1. A method for fabricating a Fringe Field Switching (FFS) mode Liquid Crystal Display (LCD) device, the method comprising: providing a first substrate and a second substrate; forming a color filter on the first substrate, the color filter serving as a common electrode as a common voltage is applied to a metal layer, and implementing colors as a sub-wavelength transmissive pattern having a predetermined period is formed at the metal layer; forming a gate line and a gate electrode on the first substrate having the color filter formed thereon; forming a first insulating layer on the first substrate having the gate electrode and the gate line formed thereon; forming an active pattern on the first substrate having the first insulating layer formed thereon; forming source/drain electrodes on the first substrate having the active pattern formed thereon, and forming a data line crossing the gate line to define a pixel region; forming a second insulating layer formed on the first substrate having the source/drain electrodes and the data line formed thereon; forming a pixel electrode on the first substrate having the second insulating layer formed thereon, the pixel electrode for generating a fringe field together with the metal layer of the color filter; and bonding the first and second substrates to each other.