(a) Illustrations of active matrix. Upper left, whole structure. Upper right, structure of an OTFT cell on a rigid island with elastic conductor wiring. Lower, schematic structure of an OTFT cell on the rigid island, the light green box corresponds to the entire OTFT device. (b) Pictures of OTFT-active matrix. Left, 12 × 12 active matrix. Scale bar, 10 mm. Centre, magnified OTFT cells. Scale bar, 5 mm; Right, optical micrograph of the embedded OTFT. Scale bar, 500 μm. (c) Active matrix is relaxed (left) and stretched to about 60% (right). Scale bars, 20 mm.