Display substrate and method of fabricating the same

A display substrate, comprising:

• a common electrode disposed on a substrate;
• an insulating layer disposed on the common electrode;
• a gate electrode disposed on the insulating layer;
• a common electrode contact part and a direct contact part disposed on the insulating layer and spaced apart from the gate electrode;
• a gate insulating layer disposed on the substrate;
• a semiconductor layer disposed on the gate insulating layer;
• a pixel part spaced apart from the semiconductor layer;
• source and drain electrodes disposed on the gate insulating layer and the semiconductor layer, the source and drain electrodes comprising a first lower barrier and a first metal layer disposed on the first lower barrier;
• a first conductive layer coupled with a side of the common electrode contact part and an upper surface of the common electrode, the first conductive layer comprising a second lower barrier and a second metal layer disposed on the second lower barrier;
• a second conductive layer coupled with and disposed on the direct contact part, the second conducive layer comprising a third lower barrier and a third metal layer disposed on the third lower barrier;
• and
• a passivation layer formed on the source and drain electrodes, the first conductive layer, and the second conductive layer,
• wherein the second lower barrier and the third lower barrier comprise a same material as the first lower barrier of the source and drain electrodes,
• wherein the second metal layer and the third metal layer comprise a same material as the first metal layer of the source and drain electrodes,
• wherein the pixel part comprises the same material as the first lower barrier of the drain electrode and extends from the drain electrode;
• and
• wherein the second lower barrier makes contact with the common electrode contact part and the third lower barrier makes contact with the direct contact part.