a separated carbon nanotube - based active matrix organic light - emitting diode device including a substrate and transistors . each transistor includes an individual back gate patterned on the substrate and a gate dielectric layer disposed over the substrate . an active channel including a network of separated semiconducting nanotubes is disposed over a functionalized surface of the gate dielectric layer . a source contact and a drain contact are formed on two ends of the active channel , with the network of separated nanotubes between the source contact and the drain contact . an organic light - emitting diode display device is coupled to the drain of one of the transistors . a system includes a display control circuit having a substrate , with scan lines , data lines , and amoled devices formed on the substrate , with each amoled device coupled to one of the scan lines and one of the data lines .