Display screen and pulse width modulation (PWM) signal adjusting circuit thereof

The invention is applicable to the technical field of display screens, and provides a display screen and a pulse width modulation (PWM) signal adjusting circuit thereof. The PWM signal adjusting circuit comprises a double-input module and a phase delay module, wherein the double-input module is used for receiving a first PWM signal and a second PWM signal, and performing AND operation on the first PWM signal and the second PWM signal to obtain a third PWM signal; and the phase delay module is used for receiving the third PWM signal output by the double-input module and performing phase delay processing on the third PWM signal to obtain a fourth PWM signal. Since the first PWM signal and the second PWM signal have the same frequency and different pulse positions, the number of pulses included in the third PWM signal can be effectively increased, and the increased number of pulses can improve the refresh frequency of a screen, thereby effectively reducing bright and dark fringes in a screen image driven by the