Security device using light reflection property
AssigneeKorea Minting, Security Printing & ID Card Operating Corp.
InventorsWon Gyun Choe, Su Dong Kim, Hong Keon Kim, Hyun Soo Kim, E Den Kim, Hye Jun Choi
Life of this patent
Estimating the term…
Abstract
The present invention relates to a security device comprising a colloidal crystal which exhibits excellent visibility and is also easily manufactured. The security device, according to the present invention, comprises: a substrate; a groove part formed on the substrate; a colloidal crystal positioned in the groove part; and an aging film. The security device, according to the present invention, exhibits excellent security and visibility, and thus may be used for securities, credit cards, security cards, anti-forgery products, etc.
Claims9
A security device using light reflection properties, the security device comprising:
- a substrate comprising groove portions in a surface of the substrate;
- a colloidal crystal contained in at least a portion of each of the groove portions;
- and
- an aging film covering at least a portion of the surface of the substrate containing the colloidal crystal,
- wherein a shape of the groove portions formed in an upper portion of the substrate is the same as that of the groove portions formed in a lower portion of the substrate.
Dependencies are inferred from the claim text.