Integration of 4.5” active matrix organic light‐emitting display with organic transistors

Abstract

We developed a 4.5” 192x64 active matrix organic light‐emitting diode display on a glass using organic thin‐film transistor (OTFT) switching‐arrays with two transistors and a capacitor in each sub‐pixel. The OTFTs has bottom contact structure with a unique gate insulator and pentacene for the active layer. The width and length of the switching OTFT is 800 ? and 10? respectively and the driving OTFT has 1200? channel width with the same channel length. On/off ratio, mobility, on‐current of switching OTFT and on‐current of driving OTFT were 106,0.3∼0.5 cm2/V•sec, order of 10 μA and over 100 μA, respectively. AMOLEDs composed of the OTFT switching arrays and OLEDs made using vacuum deposition method were fabricated and driven to make moving images, successfully.