A liquid crystal display device (100) according to the present invention includes a vertical alignment type liquid crystal layer (3); and a pair of optical alignment films (12, 22). A plurality of picture elements (R, G, B, Y) each include four liquid crystal domains (D1 through D4) in which tilt directions of liquid crystal molecules when a voltage is applied are different. The four liquid crystal domains are located in a matrix of 2 rows×2 columns. The pair of optical alignment films have such an alignment regulation force that causes an identical alignment pattern to appear in repetition in the liquid crystal layer along a first direction which is parallel to one of a row direction and a column direction, with 2n pixels (n is an integer of 1 or greater) being a minimum unit. In the 2n pixels which form the repeat unit of alignment pattern, there are first picture elements and second picture elements in a mixed state, the first picture elements each including the four liquid crystal domains located in a first order, and the second picture elements each including the four liquid crystal domains located in a second order which is different from the first order. According to the present invention, when the 4D-RTN mode is adopted for a liquid crystal display device in which one pixel includes a picture element having a different size from that of another picture element, increase of the cost and the time which are required for optical alignment processing can be suppressed.