The present invention provides a liquid crystal display device including an active matrix substrate with improved characteristics and providing high-contrast between black and white displays. The active matrix substrate of the present invention is an active matrix substrate, including: pixel electrodes arranged in a matrix pattern; a source line extending in a column direction and overlapping with any adjacent two of the pixel electrodes in a row direction; and a storage capacitor line extending in the row direction and intersecting with the source line, wherein the pixel electrodes, the source line, and the storage capacitor line are disposed in different layers stacked with an insulating film therebetween, the source line has bend points below both of the adjacent two row pixel electrodes and has a crossing portion passing across a space between the adjacent two row pixel electrodes, the storage capacitor line has a portion extending in the column direction and overlapping with the space between the adjacent two row pixel electrodes, and the source line overlaps with the storage capacitor line substantially only at an intersection thereof.