FIGS. 3a and 3 b are a plan view of a conventional blue light emitting diode and a sectional view taken along line A-A of FIG. 3a, respectively. [0028]FIG. 4a is a plan view of a blue light emitting diode according to the first embodiment of the present invention and FIG. 4b is a sectional view taken along line 2A-2A of FIG. 4a. [0029]FIGS. 5a-5 c are plan views showing modifications of the first