An organic light emitting display (OLED) device is disclosed. The OLED device includes a substrate configured to include a sub-pixel defined into an emission region and a driving region. A first bank pattern configured to define the emission region of the sub-pixel is formed on the substrate. A second bank pattern configured to include an opening, which exposes the emission region and a part of the driving region, is formed on a part of an upper surface of the first bank pattern. An organic emission layer is formed in the opening. As such, the occupied area of the organic emission layer becomes wider. Therefore, the thickness deviation of the organic emission layer is prevented or minimized.