Design and Fabrication of Cylindrical Fiber Backplanes with 2T1C Pixel Circuits for Truly Wearable Woven Displays

This study proposes a comprehensive approach to the fabrication of fiber‐based thin‐film transistor (TFT) arrays for active matrix applications. The study utilizes a direct patterning method with metal masks on cylindrical fiber substrates, which facilitates the formation of low‐temperature TFTs with high mobility (≈10 cm 2 V −1 s −1 ) and stable electrical properties. Critical fiber‐related challenges, including thermal strain, surface roughness, and variations in thin‐film thickness and composition, are addressed. The innovative TFT backplane design, optimized for cylindrical fiber structures, is proposed as a solution to the unique challenges posed by curved, flexible substrates. This design demonstrates exceptional potential for high‐density integration, advanced functionality, and scalability in next‐generation electronic systems. Pulse driving tests confirm the stable and reliable current driving in a two transistor and one capacitor pixel circuit, demonstrating its ability to maintain consistent operation under dynamic conditions. The results validate fiber‐based TFTs as effective power sources for driving organic light‐emitting diodes, heralding next‐generation opportunities in truly wearable displays, smart textiles, and embedded electronics.