Patent ID: 8603845

Claim:
A method of fabricating an array substrate for an organic electroluminescent display device, comprising: preparing a substrate including a display area and a non-display area, wherein the display area includes a pixel region and the non-display area includes a power source area; forming a gate line and a data line with an inter insulating layer therebetween, the gate line and the data line crossing each other to define the pixel region; forming a thin film transistor in a driving area of the pixel region, the thin film transistor including a semiconductor layer of polycrystalline silicon, a gate insulating layer, a gate electrode, the inter insulating layer, a source electrode, and a drain electrode; forming auxiliary lines of a same material and on a same layer as the data line in the power source area; forming a passivation layer on the thin film transistor and of organic insulating material, wherein the passivation layer has a drain contact hole exposing the drain electrode and an auxiliary line contact hole exposing one of the auxiliary lines in the power source area, wherein the passivation layer covers ends and/or sides of the one of the auxiliary lines; and forming a first electrode and a line connection pattern on the passivation layer in the pixel region and in the power source area, respectively, wherein the first electrode contacts the drain electrode and the line connection pattern contacts the one of the auxiliary lines.