Patent ID: 11917867
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 12:
13. The display device according to claim 12, wherein distances H between the light emitting layers of the plurality of sub-pixel-units and the corresponding lens units are:

H=n′×f 

where n′ is an equivalent refractive index of a medium between the light emitting layer and the corresponding lens unit; f is a focal length of the lens unit, and f satisfies:, 1
    f
  
  =
  
    
      (
      
        n
        -
        1
      
      )
    
    ⁡
    
      [
      
        
          1
          
            R
            ⁢
            
              
            
            ⁢
            1
          
        
        -
        
          1
          
            R
            ⁢
            
              
            
            ⁢
            2
          
        
        +
        
          
            
              (
              
                n
                -
                1
              
              )
            
            ⁢
            d
          
          
            
              n
              ·
              R
            
            ⁢
            
              
            
            ⁢
            
              1
              ·
              R
            
            ⁢
            
              
            
            ⁢
            2
          
        
      
      ]
    
  

where n is a refractive index of the lens unit, R1 and R2 are radii of curvature of two curved surfaces of the lens unit, respectively, d is a thickness of the lens unit.