A liquid crystal display device includes a wire grid polarizer, in which the wire grid polarizer is directly formed on a lower substrate, thereby decreasing the thickness of the liquid crystal display. In the wire grid polarizer formed on the lower substrate, a plurality of protective layers are formed on polarizing patterns that perform a polarizing function, so that it is possible to reduce or minimize the deterioration of characteristics of thin film transistors of the liquid crystal display, which are formed on the protective layers.