An electromagnetic wave shield film in which peeling off between a metal thin film and an adhesive layer is prevented and a printed wiring board employing the electromagnetic wave shield are provided. An electromagnetic wave shield film is formed by laminating at least a metal thin film and an adhesive layer in order, and the water vapor permeability of the electromagnetic wave shield film according to JISK7129 is 0.5 g/m.sup.2 per 24 hours or higher at a temperature of 80 degrees centigrade, a moisture of 95% RH, and a pressure difference of 1 atm.

An electromagnetic wave shield film in which peeling off between a metal thin film and an adhesive layer is prevented and a printed wiring board employing the electromagnetic wave shield are provided. An electromagnetic wave shield film is formed by laminating at least a metal thin film and an adhesive layer in order, and the water vapor permeability of the electromagnetic wave shield film according to JISK7129 is 0.5 g/m.sup.2 per 24 hours or higher at a temperature of 80 degrees centigrade, a moisture of 95% RH, and a pressure difference of 1 atm.

An electromagnetic wave shield film in which peeling off between a metal thin film and an adhesive layer is prevented and a printed wiring board employing the electromagnetic wave shield are provided. An electromagnetic wave shield film is formed by laminating at least a metal thin film and an adhesive layer in order, and the water vapor permeability of the electromagnetic wave shield film according to JISK7129 is 0.5 g/m.sup.2 per 24 hours or higher at a temperature of 80 degrees centigrade, a moisture of 95% RH, and a pressure difference of 1 atm.

A fusible via is disclosed. The fusible via includes an upper contact. The fusible via further includes a handle portion having a first end and a second end. The upper contact is disposed on the first end of the handle portion. The handle portion comprises an alloy and a blowing agent. The alloy melts above a predefined solder reflow temperature but below a thermal degradation temperature of the blowing agent. The fusible via further includes a lower contact disposed on the second end of the handle portion.

A wiring board includes an insulating layer, and a metal layer, formed on the insulating layer, and including a first pattern that includes a plurality of wirings extending parallel to each other, and a second pattern that includes a degassing hole. The insulating layer includes a groove exposed between the plurality of wirings, and a surface of the insulating layer inside the degassing hole is located above a bottom surface of the groove.

A multilayer substrate includes a stacked body including a plurality of insulating base material layers stacked on each other and a plurality of conductor patterns provided in contact with the plurality of insulating base material layers. The stacked body includes a first surface, and the plurality of conductor patterns include a plurality of mounting electrodes. The plurality of mounting electrodes include first openings. The first openings, in a plan view of a mounting surface, are provided over a mounting region and a non-mounting region of the mounting electrodes. The mounting region, when a mounted component is mounted, overlaps with the mounted component, and the non-mounting region does not overlap with the mounted component.

A honeycomb core includes a honeycomb substrate comprised of a number of sheets. A number of traces are printed onto the sheets of the honeycomb substrate. A number of integrated electronic devices are disposed within the honeycomb substrate. The integrated electronic devices are electrically coupled to the traces.

Encapsulated electronic modules having complex contact structures may be formed by encapsulating panels containing a substrate comprising pluralities of electronic modules delineated by cut lines and having conductive interconnects buried within terminal holes and other holes drilled in the panel within the boundaries of the cut lines. Slots may be cut in the panel along the cut lines. The interior of the holes, as well as surfaces within the slots and on the surfaces of the panel may be metallized, e.g. by a series of processes including plating. Terminals may be inserted into the terminal holes and connected to conductive features or plating within the holes. A conductive element may be provided on the substrate to connect to a terminal. Alternatively solder may be dispensed into the holes for surface mounting.

The present disclosure provides a circuit board, an electrical component and a display apparatus. The circuit board includes a wiring pad which is divided into a plurality of sub-pads by bubble discharge paths, the bubble discharge paths intersect at a first point which is a geometric center of the wiring pad. By configuring bubble discharge paths with a shape of a straight line and as being intersected at the geometric center point of the wiring pad, the circuit board can discharge gas bubbles, generated when the wiring pad is soldered to a wiring terminal of other circuit board, from the geometric center point of the wiring pad to the edge thereof via the bubble discharge paths. Thus gas bubbles can be eliminated or reduced between the wiring pad and the wiring terminal when soldering, connection between the wiring pad and the wiring terminal can be more secure.

An electromagnetic wave shield film in which peeling off between a metal thin film and an adhesive layer is prevented and a printed wiring board employing the electromagnetic wave shield are provided. An electromagnetic wave shield film is formed by laminating at least a metal thin film and an adhesive layer in order, and the water vapor permeability of the electromagnetic wave shield film according to JISK7129 is 0.5 g/m.sup.2 per 24 hours or higher at a temperature of 80 degrees centigrade, a moisture of 95% RH, and a pressure difference of 1 atm.