| 摘要 |
The present invention relates to a security film comprising: a substrate layer; a nano-wire grid polarization layer comprising a linear grid pattern; and at least one information identifying layer, wherein the substrate layer, the nano-wire grid polarization layer and the information identifying layer are stacked so that the at least one information identifying layer is located in at least one position from among an outer side surface contacting the substrate layer, an inner side surface between the substrate layer and the nano-wire grid polarization layer, and an outer side surface contacting the nano-wire grid polarization layer. The present invention can provide a high-level information storage medium by combining a nano-wire grid polarization film produced by a nano imprinting method with various security elements, so that it is possible to enhance security against illegal counterfeiting and copying. |
