| 摘要 |
PURPOSE: A film for preventing counterfeit is provided to prevent the duplication of patterns for checking authenticity. CONSTITUTION: A film for preventing counterfeit(100) comprises: a pattern for checking authenticity(110) formed on the film for preventing counterfeit; and a cover film(120), which is on the film for preventing counterfeit, surrounding the pattern for checking authenticity. The refractive index of the film for preventing counterfeit and the cover film are different each other. |
