JP2009110144A - Coin-shaped rfid tag - Google Patents

Coin-shaped rfid tag Download PDF

Info

Publication number
JP2009110144A
JP2009110144A JP2007280062A JP2007280062A JP2009110144A JP 2009110144 A JP2009110144 A JP 2009110144A JP 2007280062 A JP2007280062 A JP 2007280062A JP 2007280062 A JP2007280062 A JP 2007280062A JP 2009110144 A JP2009110144 A JP 2009110144A
Authority
JP
Japan
Prior art keywords
coin
rfid tag
metal plate
shaped
type rfid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2007280062A
Other languages
Japanese (ja)
Inventor
Toshikazu Nagura
Koki Shinomiya
敏和 名倉
航紀 四宮
Original Assignee
Oji Paper Co Ltd
王子製紙株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oji Paper Co Ltd, 王子製紙株式会社 filed Critical Oji Paper Co Ltd
Priority to JP2007280062A priority Critical patent/JP2009110144A/en
Publication of JP2009110144A publication Critical patent/JP2009110144A/en
Application status is Pending legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/04Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
    • G06K19/041Constructional details
    • G06K19/047Constructional details the record carrier being shaped as a coin or a gambling token

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly durable coin-shaped RFID tag in which the molded joint face of a disk-shaped edged resin case and a cover-shaped part are hardly peeled from each other even when an expansion/contraction stress is repeatedly applied due to a change in environment over time, especially a cyclic change in temperature. <P>SOLUTION: The coin-shaped RFID tag having almost uniform thickness is configured by molding a cover-shaped part 9 by injection molding by forming metallic boards 3 for weight adjustment like right and left asymmetrical shapes so that center lines 100A, 100B, 100C and 100D of a gap between the metallic boards 3 can be prevented from being concentrated on one point of the central part, and arranging those metallic board 3 while aligning the front and rear faces so that the cover-shaped part sides can become convex faces against any distortion to be generated in blanking. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coin-type RFID tag among RFID tags (Radio Frequency Identification) that perform data transmission / reception via radio waves.

RFID tags can read and write data from the outside wirelessly. In recent years, RFID tags are becoming widespread as a means for identifying and managing people and things. It is attracting attention as a fundamental technology for promotion.
There are various types of RFID tags such as a label type, a card type, a coin type, and a stick type, and they are selected according to applications.

As a conventional coin-type RFID tag, for example, an inlet composed of a coiled antenna and IC chips connected to both ends of the coiled antenna is used as a hole in the center of a C-shaped nonmagnetic metal plate. (See Patent Document 1).
However, the expansion and contraction stress is repeatedly applied to the resin due to the temperature change over time, and there has been a problem that the molded joint surface of the circumferential portion of the coin-type RFID tag is finally peeled off.
JP 2003-331250 A

  An object of the present invention is to provide a coin-type RFID tag having high durability even when the environment changes with time.

  In order to solve the above-mentioned problems, the present invention provides a metal plate without an inlet made of a circuit in which a plurality of metal plates are arranged in a ring shape inside the edge of a disk-shaped resin case with an edge, and an antenna and an IC chip are connected. A coin-type RFID tag that is placed in the center and then molded by a lid-shaped part by injection molding to make the thickness substantially uniform, so that the center line of the gap between the metal plates does not concentrate on one point in the center A coin-type RFID tag was constructed by arranging the metal plate.

When a metal plate is formed by punching, a slight warp usually occurs, but there is no problem if the front and back surfaces of the plurality of metal plates are aligned so that the lid-like portion side is a convex surface.

When molding the lid part by injection molding, it is necessary to fix the inlet and the metal plate so that they are not washed away, but the fixing means uses an adhesive or adhesive, or a double-sided tape using them, or It may be a guide created by molding in advance in a disc-shaped resin case with an edge.

  According to the present invention, the metal plate having a shape in which the center line of the gap between the metal plates is not concentrated on one point in the central portion is disposed in the disc-shaped edged resin case. The presence of two metal plates made it possible to disperse the stress. In addition, since the strain is dispersed by adopting such an arrangement, it is difficult to cause defects such as cracks due to contraction / expansion stress of the resin portion. This makes it possible to manufacture a strong coin-type RFID tag that does not separate cracks and joint surfaces against shrinkage and expansion stress caused by the difference in resin shrinkage rate, which can dramatically improve durability. It became.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a plan view of an intermediate product in a process of assembling a coin-type RFID tag according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. As shown in FIG. 1, the coin-type RFID tag according to the present invention includes an inlet 1 including an IC chip 5 and a coiled antenna 6, a metal plate 3, and a disc-shaped edged resin case 2.

As the IC chip 5, an IC chip that operates in a frequency band such as 125 to 135 KHz, 4.9 MHz, 6.5 MHz, 13.56 MHz, or UHF band can be used.
The coiled antenna 6 is electrically connected to the antenna connection terminals 7a and 7b of the lead frame of the IC chip 5, and data communication is performed by an electromagnetic induction method.

The coiled antenna 6 can be made by a method such as winding (covered copper wire), etching, printing, vapor deposition, plating, etc. However, in order to reduce the size, it is easy to wrap and break the circuit. It is preferable to use a wound antenna that has a relatively large area, a small resistance value, and can be manufactured at low cost.
Although there are copper, aluminum, gold, etc. as a material for the wound antenna, copper wire is most often used and there are many types. In general, enameled wire is used as the coated copper wire. When forming a coil, a wire having a hot melt or solvent-soluble adhesive provided on the outside of the insulating coating is used, and the wires are bonded together with an adhesive so that they cannot be unwound while winding the wires.

  As a method of connecting the coiled antenna 6 to the IC chip 5, a method of connecting with heat using a metal such as solder or an alloy, a method of connecting with a conductive adhesive containing metal powder such as silver or copper, Conventional connection methods such as welding in a broad sense including ultrasonic bonding, caulking, and thermocompression bonding between metals can be used. Among these, a connection method using solder and welding with high connection reliability is preferable.

  The metal plate 3 functions as a weight for setting the coin-type RFID tag to a desired weight. However, in the case of a magnetic metal, a non-magnetic metal is used because it affects communication characteristics. As the metal plate 3, a nonmagnetic brass plate, copper plate, phosphor bronze plate, or the like can be used.

  In the present invention, the thickness of the metal plate 3 is 1.5 mm or less. This is because, when a 1.5 mm thick metal plate 3 is provided in a 2.8 mm thick coin-type RFID tag, the thickness of the resin on the metal plate is about 0.4 mm on one side, and the thickness is larger than this. This is because the gap through which the resin flows becomes narrow when the lid-like portion is injection-molded, and it becomes difficult for the resin to sufficiently wrap around. Although depending on the layer configuration, the thickness of the metal plate 3 is preferably 1.5 mm or less from such a viewpoint.

If the weight of the coin-type RFID tag is about 5 g, the metal plate 3 needs a volume of about 300 mm 3 when made of brass. This can be converted to a brass plate in the range of 200 mm 2 × 1.5 mm to 500 mm 2 × 0.6 mm. In consideration of communication performance, injection moldability, and the free area of the installation portion of the inlet 1, the metal plate 3 is more preferably a brass plate having a thickness in the range of 0.8 mm to 1.2 mm.

  When a metal plate is punched from a large flat metal plate, the central portion becomes convex to some extent. If an expensive mold is used, it is possible to make it flat, but in the present invention, even if the central part is convex to some extent, if the front and back are arranged so that the lid side is convex, there is no problem In addition, a low-cost coin-type RFID tag can be manufactured.

The disc-shaped edged resin case 2 is made of polyester, polycarbonate (PC), acrylic, acrylonitrile-butadiene-styrene (ABS), polypropylene, polyethylene, fluororesin, polyamide, polymer alloy, engineering plastic, etc. It is formed from a thermoplastic resin that is generally injection moldable. Depending on the application, transparent, translucent and opaque ones can be used. Most resins other than transparent resins contain pigments such as titanium oxide, calcium carbonate, silica, carbon, and organic pigments, and additives such as dyes, ultraviolet absorbers, and lubricants. In addition, the completed coin-type RFID tag may be dyed with a dye.
The disc-shaped edged resin case 2 is produced by using a known injection molding method (primary molding). As can be seen from FIG. 2, the disc-shaped edged resin case 2 includes, in this embodiment, a disc-shaped main body portion 2 b and an annular protruding portion 2 a provided along the outer peripheral edge on the surface side of the main body portion 2 b. It is made up of.

  In the present invention, it is necessary to fix the inlet 1 and the metal plate 3 to the surface surrounded by the annular projecting portion 2a in the resin-molded edge-shaped resin case 2 having a primary shape. This is to prevent the metal plate 3 from being washed away by the resin injected at the time of molding the lid portion, thereby preventing the communication performance from being lowered, the center of gravity from moving, and the inlet 1 from being destroyed. It is essential to fix the inlet and the metal plate in order to facilitate handling in the injection molding operation.

As a method of fixing the inlet 1 and the metal plate 3, as a fixing member, (1) an adhesive or pressure-sensitive adhesive, or a fixing method using a double-sided tape 8 using them, (2) when molding a disc-shaped rimmed resin case A fixing method using the guide 10 (see FIG. 5) formed at the same time is conceivable.
The fixing method (1) can be used to fix the inlet 1 and the metal plate 3 simultaneously. As the adhesive to be fixed, general-purpose adhesives such as epoxy, silicone, cyanoacrylate and vinyl can be used, and it is preferable to select the adhesive depending on the material of the resin case used. A general ultraviolet curable resin is difficult to cure because the ultraviolet rays are shielded by a metal plate, and a thermosetting or reactive curing adhesive is preferable. Further, as the adhesive, general-purpose adhesives such as acrylic, silicone, and vinyl can be used. Moreover, a well-known thing can be used as a double-sided tape using it, The thing using paper, a film, a nonwoven fabric, a foam base material etc. as a core material, and the thing without a core material can be used.
In the fixing method (2), a guide 10 having a shape in which a metal plate and an inlet are accommodated is provided, and the metal plate and the inlet are fitted therein.

In the present invention, since the high-temperature resin is pushed out from the central portion of the disc-shaped edged resin case 2 at the time of molding the lid-shaped portion, heat and pressure are strongly applied to the central portion. Since the inlet 1 is disposed in the center of the disc-shaped edged resin case 2, it is preferable to protect the connecting portion between the IC chip and the coiled antenna with a heat-resistant thermosetting adhesive or the like.
This is intended to prevent damage to the IC chip due to heat and pressure during injection molding and disconnection at the connection with the coiled antenna.

FIG. 2 shows an intermediate product of a coin-type RFID tag (inlet 1 and metal plate 3 fixed to a surface surrounded by an annular protrusion 2a in a disc-shaped edged resin case 2). The high temperature resin injected from the central part of the disc-shaped edged resin case 2 is extruded to form a lid-like part. In this way, the inlet 1 side of the disc-shaped edged resin case 2 is covered with the lid-like portion 9, the inlet 1 and the metal plate 3 are sealed, and a coin-type RFID tag is manufactured (see FIG. 3).

As shown in FIG. 1, the metal plates used in the present invention are four asymmetrical shapes in which the center lines 100A, 100B, 100C, and 100D of the gaps between the metal plates are not concentrated on one point in the center. used. Since it is asymmetrical left and right, it is impossible to arrange four in a predetermined position unless the front and back sides are actually coincident with each other, so that all the metal plates are determined in one direction. In the present embodiment, since a relatively soft brass metal plate punched by a punching die is used, deformation occurs due to the cutting force applied to the end surface of the metal plate during punching, resulting in a generally distorted shape. In addition, due to the applied cutting stress, the corners of the metal plate are rounded and pointed. Further, burrs may occur at sharp corners.

  In the case of a metal plate punched with a mold, the above and the back can be made. In this embodiment, the metal plate is arranged with the pointed surface facing the disc-shaped edged resin case. This is because the fixed member 8 is stuck with sharp corners, so that the thickness of the metal plate is suppressed, that is, the flow of the resin is not disturbed, and at the same time, the local stress applied to the resin by substantially rounding the corners by the fixing member 8. This prevents the occurrence of defects such as cracks in the resin part. The round corners of the metal plate are directly formed with the resin of the lid part by injection molding, but since the corners are rounded in advance, local stress is not applied to the resin, so there are also cracks in the resin part. It is possible to suppress the occurrence of inconvenience. Further, if the distortion generated in the metal plate is within a range that does not hinder the flow path of the resin, no substantial problem occurs.

When the front and back of the metal plate are reversed, the round corners of the metal plate are fixed to the fixing member side, and the sharp corners are in contact with the lid-like portion. In this case, local stress is applied to the lid-like portion from the sharp corner of the metal plate, and cracks may occur from this portion over time.

  In this embodiment, the metal plate is produced by punching with a press, but it is also possible to produce by cutting with a laser or water pressure. In this case, the metal plate has a nearly vertical corner, and a flat plate having no distortion as a whole. However, burrs may remain at the corners. Depending on the degree, if the resin is sealed in a state where burrs are generated, the flow of the resin will deteriorate locally, or local stress will be applied to the resin part of the completed coin-type RFID tag. May occur.

  If the metal plate has burrs, it can be deburred by various deburring devices. By removing burrs in this manner, the metal plate produced by these methods can be used without any problem.

  FIG. 4 shows a schematic plan view of a conventional fan-shaped metal plate described in Patent Document 1 and the like. In this case, the central lines 200A and 200B of the gaps between the metal plates are concentrated at one point in the center. Such a shape causes stress concentration in the soft resin portion without metal on the center lines 200A and 200B, which causes cracks in the resin over time. Furthermore, since the arrangement of the IC chip is limited to the central portion, the IC chip is also stressed, causing a communication failure due to breakage of the IC chip and poor connection. On the other hand, in the present invention, the center lines 100A, 100B, 100C, and 100D of the gaps between the metal plates have a shape that does not concentrate on one point in the central portion, that is, the metal plate always exists in any cross section. The structure is such that stress is dispersed as a whole and local stress is not easily applied. With the configuration of the present invention, cracks in the resin portion, IC chip breakage, and poor connection were simultaneously improved, and a dramatic improvement in durability was achieved.

Specific examples of manufacturing the coin-type RFID tag according to the present invention will be described below, but the present invention is not limited to these examples.
The coin-type RFID tags described in the following embodiments can be used for both cards and tags other than those described in the embodiments.

(Example 1)
A coin-type RFID tag substantially similar to the coin-type RFID tag shown in FIGS.

[Production of inlet sheet]

A coil of 13 turns with an inner diameter of 17 mm was prepared with a heat-sealed copper wire with an outer diameter of 0.14 mm (2LOCK Y1 0.14 / manufactured by Tokyo Special Electric Cable Co., Ltd.), and both terminals of the coil are shown in FIG. Thus, the packaged IC chip (SLE55R04 chip / manufactured by Infineon Co., Ltd.) 5 provided with the terminal portions 7a and 7b was connected by resistance welding. Excess heat-fused copper wire was cut and removed so that the tip portion was placed inside the coil, which was used as an inlet.

[Production of coin-type RFID tags]
An edged resin case having a disc-like outer diameter of φ32 mm, an edge of 1.4 mm, and a central part of 0.7 mm was made by injection molding using a mixed resin of ABS / PC (CK10 / Technopolymer Co., Ltd.). The width of the edge portion 4 of the disc-shaped edged resin case is 1 mm. Inside, a double-sided tape (DF8500S-25P / manufactured by Toyo Ink Manufacturing Co., Ltd.) with a base material of PET film is attached to fix the inlet and metal plate, and the center of the inlet and the metal plate are attached. Fixed in place around the periphery. The metal plates used here were made of brass, and four asymmetrical plates with a shape in which the center line of the gap between the metal plates was not concentrated at one point in the central portion were used. In the present example, the metal plate was placed with the pointed surface facing the disc-shaped edged resin case. Next, from the side where the metal plate or the like was attached, the lid-shaped portion was molded with the same resin as the disk-shaped resin case with a rim, thereby obtaining a coin-type RFID tag having a desired thickness of 2.8 mm.

(Comparative Example 1)
A coin-type RFID tag was produced in the same manner as in Example 1 except that a symmetrical metal plate (see FIG. 4) was provided on the edge portion of the disc-shaped edged resin case of Example 1.

[Outline of durability test]

[Communication measurement method]
The resonance frequency of the contactless coin-type RFID tag of the example / comparative example was measured. The resonance frequency of the coin-type RFID tag was measured by a measuring instrument in which a loop antenna having a diameter of 5 cm was connected to a network analyzer (model R3754B / manufactured by Advantest) and confirmed to be 13.56 MHz. In addition, it was confirmed that communication was possible with a reader / writer (HW210 / Sakusa Co., Ltd.) connected to a personal computer.

[Appearance inspection method]
The surface of the contactless coin-type RFID tag of Example / Comparative Example and the connecting portion of the end face 11 were observed to confirm whether there was any cracking or peeling.

[Durability test method]
In order to accelerate the durability test, a thermal shock test was performed under the following conditions.
-40 ° C x 30 minutes ⇔ Normal temperature x 5 minutes ℃ 85 ° C x 30 minutes / cycle 20 samples each

〔Test results〕
The number of defects in 20 samples is shown.
As described above, it was confirmed that the coin-type RFID tag according to the present invention is a coin-type RFID tag whose durability is dramatically improved as compared with the conventional one.

It is a top view which shows the coin type RFID tag intermediate product used for this invention. It is AA 'sectional drawing of FIG. FIG. 3 is a cross-sectional view of a coin-type RFID tag formed by injection molding. It is a top view which shows the conventional coin type RFID tag intermediate product. It is sectional drawing of the coin type RFID tag intermediate product which used the guide for fixation of a metal plate.

Explanation of symbols

1 Inlet 2 Disc-shaped rim resin case
2 a annular projection portion 2 b main body portion 3 metal plate 4 edge 5 IC chip 6 coiled antennas 7a and 7b terminal 8 adhesive or adhesive, or double-sided tape using them 9 lid portion 10 guide 11 end surface 100A, 100B, 100C, 100D, 200A, 200B
Center line of gap between metal plates

Claims (4)

  1. A plurality of metal plates are arranged in a ring shape inside the edge of the resin case with a disc-shaped edge, and an inlet consisting of a circuit connecting the antenna and the IC chip is arranged in the center without the metal plate, and further by injection molding A coin-type RFID tag having a substantially uniform thickness by molding a lid-like portion, characterized in that a metal plate having a shape in which the center line of the gap between the metal plates does not concentrate on one point in the central portion is arranged Coin-type RFID tag.
  2. The coin-type RFID tag according to claim 1, wherein the metal plate is arranged with its front and back aligned so that the lid-like portion side is a convex surface.
  3. The coin-type RFID tag according to claim 1 or 2, wherein the fixing means for the metal plate and the inlet is an adhesive or an adhesive.
  4. The coin-type RFID tag according to claim 1 or 2, wherein the fixing means for the metal plate and the inlet is a guide in a disc-shaped resin case with an edge.
JP2007280062A 2007-10-29 2007-10-29 Coin-shaped rfid tag Pending JP2009110144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007280062A JP2009110144A (en) 2007-10-29 2007-10-29 Coin-shaped rfid tag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007280062A JP2009110144A (en) 2007-10-29 2007-10-29 Coin-shaped rfid tag

Publications (1)

Publication Number Publication Date
JP2009110144A true JP2009110144A (en) 2009-05-21

Family

ID=40778598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007280062A Pending JP2009110144A (en) 2007-10-29 2007-10-29 Coin-shaped rfid tag

Country Status (1)

Country Link
JP (1) JP2009110144A (en)

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8336786B2 (en) 2010-03-12 2012-12-25 Murata Manufacturing Co., Ltd. Wireless communication device and metal article
US8400365B2 (en) 2009-11-20 2013-03-19 Murata Manufacturing Co., Ltd. Antenna device and mobile communication terminal
US8413907B2 (en) 2007-07-17 2013-04-09 Murata Manufacturing Co., Ltd. Wireless IC device and electronic apparatus
US8424769B2 (en) 2010-07-08 2013-04-23 Murata Manufacturing Co., Ltd. Antenna and RFID device
US8424762B2 (en) 2007-04-14 2013-04-23 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8544759B2 (en) 2009-01-09 2013-10-01 Murata Manufacturing., Ltd. Wireless IC device, wireless IC module and method of manufacturing wireless IC module
US8552870B2 (en) 2007-07-09 2013-10-08 Murata Manufacturing Co., Ltd. Wireless IC device
US8590797B2 (en) 2008-05-21 2013-11-26 Murata Manufacturing Co., Ltd. Wireless IC device
US8602310B2 (en) 2010-03-03 2013-12-10 Murata Manufacturing Co., Ltd. Radio communication device and radio communication terminal
US8613395B2 (en) 2011-02-28 2013-12-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8676117B2 (en) 2006-01-19 2014-03-18 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8680971B2 (en) 2009-09-28 2014-03-25 Murata Manufacturing Co., Ltd. Wireless IC device and method of detecting environmental state using the device
US8690070B2 (en) 2009-04-14 2014-04-08 Murata Manufacturing Co., Ltd. Wireless IC device component and wireless IC device
US8718727B2 (en) 2009-12-24 2014-05-06 Murata Manufacturing Co., Ltd. Antenna having structure for multi-angled reception and mobile terminal including the antenna
US8720789B2 (en) 2012-01-30 2014-05-13 Murata Manufacturing Co., Ltd. Wireless IC device
US8740093B2 (en) 2011-04-13 2014-06-03 Murata Manufacturing Co., Ltd. Radio IC device and radio communication terminal
US8770489B2 (en) 2011-07-15 2014-07-08 Murata Manufacturing Co., Ltd. Radio communication device
US8797148B2 (en) 2008-03-03 2014-08-05 Murata Manufacturing Co., Ltd. Radio frequency IC device and radio communication system
US8797225B2 (en) 2011-03-08 2014-08-05 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US8814056B2 (en) 2011-07-19 2014-08-26 Murata Manufacturing Co., Ltd. Antenna device, RFID tag, and communication terminal apparatus
US8853549B2 (en) 2009-09-30 2014-10-07 Murata Manufacturing Co., Ltd. Circuit substrate and method of manufacturing same
US8870077B2 (en) 2008-08-19 2014-10-28 Murata Manufacturing Co., Ltd. Wireless IC device and method for manufacturing same
US8878739B2 (en) 2011-07-14 2014-11-04 Murata Manufacturing Co., Ltd. Wireless communication device
US8905296B2 (en) 2011-12-01 2014-12-09 Murata Manufacturing Co., Ltd. Wireless integrated circuit device and method of manufacturing the same
US8917211B2 (en) 2008-11-17 2014-12-23 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8937576B2 (en) 2011-04-05 2015-01-20 Murata Manufacturing Co., Ltd. Wireless communication device
US8944335B2 (en) 2010-09-30 2015-02-03 Murata Manufacturing Co., Ltd. Wireless IC device
US8976075B2 (en) 2009-04-21 2015-03-10 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US8981906B2 (en) 2010-08-10 2015-03-17 Murata Manufacturing Co., Ltd. Printed wiring board and wireless communication system
US8991713B2 (en) 2011-01-14 2015-03-31 Murata Manufacturing Co., Ltd. RFID chip package and RFID tag
US9024725B2 (en) 2009-11-04 2015-05-05 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9024837B2 (en) 2010-03-31 2015-05-05 Murata Manufacturing Co., Ltd. Antenna and wireless communication device
US9104950B2 (en) 2009-01-30 2015-08-11 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US9117157B2 (en) 2009-10-02 2015-08-25 Murata Manufacturing Co., Ltd. Wireless IC device and electromagnetic coupling module
US9165239B2 (en) 2006-04-26 2015-10-20 Murata Manufacturing Co., Ltd. Electromagnetic-coupling-module-attached article
US9166291B2 (en) 2010-10-12 2015-10-20 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US9236651B2 (en) 2010-10-21 2016-01-12 Murata Manufacturing Co., Ltd. Communication terminal device
US9281873B2 (en) 2008-05-26 2016-03-08 Murata Manufacturing Co., Ltd. Wireless IC device system and method of determining authenticity of wireless IC device
US9378452B2 (en) 2011-05-16 2016-06-28 Murata Manufacturing Co., Ltd. Radio IC device
US9444143B2 (en) 2009-10-16 2016-09-13 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US9460376B2 (en) 2007-07-18 2016-10-04 Murata Manufacturing Co., Ltd. Radio IC device
US9460320B2 (en) 2009-10-27 2016-10-04 Murata Manufacturing Co., Ltd. Transceiver and radio frequency identification tag reader
US9461363B2 (en) 2009-11-04 2016-10-04 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9543642B2 (en) 2011-09-09 2017-01-10 Murata Manufacturing Co., Ltd. Antenna device and wireless device
US9558384B2 (en) 2010-07-28 2017-01-31 Murata Manufacturing Co., Ltd. Antenna apparatus and communication terminal instrument
US9692128B2 (en) 2012-02-24 2017-06-27 Murata Manufacturing Co., Ltd. Antenna device and wireless communication device
US9727765B2 (en) 2010-03-24 2017-08-08 Murata Manufacturing Co., Ltd. RFID system including a reader/writer and RFID tag
US9761923B2 (en) 2011-01-05 2017-09-12 Murata Manufacturing Co., Ltd. Wireless communication device
US10013650B2 (en) 2010-03-03 2018-07-03 Murata Manufacturing Co., Ltd. Wireless communication module and wireless communication device
US10235544B2 (en) 2012-04-13 2019-03-19 Murata Manufacturing Co., Ltd. Inspection method and inspection device for RFID tag

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8676117B2 (en) 2006-01-19 2014-03-18 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8725071B2 (en) 2006-01-19 2014-05-13 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US9165239B2 (en) 2006-04-26 2015-10-20 Murata Manufacturing Co., Ltd. Electromagnetic-coupling-module-attached article
US8424762B2 (en) 2007-04-14 2013-04-23 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8662403B2 (en) 2007-07-04 2014-03-04 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8552870B2 (en) 2007-07-09 2013-10-08 Murata Manufacturing Co., Ltd. Wireless IC device
US8413907B2 (en) 2007-07-17 2013-04-09 Murata Manufacturing Co., Ltd. Wireless IC device and electronic apparatus
US9830552B2 (en) 2007-07-18 2017-11-28 Murata Manufacturing Co., Ltd. Radio IC device
US9460376B2 (en) 2007-07-18 2016-10-04 Murata Manufacturing Co., Ltd. Radio IC device
US8797148B2 (en) 2008-03-03 2014-08-05 Murata Manufacturing Co., Ltd. Radio frequency IC device and radio communication system
US8590797B2 (en) 2008-05-21 2013-11-26 Murata Manufacturing Co., Ltd. Wireless IC device
US8973841B2 (en) 2008-05-21 2015-03-10 Murata Manufacturing Co., Ltd. Wireless IC device
US9022295B2 (en) 2008-05-21 2015-05-05 Murata Manufacturing Co., Ltd. Wireless IC device
US9281873B2 (en) 2008-05-26 2016-03-08 Murata Manufacturing Co., Ltd. Wireless IC device system and method of determining authenticity of wireless IC device
US8870077B2 (en) 2008-08-19 2014-10-28 Murata Manufacturing Co., Ltd. Wireless IC device and method for manufacturing same
US8917211B2 (en) 2008-11-17 2014-12-23 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8544759B2 (en) 2009-01-09 2013-10-01 Murata Manufacturing., Ltd. Wireless IC device, wireless IC module and method of manufacturing wireless IC module
US9104950B2 (en) 2009-01-30 2015-08-11 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8690070B2 (en) 2009-04-14 2014-04-08 Murata Manufacturing Co., Ltd. Wireless IC device component and wireless IC device
US8876010B2 (en) 2009-04-14 2014-11-04 Murata Manufacturing Co., Ltd Wireless IC device component and wireless IC device
US9564678B2 (en) 2009-04-21 2017-02-07 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US9203157B2 (en) 2009-04-21 2015-12-01 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US8976075B2 (en) 2009-04-21 2015-03-10 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US8680971B2 (en) 2009-09-28 2014-03-25 Murata Manufacturing Co., Ltd. Wireless IC device and method of detecting environmental state using the device
US8853549B2 (en) 2009-09-30 2014-10-07 Murata Manufacturing Co., Ltd. Circuit substrate and method of manufacturing same
US9117157B2 (en) 2009-10-02 2015-08-25 Murata Manufacturing Co., Ltd. Wireless IC device and electromagnetic coupling module
US9444143B2 (en) 2009-10-16 2016-09-13 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US9460320B2 (en) 2009-10-27 2016-10-04 Murata Manufacturing Co., Ltd. Transceiver and radio frequency identification tag reader
US9461363B2 (en) 2009-11-04 2016-10-04 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9024725B2 (en) 2009-11-04 2015-05-05 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US8704716B2 (en) 2009-11-20 2014-04-22 Murata Manufacturing Co., Ltd. Antenna device and mobile communication terminal
US8400365B2 (en) 2009-11-20 2013-03-19 Murata Manufacturing Co., Ltd. Antenna device and mobile communication terminal
US8718727B2 (en) 2009-12-24 2014-05-06 Murata Manufacturing Co., Ltd. Antenna having structure for multi-angled reception and mobile terminal including the antenna
US10013650B2 (en) 2010-03-03 2018-07-03 Murata Manufacturing Co., Ltd. Wireless communication module and wireless communication device
US8602310B2 (en) 2010-03-03 2013-12-10 Murata Manufacturing Co., Ltd. Radio communication device and radio communication terminal
US8528829B2 (en) 2010-03-12 2013-09-10 Murata Manufacturing Co., Ltd. Wireless communication device and metal article
US8336786B2 (en) 2010-03-12 2012-12-25 Murata Manufacturing Co., Ltd. Wireless communication device and metal article
US9727765B2 (en) 2010-03-24 2017-08-08 Murata Manufacturing Co., Ltd. RFID system including a reader/writer and RFID tag
US9024837B2 (en) 2010-03-31 2015-05-05 Murata Manufacturing Co., Ltd. Antenna and wireless communication device
US8424769B2 (en) 2010-07-08 2013-04-23 Murata Manufacturing Co., Ltd. Antenna and RFID device
US9558384B2 (en) 2010-07-28 2017-01-31 Murata Manufacturing Co., Ltd. Antenna apparatus and communication terminal instrument
US8981906B2 (en) 2010-08-10 2015-03-17 Murata Manufacturing Co., Ltd. Printed wiring board and wireless communication system
US8944335B2 (en) 2010-09-30 2015-02-03 Murata Manufacturing Co., Ltd. Wireless IC device
US9166291B2 (en) 2010-10-12 2015-10-20 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US9236651B2 (en) 2010-10-21 2016-01-12 Murata Manufacturing Co., Ltd. Communication terminal device
US9761923B2 (en) 2011-01-05 2017-09-12 Murata Manufacturing Co., Ltd. Wireless communication device
US8991713B2 (en) 2011-01-14 2015-03-31 Murata Manufacturing Co., Ltd. RFID chip package and RFID tag
US8757502B2 (en) 2011-02-28 2014-06-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8613395B2 (en) 2011-02-28 2013-12-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8960561B2 (en) 2011-02-28 2015-02-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8797225B2 (en) 2011-03-08 2014-08-05 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US8937576B2 (en) 2011-04-05 2015-01-20 Murata Manufacturing Co., Ltd. Wireless communication device
US8740093B2 (en) 2011-04-13 2014-06-03 Murata Manufacturing Co., Ltd. Radio IC device and radio communication terminal
US9378452B2 (en) 2011-05-16 2016-06-28 Murata Manufacturing Co., Ltd. Radio IC device
US8878739B2 (en) 2011-07-14 2014-11-04 Murata Manufacturing Co., Ltd. Wireless communication device
US8770489B2 (en) 2011-07-15 2014-07-08 Murata Manufacturing Co., Ltd. Radio communication device
US8814056B2 (en) 2011-07-19 2014-08-26 Murata Manufacturing Co., Ltd. Antenna device, RFID tag, and communication terminal apparatus
US9543642B2 (en) 2011-09-09 2017-01-10 Murata Manufacturing Co., Ltd. Antenna device and wireless device
US8905296B2 (en) 2011-12-01 2014-12-09 Murata Manufacturing Co., Ltd. Wireless integrated circuit device and method of manufacturing the same
US8720789B2 (en) 2012-01-30 2014-05-13 Murata Manufacturing Co., Ltd. Wireless IC device
US9692128B2 (en) 2012-02-24 2017-06-27 Murata Manufacturing Co., Ltd. Antenna device and wireless communication device
US10235544B2 (en) 2012-04-13 2019-03-19 Murata Manufacturing Co., Ltd. Inspection method and inspection device for RFID tag

Similar Documents

Publication Publication Date Title
TWI267788B (en) Radio frequency identification (RFID) tag and manufacturing method thereof
US6794727B2 (en) Single receiving side contactless electronic module continuous manufacturing process
US7277017B2 (en) RFID tag
JP4196554B2 (en) Tag antenna coil and RFID tag using the same
US6724690B1 (en) Wrist watch containing tag
EP1640893B1 (en) Antenna for RFID tag
TWI292558B (en) Radio frequency ic tag and bolt with an ic tag
US20040052202A1 (en) RFID enabled information disks
US5671525A (en) Method of manufacturing a hybrid chip card
JP4839257B2 (en) RFID tag
CN1262431C (en) Communication appts. and installing structure, mfg. method and communication method
JP2008107947A (en) Rfid tag
JP4265114B2 (en) Antenna coil for tags
TWI264785B (en) Wireless IC tag
JP2009271932A (en) Ic tag sticking sheet for disk-shaped recording medium, and disk-shaped recording medium
JP2006031766A (en) Radio tag antenna structure for optical recording medium and case for accommodating optical recording medium with radio tag antenna
US7274297B2 (en) RFID tag and method of manufacture
US5598032A (en) Hybrid chip card capable of both contact and contact-free operation and having antenna contacts situated in a cavity for an electronic module
US7938334B2 (en) Radio frequency identification functionality coupled to electrically conductive signage
JP3800766B2 (en) Compound IC module and compound IC card
US20110011939A1 (en) Contact-less and dual interface inlays and methods for producing the same
EP1662613A1 (en) Magnetic core member, antenna module, and mobile communication terminal having the same
EP1090379A1 (en) Radio frequency identification tag having a printed antenna and method
EP1837809A1 (en) Ic tag storing case
US8042742B2 (en) Noncontact IC label and method and apparatus for manufacturing the same