Pioneering Design Flow and Techniques for R2R Printed Flexible Devices

Pioneering Design Flow and Techniques for R2R Printed Flexible Devices

-한국연구재단 ( 2020.07 ~ )

Printed devices, particularly flexible electronics, are accumulating awareness for their lower cost, faster and easier production, and lower temperature processing than Si-based semiconductors. Hence, this makes them ideal for cost-effective, large-scale applications like IoT, and wearable devices. Leveraging measurement data of the transistor, we are investigating Process Design Kits (PDK) development with cutting-edge machine-learning techniques for roll-to-roll (R2R) printed flexible devices, enabling accurate and fast SPICE simulations with neural network-based Verilog-A models. Despite the affordable and effortless fabrication of printed transistors, they suffer from inferior features like significant threshold voltage divergence, leading to diminished yields for large-scale manufacturing. To handle this, we are pioneering novel circuit-level solutions to match Si-based transistor yields, first showcased in the 4-bit Arithmetic Logic Unit (ALU). We are advancing our design flow and techniques to architect a comprehensive microprocessor.