Liquid crystal display device and method of fabricating the same

1. A liquid crystal display device, comprising:

a plurality of gate lines and data lines on a first substrate defining a plurality of pixel regions;

a thin film transistor within the pixel regions, thin film transistor including a gate electrode on the first substrate, a gate insulating layer on the first substrate, a semiconductor layer on the gate insulating layer, and source and drain electrodes on the semiconductor layer and the gate insulating layer;

a passivation layer over the first substrate to cover the thin film transistor;

a pixel electrode within the pixel regions;

a first TiOx layer on the upper portion of the source and drain electrodes; and

a second TiOx layer only directly contact on the upper portion of the semiconductor layer,

wherein the source and drain electrodes are contacted with the gate insulating layer, and at least one of the first TiO x layer and the second TiO x layer has a hydrophilic surface.

2. The device according to claim 1 , wherein the second TiOx layer on the semiconductor layer is an ohmic contact layer.

3. The device according to claim 1 , further comprising:

a black matrix on a second substrate;

a color filter layer on the second substrate; and

a liquid crystal material layer between the first substrate and the second substrate.

4. The device according to claim 1 , further comprising a third TiOx layer on the upper portion of the gate electrode.

5. A liquid crystal display device, comprising:

a plurality of gate lines and data lines on a first substrate defining a plurality of pixel regions;

a thin film transistor within the pixel regions, the thin film transistor including:

a gate electrode on the first substrate;

a gate insulating layer on the first substrate;

a semiconductor layer on the gate insulating layer;

source and drain electrodes on the semiconductor layer; and

a passivation layer on the first substrate;

a pixel electrode within the pixel regions; and

a TiO 2 layer formed on an upper portion of at least one of the gate electrode, the semiconductor layer, the source and drain electrodes, the passivation layer, and the pixel electrode, the TiO 2 layer including a hydrophilic surface.

6. The device according to claim 5 , wherein the TiO 2 layer on the semiconductor layer is an ohmic contact layer.

7. The device according to claim 5 , further comprising:

a black matrix on a second substrate;

a color filter layer on the second substrate; and

a liquid crystal material layer between the first substrate and the second substrate.