Disclosed is a liquid crystal display device including a reflective sheet with high rigidity and low shrinkage and expansion, the liquid crystal display device comprising: a liquid crystal panel; a light guide plate provided below the liquid crystal panel; a light source for supplying light to the light guide plate; a reflective sheet provided below the light guide plate; a glass fiber coating layer provided on the upper surface and/or the lower surface of the reflective sheet; and a lower chassis provided below the reflective sheet.