Date and Time:

Friday, October 25, 2024
9:00～10:20

Format:

Online（Zoom）

Program:

9:00～9:40

「Multilayer Flexible Displays Using ElectroluminescentInk」
Katarina Ilić (Revenue Director, Voltera, Inc.,)

This research investigates the advantages of additive prototyping for integrating electroluminescent (EL) circuitry into multi-layered electronic prototypes. By enabling rapid iteration and testing, this technology fosters innovation in industries like automotive, enhancing dashboard displays and ambient lighting for improved user experience. It also facilitates the development of flexible wearable devices by seamlessly incorporating EL elements into clothing and accessories.
The study evaluates various EL inks from ACI Materials and Saralon for multi-layer printing across four material layers: conductive silver ink, dielectric ink, blue light-emitting phosphor ink, and conducting polymer, tested on paper cardstock and PET. Using the Voltera NOVA precision materials dispensing system, the research identifies direct-ink write technology as optimal, despite challenges in achieving smooth surfaces between layers.
In addition, we will briefly cover other applications enabled by direct write dispensing with NOVA, including smart wearables, printed batteries, and bio-electrodes on advanced materials. Through iterative testing of material variations and printing parameters, the study successfully validated multi-layer printing with desired print quality and conductivity in a functioning prototype, highlighting the potential of screen printable ink in diverse printed electronics applications.

9:40～10:20

「High Tear-Resistant Silicone Rubber DuraQ and DuraQ Conductive Paste」
Tuyoshi Takenaka (Global Marketing Division, SUMITOMO BAKELITE CO., LTD.)

At Sumitomo Bakelite, we have developed DuraQ, a high tear-resistant silicone rubber that significantly improves tear resistance, addressing a known drawback of conventional silicone rubber. In addition, we have developed a conductive paste for wiring and electrodes based on DuraQ. In this presentation, we will introduce these materials and discuss their applications in flexible, stretchable circuits and bioelectrodes used for vital sensing.

Contact Information:

Yamagata University Soft Sensing Industry-Academia Collaboration Consortium Office
E-mail: soft-sensing@gp.yz.yamagata-u.ac.jp