RFID tag and its manufacturing method
First Claim
1. An RFID tag which is provided with a coil-shaped antenna such that a conductor is placed on a periphery of a magnetic core, said RFID comprising:
- a magnetic core;
an FPC wound on the periphery of said magnetic core;
two or more linear conductor patterns formed in parallel with one another on said FPC;
an IC that is connected to said linear conductor patterns and disposed on said FPC;
a crossover pattern that electrically connects one end and other end of outermost linear conductor patterns among said linear conductor patterns formed in parallel with one another;
wherein said two or more linear conductor patterns, adjacent linear conductor patterns in a joint portion in said wound FPC are electrically connected in respective start edges and end edges.
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Accused Products
Abstract
An RFID tag which is provided with a coil-shaped antenna such that a conductor is placed on the periphery of a magnetic core, the RFID comprising: the magnetic core, an FPC wound on the periphery of the magnetic core, two or more linear conductor patterns formed in parallel with one another on the FPC, an IC that is connected to the linear conductor patterns and disposed on the FPC, a crossover pattern that electrically connects one end and the other end of outermost linear conductor patterns among the linear conductor patterns formed in parallel with one another, where in the two or more linear conductor patterns, adjacent linear conductor patterns in a joint portion in the wound FPC are electrically connected in respective start edges and end edges.
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Citations
23 Claims
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1. An RFID tag which is provided with a coil-shaped antenna such that a conductor is placed on a periphery of a magnetic core, said RFID comprising:
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a magnetic core;
an FPC wound on the periphery of said magnetic core;
two or more linear conductor patterns formed in parallel with one another on said FPC;
an IC that is connected to said linear conductor patterns and disposed on said FPC;
a crossover pattern that electrically connects one end and other end of outermost linear conductor patterns among said linear conductor patterns formed in parallel with one another;
wherein said two or more linear conductor patterns, adjacent linear conductor patterns in a joint portion in said wound FPC are electrically connected in respective start edges and end edges. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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2. An RFID tag which is provided with a magnetic core including at least one magnetic material, a coil-shaped antenna such that a conductor is placed in a helical form on a periphery of said magnetic core, an IC,
wherein said coil-shaped antenna is obtained by winding an FPC around said magnetic core in which on one side of said FPC are formed two or more linear conductor patterns in parallel with one another, electrically connecting adjacent linear conductor patterns, thereby forming a helical current path on the periphery of said magnetic core, and connecting one end and other end of said current path.
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12. A manufacturing method of an RFID tag, the method comprising the steps of:
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forming two or more linear conductor patterns and a crossover pattern on an FPC;
placing an IC on said FPC;
winding said FPC around a magnetic core;
electrically connecting respective start edges and end edges of said linear conductor patterns adjacent to one another. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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13. A manufacturing method of an RFID tag, the method comprising the steps of:
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forming two or more linear conductor patterns on one side of an FPC;
winding said FPC around said magnetic core;
electrically connecting said linear patterns adjacently positioned to form a helical current path on a periphery of said magnetic core;
connecting one end and other end of said helical current path.
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14. A manufacturing method of an RFID tag, the method comprising the steps of:
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forming two or more linear conductor patterns on one side of an FPC;
forming a crossover pattern that electrically connects one end and other end of said helical current path on other side different from a side on which said linear conductor patterns are formed;
winding said FPC around a magnetic core;
electrically connecting said linear patterns adjacently positioned to form a helical current path on a periphery of said magnetic core;
electrically connecting one end and other end of said helical current path.
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Specification