| http://www.w3.org/ns/prov#value | - The following is a description of an optical path in which the light passes through the organic EL layer 1 showing respective colors in a case where the size of the unit structure of the retro-reflector 5 in the organic EL display element shown in FIG. 1 is larger than the size of dots showing respective colors of red (R), green (G), and blue (B), and in a case where the size of the unit structure
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