A head-up display (HUD) device configured to project at least one of an image or a text on a windshield includes a display panel, a backlight module configured to emit light to the display panel, and an optical guide module configured to guide the at least one of the image or the text displayed on the display panel to the windshield. The backlight module includes a plurality of light sources configured to emit light to the display panel in different directions from one another such that the at least one of the image or text is independently projected on different regions of the windshield.