Display device and control method thereof

The invention relates to the technical field of display, particularly provides a display device and a control method of the display device, and aims to solve the problem that the overall power consumption of the display device cannot be further effectively reduced by an existing method for reducing power consumption. In order to achieve the purpose, the display device comprises a time sequence control chip and a power management integrated circuit, and the time sequence control chip is used for obtaining system time sequence control signals and sending a first instruction to the power management integrated circuit in a blanking area of each frame of system time sequence control signal; the power management integrated circuit comprises a switching frequency switching circuit and a voltage regulation circuit, and the switching frequency switching circuit is used for responding to a first instruction and stopping outputting a switching frequency signal; and the voltage regulation circuit is used for stopping outputting the regulation voltage when the switching frequency switching circuit stops outputting the switching frequency signal. The logic power consumption of the power management integrated circuit can be effectively reduced, so that the overall power consumption of the display device is reduced.