An active matrix substrate (10) included in a liquid crystal display device of the present invention is arranged such that (i) source bus lines (12) (signal wires) are disposed so that each of the source bus lines (i) partially overlaps its corresponding pixel electrodes (14) adjacent to each other along a direction in which gate bus lines (11) (scanning wires) extend and (ii) leads from a border between the pixel electrodes (14) toward a central part of each of the pixel electrodes (14), and in the meantime, the source bus lines (12) are disposed so that at least part of overlap between each of the source bus lines (12) and the pixel electrodes (14) overlaps ribs (26) (orientation-changing sections) that change orientation of liquid crystal molecules contained in a liquid crystal layer. This achieves a liquid crystal display device capable of reducing display unevenness of an image without decreasing an aperture ratio even in a case where signal wires are disposed so that each of them leads toward central parts of corresponding pixel electrodes.