An OLED display device includes a substrate, a driving thin film transistor (TFT) formed on the substrate, a passivation layer formed over the substrate and covering the driving TFT, an OLED display formed on the passivation layer, the OLED including a first electrode, an organic emitting layer and a second electrode, a base line formed on the passivation layer, a support pattern formed on the central portion of the base line, a first bank layer covering a boundary portion of each of the first electrode and the base line so as to expose a central portion of each of the first electrode and the base line, and a second bank layer formed on the support pattern. The organic emitting layer is formed on the first electrode, the first and second bank layers and the support pattern in a pixel region of the substrate, and is cut at a top edge portion of the support pattern to expose a portion of the base line, and the second electrode covers the organic emitting layer and is connected to the portion of the base line.