Integrated stretchable displays with integrated pixel density via overlapped pixels

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.