46‐3: Invited Paper: Skin‐like Organic Optoelectronic System for Real‐time Heart Rate Monitoring

Conventional wearable electronics do not have conformal contact with the skin, so they might produce unreliable detecting of physiological signals during continuous health monitoring. This leads to the skin‐like healthcare patch that ensure secure contact with skin and maximizes user's comfort during daily life. Here, we present skin‐like stretchable and conformable healthcare patch in which stretchable organic light‐emitting diode (OLED) matrix display and a stretchable organic photoplethysmography (PPG) sensor are implemented together. The patch, fabricated on elastomer substrate without pre‐strained fabricating process, maintain stable operation up to 30% strain by the use of the stress relief layers and deformable micro‐cracked interconnects that reduce the mechanical stress of the OLED matrix display and PPG sensor. The simple device structure and reliable fabrication process show promise for commercialization of healthcare patch as novel form‐factor of wearable electronics.