Backlight adjustment method of display panel, backlight adjustment device, and display device reducing red pixel color shift

A backlight adjustment method of a display panel, wherein the display panel includes at least one pixel area and at least one backlight module area, wherein the pixel area and the backlight module area are in one-to-one correspondence, and wherein each of the pixel areas includes pixel units, the adjustment method comprising:

• acquiring first, second, and third components of each of the pixel units in the pixel area in a first color space;
• acquiring a hue angle value and a chroma value in a second color space according to an average value of the first component, an average value of the second component, and an average value of the third component of the pixel unit in the pixel area;
• acquiring specified lightness of a blue backlight module and a green backlight module in the backlight module area corresponding to the pixel area according to the hue angle value and the chroma value;
• and
• performing at least one of adjusting lightness of the blue backlight module according to the specified lightness of the blue backlight module and adjusting lightness of the green backlight module according to the specified lightness of the green backlight module,
• wherein the specified lightness of the blue backlight module is less than the lightness of the blue backlight module before the adjustment, and the specified lightness of the green backlight module is less than the lightness of the green backlight module before the adjustment, and
• wherein the step of acquiring specified lightness of a blue backlight module and a green backlight module according to the hue angle value and the chroma value includes acquiring the specified lightness of the blue backlight module and the green backlight module according to the chroma value when the hue angle value is greater than 0 degree and is less than or equal to 45 degrees.