Highly-Integrated Light-Sensing System with RF Harvesting and Transmission in Commercial N-Type IGZO Flexible Technology
Abstract
A sticker-like light sensing system is demonstrated in flexible N type-only IGZO TFT. It reuses RF signals for harvested battery charging and backscattered communications, and repurposes resistors as light sensors. Low-power operation is enabled by techniques for state-of-the-art efficiency in voltage regulation, signal amplification, data conversion and pseudo-dynamic logic. Indoor light sensing and 0.9 GHz data transmission are demonstrated with$2.02 \text{mm}^{2}$area at$15.5 \mu \mathrm{W}$($
Fields of Study & Subjects
Energy Harvesting in Wireless Networks
Thin-Film Transistor Technologies
Advanced Sensor and Energy Harvesting Materials
Publication details
- Journal / source
- Digest of technical papers/Digest of technical papers - IEEE International Solid-State Circuits Conference
- Pages
- 248–250
- Publication date
- 15 February 2026
- Language
- EN