A display system, characterized by comprising: a processor configured to generate a data clock signal and generate a backlight driving signal according to the data clock signal; a pixel array configured to generate an image; an image driving device coupled to the processor and the pixel array and configured to control the pixel array according to the data clock signal; a backlight module configured to generate a backlight signal; and a backlight driving device coupled to the processor and the backlight module and configured to control the backlight module according to the backlight driving signal; wherein the data clock signal comprises a data waveform comprising a first data square wave corresponding to a scan time followed by a blank time interval corresponding to a blanking time such that the addition of the first data square wave and the blank time interval corresponds to a frame period, the backlight driving signal comprises a backlight waveform comprising a first and second waveform, the first waveform comprising a first backlight off time followed by a first backlight square wave while liquid crystal polarities of pixels in the pixel array are still operated under a transient state, the second waveform comprising a second backlight off time followed by a second backlight square wave within the blank time interval while liquid crystal polarities of pixels in the pixel array are already stable, and the backlight waveform is synchronized with the frame period; and wherein a height of the second backlight square wave is equal to a first value, a width of the second backlight square wave is equal to a second value, a height of the first backlight square wave is equal to a third value, a width of the first backlight square wave is equal to a fourth value, and the first value, the second value, the third value, and the fourth value are positive values, the third value and the fourth value are determined by the first value, the second value, and an image brightness configuration value, the width and height of the first backlight square wave are calculated in order to transmit a minimum prefixed amount of energy independently of the image brightness configuration value while the width and the height of the second backlight square wave are calculated in order to transmit the energy difference between the energy value derived from the image brightness configuration value and the energy transmitted by the first backlight square wave, and the width of the second backlight square wave is never wider than the blank time interval for all possible image brightness configuration values. a processor configured to generate a data clock signal and generate a backlight driving signal according to the data clock signal; a pixel array configured to generate an image; an image driving device coupled to the processor and the pixel array and configured to control the pixel array according to the data clock signal; a backlight module configured to generate a backlight signal; and a backlight driving device coupled to the processor and the backlight module and configured to control the backlight module according to the backlight driving signal; wherein the data clock signal comprises a data waveform comprising a first data square wave corresponding to a scan time followed by a blank time interval corresponding to a blanking time such that the addition of the first data square wave and the blank time interval corresponds to a frame period, the backlight driving signal comprises a backlight waveform comprising a first and second waveform, the first waveform comprising a first backlight off time followed by a first backlight square wave while liquid crystal polarities of pixels in the pixel array are still operated under a transient state, the second waveform comprising a second backlight off time followed by a second backlight square wave within the blank time interval while liquid crystal polarities of pixels in the pixel array are already stable, and the backlight waveform is synchronized with the frame period; and wherein a height of the second backlight square wave is equal to a first value, a width of the second backlight square wave is equal to a second value, a height of the first backlight square wave is equal to a third value, a width of the first backlight square wave is equal to a fourth value, and the first value, the second value, the third value, and the fourth value are positive values, the third value and the fourth value are determined by the first value, the second value, and an image brightness configuration value, the width and height of the first backlight square wave are calculated in order to transmit a minimum prefixed amount of energy independently of the image brightness configuration value while the width and the height of the second backlight square wave are calculated in order to transmit the energy difference between the energy value derived from the image brightness configuration value and the energy transmitted by the first backlight square wave, and the width of the second backlight square wave is never wider than the blank time interval for all possible image brightness configuration values.