Patent ID: 11940636
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 0.001 to 0.7 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
                
              
              )
            
          
        
        ⁢
        
          

        
        ⁢
        
          
            f
            ⁡
            
              (
              
                T
                1
              
              )
            
          
          =
          
            f
            ⁡
            
              (
              
                
                  T
                  1
                
                +
                
                  n
                  ×
                  
                    T
                    0
                  
                
              
              )
            
          
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          2
        
        ]
      
    
  
  
    
      
        
          σ
          x
        
        =
        
          
            
              a
              +
              b
            
            x
          
          ×
          1.2
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          3
        
        ]
      
    
  

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).