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Conference Paper
Stretchable Inorganic LED-based Bioelectronic Platform for Multifunctional Biosignal Sensing and Therapy in Wearable Healthcare
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- Authors
- Yongjun Lee, Doeun Lee, Yunseong Choi, Jung-Hong Min, Ye Ji Shin, Sooji Nam, Yongmin Jeon
- Issue Date
- 2026-04
- Citation
- Materials Research Society (MRS) Meeting 2026 (Spring), pp.1-20
- Publisher
- Materials Research Society
- Language
- English
- Type
- Conference Paper
- Abstract
- The rapid rise in aging populations and chronic diseases has greatly increased the demand for digital healthcare systems capable of real-time bio signal monitoring and personalized therapy. Conventional technologies are primarily based on electrical, mechanical, or chemical sensors, while therapeutic functionalities are implemented through separate devices. This separation between sensors and stimulators often leads to temporal delays, spatial mismatches, and user discomfort. Therefore, an integrated electronic platform capable of simultaneous sensing and stimulation is urgently needed, and light-based technologies such as displays offer promising opportunities for such integration. In this study, we propose an inorganic light-emitting diode (iLED)-based electronic device that enables both bio signal detection and optical stimulation within a single platform. Compared with organic light-emitting diodes (OLEDs), iLEDs exhibit higher optical power, deeper skin penetration, and superior stability. Importantly, inorganic materials offer significant potential for achieving high-resolution sensing and localized photostimulation simultaneously. We demonstrated photoplethysmogram (PPG) biosignal sensing and phototherapeutic effects using an iLED light source, confirming the feasibility of this approach for biomedical applications. Both mini-LED and micro-LED structures successfully detected PPG signals under various conditions, demonstrating reliable sensing performance. Furthermore, optical stimulation experiments revealed enhanced cell proliferation, highlighting the therapeutic potential of the device. Further, by stacking Quantum Dots (QDs) on blue micro-LEDs, we achieved emission in the near-infrared region above 700 nm, enabling infrared-based sensing and therapy. These results indicate that micro-LED platforms boast superior suitability and performance in biomedical applications compared to conventional systems. Leveraging these capabilities, we implemented the device on a stretchable platform that accommodates mechanical deformation when attached on the skin. The proposed inorganic LED-based bio healthcare electronic device not only overcomes the limitations of existing technologies but also establishes a promising foundation for next-generation wearable biomedical platforms capable of real-time sensing and therapy integration.
- KSP Keywords
- Aging populations, Biomedical applications, Chemical sensors, Digital healthcare, Electronic Platform, Healthcare System, High resolution, Inorganic material, Light source, Micro light-emitting diodes(micro-LEDs), Near-infrared region