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Electronic Materials and Components

Electronic Materials and Components

High-tech ...in your palm

Waves of Microelectronics are sweeping the every accessible device and electronic equipment. Amid rapid technological innovation, the lead time from development to commercialization is becoming drastically shortened and high technology is put to use one after another as palm-sized products. Fujikura has a long history of developing a wide variety of wiring materials from their development and prototype production to mass-production. We intend to supply high-tech electronic components as system products that satisfy user needs.
This is our policy for electronic component development at Fujikura as a comprehensive wiring system creator.

Multilayer FPCs



With the recent sophistication of hand-held devices such as smartphones, there are growing needs for multilayer flexible printed circuits (FPCs) that have both reliability and implementability. Multilayer FPCs have three or more copper conductor layers. It is an advanced form of FPC that integrates different designs: a multilayer structure on which components are mounted and a single- or double-sided structure that serves as a connector or bending part.
The manufacturing process laminates single- and double-sided FPCs on which circuits are formed, prepares adhesion layers using bonding sheets, and creates a multilayer FPC by thermo-compression.
A single FPC can provide three-dimensional wiring that runs along the interior, small-footprint (space-saving) wiring, and wiring at folding parts within the limited space of a small electronic device such as a smartphone.
Recent designs use high-density wiring that contains impedance-control circuits, which cannot be implemented with double-sided boards due to space limitations. Multilayer FPCs find many applications in such areas.

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