Dimming method of display device and display device

A dimming method of a display device, comprising:

• obtaining a target brightness of the display device;
• when the target brightness is less than a first preset dimming brightness threshold, setting a dimming mode of the display device to a PWM dimming mode;
• and
• when the target brightness is larger than a second preset dimming brightness threshold, setting the dimming mode of the display device to a DC dimming mode;
• wherein the first preset dimming brightness threshold is less than the second preset dimming brightness threshold,
• wherein:
• the display device includes a light-emitting control circuit and a light-emitting module;
• the light-emitting control circuit is electrically connected to the light-emitting module;
• the light-emitting control circuit is used to provide a light-emitting control signal to the light-emitting module;
• the display device further has a transition dimming mode;
• when the target brightness is less than or equal to the second preset dimming brightness threshold and the target brightness is larger than or equal to the first preset dimming brightness threshold, the dimming mode of the display device is set to the transition dimming mode, wherein the transition dimming mode is executed between the PWM dimming mode and the DC dimming mode;
• in the PWM dimming mode, a number of pulses of the light-emitting control signal controlled by the light-emitting control circuit in one frame of display screens is N1;
• in the DC dimming mode, the number of pulses of the light-emitting control signal controlled by the light-emitting control circuit in one frame of display screens is N2;
• and
• in the transition dimming mode, the number of pulses of the light-emitting control signal controlled by the light-emitting control circuit in one frame of display screens is N3, wherein N1, N2, and N3 are all positive integers, and N2<N3<N1.