Patent ID: 11970613
Assignee: SK MICROWORKS CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 10:
11. The polymer film of claim 7, which has a ΔHZ24 value represented by the following Equation 1a of 500% or less, a ΔYI24 value represented by the following Equation 2a of 30% or less, and a ΔRo24 value represented by the following Equation 3a of 8% or less:, Δ
          ⁢
          
            
          
          ⁢
          
            
              HZ
              24
            
            ⁡
            
              (
              %
              )
            
          
        
        =
        
          
            
              
              
                
                  HZ
                  
                    2
                    ⁢
                    4
                  
                
                -
                
                  HZ
                  0
                
              
              
            
            
              H
              ⁢
              
                Z
                0
              
            
          
          ×
          100
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          1
          ⁢
          a
        
        ]
      
    
  
  
    
      
        
          Δ
          ⁢
          
            
          
          ⁢
          
            
              YI
              24
            
            ⁡
            
              (
              %
              )
            
          
        
        =
        
          
            
              
              
                
                  YI
                  
                    2
                    ⁢
                    4
                  
                
                -
                
                  YI
                  0
                
              
              
            
            
              YI
              0
            
          
          ×
          100
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          2
          ⁢
          a
        
        ]
      
    
  
  
    
      
        
          Δ
          ⁢
          
            
          
          ⁢
          
            
              Ro
              24
            
            ⁡
            
              (
              %
              )
            
          
        
        =
        
          
            
              
              
                
                  Ro
                  24
                
                -
                
                  Ro
                  0
                
              
              
            
            
              Ro
              0
            
          
          ×
          100
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          3
          ⁢
          a
        
        ]
      
    
  

wherein in Equations 1a, 2a, and 3a,
HZ0 refers to the haze before the film is treated in an autoclave,
HZ24 refers to the haze after the film is treated in an autoclave,
YI0 refers to the yellow index before the film is treated in an autoclave,
YI24 refers to the yellow index after the film is treated in an autoclave,
Ro0 refers to the in-plane retardation before the film is treated in an autoclave,
Ro24 refers to the in-plane retardation after the film is treated in an autoclave, and
the autoclave treatment means that an autoclave is filled with water and a film is treated therein at a temperature of 120° C. and a pressure of 1.2 atm for 24 hours.