Abstract:
Methods for manufacturing electrical circuits on laminates from low profile copper layers where one or more of the circuits have known and reproducible signal losses. The method for manufacturing printed circuit boards (40) comprising the steps of: providing a planar sheet (16) including a planar dielectric material layer having a first planar surface and a second planar surface, and first copper foil sheet (10) having a first planar surface and a second planar surface wherein the first copper foil planar surface is associated with the first dielectric material layer planar surface and wherein the first copper foil sheet first surface and second surface each include a bond enhancement layer (12, 14); and forming a circuit pattern (32, 34, 36) in the first planar copper sheet by removing unnecessary portions of the first planar copper sheet while leaving the circuit pattern copper in place to form an inner layer sheet including a circuit pattern wherein a bond enhancement layer is not applied to the circuit pattern after forming the circuit pattern.
Abstract:
A conductive component including: a substrate, a first layer comprising a plurality of island structures disposed on the substrate, wherein the island structures include graphene; and a second layer disposed on the first layer, wherein the second layer includes a plurality of conductive nanowires. Also, an electronic device including the conductive component.
Abstract:
A circuit board includes an electric circuit having a wiring section and a pad section in the surface of an insulating base substrate. The electric circuit is configured such that a conductor is embedded in a circuit recess formed in the surface of the insulating base substrate, and the surface roughness of the conductor is different in the wiring section and the pad section of the electric circuit. In this case, it is preferable that the surface roughness of the conductor in the pad section is greater than the surface roughness of the conductor in the wiring section.
Abstract:
A semiconductor device according to the present invention includes a ceramic substrate, a plurality of circuit patterns arranged on a surface of the ceramic substrate, a semiconductor element arranged on an upper surface of at least one circuit pattern, and a sealing resin for sealing the ceramic substrate, the plurality of circuit patterns, and the semiconductor element, in which an undercut part is formed in opposed side surfaces of the circuit patterns adjacent to one another, the undercut part is configured such that an end of an upper surface of the circuit pattern protrudes outside the circuit pattern more than an end of a lower surface of the circuit pattern on the ceramic substrate, and the undercut part is also filled with the sealing resin.
Abstract:
A fastening device is provided that includes a semiconductor body with an integrated circuit, and a dielectric passivation layer formed on the surface of the semiconductor body, and a trace formed underneath the passivation layer, and an oxide layer formed beneath the trace, and a connecting component that forms a frictional connection between a component formed above the passivation layer and the semiconductor body, wherein a formation passing through the passivation layer and the oxide layer and having a bottom surface is formed, and a conductive layer is formed on the bottom surface and the connecting component forms an electrical connection between the conductive layer and the component.
Abstract:
A reinforcing plate fixed to a connector main body is arranged on a bottom surface of the connector main body to come into surface contact with a surface of a substrate while a plurality of holes is provided on a surface, which contacts the substrate, of the reinforcing plate. When the reinforcing plate is soldered to the substrate, therefore, a solder wraps around not only a peripheral edge of the reinforcing plate but also an edge of each of the holes so that a soldering portion between the reinforcing plate and the substrate can be sufficiently ensured.
Abstract:
A heat radiator 1 includes an insulating substrate 3 whose first side serves as a heat-generating-element-mounting side, and a heat sink 5 fixed to a second side of the insulating substrate 3. A metal layer 7 is formed on the second side of the insulating substrate 3 opposite the heat-generating-element-mounting side. A stress relaxation member 4 formed of a high-thermal-conduction material intervenes between the metal layer 7 of the insulating substrate 3 and the heat sink 5 and includes a plate-like body 10 and a plurality of projections 11 formed at intervals on one side of the plate-like body 10. The end faces of the projections 11 of the stress relaxation member 4 are brazed to the metal layer 7, whereas the side of the plate-like body 10 on which the projections 11 are not formed is brazed to the heat sink 5. This heat radiator 1 is low in material cost and exhibits excellent heat radiation performance.
Abstract:
A method for manufacturing a multilayer printed wiring board includes preparing a first resin insulative material having a first conductive circuit on or in the first resin insulative material, forming a second resin insulative material on the first resin insulative material and the first conductive circuit, forming on a surface of the second resin insulative material a first concave portion to be filled with a conductive material for formation of a second conductive circuit, forming on the surface of the second resin insulative material a pattern having a second concave portion and post portions to be filled with the conductive material for formation of a plane conductor, and filling the conductive material in the first concave portion and the second concave portion such that the second conductive circuit and the plane conductor are formed.
Abstract:
A battery 10A with leads has a low-profile external casing acting 11 as one of a pair of electrode terminals and a closure plate 12 acting as the other of the electrode terminals. The closure plate 12 hermetically seals an opening of the external casing 11 via an insulating gasket. A pair of lead plates 13 and 14 are each welded to a different one of the electrode terminals 11 and 12. One of the lead plates 13 and 14 is secured to a circuit board X. The lead plate 14 that is secured to the circuit board has a net-like structure.
Abstract:
The present invention is an electrode 10 so provided as to be soldered to an electronic component 12 and, when the electronic component 12 is mounted on a substrate 13, soldered to the substrate 13. The electrode 10 includes a column-like electrode body 11 soldered to the electronic component 12 and to the substrate 13. The electrode has grooves as an air discharging device discharging the air 15a in air voids 15 generated within the solder 14 between joint surfaces 11a, 11b of the electrode body 11 and the electronic component 12 or the substrate 13 when the electrode body 11 is soldered to the electronic component 12 or the substrate 13.