ison with a flat surface; [0040]FIGS. 2A and 2B are a plan view and its sectional view taken along the line 2B-2B, respectively, of a semiconductor light-emitting device according to a first embodiment of this invention; [0041]FIG. 3 is a sectional view showing manufacturing process of the semiconductor light-emitting device of the first embodiment; [0042]FIGS. 4A and 4B are a plan view and its se