Liquid crystal display driving method, electronic device, and driver chip

A drive chip of a liquid crystal display (LCD), the LCD further comprising:

• a display module comprising liquid crystal molecules, and a mini light emitting diode (Mini LED) backlight module comprising red green blue (RGB) Mini LEDs configured to provide a backlight source to the display module, wherein the driver chip is configured to:
• determine drive voltages of pixel units in a plurality of screen regions of the LCD based on an image frame to be displayed;
• determine priorities for the plurality of screen regions of the LCD, comprising:
• determining, for one of the screen regions, pixel values of pixel points corresponding to pixel units in the screen region in the image frame;
• determining target pixel values of pixel points corresponding to the pixel units in the screen region in a previous frame of the image frame;
• acquiring pixel change values between the pixel values and the target pixel values of the pixel points;
• and
• determining a priority of the screen region based on an average value of the pixel change values of the pixel points, the priority of the screen region being positively correlated with the average value of the pixel change values;
• output, for one of the plurality of screen regions, a first drive signal to a pixel unit in the screen region based on the determined drive voltage corresponding to the pixel unit, the first drive signal being used for controlling a liquid crystal molecule corresponding to the pixel unit in the screen region to rotate at the drive voltage;
• and
• output a second drive signal to the Mini LED backlight module when the first drive signal is output to the pixel unit in the screen region and a target duration is reached, the second drive signal being used for controlling a part of the backlight source corresponding to the screen region to be turned on.

A non-transitory computer-readable storage medium, storing at least one computer program, the at least one computer program being loaded and executed by a controller of a liquid crystal display (LCD) to implement:

• determining drive voltages of pixel units in a plurality of screen regions of the LCD based on an image frame to be displayed;
• determining priorities for the plurality of screen regions of the LCD, comprising:
• determining, for one of the screen regions, pixel values of pixel points corresponding to pixel units in the screen region in the image frame;
• determining target pixel values of pixel points corresponding to the pixel units in the screen region in a previous frame of the image frame;
• acquiring pixel change values between the pixel values and the target pixel values of the pixel points;
• and
• determining a priority of the screen region based on an average value of the pixel change values of the pixel points, the priority of the screen region being positively correlated with the average value of the pixel change values;
• outputting, for one of the plurality of screen regions, a first drive signal to a pixel unit in the screen region based on the determined drive voltage corresponding to the pixel unit, the first drive signal being used for controlling a liquid crystal molecule corresponding to the pixel unit in the screen region to rotate at the drive voltage;
• and
• outputting a second drive signal to a backlight source of the LCD when the first drive signal is output to the pixel unit in the screen region and a target duration is reached, the second drive signal being used for controlling a part of the backlight source corresponding to the screen region to be turned on.