A detachable liquid crystal display device includes a liquid crystal module and a cradle. The liquid crystal module includes a liquid crystal panel; an optical sheet provided on a rear surface of the liquid crystal panel; an interface disposed on a rear surface of the liquid crystal panel; a power receiver disposed on the rear surface of the liquid crystal panel; a memory card; and a timing controller for receiving second image data from external devices and permitting the first image data stored in the memory card to be displayed in the liquid crystal panel. The cradle includes a lamp emitting light; an inverter for supplying alternating current to the lamp; a connector for receiving third image data from external equipment; and an interface converter for applying the third image data to the interface of the liquid crystal module.