1. A Liquid Crystal Display (LCD) device comprising: an upper substrate in which a plurality of red (R), green (G), blue (B) and white (W) color filters are formed; a lower substrate in which a plurality of R, G, B and W sub-pixels are formed in respective regions defined by intersection of a plurality of gate lines and data lines; and a liquid crystal layer formed between the upper substrate and the lower substrate, wherein pixels comprise a first pixel having R, G and B sub-pixels, a second pixel having R, G and W sub-pixels, a third pixel having R, B and W sub-pixels and fourth pixel having G, B and W sub-pixels, and wherein the second pixel shares a B sub-pixel in a pixel adjacent thereto in a vertical direction and a horizontal direction, the third pixel shares a G sub-pixel in a pixel adjacent thereto in a vertical direction and a horizontal direction, the fourth pixel shares an R sub-pixel in a pixel adjacent thereto in a vertical direction and a horizontal direction, and a pixel comprising a W sub-pixel is disposed between two pixels which each comprise the R, G, and B sub-pixels.