Patent ID: 7932671

Claim:
An organic electroluminescent display (OELD) device, comprising: a first substrate; a plurality of gate lines and a plurality of data lines crossing each other to define a plurality of pixel regions; a power line parallel to and separated from the gate lines; switching and driving elements connected to each other in each of the plurality of pixel regions on the first substrate, wherein each of the switching and driving elements include a gate electrode on the substrate, a gate insulating layer on the gate electrode, a semiconductor layer on the gate insulating layer and source and drain electrodes separated from each other on the semiconductor layer, wherein the semiconductor layer includes an active layer, which is formed of intrinsic amorphous silicon and disposed on the gate insulating layer, and an ohmic contact layer which is formed of impurity-doped amorphous silicon and disposed on the active layer; a storage capacitor including first and second storage electrodes and a dielectric layer between the first and second storage electrodes, wherein the first and second storage electrodes extend from the power line and the switching element, respectively, and the dielectric layer includes a single layer of the gate insulating layer such that the first storage electrode contacts a bottom surface of the gate insulating layer and the second storage electrode contacts a top surface of the gate insulating layer; a first electrode on the first substrate and connected to one of the driving element; an oxidation layer on the first electrode; an injection layer on the oxidation layer and including a metallic material having a higher reactivity than a material of the first electrode; an organic luminescent layer on the injection layer; a second electrode of a transparent conductive material on the organic luminescent layer; and a second substrate attached to and facing the first substrate.