公开(公告)号：US10532596B2

公开(公告)日：2020-01-14

申请号：US15698913

申请日：2017-09-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyungduk Ko ,  Kisun Park ,  Ho Seong Jang ,  Il Ki Han

IPC: B41M3/14 ,  B42D25/328 ,  G09F3/00 ,  B42D25/47 ,  B42D25/382 ,  B42D25/42 ,  B42D25/373 ,  G07D7/12 ,  G07D7/005 ,  G09F3/02

Abstract: A plasmonic structure having an identifier pattern indicating a genuine product for preventing counterfeiting, falsification or reuse, includes a metal layer; a photoconversion pattern layer including a plurality of photoconverting nanoparticles disposed in a pattern on and in direct contact with the metal layer; a metal pattern layer including a plurality of metal particles disposed in a pattern on and in direct contact with the photoconversion pattern layer; and an adhesive film disposed on the metal pattern layer. An identifier pattern indicating a genuine product is easily identified even by visual inspection after irradiation with infrared light irradiation. The plasmonic structure is fundamentally impossible to re-assemble after deformation of the plasmonic structure caused by disassembly of a product or packaging container, thereby preventing counterfeiting, falsification or reuse.