A method for fabricating a liquid crystal display device includes: forming a pixel electrode on a substrate; forming a first conductive layer on the pixel electrode; forming a first photoresist pattern on the conductive layer; forming a source electrode forming portion, a channel forming portion and a pixel electrode forming portion using the first photoresist pattern as a mask; forming a semiconductor layer over an entire surface of the substrate; forming an insulating layer on the semiconductor layer; forming a second conductive layer on the insulating layer; forming a second photoresist pattern on the second conductive layer; forming an active layer using the second photoresist pattern; and forming a gate electrode on the active layer.