Decoration member and decoration member manufacturing method

Patent metadata

Field	Value
Publication number	US-12379531-B2
Application number	US-201917054870-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Jun 15, 2018
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

The present specification relates to a decorative member comprising a base and inorganic layers comprising a first light absorption layer, a light reflection layer, and a second light absorption layer sequentially provided on the base, in which ΔE 12 indicated in Equation 1 is 1 or more, and a method of manufacturing the decorative member.

First claim

The invention claimed is:

1. A decorative member comprising:
a base;
a pattern layer provided on the base; and
inorganic layers comprising a first light absorption layer, a light reflection layer, and a second light absorption layer sequentially provided on the pattern layer, thereby defining a first interface between the first light absorption layer and the light reflection layer, and a second interface between the second light absorption layer and the light reflection layer,
wherein each of the first light absorption layer and the second light absorption layer independently is a single-layered structure comprising one material or two or more materials selected from a group consisting of: indium (In), silicon (Si), tantalum (Ta),

wherein the pattern layer comprises a convex portion or a concave portion shape having a cross section with an asymmetric structure,
wherein the pattern layer comprises thermosetting resin or ultraviolet curable resin,
wherein ΔE 12 indicated in the following Equation 1 is 1 or more, and
wherein in Equation 1, L 1 *, a 1 *, and b 1 * are coordinate values of CIE lightness (L 1 *) and chromaticity (a 1 *, b 1 *) of the first light absorption layer, and L 2 *, a 2 * and b 2 * are coordinate values of CIE lightness (L 2 *) and chromaticity (a 2 *, b 2 *) of the second light absorption layer,

Δ
⁢

E

1
⁢
2

=

(

L
1
*

-

L
2
*

)

2

+

(

a
1
*

-

a
2
*

)

2

+

(

b
1
*

-

b
2
*

)

2

[

Equation
⁢

1

]

wherein a ratio of a thickness of the first light absorption layer and a thickness of the second light absorption layer is 1:1.1 to 1:10.

2. The decorative member of claim 1 , wherein (L 1 *):(L 2 *) is 1.1:1 to 5:1.

3. The decorative member of claim 1 , wherein (a 1 *) 2 +(b 1 *) 2 :(a 2 *) 2 +(b 2 *) 2 is 2:1 to 200:1.

4. The decorative member of claim 1 , wherein CIE lightness (L 1 *) of the first light absorption layer is 0 or more and 100 or less, and (a 1 *) 2 +(b 1 *) 2 is 300 or more and 28,000 or less.

5. The decorative member of claim 1 , wherein CIE lightness (L 2 *) of the second light absorption layer is 0 or more and 100 or less, and (a 2 *) 2 +(b 2 *) 2 is 10 or more and 28,000 or less.

6. The decorative member of claim 1 , wherein the light reflection layer has a single-layered structure or a multilayer structure comprising one material or two or more materials selected from a 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 (Nb), iron (Fe), chromium (Cr), cobalt (Co), gold (Au), and silver (Ag); an oxide thereof, a nitride thereof, an oxynitride thereof, carbon, and a carbon composite body.

7. The decorative member of claim 1 , wherein the thickness of the first light absorption layer and the thickness of the second light absorption layer are each 1 nm or more and 1000 nm or less.

8. The decorative member of claim 1 , further comprising:
a color film provided at any one or more of:
a portion between the base and the first light absorption layer;

a portion between the first light absorption layer and the light reflection layer;
a portion between the light reflection layer and the second light absorption layer; and
a surface of the second light absorption layer facing the light reflection layer.

9. The decorative member of claim 1 , wherein the base comprises a plastic injection-molded product or a glass base for a cosmetic container.

10. The decorative member of claim 9 , wherein the plastic injection-molded product comprises one or more of polypropylene (PP), polystyrene (PS), polyvinyl acetate (PVAc), polyacrylate, polyethylene terephthalate (PET), polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), ethylene-vinyl acetate copolymer (EVA), polycarbonate (PC), polyamide, and styrene-acrylonitrile copolymer.

11. A method of manufacturing the decorative member according to claim 1 , the method comprising:
preparing the base;
forming the pattern layer on the base; and
sequentially forming the first light absorption layer, the light reflection layer, and the second light absorption layer on the pattern layer,
wherein the pattern layer comprises a convex portion or a concave portion shape having a cross section with an asymmetric structure,
wherein ΔE 12 indicated in the following Equation 1 is 1 or more, and

Δ
⁢

E

1
⁢
2

=

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C23C14/0036

  Reactive sputtering · CPC title

• B32B2439/00

  Containers; Receptacles · CPC title

• B32B2311/24

  Aluminium · CPC title

• B32B2311/22

  Nickel or cobalt · CPC title

• B32B2311/18

  Titanium · CPC title