An organic light emitting display device comprising: data lines (D1 to Dm) and an auxiliary data line (RD1, RD2); scan lines (S1 to Sn+1) and emission control lines (E1 to En) crossing the data lines (D1 to Dm) and the auxiliary data line (RD1, RD2); display pixels at crossing regions of the data lines (D1 to Dm), the scan lines (S1 to Sn+1) and the emission control lines (E1 to En); wherein the display pixels each comprise an organic light emitting diode (OLED) and a display pixel driver comprising a plurality of transistors and configured to supply a driving current to the organic light emitting diode (OLED); auxiliary pixels at crossing regions of the auxiliary data line (RD1, RD2), the scan lines (S1 to Sn+1) and the emission control lines (E1 to En); and auxiliary lines coupled to the auxiliary pixels; wherein each auxiliary line runs parallel to a scan line (S1 to Sn+1) and crosses the area of a display pixel, wherein each auxiliary pixel comprises an auxiliary pixel driver which is configured to provide a driving current to a respective said auxiliary line when data is received on the corresponding auxiliary data line (RD1, RD2), wherein each auxiliary line is coupled to the organic light emitting diode (OLED) of one of the display pixels, and wherein each of the auxiliary pixels further comprises: a discharge transistor having its drain - source path connected between one of the auxiliary lines and a first power voltage line (VINL1) configured to receive a first power voltage; a discharge transistor controller comprising a plurality of transistors and configured to control the discharge transistor, and wherein the discharge transistor controller is configured to enable discharging of the auxiliary line to the first power voltage through the discharge transistor whenever the light emission control signal (EMk) for the display pixels overlapping with the auxiliary line changes to a value for light emission (Von), and wherein the discharge transistor controller is optionally further configured to enable discharging of the auxiliary line to the first power voltage through the discharge transistor whenever the voltage of a scan line (SCANk+1) immediately adjacent to the auxiliary line and forming a fringe capacitance with the auxiliary line changes. data lines (D1 to Dm) and an auxiliary data line (RD1, RD2); scan lines (S1 to Sn+1) and emission control lines (E1 to En) crossing the data lines (D1 to Dm) and the auxiliary data line (RD1, RD2); display pixels at crossing regions of the data lines (D1 to Dm), the scan lines (S1 to Sn+1) and the emission control lines (E1 to En); wherein the display pixels each comprise an organic light emitting diode (OLED) and a display pixel driver comprising a plurality of transistors and configured to supply a driving current to the organic light emitting diode (OLED); auxiliary pixels at crossing regions of the auxiliary data line (RD1, RD2), the scan lines (S1 to Sn+1) and the emission control lines (E1 to En); and auxiliary lines coupled to the auxiliary pixels; wherein each auxiliary line runs parallel to a scan line (S1 to Sn+1) and crosses the area of a display pixel, wherein each auxiliary pixel comprises an auxiliary pixel driver which is configured to provide a driving current to a respective said auxiliary line when data is received on the corresponding auxiliary data line (RD1, RD2), wherein each auxiliary line is coupled to the organic light emitting diode (OLED) of one of the display pixels, and wherein each of the auxiliary pixels further comprises: a discharge transistor having its drain - source path connected between one of the auxiliary lines and a first power voltage line (VINL1) configured to receive a first power voltage; a discharge transistor controller comprising a plurality of transistors and configured to control the discharge transistor, and a discharge transistor having its drain - source path connected between one of the auxiliary lines and a first power voltage line (VINL1) configured to receive a first power voltage; a discharge transistor controller comprising a plurality of transistors and configured to control the discharge transistor, and wherein the discharge transistor controller is configured to enable discharging of the auxiliary line to the first power voltage through the discharge transistor whenever the light emission control signal (EMk) for the display pixels overlapping with the auxiliary line changes to a value for light emission (Von), and