Humidity-sensing structural color emitting laminate and structural color display device self-powered by triboelectricity including the same laminate

A structural color display device which is self-powered by triboelectricity, comprising:

• an ionic gel electrode layer;
• and
• a humidity-sensing structural color emitting laminate formed on one surface of the electrode layer,
• wherein the humidity-sensing structural color emitting laminate, comprises:
• a block copolymer comprising a hydrophilic segment and a hydrophobic segment,
• wherein the hydrophilic segment forms a photonic crystal to form a hydrophilic layer, and the hydrophobic segment forms a photonic crystal to form a hydrophobic layer distinct from the hydrophilic layer,
• wherein the photonic crystal of the hydrophilic layer further comprises an alkali metal salt and a hydrophilic polymer, and the hydrophilic polymer forms an interpenetrate network with the hydrophilic segment, and
• wherein the hydrophilic layer and the hydrophobic layer are alternately laminated to have a structure that exhibits a structural color by light interference, and when the hydrophilic layer absorbs water, the hydrophilic layer swells such that the structural color changes.