The present invention provides a liquid crystal display device, which includes a backlight module, a mold frame arranged on the backlight module, a liquid crystal display panel arranged on the mold frame, a front enclosure made of a plastic material and arranged on the liquid crystal display panel, and a conductor piece mounted on the front enclosure. The backlight module includes a backplane made of a conductive materiel, a backlight source mounted in the backplane, and an optic film assembly received in the backplane. The conductor piece includes a first conductive section to which a second conductive section is connected. The first conductive section is arranged between the front enclosure and the liquid crystal display panel to engage the liquid crystal display panel. A bolt is received through the second conductive section of the conductor piece, the front enclosure, and the mold frame to engage and fix to the backplane.