US 11,940,636 B2
Decoration member
Yong Chan Kim, Daejeon (KR); Ki Hwan Kim, Daejeon (KR); Nansra Heo, Daejeon (KR); Jeong Woo Shon, Daejeon (KR); and Pilsung Jo, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 16/966,167
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jun. 14, 2019, PCT No. PCT/KR2019/007240
§ 371(c)(1), (2) Date Jul. 30, 2020,
PCT Pub. No. WO2019/240552, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 10-2018-0069234 (KR), filed on Jun. 15, 2018; and application No. 10-2018-0132090 (KR), filed on Oct. 31, 2018.
Prior Publication US 2021/0037947 A1, Feb. 11, 2021
Int. Cl. G02B 5/04 (2006.01); B32B 15/20 (2006.01); C03C 17/245 (2006.01); C08J 7/04 (2020.01); C23C 14/00 (2006.01); G02B 5/00 (2006.01); G02B 5/26 (2006.01); G02B 5/28 (2006.01); A45D 33/18 (2006.01); A45D 34/00 (2006.01); A45D 40/00 (2006.01); B29C 45/26 (2006.01); B32B 15/082 (2006.01)
CPC G02B 5/045 (2013.01) [B32B 15/20 (2013.01); C03C 17/245 (2013.01); C08J 7/0423 (2020.01); C23C 14/0036 (2013.01); G02B 5/003 (2013.01); G02B 5/26 (2013.01); G02B 5/285 (2013.01); A45D 33/18 (2013.01); A45D 34/00 (2013.01); A45D 2034/007 (2013.01); A45D 40/00 (2013.01); A45D 2040/0012 (2013.01); B29C 45/26 (2013.01); B29K 2901/12 (2013.01); B29K 2995/002 (2013.01); B32B 15/082 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/416 (2013.01); B32B 2311/04 (2013.01); B32B 2311/08 (2013.01); B32B 2311/18 (2013.01); B32B 2311/22 (2013.01); B32B 2311/24 (2013.01); B32B 2439/00 (2013.01); C03C 2217/72 (2013.01); C03C 2218/155 (2013.01); C08J 2367/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A decoration member comprising:
a color expression layer comprising a light reflection layer and a light absorption layer provided on the light reflection layer; and
a substrate provided on one surface of the color expression layer,
wherein the light absorption layer comprises a copper nickel oxide (CuaNibOx), and ω represented by Equation 1 is in a range of 0.001 to 0.7 when a component analysis is performed with respect to any one point of the light absorption layer:

OG Complex Work Unit Math
wherein, in Equations 1 and 2, Tx represents a function value depending on T1 of a function represented by the f(T1), which is a ratio of a thickness of the light absorption layer comprising the any one point in which the component analysis is performed (T1) to a predetermined period T0 of the thickness of the light absorption layer, n represents a positive integer of 1 or more, and σx is represented by Equation 3,
wherein, in Equation 2, T0 is 60 nm, and
wherein, in Equation 3, a means an element content ratio of copper (Cu), b means an element content ratio of nickel (Ni), and x means an element content ratio of oxygen (O).