A method for manufacturing a transflective LCD includes forming a gate line and a gate pad extending from the gate line on a substrate, forming an gate insulation layer over an entire surface of the substrate, forming a data line and a data pad extending from the data line, the data line crossing the gate line to define a unit pixel, forming a thin film transistor at the crossing of the gate line and the data line, forming a passivation layer over an entire surface of the substrate including the thin film transistor, patterning the passivation layer to form a plurality of contact holes each exposing a corresponding drain electrode, the gate pad, and the data pad of the thin film transistor, forming a transmissive electrode at a transmissive portion in the unit pixel region on the passivation layer, forming a reflective electrode at a reflective portion in the unit pixel region on the passivation layer, and forming an oxidation prevention layer including a transparent conductive film and a metal layer, wherein the oxidation prevention layer contacts the gate pad and the data pad through the contact hole.