Invention Grant
- Patent Title: Photonic crystal film, method for manufacturing same, and anti-forgery article comprising same
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Application No.: US16606452Application Date: 2018-04-18
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Publication No.: US11541680B2Publication Date: 2023-01-03
- Inventor: Shin-hyun Kim , Gun Ho Lee , Won Gyun Choe , Soo Dong Kim , Ju Hee Kang , Hong Keon Kim , Hyun Soo Kim , E Den Kim
- Applicant: KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.
- Applicant Address: KR Daejeon
- Assignee: KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.
- Current Assignee: KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.
- Current Assignee Address: KR Daejeon
- Agency: Knobbe, Martens, Olson & Bear LLP
- Priority: KR10-2017-0049740 20170418,KR10-2017-0061447 20170518
- International Application: PCT/KR2018/004514 WO 20180418
- International Announcement: WO2018/194374 WO 20181025
- Main IPC: B42D25/36
- IPC: B42D25/36 ; B29D7/01 ; G02B1/00 ; G02B1/04 ; B42D25/29 ; B32B27/18 ; C08J5/18
Abstract:
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.
Public/Granted literature
- US20210107311A1 PHOTONIC CRYSTAL FILM, METHOD FOR MANUFACTURING SAME, AND ANTI-FORGERY ARTICLE COMPRISING SAME Public/Granted day:2021-04-15
Information query
