. 2B is a cross-sectional view taken along a line X-X??? of FIG. 2A; [0043]FIG. 3A is a plan view showing a bonding surface of the front substrate at which surface the rear substrate and the front substrate, those substrates constituting the LCD panel of the first structure in the prior art, are bonded to each other; [0044]FIG. 3B is a cross-sectional view taken along a line X-X??? of FIG. 3A; [00