| abstract |
The present invention relates to a method for manufacturing a security device including a colloidal crystal that is excellent in visibility and easy to manufacture. The security device manufacturing method of the present invention comprises the steps of supplying a substrate having a plurality of grooves formed on at least one surface, injecting a colloidal dispersion such that a colloidal dispersion is located in a groove of the substrate, and after aging the colloidal dispersion. And supplying a film to attach an aging film to at least one surface on which the groove is formed, and curing the colloidal dispersion. The security device of the present invention is excellent in security and visibility, and can be used in securities, credit cards, security cards, anti-counterfeiting products, and the like. |