Flexible electronics demand multifunctional human-machine interfaces(HMIs)and organic user interfaces(OUIs).Existing deformable displays often rely on mechanical wires or hinges,limiting their thinness and flexibility...Flexible electronics demand multifunctional human-machine interfaces(HMIs)and organic user interfaces(OUIs).Existing deformable displays often rely on mechanical wires or hinges,limiting their thinness and flexibility.Incorporating sound features typically requires extra components,complicating design.In this study,we developed a lightweight,multifunctional display with a multishape bendable design and integrated sound capabilities.Using asymmetrical strain engineering on poly(vinylidene fluoride)(PVDF),we achieved bidirectional and complex deformations through electrical signals,eliminating the need for mechanical hinges.The PVDF actuator enables simultaneous sound emission and intricate shape transformations through rapid actuation and vibration.This design maintains the thinness and flexibility of organic light-emitting diode(OLED)technology.By controlling strain through PVDF polarization and applied electric field,we realized varied shape transformations and integrated these functions into a practical 6-inch OLED display.This approach enhances the functionality of flexible displays,expanding possibilities for future applications in flexible electronics.展开更多
基金supported by the Technology InnovationProgram(20023588)funded by the Ministry ofTrade,Industry,and Energy(MOTIE,Korea)the LG Display-POSTECH Incubation collaboration PJT and BK21 FOUR program,Educational Institute for Intelligent Information Integration of the National Research Foundation of Korea(NRF,Korea)。
文摘Flexible electronics demand multifunctional human-machine interfaces(HMIs)and organic user interfaces(OUIs).Existing deformable displays often rely on mechanical wires or hinges,limiting their thinness and flexibility.Incorporating sound features typically requires extra components,complicating design.In this study,we developed a lightweight,multifunctional display with a multishape bendable design and integrated sound capabilities.Using asymmetrical strain engineering on poly(vinylidene fluoride)(PVDF),we achieved bidirectional and complex deformations through electrical signals,eliminating the need for mechanical hinges.The PVDF actuator enables simultaneous sound emission and intricate shape transformations through rapid actuation and vibration.This design maintains the thinness and flexibility of organic light-emitting diode(OLED)technology.By controlling strain through PVDF polarization and applied electric field,we realized varied shape transformations and integrated these functions into a practical 6-inch OLED display.This approach enhances the functionality of flexible displays,expanding possibilities for future applications in flexible electronics.
