Organic light-emitting display device

An organic light-emitting display device comprising:

• a thin film transistor (TFT) comprising an active layer, a gate electrode insulated from the active layer by a first insulation layer, the gate electrode comprising a lower gate electrode formed in a lower layer and an upper gate electrode formed in an upper layer, the TFT further comprising a source electrode and a drain electrode both insulated from the gate electrode by a second insulation layer and contacting the active layer;
• an organic light-emitting device electrically connected to the TFT and comprising a first electrode pattern comprising a pixel electrode and an upper layer portion formed in the upper layer, the pixel electrode formed in the lower layer where the lower gate electrode is formed, an intermediate layer comprising an emission layer, and an opposite electrode, wherein the pixel electrode, the intermediate layer, and the opposite electrode are sequentially stacked;
• and
• a pad electrode electrically coupled to the TFT or the organic light emitting device and comprising a first pad electrode formed in the lower layer where the pixel electrode is formed, a second pad electrode formed in the upper layer where the upper layer portion of the first electrode pattern is formed, and a third pad electrode comprising a transparent conductive oxide, wherein the first, second, and third pad electrodes are sequentially stacked;
• wherein edges of the first pad electrode and the second pad electrode are in contact with each other, and edges of the second pad electrode and the third pad electrode are in contact with each other;
• and
• wherein the third pad electrode is an uppermost layer of the pad electrode.