Abstract:
The electronic device includes a terminal structure and a printed circuit board including the terminal structure. The terminal structure includes a solder-joint conductor region placed on a wiring conductor, an intermediate layer contacting with the conductor region, and a solder region contacting with the intermediate layer. The intermediate layer includes an intermetallic compound including tin and at least one of copper and nickel as principal components. When the indentation elastic modulus of the conductor region is E1 and the indentation elastic modulus of the intermediate layer is E2, the ratio of E1 to E2 is equal to or more than 0.8 and equal to or less than 1.5.
Abstract:
A noise suppression sheet comprises a pair of metal magnetic layers and a non-magnetic metal layer interposed between the pair of metal magnetic layers, and can achieve high magnetic shield characteristics on both surfaces.
Abstract:
A sheet material includes a resin layer containing a binder and polypyrrole particles, an electroless plating film provided on the side of one main surface of the resin layer and including first electroless plating films and a second electroless plating film, and a transparent base material provided on the side of the other main surface of the resin layer.
Abstract:
Disclosed herein is an electronic component module that includes, an electronic component, a mold resin that seals the electronic component, a conductive film that covers the mold resin, and a protective film that covers the conductive film. The protective film includes a protective layer and a low reflective layer, and the low reflective layer is free from contacting the conductive film.
Abstract:
Disclosed herein is a method for manufacturing a planar coil, the method including forming a base conductive layer on a base material, the base conductive layer including: a coil wiring portion having one end, other end, and first to third connecting positions, the second connecting position being closer to the other end compared with the first connecting position, the third connecting position being closer to the one end compared with the second connecting position; a power-feed wiring portion that connects the first connecting position with an external power source; and a connection wiring portion that short-circuits the second connecting position and the third connecting position; forming a wiring conductive layer on the base conductive layer by electrolytic plating by feeding power from the external power source; and removing the power-feed wiring portion and the connection wiring portion.
Abstract:
An electronic component module according to the present invention is provided with an electronic component, a sealing resin that seals the electronic component, and a metal film that covers a surface of the sealing resin. The sealing resin contains filler of oxide particles. Part of the filler in the sealing resin is exposed to the surface of the sealing resin. At least the part of the filler exposed to the surface of the sealing resin includes a crack that extends from an exposed surface of the filler into an inner portion. The crack is filled with at least one metal that constitutes the metal film.
Abstract:
A noise suppression sheet comprises a non-magnetic metal layer, a plurality of metal magnetic layers, and a plurality of insulating layers, and the metal magnetic layer and the insulating layer are alternately laminated on the non-magnetic metal layer. The noise suppression sheet can absorb and suppress noise generated from a circuit or the like in an electronic component by being mounted on the electronic component or the like. In the noise suppression sheet, noise is absorbed by each of the metal magnetic layers. Noise that is transmitted without being absorbed by the metal magnetic layer can be reflected by the non-magnetic metal layer and can be absorbed again by the metal magnetic layer, and hence the noise suppression sheet can suppress noise effectively.
Abstract:
A sheet material includes a resin layer containing a binder and catalyst particles, an electroless plating film on the side of one main surface of the resin layer and including first electroless plating films and a second electroless plating film, and a base material on the side of the other main surface of the resin layer.
Abstract:
A method of producing an electroconductive substrate including a base material, and an electroconductive pattern disposed on one main surface side of the base material includes: a step of forming a trench including a bottom surface to which a foundation layer is exposed, and a lateral surface which includes a surface of a trench formation layer, according to an imprint method; and a step of forming an electroconductive pattern layer by growing metal plating from the foundation layer which is exposed to the bottom surface of the trench.
Abstract:
Disclosed herein is a wiring component that includes a base material and a planar coil pattern formed on the base material. The planar coil pattern includes a coil wiring portion having one end, other end, and first to third connecting positions, the second connecting position being closer to the other end compared with the first connecting position, the third connecting position being closer to the one end compared with the second connecting position; a power-feed wiring portion connected to the first connecting position; and a connection wiring portion that short-circuits the second connecting position and the third connecting position. A cross-section structure of the planar coil pattern has a base resin layer formed on the base material, and a conductive layer formed on the base resin layer.