SECURITY FILM

• Main Authors: KIM, Jin Young, KIM, Kyung Jong, KIM, Chong Won, NAM, Si Wook
• Format: Patent
• Language: English; French; German
• Published: 02.05.2018
• Subjects: BOOK COVERS; BOOKBINDING; CINEMATOGRAPHY; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTROGRAPHY; FILES; FREQUENCY-CHANGING; HOLOGRAPHIC PROCESSES OR APPARATUS; HOLOGRAPHY; LOOSE LEAVES; MOVABLE-STRIP WRITING OR READING APPARATUS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; SPECIAL PRINTED MATTER; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

Disclosed is a security film, including: a substrate layer, a nano-wire grid polarizer layer having a line grid pattern, and at least one information identification layer, wherein the substrate layer, the nano-wire grid polarizer layer and the information identification layer are stacked so that at least one information identification layer is provided in at least one position selected from among a position on an outer surface of the substrate layer, a position between the substrate layer and the nano-wire grid polarizer layer, and a position on an outer surface of the nano-wire grid polarizer layer. This invention can provide a high-dimensional information storage medium by combining a nano-wire grid polarization film, manufactured via a nano-imprinting process, with various security elements, making it possible to enhance security against illegal counterfeiting and copying.