Shinko Electric Industries Co., Ltd.

Keigo Sato

Hiroshi Taneda

Noriyoshi Shimizu

A circuit board includes: an insulating layer having at least a part formed of an insulating resin; and an electrode pad embedded in the insulating layer and having a neck formed on an outer side surface, the neck being held in contact with the insulating resin of the insulating layer. The electrode pad includes: a first conductor layer having an end surface exposed from one surface of the insulating layer; and a second conductor layer formed on the first conductor layer and having a grain boundary density different from a grain boundary density of the first conductor layer. The neck is formed in a region of the outer side surface, the region corresponding to a boundary part between the first conductor layer and the second conductor layer.

Circuit board, laminated circuit board, and method of manufacturing circuit board

A semiconductor device includes an interconnect substrate, an interconnect trace disposed on an upper surface of the interconnect substrate, a semiconductor chip mounted on the upper surface of the interconnect substrate, an adhesive resin layer disposed between the upper surface of the interconnect substrate and a lower surface of the semiconductor chip to bond the interconnect substrate and the semiconductor chip, the adhesive resin layer including an opening at a bottom of which an upper surface of the interconnect trace is situated, a barrier layer covering a sidewall of the opening, and conductive paste disposed inside the opening, wherein an electrode terminal of the semiconductor chip situated at the lower surface thereof is disposed inside the opening, with the conductive paste filling a space between the barrier layer and the electrode terminal.

Semiconductor device with barrier layer

A wiring substrate includes a substrate body, a post formed on an upper surface of the substrate body, a thin film capacitor, and a first insulation layer covering the thin film capacitor and the post. The thin film capacitor includes a reference hole extending through the thin film capacitor in a thickness-wise direction. The post is inserted through the reference hole.

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Nagano, Japan

Keigo Sato