Method for color compensation in multi-color backlight display device and multi-color backlight display device

A multi-color backlight display device, wherein the multi-color backlight display device comprises a display panel and a backlight module, the backlight module comprises a plurality of light-emitting channels, and the display panel has a plurality of light modulation units, wherein the multi-color backlight display device further comprises:

• a memory;
• and
• at least one processor coupled to the memory, wherein the at least one processor performs operations comprising:
• obtaining a reference color gamut of the display panel;
• receiving input image data containing original color information of a plurality of pixels;
• calculating a current per-pixel gamut for each pixel based on an effective backlight color received by each pixel, wherein the effective backlight color corresponds to driving values of the plurality of light-emitting channels;
• and
• performing a pixel compensation operation on the plurality of pixels based on the current per-pixel gamut.