Decorative member

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 (AlaObNc),
• 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, Tx is represented by Equation 2, and σx represented by Equation 3 is greater than or equal to 1.2 and less than or equal to 1.7;
• wherein in Equation 2, T1 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 T0 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 T1 is m*T0, Tx is 1 and when T1 is not m*T0, Tx 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.