FIGS. 5A to 5C show a plasma display according to the second embodiment of the present invention, in which FIG. 5A is a plan view of the plasma display, FIG. 5B is a sectional view taken along a line 5B--5B' in FIG. 5A, and FIG. 5C is a sectional view taken along a line 5C--5C' in FIG. 5A;