Liquid crystal display device with reduced resistance to common voltages, and related methods

Abstract

A liquid crystal display device that comprises a thin film transistor array panel including a voltage transfer circuit that includes a pad region for receiving a common voltage, a short region for transferring the common voltage, and a center region that connects the pad region to the short region. The center region includes a composite conductive layer comprising a first electrically conductive layer of a first resistance and a second electrically conductive layer of a second resistance, wherein the first resistance is less than the second resistance. The first electrically conductive layer of the composite conductive layer preferably comprises a material of relatively low resistance, such as aluminum or an aluminum alloy. In addition, the first electrically conductive layer may include an anodic oxide layer for inhibiting hillock formations. The liquid crystal display device further includes a color filter panel which includes a common electrode and a conductive member that electrically connects the common electrode to the short region of the thin film transistor array panel. In another embodiment, the first electrically conductive layer extends from the pad region to the short region and is exposed at either region. In yet another embodiment, the first electrically conductive layer extends from the center region to the short region where it is exposed at the short region.