OPTICAL STRUCTURE, MANUFACTURING METHOD THEREOF, AND CODE FORMING METHOD

    公开(公告)号:US20240330635A1

    公开(公告)日:2024-10-03

    申请号:US18671406

    申请日:2024-05-22

    IPC分类号: G06K19/06 B42D25/23

    摘要: There is provided an optical structure that can form a code that is difficult to counterfeit and compatibly has both a high readability and a fine appearance. The optical structure of the present invention includes a reflecting layer having regular reflectivity, and a print layer stacked on at least a part of the reflecting layer, the print layer functioning as a scattering reflector having scattering reflectivity, wherein an image part, which is recognizable when viewed from a stack direction, is formed on the print layer, and the image part includes a pale-color level area that is printed, and a non-pale-color level area interposed between the pale-color level areas.

    Method for electrochemical metallization of a double-sided electrical circuit for a smart card and electrical circuit produced using said method

    公开(公告)号:US12106168B2

    公开(公告)日:2024-10-01

    申请号:US17926158

    申请日:2021-05-18

    申请人: Linxens Holding

    IPC分类号: G06K19/06 G06K19/077

    CPC分类号: G06K19/07722 G06K19/07773

    摘要: Method for the electrochemical metallization of a double-sided electrical circuit for a chip card. Contacts and current leads are located on a front face. An antenna and connection pads are located on a rear face. This method includes an operation of electrochemically depositing at least one layer of electrically conductive material on connection pads, while supplying these connection pads with current via the current leads, contacts and metallized holes establishing electrical continuity between the front face and the rear face. This method furthermore includes, after the operation of electrochemically depositing at least one layer of electrically conductive material, an operation of electrically isolating at least one metallized hole from a connection pad. Electrical circuit obtained using this method.