JP2017021333A5 - - Google Patents

Claims (14)

A reflective core layer;
A semiconductor absorber layer extending over the reflective core layer; and a high refractive index dielectric layer extending over the semiconductor absorber layer ;
Comprising a multilayer laminate having,
The high refractive index dielectric layer has a thickness D according to the relational expression 0.1QW <D ≦ 4QW, QW is a quarter wavelength thickness with respect to a target wavelength, and the target wavelength is a ^* b ^* Has a default hue in the range of 0-40 ° on the Lab color map,
The multi-layer stack, the reflecting single band of visible light having a predetermined color between a ^* b ^* Lab color map on a 0 to 40 °, a single band of the visible light, the multilayer When viewed from all angles between 0 to 45 degrees perpendicular to the outer surface of the laminate, a hue shift of 0 to 40 degrees within the predetermined hue range on the a ^* b ^* Lab color map Have
Omni-directional high-saturation red structural color pigment . The omnidirectional high saturation according to claim 1, wherein, on the a ^* b ^* Lab color map, the hue is between 10 and 30 degrees, and the hue shift is in the range of 10 to 30 degrees. Red structural color pigment . The omnidirectional high-saturation red structural color pigment according to claim 1 or 2, wherein the reflective core layer has a thickness of between 50 and 200 nanometers. The omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 3, wherein the reflective core layer is made of at least one of a reflective metal and a colored metal. The omnidirectional high-saturation red structural color pigment according to claim 4, wherein the reflective metal is at least one of Al, Ag, Pt, Sn, Cr, and combinations thereof. The omnidirectional high-saturation red structural color pigment according to claim 4 , wherein the colored metal is at least one of Au, Cu, brass, bronze, and combinations thereof. The omnidirectional high chroma red structural color pigment according to any one of claims 1 to 6, wherein the semiconductor absorber layer has a thickness of between 5 and 500 nanometers. The omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 7, wherein the semiconductor absorber layer is made of at least one of amorphous Si, Ge, and combinations thereof. The high refractive index dielectric layer is made of ZnS, TiO. ₂ , HfO ₂ , Nb ₂ O _Five , Ta ₂ O _Five And an omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 8, made from a dielectric material selected from the group consisting of: The reflective core layer is a central reflective core layer, and the semiconductor absorber layer is a pair of semiconductor absorber layers extending across both sides of the central reflective core layer, and the central reflective layer The omnidirectional high saturation red structural color pigment according to any one of claims 1 to 9, wherein a core layer is sandwiched between the pair of semiconductor absorber layers. The high refractive index dielectric layer is a pair of high refractive index dielectric layers, and the central reflective core layer and the pair of semiconductor absorber layers are between the pair of high refractive index dielectric layers. The omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 10, being sandwiched between two. The omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 11, wherein the reflective core layer is a dry deposition layer. The omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 12, wherein the pair of semiconductor absorber layers are dry deposition layers. The omnidirectional high-saturation red structural color pigment according to any one of claims 1 to 13, wherein the pair of high-refractive-index dielectric layers are wet-deposited layers.