Kiran Shrestha, Researcher, Sunchon National University
R2R Gravure Printed NFC QR-Code Label to Prevent Counterfeits
Kiran Shrestha, Yushin Kim, Prince Wesley Vanaraj, Hyejin Park, Junfeng Sun and Gyoujin Cho*
Department of Printed Electronics, Sunchon National University, Suncheon, South Korea
Counterfeits in every product and part has always been a serious issue in the world because it endangers human life and global fare trade. However, up to present, there has been no general tool or system to prevent the production and use of counterfeits in all products due to cost and security issues. In this presentation, we are introducing a high throughput R2R gravure printing system to manufacture NFC QR-code labels1 with extremely low cost and high security. Since the printed NFC QR-code is selective and will only display QR-code by the proximity of a smartphone, it is impossible to easily reproduce like a simple QR-code. In the printed NFC QR-code label, the NFC function of the smartphone will wirelessly transfer the operation power to blink “On” and “Off” depending on the state of the QR-code in the label. Customers can check the history or record of the products and parts by simply tagging NFC QR-code label with their smartphones where the specific application (App) for the printed NFC QR-code is installed. The displayed QR-code can only be decoded through this specific App and can integrate the history and record of the products and parts so that the customers can easily distinguish the original product from the replica or counterfeits. To print NFC QR-code labels using R2R gravure on PET foils with the printing speed of 6 m/min, Ag nanoparticle based conducting ink, BaTiO3 nanoparticle based dielectric ink, single wall carbon nanotube-based p-type semiconducting ink and IGZO particle-based n-type semiconducting ink were utilized to print rectenna, CMOS like integrated 35 TFTs-based logic circuit, operated by 1.5 V DC. The printed rectenna and logic circuit will provide information to display QR-code on an electrochromic display, printed by PEDOT-PSSA based ink and polymer based solid electrolyte.
 Kang, H., Park, H., Park, Y., Jung, M., Kim, B., Wallace, G. and Cho, G. Fully Roll-to-Roll Gravure Printable Wireless (13.56 MHz) Sensor-Signage Tags for Smart Packaging. Sci. Rep. 4, 5387; DOI:10.1038/ srep05387 (2014)
Kiran Shrestha is a Researcher at Department of Printed Electronics Engineering in Sunchon National University, where Kiran develops and creates new innovative methods of comibining printed electronics with traditional Si electronics technology including development of mobile apps and computer interfaces for different sensors using during research purpose.
The printed electronics engineering is a new academic field at the emerging stage. Using a R2R (Roll-to-Roll) printing method on flexible paper, textile, and plastic film, it can manufacture various electronic devices at low cost. This fused technology will open the gate way to completely change the semiconductor and display industries environment. Possessing the leading technology in NT-PT printign fields, Sunchon National University (SCNU) has selected and been supporting printed electronics as a univeristy specialization field. As a fruit of this effot, printed electonics stated the WCU porgram in 2008 and extended the program to 2020 via BK21PLUS program.