The invention provides a display device which comprises an array substrate, a color-film substrate and a spacer retaining wall. The array substrate and the color-film substrate are arranged to form paired boxes, and the spacer retaining wall is arranged between the array substrate and the color-film substrate and encircles the peripheral edges of a display region formed by the array substrate and the color-film substrate. The spacer retaining wall is made of electrostriction materials, and different driving voltages can be loaded on the spacer retaining wall, so that the vertical distances from the array substrate to the color-film substrate and between peripheral edge positions of the array substrate and the color-film substrate can be adjusted. The display device has the advantages that the internal heights of the boxes at the peripheral edges of liquid crystal display screens can be continuously adjusted, and accordingly the problem of 'gap peripheral yellowing or peripheral blanching' can be effectively solved.