Patent ID: 11889910
Assignee: LG CHEM, LTD.
Field: Other consumer goods (Other fields)
Classification: CPC C  G  B  A | IPC A  B  C  G

Claim 0:
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 0.71 to 3, when a component analysis is performed with respect to any one point of the light absorption layer:, ω
     =
     
      
       (
       
        T
        x
       
       )
      
      ×
      
       (
       
        σ
        x
       
       )
      
     
    
   
   
    
     [
     
      Equation
      ⁢
         
      1
     
     ]
    
   
  
 

 
  
   
    
     
      f
      ⁡
      (
      
       T
       1
      
      )
     
     =
     
      
       
        T
        1
       
       
        T
        0
       
      
      ⁢
      
       (
       
        0
        <
        
         T
         1
        
        ≤
        
         T
         0
        
       
       )
      
     
    
   
   
    
     [
     
      Equation
      ⁢
         
      2
     
     ]
    
   
  
 

 
  
   
    
     
      f
      ⁡
      (
      
       T
       1
      
      )
     
     =
     
      f
      ⁡
      (
      
       
        T
        1
       
       +
       
        n
        ×
        
         T
         0
        
       
      
      )
     
    
   
   
     
   
  
 

 
  
   
    
     
      σ
      x
     
     =
     
      
       
        a
        +
        b
       
       x
      
      ×
      1.2
     
    
   
   
    
     [
     
      Equation
      ⁢
         
      3
     
     ]
    
   
  
 

wherein in Equation 1, Tx represents a function value depending on T1 of a function represented by the f(T1), n represents a positive integer of 1 or more, and σx is represented by Equation 3,
wherein in Equation 2, T1 represents a thickness of the light absorption layer comprising any one point of the light absorption layer in which the component analysis is performed and T0 is 60 nm, and
wherein in Equation 3, the 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).