Decorative member
A decoration element including: a color developing layer including a light reflective layer and a light absorbing layer provided on the light reflective layer; and a substrate provided on a surface of the color developing layer. The substrate comprises a pattern layer, and the light absorbing layer comprises an aluminum oxynitride (Al a O b N c ).
1. A decoration element comprising:
a color developing layer comprising a light reflective layer and a light absorbing layer provided on the light reflective layer; and
a substrate provided on a surface of the color developing layer,
wherein the substrate comprises a pattern layer,
wherein the light absorbing layer comprises an aluminum oxynitride (Al a O b N c ),
wherein the light absorbing layer comprises two or more points with different thicknesses,
wherein the pattern layer comprises a convex portion having an asymmetric structured cross-section,
wherein the convex portion comprises a first inclined side and a second inclined side,
wherein a difference between an inclined angle of the first inclined side and an inclined angle of the second inclined side is in a range of 30° to 70°, and an angle formed by the first inclined side and the second inclined side is in a range of 80° to 100°,
wherein the convex portion shape on the pattern layer surface is a cone-shaped, when observing the cone-shaped convex portion from a surface side of the convex portion shape, having two or less identical shapes present when rotating 360 degrees based on the vertex of the cone, and
wherein, when a transmission X-ray analysis is performed on an any one point of the light absorbing layer, ω represented by the following Equation 1 is greater than or equal to 0.81 and less than or equal to 1.8:
ω
=
(
T
x
)
×
(
σ
x
)
[
Equation
1
]
Tx
=
{
T
1
-
[
T
1
T
0
]
×
T
0
}
×
(
T
0
)
-
1
[
Equation
2
]
σ
x
=
3
a
2
b
+
3
c
[
Equation
3
]
wherein in Equation 1, T x is represented by Equation 2, and σ x represented by Equation 3 is greater than or equal to 1.2 and less than or equal to 1.7;
wherein in Equation 2, T 1 is a thickness of the light absorbing layer comprising the any one point of the light absorbing layer on which the transmission X-ray analysis is performed T 0 is 100 nm, and
[
T
1
T
0
]
is a maximum integer that is not greater than
T
1
T
0
,
with the proviso that when T 1 is m*T 0 , T x is 1 and when T 1 is not m*T 0 , T x satisfies Equation 2, and m is an integer of 1 or greater; and
wherein in Equation 3, a is an element content ratio of aluminum (Al), b is an element content ratio of Oxygen (O), and c means an element content ratio of nitrogen (N), wherein the element content ratio is an atomic percent (at %) of an element at the any one point of the light absorbing layer on which the component analysis is performed.
2. The decoration element of claim 1 , wherein T x is greater than or equal to 0.51 and less than or equal to 1.
3. The decoration element of claim 1 , wherein a hue-angle h* in CIE LCh color space of the light absorbing layer ranges from 105° to 315°.
4. The decoration element of claim 1 , wherein the light reflective layer is a single layer or a multilayer comprising one, or more materials selected from the group consisting of indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni), vanadium (V), tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nd), iron (Fe), chromium (Cr), cobalt (Co), gold (Au) and silver (Ag), oxides thereof, nitrides thereof, oxynitrides thereof, carbon and carbon composites.
5. The decoration element of claim 1 , wherein the light absorbing layer has a refractive index of 0 to 8 at a wavelength of 400 nm.
6. The decoration element of claim 1 , wherein the light absorbing layer has an extinction coefficient of greater than 0 and less than or equal to 4 at a wavelength of 400 nm.
7. The decoration element of claim 1 , wherein the color developing layer further comprises a color film.
8. The decoration element of claim 1 , wherein the light absorbing layer has dichroism,
wherein the dichroism is represented by a color difference ΔE*ab of the color developing layer,
wherein the color difference ΔE*ab is greater than 1, and
wherein the color difference ΔE*ab is a difference in color coordinates L*a*b* in a color coordinate CIE L*a*b* of the color developing layer.
9. The decoration element of claim 1 , wherein the substrate comprises a plastic injection molded article or a glass substrate.
10. The decoration element of claim 9 , wherein the plastic injection molded article comprises one or more materials selected from the group consisting of polypropylene (PP), polystyrene (PS), polyvinyl acetate (PVAc), polyacrylate, polyethylene terephthalate (PET), polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), an ethylene-vinyl acetate copolymer (EVA), a polycarbonate (PC), a polyamide and a styrene-acrylonitrile copolymer.
11. The decoration element of claim 4 , wherein the light reflective layer comprises a material selected from the group consisting of indium (In) and tin (Sn).