9‐2: Invited Paper: Stretchable Electronics for Wearable Microvolt Biosignal Monitoring Systems

Abstract

We report on recent progress in large, ultraflexible, and stretchable electronic sensors. Our work focuses on integration technologies for thin-film electronics comprising ultrasoft gel electrodes, thin-film amplifiers, Si-LSI platforms, thin-film batteries, and information engineering; integrating these technologies enables them to function as imperceptible active sensors.Here, we demonstrate the application of imperceptible sensors for a biosignal monitoring sheet system whose measurement accuracy is 0. µV. The most important technology for monitoring very small signals is flexible organic amplification circuits. Taking full advantage of flexible and stretchable electronic technology, we demonstrate wireless sheet electroencephalogram (EEG) monitoring systems for next-generation telemedicine. The ultraflexible and compliant thin-film amplifier can amplify biological signals by a factor of 3000, for monitoring of microvolt EEG signals.

A 50 dB high-gain operational amplifier integrated with metal-oxide TFTs

“…Researchers are in continuous interest to achieve the high performance of integrated circuits using metal-oxide TFTs, such as displays driver [3], RFID/NFC tags [4], ring oscillator and amplifier [5,6]. In addition, they also have a potential interesting application in the bio-potential monitoring systems [7,8]. Among * Author to whom any correspondence should be addressed.…”

A New High-Gain Operational Amplifier Using Transconductance-Enhancement Topology Integrated With Metal Oxide TFTs

“…In recent years, there has been increasing interest in applying oxide-based TFTs to integrated circuits (ICs), such as display drivers, converters or RFID/NFC tags [4]- [6]. In addition, they also have a potential interesting application in the bio-potential monitoring system [7], [8]. Among them, the operational amplifier is the most important module used to amplify signals in analog circuits.…”

38.3: The Novel Transparent Display Based on IGZO TFTs with High Transmittance and Low Reflectance

“…In the above technique, OLED has high color gamut, fast response time and high contras ratio which is self-luminous. Besides, OLED could be prepared as flexible and transparent display for its low temperature process [8].…”