An organic light emitting diode (OLED) display device includes a substrate including a circular arc portion and a driving circuit connecting portion connected to the top of the circular arc portion. The circular arc portion is substantially circular around a center point. A display area is formed in the circular arc portion. The display area has a circular shape centered around the center point. A driving power supply line is formed in the circular arc portion and configured to provide a driving voltage for OLED pixels of the OLED display device. The driving power supply line formed to at least partially surround the display area. A number of power lines electrically connect the driving power supply line to the OLED pixels. A number of bridge lines are formed outside of the display area, where each bridge line connecting one of the power lines with at least one adjacent power line.