The invention relates to a liquid crystal display device which comprises a liquid crystal panel which includes a first substrate, a liquid crystal layer and a second substrate, wherein, the liquid crystal layer is clamped by the second substrate and the first substrate. One side of the first substrate, which is adjacent to the liquid crystal layer, includes a black matrix, a color filter layer and a conducting layer, wherein, the black matrix is made of insulating material mixed with conducting material to cause the black matrix to have electric conductivity; the color filter layer and the black matrix are interlacedly arranged; the conducting layer covers the black matrix and the color filter layer and is electrically connected with the black matrix. The black matrix has the electric conductivity and is electrically connected with the conducting layer, thus remarkably reducing the resistance of the substrate and improving the interference of the liquid crystal display device.