2024 | Jiaxue Zhang, Qianying Lu, Ming Wu, Yuping Sun, Shaolei Wang, Xiaoliang Wang, Ming-Hui Lu, and Desheng Kong
This study presents the design and fabrication of intrinsically stretchable light-emitting drawing displays, which can show arbitrary hand-drawn features. The device uses a simplified architecture with coplanar interdigitated liquid metal electrodes, an electroluminescent layer, and a dielectric encapsulation layer. Ink patterns on the device are coupled with the interdigitated electrodes under alternating voltage stimulation, generating localized electric fields for bright emissions. Various inks are prepared for painting, stamping, and stencil printing, allowing for both long-lasting and transient luminous features. The devices are made entirely of compliant materials, enabling skin-like deformability and conformal attachment to the skin. The stretchable light-emitting drawing displays can withstand up to 200% tensile strain and repetitive stretching, making them suitable for body-integrated optoelectronic communication devices. The study also discusses the light-emitting mechanism, mechanical stretchability, and ink preparation methods, highlighting the potential applications in wearable electronics and soft robotics.This study presents the design and fabrication of intrinsically stretchable light-emitting drawing displays, which can show arbitrary hand-drawn features. The device uses a simplified architecture with coplanar interdigitated liquid metal electrodes, an electroluminescent layer, and a dielectric encapsulation layer. Ink patterns on the device are coupled with the interdigitated electrodes under alternating voltage stimulation, generating localized electric fields for bright emissions. Various inks are prepared for painting, stamping, and stencil printing, allowing for both long-lasting and transient luminous features. The devices are made entirely of compliant materials, enabling skin-like deformability and conformal attachment to the skin. The stretchable light-emitting drawing displays can withstand up to 200% tensile strain and repetitive stretching, making them suitable for body-integrated optoelectronic communication devices. The study also discusses the light-emitting mechanism, mechanical stretchability, and ink preparation methods, highlighting the potential applications in wearable electronics and soft robotics.