same insulating motherboard.
Abstract:
A multichip module comprises a multilayer substrate circuit having conductive patterns on its surface(s) to which microelectronic device(s) are attached. A part of the substrate is flexible and bifurcated. Two rigid members are attached lengthwise, one on either side of the substrate, and the free ends of the bifurcation are reflexed respectively about these members and bonded to them. Electrodes are located on the bifurcations so that they will be exposed outwardly and/or downwardly after reflexing. The module may further be provided with protective heat spreading covers. The electrodes and rigid members may be configured to engage a mating socket or they may be solderable to a printed circuit board.
Abstract:
An exemplary method of making an FPC includes forming a substrate comprising metal foil layers interleaved with intervening layers by: (a) laminating intervening layers with metal foil layers; (b) adhering a covering film to outermost surfaces of the substrate; (c) defining a hole in one side of the substrate through the covering film and at least two metal foil layers and the intervening layer between the at least two metal foil layers by etching or laser technology; and (d) plating a portion of an inner wall of the hole with conductive material to form a via to electrically connect the at least two metal foil layers.
Abstract:
The present invention provides a substrate for a flexible printed wiring board including an adhesive layer containing an epoxy resin composition, insulating layers respectively stacked on both sides of the adhesive layer and formed with a pair of films containing a nonthermoplastic polyimide resin, and conductor layers respectively disposed on the outer surfaces of the films. The total thickness of the insulating layers respectively stacked on both sides of the adhesive layer is 10 to 100 μm and 2 to 10 times the thickness of the adhesive layer. The mutual adhesion strength between the insulating layers through the intermediary of the adhesive layer is 7.0 N/cm or more.
Abstract:
A multi-layered flexible print circuit board comprising an insulating layer, a circuit layer formed on the front and back surfaces of the insulating layer and a hole connecting between the circuit layers via the insulating layer, wherein there is provided an electrically-conductive member having a metal layer formed thereon at least on the surface thereof which is press-fitted into the hole to electrically conduct the circuit layer.
Abstract:
A stack structure with semiconductor chips embedded in carriers comprises two carriers stacking together as a whole, at least two semiconductor chips having active surfaces with electrode pads and inactive surfaces corresponding thereto placed in the cavities of the carriers, at least one dielectric layer formed on the active surface of the semiconductor chip and the surface of the carrier, at least a conductive structure formed in the opening of the dielectric layer, and at least a circuit layer formed on the surface of the dielectric layer wherein the circuit layer is electrically connected to the electrode pad by the conductive structure, so as to form a three-dimensional module to increase the storage capacity dramatically and integrate the semiconductor chips in the carriers for efficiently reducing the size of the module, so that the combinations can be changed flexibly to form the required storage capacity according to the demands.