Liquid crystal display device and fabricating method thereof

A method for fabricating a liquid crystal display device that includes a gate line on a substrate, a data line to provide crossing the gate line with a gate insulating film there between and defining a pixel area, a common line formed in parallel to the gate line, a thin film transistor connected to the gate line and the data line, a passivation film overlying the thin film transistor, a pattern hole perforating the passivation film, a pixel electrode connected to the thin film transistor, and a common electrode connected to the common line to form a horizontal electric field with the pixel electrode, wherein the step of forming at least one of the gate line, the data line, the common line, the pixel electrode and the common electrode comprises the steps of:

• forming an insulation film on the substrate;
• forming a photo resist pattern of a reverse taper shape on the insulation film;
• forming the pattern hole by etching the insulation film using the photo resist pattern as a mask;
• forming a first conductive layer having a first width within the contact hole to cover the photo resist pattern;
• forming a second conductive layer to cover the first conductive layer by having it expanded more outward than the first conductive layer, wherein the second conductive layer has a second width which is wider than the first width;
• and
• patterning the first and second conductive layers by removing the photo resist pattern in which the first and second conductive layers remain behind.