Display control method, timing controller IC, and display device

A timing controller IC applied to a display device, comprising:

• an information acquisition circuit configured to acquire a preset grayscale voltage of a target pixel unit and a backlight brightness of a backlight region corresponding to the target pixel unit, in a current output display frame, wherein the preset grayscale voltage is a grayscale voltage to be output to the target pixel unit determined according to a display control information;
• and
• a grayscale voltage output circuit configured to output a first grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is less than or equal to a first preset brightness value, output a second grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is greater than the first preset brightness value, output a third grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is greater than or equal to a second preset brightness value;
• wherein the grayscale voltage output circuit is further configured to:
• acquire an actual grayscale voltage of the target pixel unit in an output display frame immediately previous to the current output display frame;
• determine the first grayscale voltage, the second grayscale voltage, or the third grayscale voltage according to a compensation parameter table related to backlight brightness, wherein different compensation parameter tables are retrieved respectively for the following cases;
• a case that the backlight brightness of the backlight region is less than or equal to the first preset brightness value, a case that the backlight brightness of the backlight region is greater than the first preset brightness value and less than the second preset brightness value, and a case that the backlight brightness of the backlight region is greater than or equal to the second preset brightness value,
• wherein the compensation parameter tables comprise:
• a first compensation parameter table for the case that the backlight brightness of the backlight region is less than or equal to the first preset brightness value;
• a second compensation parameter table for the case that the backlight brightness of the backlight region is greater than the first preset brightness value and less than the second preset brightness value;
• and a third compensation parameter table for the case that the backlight brightness of the backlight region is greater than or equal to the second preset brightness value;
• wherein the second grayscale voltage is greater than the first grayscale voltage, the second preset brightness value is greater than the first preset brightness value, and the third grayscale voltage is greater than the second grayscale voltage.