Patent ID: 11867902
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  B  F | IPC B  F  G

Claim 1:
2. The display device according to claim 1 that satisfies following Equations in a case where
a refractive index of the light guide panel is n,
an inclination angle of the first reflective surface with respect to the incident surface is β,
a thickness of the light guide panel in the facing direction at the incident surface is t1,
a thickness of the light guide panel in the facing direction at the first reflective surface is t2,
a thickness of the light guide panel at a position corresponding to a center in the orthogonal direction of the display panel is t3,
a length of the light guide panel in the orthogonal direction is L1, and
a distance between a position of the light guide panel corresponding to a center in the orthogonal direction of the display panel and the first reflective surface is L2, θ
          1
        
        =
        
          90
          -
          α
          -
          
            2
            ⁢
            β
          
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          1
        
        ]
      
    
  
  
    
      
        
          θ
          2
        
        =
        
          
            sin
            
              -
              1
            
          
          ⁢
          
            1
            n
          
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          2
        
        ]
      
    
  
  
    
      
        β
        <
        
          
            4
            ⁢
            5
          
          -
          
            α
            2
          
          -
          
            
              θ
              2
            
            2
          
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          3
        
        ]
      
    
  
  
    
      
        
          
            
              
                t
                1
              
              +
              
                t
                2
              
            
            2
          
          ×
          tan
          ⁢
          
            
              
                θ
                1
              
              +
              
                θ
                2
              
            
            2
          
          ×
          
            
              
                θ
                1
              
              -
              
                θ
                2
              
            
            α
          
        
        <
        
          L
          1
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          4
        
        ]
      
    
  
  
    
      
        
          
            1
            2
          
          ×
          
            L
            2
          
        
        <
        
          
            
              
                t
                2
              
              +
              
                t
                3
              
            
            2
          
          ×
          tan
          ⁢
          
            
              
                θ
                1
              
              +
              
                θ
                2
              
            
            2
          
          ×
          
            
              
                θ
                1
              
              -
              
                θ
                2
              
            
            α
          
        
        <
        
          
            3
            2
          
          ×
          
            
              L
              2
            
            .
          
        
      
    
    
      
        [
        
          Equation
          ⁢
          
            
          
          ⁢
          5
        
        ]