In plane switching mode liquid crystal display device having particular common lines

1. An in-plane switching mode liquid crystal display device comprising:

first and second substrates;

a gate line and a data line arranged in a substantially horizontal and vertical direction, respectively, on the first substrate to define a pixel region;

a thin film transistor formed at a crossing of the gate line and the data line;

a common line disposed substantially parallel to the data line at a center of the pixel region;

a pixel electrode line overlapping the common line and forming a storage capacitor;

a common electrode electrically connected to the common line, having a bent structure and being symmetric with respect to the common line;

a pixel electrode electrically connected to the pixel electrode line, disposed substantially parallel to the common electrode, wherein a lateral electric field is formed between the common electrode and the pixel electrode;

a shielding line disposed substantially parallel to the data line at outer edges of the pixel region, and shielding a data signal reaching the pixel electrode; and

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

2. The device of claim 1 , wherein the pixel electrode line is disposed at the center of the pixel region.

3. The device of claim 1 , wherein the pixel electrode has a bent structure having a “Λ” or “V” shape.

4. The device of claim 1 , wherein the shielding line is electrically connected to the common electrode.