Driving methods for display panels are provided, in which a Kth row of pixels in a pixel array is driven during a first period, and a K+1th row of pixels in the pixel array is driven during a second period. A control clock applied for a charge pump is toggled at least N times during a third period between the first and second periods, and the control clock is maintained at a fixed logic level during the first and second periods, in which N≧2.