| 摘要 |
Provided is a structure of a security film for display which comprises: a first pattern part having a pattern consecutively arranged in parallel each other, wherein a pattern having a cross-sectional shaped of a right triangle forms an image in the upward direction; and a second pattern part having a pattern consecutively arranged in parallel each other wherein a pattern having a cross-sectional shaped of a right triangle forms an image in the downward direction that is symmetrical to the pattern of the first pattern part. The patterns of the first pattern part and the second pattern part are adhered closely each other, and the first pattern part and the second pattern part have different refractive indexes respectively. |
