Patent ID: 6897480

Claim:
An active matrix organic electroluminescence device, comprising: a substrate; a gate line on the substrate; a data line crossing the gate line; a power line parallel with the gate line; a power line on the substrate; a switching thin film transistor electrically connected to the gate line and the data line, the switching thin film transistor including a first gate electrode, a first active layer, and first source and drain electrodes; a driving thin film transistor electrically connected to the first drain electrode, the driving thin film transistor including a second gate electrode, a second active layer, and second source and drain electrodes; and a luminescent diode connected to the driving thin film transistor and the power line wherein the luminescent diode includes a first electrode connected to the second drain electrode of the driving thin film transistor; a second electrode connected to the power line; and an emissive layer disposed between the first and second electrodes, and wherein work function of the first electrode is smaller than work function of the second electrode.