Disclosed is a liquid crystal display device to display moving and still images with superior image quality, comparable to common LCDs and to display memory images by a voltage lower than conventional electronic paper, and a method for operating the same. The liquid crystal display device comprises: a pair of electrode substrates facing each other; an orientation film of a polymer material on the pair of electrode substrates; a liquid crystal material between the pair of electrode substrates, wherein the liquid crystal display device displays an image by varying orientation of the liquid crystal material and a surfacial region of the orientation film, depending on temperature and voltage.