公开(公告)号：US11541680B2

公开(公告)日：2023-01-03

申请号：US16606452

申请日：2018-04-18

申请人： KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.

发明人： Shin-hyun Kim ,  Gun Ho Lee ,  Won Gyun Choe ,  Soo Dong Kim ,  Ju Hee Kang ,  Hong Keon Kim ,  Hyun Soo Kim ,  E Den Kim

IPC分类号： B42D25/36 ,  B29D7/01 ,  G02B1/00 ,  G02B1/04 ,  B42D25/29 ,  B32B27/18 ,  C08J5/18

摘要： A photonic crystal film, a method for manufacturing the photonic crystal film, and an anti-forgery article comprising the photonic crystal film are disclosed. The photonic crystal film includes a polyurethane-based polymer matrix and colloidal particles dispersed in the polyurethane-based polymer matrix and arranged in a crystal lattice structure. The colloidal particles includes one or more selected from metal nanoparticles, metal oxide nanoparticles, organic nanoparticles, and carbon structure nanoparticles.

公开(公告)号：US20210107311A1

公开(公告)日：2021-04-15

申请号：US16606452

申请日：2018-04-18

申请人： KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.

发明人： Shin-hyun Kim ,  Gun Ho Lee ,  Won Gyun; Choe ,  Su Dong Kim ,  Ju Hee Kang ,  Hong Keon Kim ,  Hyun Soo Kim ,  E Den Kim

IPC分类号： B42D25/29 ,  G02B1/00 ,  B29D7/01 ,  B32B27/18 ,  B42D25/36 ,  C08J5/18 ,  G02B1/04

摘要： A photonic crystal film, a method for manufacturing the photonic crystal film, and an anti-forgery article comprising the photonic crystal film are disclosed. The photonic crystal film includes a polyurethane-based polymer matrix and colloidal particles dispersed in the polyurethane-based polymer matrix and arranged in a crystal lattice structure. The colloidal particles includes one or more selected from metal nanoparticles, metal oxide nanoparticles, organic nanoparticles, and carbon structure nanoparticles.