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OKI heat resistant Stretchable FPC can be stretched repeatedly like rubber

Oki today announced the launch of its Stretchable Flexible Printed Circuits – Stretchable FPC. The newly launched OKI Stretchable FPC offers elasticity by replacing the polyimide widely used in existing FPCs with an elastic substrate. This elastic substrate can be stretched repeatedly, like rubber, and is heat-resistant, allowing components to be solder-mounted. Its circuit conductor incorporates the same copper wiring as existing FPCs but the wiring method is specially designed to allow it to work with the stretchable substrate.

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The use of copper wiring minimizes variations in conductor resistance due to FPC expansion or contraction, allowing use of the FPC as a sensor. Potential applications for the Stretchable FPC include use as a wearable sensor to help diagnose disease in the chest; the Stretchable FPC is wrapped around the chest to measure signal fluctuations in the copper wiring. By combining elasticity with the existing characteristics of FPCs, the Stretchable FPC can be used as elastic wiring material in wearable devices and will contribute to the ever-growing sophistication of electronic devices.

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