Fringe field switching liquid crystal display device and method of fabricating the same

A fringe field switching (FFS) liquid crystal display (LCD) device comprising:

• a first substrate;
• a gate line and a data line formed on the first substrate and intersecting each other to define a pixel region;
• a thin film transistor (TFT) formed in crossing of the gate line and the data line and including a gate electrode, an active layer, and source and drain electrodes;
• an organic protective film formed on the first substrate with the TFT, the gate line, and the data line formed thereon, and formed of an organic insulating layer;
• a common electrode formed as a single pattern on the entire first substrate with the organic protective film formed thereon;
• a low temperature protective film formed on the first substrate with the common electrode formed thereon and including an upper layer and a lower layer, the upper layer having more porous than the lower layer;
• a pixel electrode formed in the pixel region of the first substrate with the low temperature protective film formed thereon and having a box-like shape with a plurality of slits;
• and
• a second substrate attached to the first substrate in a facing manner,
• wherein a ratio of an Si—H/Si—N bonding of the upper layer of the low temperature protective film is 80% or greater.