Stretchable displays can withstand greater deformation than traditional displays,enabling their versatile integration into various electronic devices.However,when conventional stretchable displays are stretched,pixel ...Stretchable displays can withstand greater deformation than traditional displays,enabling their versatile integration into various electronic devices.However,when conventional stretchable displays are stretched,pixel size or spacing increases,reducing image quality.Various methods have been tried to maintain resolution,but the fill factor decreases when all pixels are active during stretching.Here,integrated stretchable OLEDs are presented with an integrated pixel density by overlapping quadrant pixels in voids.Overlapped pixels are vertically aligned to optically function as a single pixel in the original state.Upon stretching,these pixels are spatially separated and become individually visible,thereby increasing the fill factor.A reliable multilayered structure is designed through the patterned adhesive and the deposition of patterned electrodes.The PM-integrated stretchable display,consisting of a 3×2 array with one central pixel and four quadrant pixels per unit,successfully displayed various letters clearly in both the original and stretched states.展开更多
基金supported by the Technology Innovation Program(20017569,Development of substrate materials thatcan be stretched more than 50%for stretchable displays)funded by the Ministry of Trade,Industry&Energy(MOTIE,Korea)supported by the National R&D Program through the National Research Foundation of Korea(NRF)funded by Ministry of Science and ICT(2021M3C1C3097646)supported by BK21 FOUR(Connected AI Education&Research Program for Industry and Society Innovation,KAIST EE,No.4120200113769)。
文摘Stretchable displays can withstand greater deformation than traditional displays,enabling their versatile integration into various electronic devices.However,when conventional stretchable displays are stretched,pixel size or spacing increases,reducing image quality.Various methods have been tried to maintain resolution,but the fill factor decreases when all pixels are active during stretching.Here,integrated stretchable OLEDs are presented with an integrated pixel density by overlapping quadrant pixels in voids.Overlapped pixels are vertically aligned to optically function as a single pixel in the original state.Upon stretching,these pixels are spatially separated and become individually visible,thereby increasing the fill factor.A reliable multilayered structure is designed through the patterned adhesive and the deposition of patterned electrodes.The PM-integrated stretchable display,consisting of a 3×2 array with one central pixel and four quadrant pixels per unit,successfully displayed various letters clearly in both the original and stretched states.
