A liquid crystal display device includes a gate line and a gate electrode connected to the gate line, on a substrate; a gate insulating layer on the gate electrode and the gate line; an active layer on the gate insulating layer over the gate electrode; an ohmic contact layer on the active layer; first source and drain electrodes on the ohmic contact layer; second source and drain electrodes connected to the first source and drain electrodes, respectively; a data line extending from the source electrode and crossing the gate line to define a pixel region; and a pixel electrode in the pixel region and extending from the second drain electrode.