Abstract: The invention relates to a color-filterless liquid crystal display device and a displaying method of the display device. The backlight module of the display device is partitioned into dynamic brightness adjustment sections adapted for being controlled by the local area dimming control technique. The liquid crystal display module of the display device is partitioned into display sections for being subjected to scanning. The sub-frame image data are adjusted reversely to that done by the local area dimming control technique, before being provided to the display sections by scanning. After the transmissivity of the respective display sections is changed, the LEDs located in the dynamic brightness adjustment sections and corresponding to the sub-frames are lighted up by local area dimming control signals capable of compensating for the adjustment.