Array substrate for display device and method for fabricating the same

An array substrate for a display device, comprising:

• a barrier metal layer and a metal wiring formed on a substrate;
• an insulating layer formed on the substrate including the metal wiring and the barrier metal layer;
• a passivation film formed on the insulating layer, and having a contact hole exposing a portion of the metal wiring and the barrier metal layer;
• and
• a conductive layer pattern formed on the passivation film and being in contact with the exposed metal wiring and the barrier metal layer through the contact hole.

A method for fabricating an array substrate for a display device, the method comprising:

• forming a barrier metal layer and a metal wiring on a substrate;
• forming an insulating layer and a passivation film on the substrate including the metal wiring and the barrier metal layer;
• selectively etching the passivation film and the insulating layer to form a contact hole exposing a portion of the metal wiring and the barrier metal layer;
• and
• forming a conductive layer pattern on the passivation film and being in contact with the exposed metal wiring and the barrier metal layer through the contact hole.