Liquid crystal display device and method for fabricating the same

A liquid crystal display device comprising:

• gate lines disposed on a substrate;
• data lines formed on the substrate and crossing the gate lines to define pixel regions;
• common lines disposed substantially in parallel to the gate lines;
• thin film transistors (TFTs) formed at intersections between the gate lines and the data lines, each of the TFTs including a gate electrode extending from the corresponding gate line, a gate insulation layer, an active layer, an ohmic contact layer, a source electrode extending from the corresponding data line and a drain electrode spaced apart from the source electrode;
• passivation layers, each of the passivation layers formed on the TFT and having a contact hole for exposing a part of the corresponding drain electrode;
• and
• pixel electrodes, each of the pixel electrodes having a dual layer structure composed of a metal conductive layer and a metal insulation layer formed on the corresponding passivation layer and electrically connected to the corresponding drain electrode via the corresponding contact hole,
• wherein the metal conductive layer of each pixel electrode is made of molybdenum titanium (MoTi), and the metal insulation layer of each pixel electrode is made of one selected from copper nitride (CuN) and molybdenum titanium nitride (MoTiN).