Pixel driving circuit

The invention provides a pixel driving circuit which is provided with a light-emitting unit, ten switches and two capacitors. The driving current of the light-emitting unit only flows through one of the switches, thereby saving power consumption. In addition, the pixel driving circuit can compensate the critical voltage and the operating voltage, so that the light-emitting unit can provide consistent brightness. 本发明提出一种像素驱动电路，具有发光单元、十个开关与两个电容。发光单元的驱动电流只会流经其中一个开关，借此节省功率消耗。此外，此像素驱动电路可以补偿临界电压与操作电压，借此发光单元会提供一致的亮度。