Liquid crystal display device and manufacturing method thereof

A liquid crystal display (LCD) device, comprising:

• a first substrate including a display area and a non-display area disposed outside of the display area;
• a gate electrode disposed on the first substrate and including a first-layer gate electrode and a second-layer gate electrode disposed on the first-layer gate electrode;
• a pixel electrode disposed on the same layer as the first-layer gate electrode;
• a source electrode and a drain electrode disposed on the gate electrode to be spaced from each other;
• and
• a contact connecting the drain electrode and the pixel electrode and including a first-layer contact, which is disposed on the same layer as the pixel electrode, and a second-layer contact, which is disposed on the first-layer contact,
• wherein the contact is disposed between the drain electrode and the first substrate,
• wherein the first-layer gate electrode is disposed between the first substrate and the second-layer gate electrode,
• wherein the first-layer contact is disposed between the first substrate and the second-layer contact,
• wherein the first-layer gate electrode, the first-layer contact and the pixel electrode are made of the same transparent conductive material,
• wherein the second-layer gate electrode and the second-layer contact are made of the same metal, and
• wherein the first-layer contact and the second-layer contact are made of different materials.