Patent ID: 7532267

Claim:
A liquid crystal display device, comprising: a plurality of gate lines and data lines crossing each other to define a plurality of pixel regions; a plurality of thin film transistors, each disposed in one of the pixel regions, each thin film transistor including: a gate electrode on a first substrate; a gate insulating layer over the first substrate; a semiconductor layer on the gate insulating layer; and source/drain electrodes on the semiconductor layer; a passivation layer over the first substrate including the source/drain electrodes of the thin film transistors; a plurality of pixel electrodes, each disposed in one of the pixel regions; at least one Ti layer on at least one layer of the gate electrode and the source/drain electrodes of the thin film transistors; and a TiO 2 masking layer formed in at least one of the thin film transistor or an at least one of the passivation layer and the pixel electorde.