| 摘要 |
<p>There is provided a film for improving contrast, the film including a plurality of stripes each having a section in the shape of one of a trapezoid, a triangle, with a decreasing width from a surface of the film to an inner portion of the film, a rectangle, and a parallelogram, having a constant width from the surface of the film to the inner portion of the film. In a cross-sectional view cut along a thickness direction of the film, a line connecting an inner edge of an inner portion of one stripe with an inner edge of an outer portion of another adjacent stripe forms a shielding angle of 15 to 50° with a normal line perpendicular to a surface of the film.</p> |
