| 摘要 |
PROBLEM TO BE SOLVED: To reduce the reflection factor over a wide wavelength range of light by forming a reflection preventive film of a specific number of layers on the air-side surface of a transparent substrate and also forming a reflection preventive film of a specific number of layers on the liquid-crystal backside of the transparent substrate. SOLUTION: The substrate 21 for the liquid crystal display device has on the air-11 side surface of the transparent substrate 12 the three-layered reflection preventive film formed of a surface-side 1st layer 1, a surface-side 2nd layer 2, and a surface-side 3id layer which are stack sequentially. On the backside of the transparent substrate 12 on the side of liquid crystal 13, the two-layered reflection preventive film is formed of a back side 1st layer 4 and a back side 2nd layer 5, which are transparent conductive films. Here, n0 <n3 <n1 <n2 , n0 .n1 <2> ≈n3 <2> .ns , n1 .d1 =n3 .d3 =λ/4, and n2 .d2 =λ/2, where n1 to n3 are the refractive indexes of the respective layers 1 to 3 of the reflection preventive film, d1 to d3 the layer thicknesses, ns and n0 the refractive indexes of the transparent substrate and air, and λ the center wavelength. |
