Fujikura Kasei Stretchable Materials and Electrically Conductive Paste
Channel: Charbax
Date: 2023-12-13

Dave Dewey from Fujikura Kasei's electronics materials division at the id Tech X show in Tokyo, Japan. The focus is on electrically conductive paste innovations. The showcased moldable material is printed on polycarbonate film and thermoformed, presenting a rough idea for mobile electronics. An LED is mounted on polycarbonate with conductive film and an insulating coating.

Fujikura Kasei is actively working on stretchable materials for wearable electronics, displaying a model demonstrating the flexibility of their urethane-based stretchable conductive ink. Challenges include maintaining conductivity during stretching, addressing wear and tear, and ensuring material performance over repeated stretches and expansion percentages. The applications vary, with some developers seeking variable conductivity for sensing stretch positions, while others require consistent conductivity.

The discussion touches on nano silver inks for screen and offset printing, including conventional applications like membrane switches for keyboards, where Fujikura Kasei holds a significant market share in East Asia. They also present a lower viscosity material functioning as a shielded paint for plastic casings, primarily used in automotive and medical devices to prevent electromagnetic interference.

Another product highlighted is a heat dissipation coating designed to improve the performance of heat sinks, although details are limited as it is developed by a different division. The interview shifts to solar panels, with Fujikura Kasei, the former parent company, showcasing solar panels that can operate under low light intensity. The solar panels are not silicon-based, and the technology involves printed electronics. The technology is claimed to be in mass production, contributing to the commercial-level reduction of solar panel prices.

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