Electrical and mechanical characterizations of a large-area, printed organic transistor active matrix with floating-gate-based nonuniformity compensator

In this paper, we report the testing of the performance variations in a large-scale, printed, ultraflexible organic transistor active matrix on a 10-μm thin-film plastic substrate. A printed active matrix comprising printed floating gate organic transistors has been manufactured using high-definition screen-printing and inkjet-printing. Furthermore, by applying feedback control to the threshold voltages of the floating gate organic transistors, the circuit can be made to compensate for the device-to-device nonuniformity, which is less than 5%. The mechanical characteristics of the printed transistors are also evaluated. As a 10-μm thin film is used as the substrate, critical bending radii of less than 0.5 mm are achieved.