An object of the present invention is to implement a bright liquid crystal display device having a high contrast ratio and a wide viewing angle. A liquid crystal display device according to the present invention has: a number of data lines; gate lines formed so as to cross the number of data lines; a number of switching elements formed in locations where the number of data lines and the number of gate lines cross; a reflection area and a transmission area formed within each pixel; a liquid crystal layer sandwiched between first and second substrates; a common electrode placed between the first substrate and the liquid crystal layer; and a pixel electrode placed between the second substrate and the liquid crystal layer, and the common electrode has slits or protrusions, and the data lines overlap the slits in the common electrode or protrusions of the common electrode in the direction of normal to a surface of the first substrate in the configuration.