Liquid crystal display device and control method thereof, head-mounted display apparatus and medium

A method for controlling a liquid crystal display device, the liquid crystal display device comprising a display panel and a backlight device, the backlight device comprising at least one backlight zone, the display panel comprising at least one display zone, the backlight zone and the display zone corresponding to each other, the method comprising:

• obtaining a state of each pixel in the display panel based on inputted image data, the state of the pixel comprising a bright state or a dark state, wherein obtaining a state of each pixel in the display panel based on inputted image data comprises:
• obtaining a brightness value of each pixel in the display panel based on inputted image data;
• and determining a state of each pixel based on the brightness value of each pixel and a threshold brightness, and determining that the pixel is in the bright state when the brightness value of the pixel is greater than or equal to the threshold brightness;
• and determining that the pixel is in the dark state when the brightness value of the pixel is smaller than the threshold brightness;
• obtaining a display zone comprising both pixels in the bright state and pixels in the dark state based on the state of each pixel in the display panel, and using the obtained display zone as a destination zone;
• obtaining a halo region based on the state of the pixels in the destination zone, wherein the halo region is a region comprising pixels in the dark state in the destination zone;
• generating a first control signal based on the halo region;
• and
• controlling based on the first control signal a backlight zone to be adjusted, wherein the backlight zone adjacent to a destination backlight zone is determined as the backlight zone to be adjusted, and the destination backlight zone and the destination zone correspond to each other.