Nitto-denko Corporation

Kensuke Nishi

Yasunari Ooyabu

Jun Ishii

Yasuto Ishimaru

Hiroshi Yamazaki

Visit Thaveeprungsriporn

Akinori Itokawa

A wired circuit board has a metal supporting board, a metal foil formed on the metal supporting board, an insulating base layer formed on the metal supporting board to cover the metal foil, and a conductive pattern formed on the insulating base layer and a having a terminal portion. An opening is formed in the insulating base layer to expose the metal foil.

Wired circuit board and producing method thereof

A base material in which a base insulating layer and a metallic layer are laminated is prepared. The metallic layer is processed into a predetermined pattern to form conductor patterns including terminal parts. A hole is formed in a region under a predetermined terminal part where the base insulating layer is formed by directing a laser beam from below. A reinforcing board having a through hole is attached to the lower surface of the base insulating layer by a sheet-like adhesive having a through hole, with the holes being aligned with one another. An opening space formed by the holes is filled with metallic paste by screen printing. In this way, a printed circuit board is fabricated. An electronic component is mounted on this printed circuit board.

Printed circuit board and electronic component device

The width of a particular part (A) of a strip conductorof a wiring circuit board for mounting is reduced, wherein the strip conductor is exposed to form a stripe pattern, so that individual conductor can be connected to electrode E of an electronic component. The particular part (A) is one section in the longitudinal direction of a strip conductor having a long end, which part includes an area overlapping an electrode which is connected to a short end and transferred in parallel in the strip width direction up to the position on the strip conductor having a long end. Due to this constitution, a structure capable of suppressing a short circuit between an electrode and a wiring pattern can be afforded to a wiring circuit board, even to an electronic component having an electrode formed in high-density and in a zigzag arrangement pattern, which comprises an area overlapping an electrode.

Wiring circuit board

At least a particular part of a strip conductorof a wiring circuit board for mounting, wherein the strip conductor is exposed to form a stripe pattern, so that individual conductor can be connected to electrode E of an electronic component, is covered with a solder resist. The particular part is one section in the longitudinal direction of a strip conductor having a long end, which section includes an area overlapping an electrode which is connected to a short end and transferred in parallel in the strip width direction up to the position on the strip conductor having a long end. As a result, a structure capable of suppressing a short circuit between an electrode and a wiring pattern can be afforded to a wiring circuit board, even to an electronic component having an electrode formed in high-density and in a zigzag arrangement pattern, which comprises an area overlapping an electrode.

Growing community of inventors

Ibaraki, Japan

Kensuke Nishi