An array substrate for an LCD device includes a first TFT including a first semiconductor layer, a first gate electrode, wherein the first gate electrode is directly over the first semiconductor layer; a first protrusion extending from the first gate electrode along an edge of the first semiconductor layer; a second TFT including a second semiconductor layer, a second gate electrode, wherein the second gate electrode is directly over the second semiconductor layer; a second protrusion extending from the second gate electrode along an edge of the second semiconductor layer; a third TFT connected to crossed data and gate lines including a third semiconductor layer, a third gate electrode, wherein the third gate electrode is directly over the third semiconductor layer; a third protrusion extending from the third gate electrode along an edge of the third semiconductor layer; and a pixel electrode.