Fujikura Ltd.

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Technologies to connect humans and their environment

Technologies to connect humans and their environment

Ultra-Fine Membrane Printed Circuit Boards


We are producing membrane printed circuits that are formed by screen-printing conductive ink on a polyester film substrate. Recently, there are growing needs for finer circuit patterns that exceed the limits of conventional screen-printing.
To cope with this trend, we have developed membrane printed circuit board technology that can create finer circuits using intaglio offset printing, in which ink in the hollows on the original plate is transferred to the blanket roll and printed on the substrate. As the plate is created by etching, it is possible to generate very high-definition patterns. We have succeeded in producing a 10 µm-pitch circuit at a prototype level. We are now preparing a volume production line to meet the demands for finer membrane printed circuits for capacitive touchpads of input devices and wiring boards of digital appliances.

 

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