Backlight module, liquid crystal display device and backlight adjustment method thereof

A liquid crystal display device, wherein the liquid crystal display device comprises a backlight module and a liquid crystal panel, and the liquid crystal panel and the backlight module are stacked up;

• the backlight module comprises a light guide plate and a LED light bar located at an incident side of the light guide plate, and the LED light bar comprises a driving chip, LED lamps of at least two different color temperatures, which are alternately aligned, and the LED lamps of the same color temperature are coupled in series to construct a route, and each route is coupled to an adjustable resistance in series, and the routes constructed by the LED lamps after parallel connection are all coupled to the driving chip to construct a driving circuit, and the backlight module further comprises a control module, and the control module is coupled to the driving circuit.

A backlight adjustment method of a liquid crystal display device, wherein the backlight adjustment method of the liquid crystal display device comprises:

• determining a color temperature and a white dot color coordinate for display of the liquid crystal display;
• the control module adjusts the adjustable resistance of the each route to change a current value flowing through the LED lamps of the route according to the color temperature and the white dot color coordinate for display.