The liquid crystal display device includes a main supporter in which a backlight and an LCD panel are mounted, and two bottom covers that are engaged with the main supporter to protect the backlight and the LCD panel, wherein the bottom covers are symmetrical to each other to be located at both sides of a long direction of the main supporter. The disclosed compound contain two or more ligand moieties covalently linked together by one or more linking groups. To compensate for this coupling, the read process for a given memory cell will take into account the programmed state of an adjacent memory cell. The case includes an upper portion and a lower portion. A drive controller is provided for controlling drive of the photosensitive drum driver and the developing roller driver.