Patent ID: 8748897

Claim:
An array substrate for an organic electroluminescent display device, comprising: 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; a gate line and a data line with an inter insulating layer therebetween and crossing each other to define the pixel region; a thin film transistor in a driving area of the pixel region and 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; auxiliary lines of a same material and on a same layer as the data line in the power source area; a passivation layer disposed on the thin film transistor and formed 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 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.