Decorative member

Patent metadata

Field	Value
Publication number	US-11639045-B2
Application number	US-201816772196-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Dec 15, 2017
Publication date	May 2, 2023
Grant date	May 2, 2023

Abstract

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. The light absorbing layer includes a copper oxynitride (Cu a O b N c ).

First claim

The invention claimed is:

1. A decorative member 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 light absorbing layer includes a copper oxynitride (Cu a O b N c ); and
wherein, when a component analysis is performed through a transmission X-ray analysis on any one point of the light absorbing layer, ω represented by following Equation 1 is greater than or equal to 0.02 and less than or equal to 0.7:
ω=( T x )×(σ x )  [Equation 1]

wherein in Equation 1, T x is represented by Equation 2, with the proviso that T x is 1 when T 1 is m*T 0 , wherein m is integer of 1 or greater, and σ x is represented by Equation 3:

Tx
=

{

T
1

-

[

T
1

T
0

]

×

T
0

}

×

(

T
0

)

-
1

[

Equation
⁢

⁢
2

]

σ
x

=

10
⁢
b

a
-

3
⁢

⁢
c

.

[

Equation
⁢

⁢
3

]

wherein in Equation 2, T 1 (nm) is a thickness of the light absorbing layer at the any one point of the light absorbing layer on which the component analysis is performed,

[

T
1

T
0

]

is a maximum integer that is not greater than

T
1

T
0

,

and T 0 is 70 nm;
and
wherein in Equation 3, “a” is an element content ratio of copper (Cu), “b” is an element content ratio of oxygen (O), and “c” is an element content ratio of nitrogen (N).

2. The decorative member of claim 1 , wherein Tx is greater than or equal to 0.01 and less than or equal to 0.5.

3. The decorative member of claim 1 , wherein σ x is greater than or equal to 1.1 and less than or equal to 1.9.

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 0° to 150° and 315° to 360°.

5. The decorative member 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), 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 comprises two or more points with different thicknesses.

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

10. The decorative member of claim 1 , wherein the substrate comprises a pattern layer, and the pattern layer is provided adjacent to the color developing layer.

11. The decorative member of claim 10 , wherein the pattern layer comprises a convex portion or a concave portion having an asymmetric-structured cross-section.

12. The decorative member of claim 1 , which has dichroism of ΔE*ab>1, wherein (ΔE * ab) is a distance in a L*a*b* space in a color coordinate CIE L*a*b*, L* is a distance from L axis and a* and b* are Cartesian coordinates.

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

14. The decorative member of claim 13 , wherein the plastic injection molded article comprises one or more 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), polycarbonate (PC), polyamide and a styrene-a

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• B29C45/0053 Primary

  combined with a final operation, e.g. shaping (injection-compression moulding B29C45/561) · CPC title

• A45D2034/007

  with special decorative arrangements or form · CPC title

• B44F1/045

  having mirrors or metallic or reflective layers at the back side · CPC title

• C03C17/245

  by deposition from the vapour phase · CPC title

• C23C14/0036

  Reactive sputtering · CPC title