Decoration member

Patent metadata

Field	Value
Publication number	US-11932001-B2
Application number	US-201916981110-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Jun 15, 2018
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

This specification relates to a decoration member including: a substrate; and a decoration layer provided on the substrate in which there are one or more combinations of viewing angles θ and φ in which a contrast parameter Cn represented by Equation 1 is 0.1 or more.

First claim

The invention claimed is:

1. A decoration member comprising:
a substrate; and
a decoration layer provided on the substrate,
wherein a brightness value L* on a CIE L*ab color coordinate is measured with respect to one point A1 on a circumference of any circle on the surface of the decoration layer by using a detector positioned at a (r, θ, φ) location of a spatial coordinate system having a center point of the surface of the decoration layer as an original point under a standard light source condition of D65 at a wavelength of 380 nm≤λ≤780 nm,
the spatial coordinate system includes an x axis in any one direction on the surface of the decoration layer, a y axis in another direction on the surface of the decoration layer perpendicular to the x axis, and a z axis in a normal direction to the surface of the decoration layer,
when a graph having an angle a formed between a straight line linking one point A1 on the circumference of the any circle and a center A0 of the any circle and a positive direction of the x axis as a horizontal axis and the measured brightness value L* as a vertical axis is graph G1,
in a range in which α of the graph G1 is 0 to 360°, the number n of consecutive intervals in which a length of the horizontal axis satisfying Equation A below is equal to or larger than 10° is 2 or more, and
there are one or more combinations of θ and φ in which a contrast parameter C n represented by Equation 1 below is equal to or more than 0.1:

C
n

=

∑

i
=
1

n
-
1

4
×

(

M
i

-

M

i
+
1

M
i

+

M

i
+
1

)

2

+

4
⁢

δ
n

×

(

M
n

-

M
1

M
n

+

M
1

)

2

[

Equation
⁢

1

]

❘
"\[LeftBracketingBar]"

dL
(
α
)

d
⁢
α

❘
"\[RightBracketingBar]"

×

{

L
⁡
(
α
)

}

-
1

≤
0.001

[

Equation
⁢

A

]

M
i

=

∫

α

i
⁢
1

α

i
⁢
2

Assignees

• Lg Chemical Ltd

Inventors

• Song Jin Suk
• Kim Jungdoo
• Han Sangcholl
• Jang Song Ho
• Kim Ki Hwan
• Jo Pilsung

Classifications

• A45C11/002

  for storing portable handheld communication devices, e.g. pagers or smart phones · CPC title

• B32B7/023 Primary

  Optical properties · CPC title

• A45C11/00

  Receptacles for purposes not provided for in groups A45C1/00-A45C9/00 (specially adapted for toiletry or cosmetic equipment A45D29/20, A45D44/18; travelling sewing kits A45F3/48) · CPC title

• A45D33/18

  with special decorative arrangements or form · CPC title

• A45D34/00

  Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes · CPC title