THIN FLEXIBLE RADIO FREQUENCY TAGGING CIRCUIT

    公开(公告)号:JPH0888586A

    公开(公告)日:1996-04-02

    申请号:JP19218895

    申请日:1995-07-27

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide a thin and flexible radio frequency(RF) tag circuit by flexibly arranging elements of a package, a substrate and an antenna while mutually connecting them without crossing. SOLUTION: A circuit chip 210 on an insulated flexible substrate 220 is connected to an antenna 230 included in the substrate 220 while having a projection 225 at a contact 222. Thus, since the substrate 220 and the antenna 230 are flexibly arranged on one wiring plane while being mutually connected without crossing, a thin and flexible RF tag circuit 200 can be provided. Therefore, this circuit can be used in applications where thickness is limited, such as credit cards, passport covers, postage stamps, robbery preventive devices or entrance tickets. In these cases, it is preferable that one side or both sides of a package are laminated by flexible coating materials 270, and that the materials 270 have two layers of strong outer layer 260 and adhesive inner layer 250.

    RADIO FREQUENCY IDENTIFICATION TAGGING DEVICE

    公开(公告)号:JPH0888581A

    公开(公告)日:1996-04-02

    申请号:JP19213195

    申请日:1995-07-27

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide a radio frequency(RF) identification tag device with which mass production is enabled at reduced cost by providing an antenna element with a wire, connected through a wire bond connection to a connecting part on a semiconductor, and encapsulating it with a cover made of an organic substance. SOLUTION: An antenna 133 connected to a semiconductor circuit 111 on a substrate 141 is formed of 1st and 2nd wires 131 and 132 having connecting terminals connected to and opening terminals disconnected from 1st and 2nd connecting parts 121 and 122 by wire bond connections. Then, lengths 162 and 163 of wires 131 and 132 are determined corresponding to the frequency of RF signal to be transmitted. Besides, the circuit 111, the antenna 133 and the substrate 141 are encapsulated by a cover made of an organic substance 151. Thus, an RF identification tag device 100 can be produced from daily utensil materials at reduced cost while enable mass production. In this case, it is preferable that the lengths of wires 131 and 132 are equal and a wavelength is the 1/4 wavelength of the frequency of a signal.

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