A pane having an electrical connection element, said pane having: a substrate; an electrically conductive structure in a region of the substrate; and a connection element in a region of the electrically conductive structure, the connection element containing at least a chromium-containing steel. The connection element has a region which is crimped about a connecting cable and connected to the electrically conductive structure by means of a solder.

In a semiconductor device (SP1) according to an embodiment, a solder resist film (first insulating layer, SR1) which is in contact with the base material layer, and a resin body (second insulating layer, 4) which is in contact with the solder resist film and the semiconductor chip, are laminated in between the base material layer (2CR) of a wiring substrate 2 and a semiconductor chip (3). In addition, a linear expansion coefficient of the solder resist film is equal to or larger than a linear expansion coefficient of the base material layer, and the linear expansion coefficient of the solder resist film is equal to or smaller than a linear expansion coefficient of the resin body. Also, the linear expansion coefficient of the base material layer is smaller than the linear expansion coefficient of the resin body. According to the above-described configuration, damage of the semiconductor device caused by a temperature cyclic load can be suppressed, and thereby reliability can be improved.

Provided is a wiring board including a substrate formed of an insulation material, and plural conductive patterns including plural electrodes arranged on a surface of the substrate along an end surface of the substrate, and plural wiring patterns connected to the plural electrodes, respectively, wherein the substrate includes a notch formed between electrode groups each of which includes a predetermined number of the electrodes.

A module having high reliability in terms of its connection to an external unit is provided. The module includes: a wiring substrate that mounts components and 3b thereon; a substrate electrode formed on one main surface of the wiring substrate; a columnar conductor connected at one end to the substrate electrode; an intermediate coating formed to cover an outer peripheral surface of the columnar conductor; and a first sealing resin layer provided to cover one main surface of the wiring substrate and the intermediate coating. The intermediate coating has a coefficient of linear expansion which is between that of the columnar conductor and that of the first sealing resin layer.

There is provided a metal-clad laminate in which the transmission loss of electrical signals can be reduced, a finer pitch of a circuit pattern is possible, a high precision and fine circuit can be formed, and the close adhesiveness of the metal film is excellent. The metal-clad laminate includes a coating film and a metal film laminated on a base material film in this order, wherein the metal film is a metal film formed by at least any formation method of plating, sputtering, and vapor deposition, and a surface roughness (Rz) of the coating film is 1 μm or less.

A circuit board is described which includes a layer composite with at least one dielectric layer which includes a planar extension in parallel with respect to an xy-plane which is spanned by an x-axis and a y-axis perpendicular thereto, and which includes a layer thickness along a z-axis which is perpendicular with respect to the x-axis and to the y-axis; and at least one metallic layer which is attached to the dielectric layer in a planar manner. The layer composite along the z-axis is free from a symmetry plane which is oriented in parallel with respect to the xy-plane, and the dielectric layer includes a dielectric material which has an elastic modulus E in a range between 1 and 20 GPa and along the x-axis and along the y-axis a coefficient of thermal expansion in a range between 0 and 17 ppm/K. A method of manufacturing such a circuit board is also described. Further, a method of manufacturing a circuit board structure comprising two asymmetric circuit boards and a method of manufacturing two processed asymmetric circuit boards from a larger circuit board structure is described.

A circuit board and a method of manufacturing a circuit board or two circuit boards are illustrated and described. The circuit board includes (a) a dielectric layer with a planar extension in parallel with respect to an xy-plane which is spanned by an x-axis and a y-axis perpendicular thereto and a layer thickness along a z-direction which is perpendicular with respect to the x-axis and to the y-axis; (b) a metallic layer which is attached to the dielectric layer in a planar manner; and (c) a component which is embedded in the dielectric layer and/or in a dielectric core-layer of the circuit board. The dielectric layer includes a dielectric material which has (i) an elastic modulus E in a range between 1 and 20 GPa and (ii) a coefficient of thermal expansion in a range between 0 and 17 ppm/K along the x-axis and along the y-axis.

An electronic device includes: a resin substrate that includes insulation resin on which wiring made of conductive material is provided; a heat-generation element that is a circuit element mounted on a first surface of the resin substrate, and is operated to generate heat; and a sealing resin that is provided on the first surface, and seals the heat-generation element. An opposite surface of the sealing resin opposite to a surface of the sealing resin in contact with the first surface is thermally connected to a heat radiation member and mounted on the heat radiation member. Each of the resin substrate and the sealing resin has a bend shape convex toward the opposite surface when each of surrounding temperatures is a normal temperature and has a linear expansion coefficient for maintaining a bend shape convex toward the opposite surface when each of the surrounding temperatures is a high temperature.

A package includes a conductive pad, with a plurality of openings penetrating through the conductive pad. A dielectric layer encircles the conductive pad. The dielectric layer has portions filling the plurality of openings. An Under-Bump Metallurgy (UBM) includes a via portion extending into the dielectric layer to contact the conductive pad. A solder region is overlying and contacting the UBM. An integrated passive device is bonded to the UBM through the solder region.

Provided is a resin composition, comprising epoxy resin, oxydianiline type benzoxazine resin, styrene-maleic anhydride resin and tetra-phenol resin. The resin composition may be baked for producing products such as prepregs, resin films, resin-coated coppers, laminates and printed circuit boards, which satisfy one or more or all of desirable properties such as higher dimensional stability after a reflow process, better thermal resistance after horizontal black oxide process, low dielectric constant, low dissipation factor, high thermal resistance and flame retardancy.