To prevent light leakage and compensate for a step between a display region and a non-display region, a thin film transistor array substrate can include a base substrate having a display region and a non-display region, a plurality of pixel regions defined by gate lines and data lines crossing each other in the display region of the base substrate, a common line corresponding to between adjacent pixel regions, a thin film transistor and a color filter in each pixel region, a first dummy color filter between the adjacent pixel regions, a second dummy color filter in the non-display region on the base substrate, the second dummy color filter being provided at an upper surface thereof with at least one recess, and a protective film over the entire surface of the base substrate to cover the first and second dummy color filters and fill the recess.