An organic light emitting diode "OLED" display device comprising: a substrate comprising a circular portion and a driving circuit connecting portion connected to the circular portion, wherein the circular portion is circular around a center point; a display area within the circular portion, the display area comprising a circular shape centered around the center point, the display area comprising a plurality of OLED pixels, each OLED pixel connected to one of a plurality of power lines; a driving circuit portion arranged to drive the plurality of OLED pixels using image data, a control signal and a driving voltage, the image data, the control signal and the driving voltage being supplied from the driving circuit portion through a driving pad portion, the driving pad portion being located in the driving circuit connecting portion; a driving power supply line comprising a first end and a second end, the first and second ends each being connected to an associated driving power pad of the driving pad portion, the driving power supply line being formed around the circular portion and configured to provide a driving voltage for the OLED pixels, the driving power supply line comprising a circular shape centered around the center point and formed around the display area; a plurality of scan lines and a plurality of data lines crossing the plurality of scan lines; and a plurality of power sharing lines extending away from the driving power supply line along a direction parallel to the plurality of scan lines, each of the power sharing lines connected to a different subset of the plurality of power lines, wherein the plurality of data lines extends along a first direction (+Y) oriented from the driving circuit portion toward the plurality of power sharing lines, and wherein the plurality of power lines extends along a second direction (-Y) oriented from the plurality of power sharing lines toward the driving circuit portion, wherein the power lines are parallel with the data lines so as not to intersect or cross any of the data lines. a substrate comprising a circular portion and a driving circuit connecting portion connected to the circular portion, wherein the circular portion is circular around a center point; a display area within the circular portion, the display area comprising a circular shape centered around the center point, the display area comprising a plurality of OLED pixels, each OLED pixel connected to one of a plurality of power lines; a driving circuit portion arranged to drive the plurality of OLED pixels using image data, a control signal and a driving voltage, the image data, the control signal and the driving voltage being supplied from the driving circuit portion through a driving pad portion, the driving pad portion being located in the driving circuit connecting portion; a driving power supply line comprising a first end and a second end, the first and second ends each being connected to an associated driving power pad of the driving pad portion, the driving power supply line being formed around the circular portion and configured to provide a driving voltage for the OLED pixels, the driving power supply line comprising a circular shape centered around the center point and formed around the display area; a plurality of scan lines and a plurality of data lines crossing the plurality of scan lines; and a plurality of power sharing lines extending away from the driving power supply line along a direction parallel to the plurality of scan lines, each of the power sharing lines connected to a different subset of the plurality of power lines, wherein the plurality of data lines extends along a first direction (+Y) oriented from the driving circuit portion toward the plurality of power sharing lines, and wherein the plurality of power lines extends along a second direction (-Y) oriented from the plurality of power sharing lines toward the driving circuit portion, wherein the power lines are parallel with the data lines so as not to intersect or cross any of the data lines.