Abstract:
A multi-wire board includes first and second substrates, and plural wires that connect the first and second substrates to each other, and expose to the outside, wherein the wires form a predetermined pattern in the first substrate.
Abstract:
Transmission line type components (1, 1null), which form coaxial lines having a very low characteristic impedance by coaxially installing a cylindrical outer conductor made of a conducive material being larger in diameter than an inner conductor so as to cover via a high dielectric insulating material the surface of an inner conductor made of a conductive material, are inserted in series between a power supply line (8) and a ground line (9) connected with a dc source on a printed circuit board and an I.SI (6) power supply port, whereby almost the entire high-frequency power supply current generated from the I.SI (6) is reflected off the I.SI (6) power supply port, and part of the high-frequency power supply current intruding into the components (1, 1null) is consumed and does not reach the external power supply line (8).
Abstract:
A management system for wiring and/or cabling is disclosed. The wire management system comprises a base socket, a cable guide assembly, and a base pivot. The cable guide assembly may include a base member and at least two guide members that may be removably mounted to the base socket. The base pivot may be received within the base member for removably mounting the cable guide assembly to the base socket. The at least two guide members of the cable guide assembly orientates the wiring and/or cabling in a generally vertical direction with respect to a heat emitting device so as to minimize the surface area of the wiring and/or cabling that is exposed to a heat emitting device, thereby minimizing heat buildup within an enclosure.
Abstract:
The invention is directed to a method of bonding a hermetically sealed electronics package to an electrode or a flexible circuit and the resulting electronics package, that is suitable for implantation in living tissue, such as for a retinal or cortical electrode array to enable restoration of sight to certain non-sighted individuals. The hermetically sealed electronics package is directly bonded to the flex circuit or electrode by electroplating a biocompatible material, such as platinum or gold, effectively forming a plated rivet-shaped connection, which bonds the flex circuit to the electronics package. The resulting electronic device is biocompatible and is suitable for long-term implantation in living tissue.
Abstract:
An inexpensive and high throughput process for manufacturing a printed circuit board (PCB) substrate includes first weaving a plurality of electrically non-conductive strands (e.g., fiberglass yarns) and at least one electrically conductive strand (e.g., a copper wire) to form a woven fabric with an upper surface and a lower surface. Next, the woven fabric is impregnated with a resin material to form an impregnated fabric, which is then cured to form a cured fabric. The upper and lower surfaces of the cured fabric are subsequently planed. The planing step segments the electrically conductive strand(s) and forms a PCB substrate that includes a planarized cured fabric with upper and lower planed surfaces and a plurality of electrically conductive strand segments extending from the upper planed surface to the lower planed surface. Since each of the electrically conductive strand segments extends from the upper planed surface to the lower planed surface, the segments function as electrically conductive vias of the PCB substrate. Also, a PCB substrate that includes a planarized woven fabric with a cured resin material impregnated therein. The planarized woven fabric includes planed upper and lower surfaces and a plurality of integrally formed electrically conductive strand segments (e.g., copper wire segments) extending from the upper planed surface to the lower planed surface. Since the electrically conductive strand segments were formed integrally with the remainder of the planarized woven fabric, PCB substrates are of high mechanical stability.
Abstract:
A method of forming metal posts. A fixture having an array of wire guide heads is provided. A conductive wire is threaded through a hole in each wire guide heads. The wire guide heads have a transient electric arcing mechanism for heating the conductive wire so that a teardrop shaped blob of material is formed at the tip of the conductive wire. The wire guide heads on the fixture are pulled towards a substrate, thereby forming a plurality of metal posts over the substrate. The technique of forming metal posts finds applications in the manufacturing of printed circuit board, package substrate (carrier) and silicon wafer.
Abstract:
An inexpensive and high throughput process for manufacturing a printed circuit board (PCB) substrate includes first weaving a plurality of electrically non-conductive strands (e.g., fiberglass yarns) and at least one electrically conductive strand (e.g., a copper wire) to form a woven fabric with an upper surface and a lower surface. Next, the woven fabric is impregnated with a resin material to form an impregnated fabric, which is then cured to form a cured fabric. The upper and lower surfaces of the cured fabric are subsequently planed. The planing step segments the electrically conductive strand(s) and forms a PCB substrate that includes a planarized cured fabric with upper and lower planed surfaces and a plurality of electrically conductive strand segments extending from the upper planed surface to the lower planed surface. Since each of the electrically conductive strand segments extends from the upper planed surface to the lower planed surface, the segments function as electrically conductive vias of the PCB substrate. Also, a PCB substrate that includes a planarized woven fabric with a cured resin material impregnated therein. The planarized woven fabric includes planed upper and lower surfaces and a plurality of integrally formed electrically conductive strand segments (e.g., copper wire segments) extending from the upper planed surface to the lower planed surface. Since the electrically conductive strand segments were formed integrally with the remainder of the planarized woven fabric, PCB substrates are of high mechanical stability.
Abstract:
A chip-on-board module has a multilayer interconnection board having die mount sections; dies mounted on respective die mount sections such that a single die is mounted on each die mount section or two or more dies are being stacked and mounted there; bonding pads provided on the multilayer and connected to single dies or uppermost dies; contact pads provided on the multilayer board and connected to corresponding bonding pads; jumper pads provided in proximity to the contact pads and connected to edge terminals of the multilayer board, circuit elements mounted on the multilayer interconnection board, or through holes formed so as to extend across layers of the multilayer board; and molding resin for molding the dies and the pads. The uppermost dies of the respective die mount sections where dies are stacked in two or more layers have passed an electric property test.
Abstract:
An electrically conductive adhesive agent includes at least an electrically insulative adhesive base material providing an adhesion; and at least an electrically conductive filler material mixed in the electrically insulative adhesive base material.
Abstract:
A PCB assembly which allows economical and reliable rework. The PCB assembly contains a soldermask and a trace with a portion of the trace exposed by a soldermask relief. When one needs to rework the PCB assembly, one bonds a rework wire, using conventional intermetalic bonding materials, to the portion of the trace exposed by the soldermask relief. There is no need to bond a rework wire to a component. Further, there is no need to scrape off the soldermask and possibly damage the traces and/or vias. The bonds are high reliability bonds, and the labor required to perform such bonds are minimal.