An array substrate for a liquid crystal display device, includes: a gate line and a data line on a substrate, the data line crossing the gate line to define a pixel region; an insulating layer between the gate line and the data line; a switching element adjacent to a crossing of the gate line and the data line; a pixel electrode connected to the switching element, the pixel electrode disposed in the pixel region; and a first buffer pattern at a first side of one of the gate line and the date line and overlapped with the other one of the gate line and the date line, the first buffer pattern being disposed at the same layer as the one of the gate line and the date line.