Radio frequency identification device

    公开(公告)号:US11995495B2

    公开(公告)日:2024-05-28

    申请号:US18175932

    申请日:2023-02-28

    发明人: Kai-Jun Liang

    IPC分类号: G06K19/077 H01Q1/22 H01Q9/04

    摘要: The present invention provides a RFID device arranged on an object surface, comprising a substrate, a first metal layer and a second metal layer. The first metal layer has a first connecting surface having a first adhering layer for adhering to the first surface of the substrate, wherein a RFID element is electrically connected to the first metal layer and a length of the first metal layer is larger than a length of the substrate such that the first metal layer has a first extending part extending outwardly from the lateral surface of the substrate. The second metal layer has a second connecting surface having a second adhering layer formed thereon for adhering the second metal layer on the second surface, wherein the first extending metal layer is attached onto but electrically insulated from the object surface or the second metal layer.

    RFID ENABLED METAL TRANSACTION CARDS
    8.
    发明公开

    公开(公告)号:US20230334281A1

    公开(公告)日:2023-10-19

    申请号:US18041909

    申请日:2021-04-01

    发明人: David Finn

    IPC分类号: G06K19/077 H01Q1/22 H01Q7/00

    摘要: A transaction card (smartcard) having a front “continuous” (with no slit) metal layer (ML, FML, 930, 1130) with an opening (912, 1112) for a dual-interface transponder chip module (TCM, 910, 1110) having a module antenna (MA, 911, 1111) on its bond side (not shown). A magnetic shielding layer (MSL, 942, 1142) comprising ferrite material disposed below the front face continuous metal layer. An amplifying element, booster antenna circuit (BAC, 944, 1144) disposed under the magnetic shielding layer. A rear discontinuous metal layer (ML, DML, 950, 1150) with a slit (S, 920, 1120) and a metal ledge (916, 1116) surrounding a module opening (MO, 914, 1114) to function as a coupling frame (CF). A rear plastic layer (960, 1160) formed of non-RF impeding material may capture a magnetic stripe and security elements (signature panel and hologram). A portion of the front face continuous metal layer may protrude downward into the magnetic shielding layer and booster antenna circuit layer. The rear discontinuous metal layer may have an additional slit to regulate the activation distance.