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 0.9GHz data transmission are demonstrated with 2.02mm2 area at 15.5μW (<1% duty cycle).
Highly-Integrated Light-Sensing System with RF Harvesting and Transmission in Commercial N-Type IGZO Flexible Technology
Privitera M.;Naveed M. Z.;Ballo A.;Giustolisi G.;Grasso A. D.;Alioto M.
2026-01-01
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 0.9GHz data transmission are demonstrated with 2.02mm2 area at 15.5μW (<1% duty cycle).File in questo prodotto:
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