Provided is a liquid crystal display device (100), including a pixel electrode (Px) and a common electrode (CT) which are stacked via an insulating layer, one of the pixel electrode (Px) and the common electrode (CT) including slits (SL) formed therein, for aligning liquid crystal molecules by an electric field generated by the pixel electrode (Px) and the common electrode (CT), in which the insulating layer is formed so as to increase in thickness from a vicinity of ends (13a, 13b) in a longitudinal direction of the slits (SL) toward the ends (13a, 13b). Thus, the transmittance of the liquid crystal display device is improved.