A method of fabricating a substrate for a liquid crystal display device includes: disposing a transparent substrate on a stage of a laser apparatus; irradiating a laser beam having a predetermined power onto the transparent substrate to form a light shielding region in the transparent substrate surrounding first to third light transmitting regions; and forming a color filter layer including red, green and blue sub-color filters respectively in the first to third light transmitting regions, wherein boundaries of the red, green and blue sub-color filters correspond to the light shielding region.