Organic light-emitting display device

An organic light-emitting display device comprising:

• a substrate;
• a gate electrode disposed on the substrate, the gate electrode comprising a metal oxide layer and a metal layer disposed between the metal oxide layer and the substrate;
• a pixel electrode disposed on the substrate so as to be insulated from the gate electrode, the pixel electrode comprising a metal oxide layer and a metal layer disposed between the metal oxide layer and the substrate;
• a gate insulating layer disposed on the substrate to cover the gate electrode;
• a semiconductor layer disposed on the gate insulating layer, the semiconductor layer comprising a channel region corresponding to the gate electrode, and first and second regions disposed outside the channel region;
• a first electrode connected to the first region of the semiconductor layer;
• a second electrode connected to the second region of the semiconductor layer and the pixel electrode;
• an ohmic contact layer disposed between the first region of the semiconductor layer and the first electrode and between the second region of the semiconductor layer and the second electrode;
• a pixel defining layer disposed on the substrate to cover the first electrode, the second electrode, the semiconductor layer, and the pixel electrode, the pixel defining layer comprising an opening through which the pixel electrode is partially exposed;
• an organic light-emitting layer disposed on a portion of the pixel electrode exposed through the opening;
• and
• an opposite electrode covering the organic light-emitting layer.