An organic light emitting display (OLED) device is disclosed. The OLED device may include a substrate comprising a display region and a peripheral region, the display region comprising a first transmission portion and at least one light emitting portion, the peripheral region comprising a second transmission portion and at least one electrode placement portion, a first electrode in the display region, an organic light emitting layer on the first electrode, a second electrode in the display region and the peripheral region, the second electrode opposite to the first electrode with respect to the organic light emitting layer, and a third electrode in the peripheral region. The first electrode may be patterned as an island shape to be separated per the light emitting portion. The third electrode may be patterned as an island shape to be separated per the electrode placement portion.