Decorative member

Patent metadata

Field	Value
Publication number	US-12075898-B2
Application number	US-201916969095-A
Country	US
Kind code	B2
Filing date	Apr 10, 2019
Priority date	Apr 10, 2018
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

The present application relates to a decorative member 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 one surface of the color developing layer, wherein the light absorbing layer includes a copper oxide (CuaOx).

First claim

The invention claimed is:

1. A decorative member comprising:
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 one surface of the color developing layer, wherein the light absorbing layer includes a copper oxide (Cu a O x ); and
ω of the light absorbing layer, represented by the following Equation 1 is greater than or equal to 0.61 and less than or equal to 1.2 when conducting a component analysis on any one point of the light absorbing layer:

ω
=

(

T
x

)

×

(

σ
x

)

[

Equation
⁢

⁢
1

]

f
⁡

(

T
1

)

=

T
1

T
0

⁢

(

0
<

T
1

≤

T
0

)

⁢

⁢

f
⁡

(

T
1

)

=

f
⁡

(

T
1

+

n
×

T
0

)

[

Equation
⁢

⁢
2

]

σ
x

=

x
a

[

Equation
⁢

⁢
3

]

in Equation 1, T x is a T 1 -dependent function value of a function represented by f(T 1 ), n is a positive integer of 1 or greater, and σ x is represented by Equation 3;
in Equation 2, T 1 is a thickness of the light absorbing layer including the any one point of the light absorbing layer on which the component analysis is conducted, and T 0 is 60 nm; and
in Equation 3, a means the number of copper (Cu) atoms, and x means of the number of oxygen (O) atoms, in the Cu a O x compound,
wherein the substrate includes a pattern layer, and the pattern layer includes a convex portion or concave portion shape having an asymmetric cross-section.

2. The decorative member of claim 1 , wherein Tx is greater than or equal to 0.51 and less than or equal to 1.

3. The decorative member of claim 1 , wherein σ x is greater than or equal to 0.1 and less than or equal to 3.

4. The decorative member of claim 1 , wherein a hue-angle h* in CIE Lch color space of the light absorbing layer is in a range of 105° to 315°.

5. The decorative member of claim 1 , wherein the light reflective layer is a single layer or a multilayer including one, two or more types of materials selected from the group consisting of one, two or more types of materials selected from among 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.

6. The decorative member of claim 1 , wherein the light absorbing layer has a refractive index of 0 to 8 at a wavelength of 400 nm.

7. The decorative member 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.

8. The decorative member of claim 1 , wherein the light absorbing layer includes two or more points with different thicknesses.

9. The decorative member of claim 1 , wherein the color developing layer further includes a color film.

10. The decorative member of claim 1 , which has dichroism of ΔE*ab>1.

11. The decorative member of claim 1 , wherein the substrate includes a plastic injection mold or a glass substrate for a cosmetic container.

12. The decorative member of claim 11 , where

Assignees

• Lg Chemical Ltd

Inventors

• Kim Yong Chan
• Kim Ki Hwan
• Heo Nansra
• Shon Jeong Woo
• Jo Pilsung

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