WO2019130811A1 - 携帯型無線通信装置、および携帯型無線通信装置を用いた情報識別装置 - Google Patents
携帯型無線通信装置、および携帯型無線通信装置を用いた情報識別装置 Download PDFInfo
- Publication number
- WO2019130811A1 WO2019130811A1 PCT/JP2018/040743 JP2018040743W WO2019130811A1 WO 2019130811 A1 WO2019130811 A1 WO 2019130811A1 JP 2018040743 W JP2018040743 W JP 2018040743W WO 2019130811 A1 WO2019130811 A1 WO 2019130811A1
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- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- electrode
- wireless communication
- coil antenna
- electrodes
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record 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
- G06K19/067—Record 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
- G06K19/07—Record 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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/59—Responders; Transponders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
Definitions
- One embodiment of the present invention relates to a portable wireless communication device and an information identification apparatus using the portable wireless communication device.
- a portable wireless communication device having a semiconductor element on which an integrated circuit is mounted and an antenna as a basic structure is used. Power is induced in the antenna by electromagnetic induction by a reader / writer or radio waves, which drives an integrated circuit (IC) chip that includes various elements that do not have a power supply.
- the IC chip performs various processes such as reading information embedded in the IC chip, writing information in the IC chip, generating and transmitting an instruction, and receiving an instruction from a reader / writer.
- RFID Radio Frequency Identification
- RFID Radio Frequency Identification
- wireless communication devices Due to the variety of stored information and the excellent portability of the wireless communication device itself, wireless communication devices are widely used as a means of product management, personal identification, security measures, electronic tickets, game cards, commerce decisions, etc. It's being used.
- Patent Document 1 discloses that a non-contact information medium is provided with a chip coil. Further, Patent Document 2 discloses that a plurality of coils smaller than the main antenna are provided without using a chip coil.
- Patent Document 1 the need to provide a chip coil may cause variations in the quality of the coil or may increase the manufacturing cost of the IC tag. Further, in the case of Patent Document 2, it is difficult to increase the manufacturing tact of the antenna, so it is necessary to provide many manufacturing devices.
- an embodiment of the present invention has an object to provide a portable wireless communication device with less variation in quality, which can be mass-produced inexpensively.
- an insulating substrate having a first surface and a second surface opposite to the first surface, a coil antenna disposed in a loop on the insulating substrate, and a coil antenna
- the coil antenna is disposed on the first surface side of the insulating substrate, and a plurality of first electrodes having a first portion and a second portion
- the insulating substrate A plurality of second electrodes disposed on the second surface side and having a third portion and a fourth portion, and a plurality of through electrodes disposed in the insulating substrate, the first of the plurality of first electrodes
- the first portion of one electrode is connected to the fourth portion of one second electrode of the plurality of second electrodes using one of the plurality of through electrodes, and one of the plurality of first electrodes is selected.
- the second portion of one first electrode is formed of a plurality of through electrodes using one other of the plurality of through electrodes. Of the two electrodes is connected to the third portion of the other one of the second one of the second
- At least one of the plurality of first electrodes and the plurality of second electrodes may have a serpentine shape.
- a portable type including a coil antenna arranged in a loop and an IC chip electrically connected to the coil antenna, the coil antenna having a helical shape in a circumferential direction.
- a wireless communication device is provided.
- the coil antenna includes a looped first antenna and a looped second antenna disposed inside the first antenna in plan view, and the first antenna and the second antenna May be connected in part.
- the coil antenna includes a loop-shaped first antenna and a loop-shaped second antenna disposed to overlap the first antenna, and the first antenna and the second antenna are one. It may be connected in a part.
- an insulating substrate having a first surface and a second surface opposite to the first surface, a coil antenna disposed in a loop on the insulating substrate, and a coil antenna
- An electrically connected IC chip wherein the coil antenna is disposed on the first surface or the second surface of the insulating substrate and disposed on the plurality of insulating layers, the plurality of electrodes, and the plurality of insulating layers
- a portable wireless communication device including a plurality of through electrodes connecting each of a plurality of electrodes, and having a spiral shape in a cross sectional view.
- the portable wireless communication device may include a shield disposed so as to overlap with the coil antenna.
- the coil antenna may have a circular shape in plan view.
- the coil antenna may have a rectangular shape in plan view.
- an information identification device including one or more of the above-described portable wireless communication devices and a reader / writer.
- FIG. 1A is a top view and a cross-sectional view of a portable wireless communication device according to an embodiment of the present invention. It is a perspective view of the antenna part of the portable radio
- FIG. 1 is a block diagram of a portable wireless communication device and a reader / writer according to an embodiment of the present invention. It is sectional drawing which shows the drive state of the portable wireless communication apparatus of one Embodiment of this invention, and a reader / writer. It is a schematic diagram which shows the magnetic force line in the portable radio
- FIG. 1 is a top view of a portable wireless communication device according to an embodiment of the present invention.
- FIG. 1 is a top view of a portable wireless communication device according to an embodiment of the present invention.
- FIG. 1A is a top view and a cross-sectional view of a portable wireless communication device according to an embodiment of the present invention.
- FIG. 1 is a perspective view of a portable wireless communication device according to an embodiment of the present invention. It is sectional drawing of the antenna part of the portable wireless communication apparatus of one Embodiment of this invention. It is a specific example of the portable radio
- FIG. 1 is a top view of a portable wireless communication device according to an embodiment of the present invention. It is a top view of a portable wireless communication device of one embodiment of the present invention, and a top view of a shield.
- FIG. 1 is a top view of a portable wireless communication device according to an embodiment of the present invention.
- FIG. 1A is a top view and a cross-sectional view of a portable wireless communication device according to an embodiment of the present invention.
- FIG. 1 is a cross-sectional view of a portable wireless communication device according to an embodiment of the present invention. It is sectional drawing which shows the drive state of the portable wireless communication apparatus of one Embodiment of this invention, and a reader / writer.
- FIG. 1 is a top view of a portable wireless communication device according to an embodiment of the present invention. It is sectional drawing which shows the drive state of the conventional portable wireless communication apparatus and reader / writer.
- a portable wireless communication device hereinafter referred to as an IC tag
- an information identification device including the IC tag according to an embodiment of the present invention
- FIG. 1 is a schematic view of the information identification device 10.
- the information identification device 10 includes an IC tag 100 and a reader / writer 300.
- the IC tag 100 includes an IC chip 110, a coil antenna 130, a support portion 140, and a base material 145.
- the IC chip 110 and the coil antenna 130 are provided on the base 145.
- the IC chip 110 and the coil antenna 130 are electrically connected in part.
- the IC chip 110 is configured to generate a signal in accordance with an instruction from a reader / writer 300 (described later).
- the signal is transmitted to reader / writer 300 by coil antenna 130.
- the support portion 140 has a function of supporting the IC chip 110, the coil antenna 130, and the substrate 145.
- a material such as polyethylene terephthalate (PET), polyvinyl chloride (PVC), or paper is used.
- PET polyethylene terephthalate
- PVC polyvinyl chloride
- the thickness of the support portion 140 is not particularly limited, but can be appropriately selected from several hundred ⁇ m to several cm according to the purpose.
- FIG. 2 is a top view of the IC tag 100 and a cross-sectional view of the coil antenna 130 between A1 and A2.
- FIG. 3 is a perspective view of the coil antenna 130.
- the coil antenna 130 is an electromagnetic induction antenna and is arranged in a loop.
- the coil antenna 130 has a circular shape in plan view.
- An electromotive force (voltage) having a magnitude corresponding to a change in magnetic flux density passing through the area surrounded by the coil antenna 130 is generated in the coil antenna 130.
- the electromotive force is applied to the IC chip 110 electrically connected to the coil antenna 130, and the IC chip 110 is driven.
- the coil antenna 130 is configured to resonate in a frequency band of, for example, a short wave (HF) or an ultra high frequency (UHF).
- HF short wave
- UHF ultra high frequency
- the short wave corresponds to the 13.56 MHz frequency band.
- the microwave corresponds to the frequency band of 860 to 960 MHz.
- the coil antenna includes an electrode 133, an electrode 137, and a through electrode 135.
- the electrode 133 and the electrode 137 are electrically connected via the through electrode 135.
- the electrode 133 may be referred to as a first electrode
- the electrode 137 may be referred to as a second electrode.
- the substrate 145 is a plate-like member having a first surface 145A and a second surface 145B.
- a high-resistance insulating material is used for the substrate 145.
- a glass epoxy resin substrate is used as the base material 145.
- the base material 145 is not limited to glass epoxy resin, and resin materials such as acrylic resin and polyethylene terephthalate resin may be used, and paper phenol resin in which a paper base material is made to contain phenol resin and hardened A substrate may be used.
- the base 145 is a quartz glass substrate, a soda glass substrate, a borosilicate glass substrate, an alkali-free glass substrate, a sapphire substrate, a silicon substrate, a silicon carbide substrate, an alumina (Al 2 O 3 ) substrate, an aluminum nitride (AlN) substrate Inorganic materials such as zirconia (ZrO 2 ) substrates may be used.
- a plurality of electrodes 133 are disposed on the upper surface (first surface 145A) side of the base material 145.
- copper is used for the electrode 133.
- the electrode 133 is not limited to copper, and a material with low resistivity, such as aluminum, silver, or gold may be used.
- the electrode 133 may include a conductor having magnetism such as iron, nickel, cobalt, or ferrite.
- the magnetic conductor may be a single element or an alloy.
- the electrode 133 may contain boron in a magnetic conductor.
- the electrode 133 is not limited to a magnetic material, and may be a shape memory alloy such as a titanium-nickel alloy, or stainless steel.
- a plurality of electrodes 137 are disposed on the lower surface (second surface 145 B) side of the base 145.
- the same material as the electrode 133 is used for the electrode 137.
- a plurality of through electrodes 135 are provided on the base 145. Copper is used for the through electrode 135.
- the through electrode 135 is not limited to copper, and a material containing gold, silver, copper, nickel or tin may be used.
- each of the plurality of electrodes 133 is radially arranged.
- Each of the plurality of electrodes 137 is disposed to be inclined at a predetermined angle with respect to the direction in which the electrodes 133 are disposed.
- the electrode 133 has a portion 133A (also referred to as a first portion) at one end and a portion 133B (also referred to as a second portion) at the other end.
- the second electrode 137 has a portion 137A (also referred to as a third portion) at one end and a portion 137B (also referred to as a fourth portion) at the other end.
- the portion 133 A of the electrode 133 is connected to the portion 137 B of the electrode 137-1 of the plurality of electrodes 137 using the through electrode 135-1 of the plurality of through electrodes 135.
- the portion 133 B of the electrode 133 is connected to the portion 137 A of the electrode 137-2 of the plurality of electrodes 137 using the through electrode 135-2 of the plurality of through electrodes 135.
- the above connection is repeated for the other electrode 133, the other through electrode 135, and the other electrode 137.
- the coil antenna 130 is configured as one connected wire. (Specifically, it is connected as in one-stroke writing and configured as one antenna). At this time, it can be said that the coil antenna 130 has a helical shape as a whole.
- FIG. 4A shows a configuration example of the IC chip 110. As shown in FIG.
- the IC chip 110 can mainly include a voltage limit circuit 111, a rectifier circuit 113, a demodulation circuit 115, a modulation circuit 117, a control circuit 119, a storage portion 121, a resistor 123, and the like. Furthermore, the IC chip 110 may include a capacitance for resonance frequency adjustment.
- the voltage limit circuit 111 has a function of protecting the IC chip 110 from a voltage input when an excessive voltage is induced in the coil antenna 130. When an excessive voltage is induced, an unnecessary portion of the generated current is converted to heat using the resistor 123 and released to the outside.
- the rectifier circuit 113 has a function of converting alternating current induced in the coil antenna 130 into direct current.
- the power supply voltage that has become direct current by the rectifier circuit 113 is supplied to all the circuits that make up the IC tag 100.
- the demodulation circuit 115 has a function of converting the information (signal) superimposed on the carrier wave input from the reader / writer 300 into a 1 or 0 signal sequence.
- the control circuit 119 has a function of controlling transmission / reception between the reader / writer 300, interpreting an instruction, reading information from the storage unit 121, writing to the storage unit 121, and the like.
- the control circuit 119 is composed of various logic circuits.
- a CPU Central Processing Unit
- control circuit 119 generates a response to the command received from the reader / writer 300 and sends this data to the modulation circuit 117.
- the modulation circuit 117 modulates the carrier wave based on the data to be transmitted to generate a signal for transmission.
- the generated signal is transmitted from coil antenna 130 as a carrier wave.
- the storage unit 121 includes a memory device for storing data.
- the storage unit 121 stores unique information and various rewritable information.
- FIG. 4B shows a configuration example of the reader / writer 300.
- the reader / writer 300 includes a control circuit 310, a storage unit 313, a modulation circuit 320, a transmission circuit 330, an antenna 340, a reception circuit 350, a demodulation circuit 360, an oscillation circuit 370, and the like.
- the control circuit 310 controls the entire reader / writer 300, interprets received data and commands, writes data to the storage unit 313, reads data from the storage unit 313, and responds to the received instruction. And so on.
- the modulation circuit 320 superimposes and modulates the instruction and data sent from the control circuit 310 on the carrier wave generated by the oscillation circuit 370.
- the modulated carrier wave is sent to the transmission circuit 330, which amplifies the signal, attenuates unnecessary frequencies, etc., and takes out only the frequency to be transmitted.
- the signal thus processed is transmitted to the IC tag 100 via the antenna 340.
- the receiving circuit 350 has a function of receiving a carrier wave transmitted from the IC tag 100 received by the antenna 340.
- the receiver circuit 350 removes noise contained in the carrier wave and amplifies the necessary signal.
- the amplified signal is sent to the demodulation circuit 360 and demodulated into necessary instructions and data.
- the oscillator circuit 370 has a function of generating a carrier wave necessary for communication. For example, a high frequency of 13.56 MHz is generated as a carrier wave.
- FIG. 5 is a cross-sectional view for explaining the information identification method of the IC tag 100 when the reader / writer 300 is driven.
- the reader / writer 300 is driven.
- the carrier wave 380 is sent from the reader / writer 300 to the coil antenna 130 of the IC tag 100.
- magnetic lines of force M130 are generated inside the ring of the coil antenna 130.
- the magnetic lines of force M130 cause electromagnetic induction and an induced electromotive force is supplied to the IC chip 110.
- the IC chip 110 is activated and transmission / reception with the reader / writer 300 becomes possible.
- FIG. 6 is a schematic view showing magnetic lines of force in the coil antenna 130. As shown in FIG. In FIG. 6, the coil antenna 130 has the above-described shape, so that the generated magnetic field lines M131 remain inside the coil antenna 130.
- FIG. 7 is a cross-sectional view for explaining the information identification method of the IC tag 100 when the reader / writer 300 is driven in a state where a plurality of IC tags 100 are stacked.
- FIG. 23 shows an example in which a conventional general IC tag 99 is overlapped. As shown in FIG. 23, when the general IC tag 99 is overlapped, mutual interference occurs due to the magnetic field M 99 generated from the IC tag 99 (specifically, the mutual inductance changes), so the resonance frequency changes. There is a case. In this case, the IC tag 99 may not be able to read the information of the IC tag 99 without generating an electromotive force.
- the through holes 147 are formed in the base material 145.
- a high resistance material is used for the substrate 145.
- a resin material such as glass and epoxy resin is used for the base material 145.
- the through holes 147 are formed on the base 145 by mechanical processing using a drill or the like.
- the diameter of the through hole 147 is not particularly limited, but is appropriately set in the range of 10 ⁇ m to 1000 ⁇ m.
- the through holes 147 may be formed by a laser irradiation method (which can be called a laser ablation method).
- a laser ablation method As the laser, an excimer laser, a neodymium: Yag laser (Nd: YAG) or the like is used.
- Nd neodymium: Yag laser
- the through holes 147 may be formed by photolithography and etching when a silicon substrate or a glass substrate is used.
- the through electrode 135 is formed in the through hole 147.
- Copper is used for the through electrode 135.
- the through electrode 135 may be formed by electrolytic plating or electroless plating.
- a copper thin film is formed on the side wall of the through hole 147 by sputtering.
- a copper film is formed by electrolytic plating.
- the copper film formed on the first surface 145A and the second surface 145B of the base material 145 is formed on the first surface 145A and the second surface 145B of the base material 145 by chemical mechanical polishing (CMP).
- CMP chemical mechanical polishing
- the electrode 133 is formed on the first surface 145A side of the base material 145. Copper is used for the electrode 133.
- the electrode 133 is formed by plating, for example.
- the following method may be used. First, a copper thin film (seed layer) is formed by sputtering. Next, after forming a resist film on the seed layer, the resist film is processed into a predetermined shape by photolithography or the like. Next, an electrode 133 is formed on the exposed seed layer. A copper film is formed on the electrode 133 by electrolytic plating. Finally, the resist film and the seed layer under the resist film are removed.
- the electrode 133 is not limited to the plating method, and may be formed by a printing method, sputtering, a CVD method, a coating method, or the like. At this time, the electrode 133 may be processed into a predetermined shape by a photolithography method and an etching method.
- the electrode 137 is formed on the second surface 145 B of the base material 145.
- the electrode 137 may be formed by the same material and method as the electrode 133.
- the coil antenna 130 is manufactured by the above method.
- this embodiment it is possible to provide an IC tag that can be read even when a plurality of sheets are stacked without using a chip inductor.
- the chip inductor is not used, the variation in performance depending on the chip inductor can be suppressed, and an IC tag with excellent quality can be provided.
- the plurality of first electrodes, the plurality of second electrodes, and the plurality of through electrodes are formed at one time by the above-described manufacturing method, it is possible to manufacture a coil antenna rather than manufacturing one by one using a winding machine or the like. Manufacturing tact can be improved.
- it can manufacture using the existing installation. Therefore, it is not necessary to newly provide equipment as compared with a winding machine used for manufacturing a coil antenna. Also, the manufacturing equipment may not have a high function. That is, the coil antenna can be manufactured using a general electronic component manufacturing apparatus.
- the coil antenna 130 can be controlled by the thickness of the base 145 by using the above manufacturing method. That is, the coil antenna 130 can be further reduced by reducing the thickness of the base 145. Therefore, by reducing the size of the coil antenna 130, the IC tag can be miniaturized and thinned.
- FIG. 12 is a top view of the IC tag 100-1.
- the electrode 137 and the through electrode 135 are not shown, but are omitted in the first embodiment.
- the first electrode 133-1, the electrode 137, and the through electrode 135 are connected so as to form one wiring as a whole.
- the electrode 133-1 includes an electrode 133-1-1 disposed outside and an electrode 133-1-2 disposed inside.
- the coil antenna 130-1 is formed using a loop antenna (sometimes called a first antenna) formed using the electrode 133-1-1 and the electrode 133-1-2.
- a loop antenna (sometimes referred to as a second antenna) disposed inside the first antenna in plan view.
- the first antenna and the second antenna are electrically connected in part.
- the coil antenna 130-1 can increase the number of turns as a whole of the coil antenna by including the electrode 133-1-1 and the electrode 133-1-2 disposed inside.
- the number N of turns of the coil, the magnetic flux ⁇ penetrating the coil, and the time t have the relationship of Formula 1. That is, since the number of turns of the coil can be increased, the induced electromotive force generated in the coil antenna 130-1 can be increased. This leads to the IC tag 100-1 increasing the sensitivity to the reader / writer 300.
- FIG. 13 is a top view of the IC tag 100-2.
- the electrode 137 and the through electrode 135 are not shown and are omitted.
- the electrode 133-2 has a serpentine shape.
- the electrode 137 may have a meandering shape as well. Thereby, the capacitance between the electrodes can be increased in at least one of the electrode 133-2 and the electrode 137.
- the inductance value L and the capacitance value C required for a specific resonance frequency f are in the relationship shown in Formula 2. Since the capacitance of the IC tag 100-2 can be increased based on Equation 2, the inductance value L can be lowered.
- the manufacturing accuracy of a coil antenna can be lowered by using this embodiment.
- the IC tag including the above-mentioned coil antenna can be manufactured even if a manufacturing apparatus with low specification is used, and the manufacturing cost can be reduced.
- FIG. 14 is a top view of the IC tag 100-3 and a cross-sectional view of A1-A2 of the coil antenna 130-3.
- the IC chip 110 is electrically connected to the coil antenna 130-3.
- the coil antenna 130-3 is arranged in a loop.
- a plurality of electrodes 151 are provided between A1 and A2.
- the electrode 151-1 is disposed on the first surface 145A of the base 145.
- the insulating layer 153-1 is disposed on the base 145 and the electrode 151-1.
- the electrode 151-2 is disposed on the insulating layer 153-1.
- the insulating layer 153-2 is disposed on the insulating layer 153-1 and the electrode 151-2.
- the electrode 151-3 is disposed on the insulating layer 153-2.
- the insulating layer 153-3 is disposed on the insulating layer 153-2 and the electrode 151-3.
- the electrode 151-4 is disposed on the insulating layer 153-3.
- the insulating layer 153-4 is disposed on the insulating layer 153-3 and the electrode 151-4.
- the electrode 151-5 is disposed on the insulating layer 153-4.
- the insulating layer 153-5 is disposed on the insulating layer 153-4 and the electrode 151-5.
- the electrode 151-6 is disposed on the insulating layer 153-5.
- the insulating layer 153-6 is disposed on the insulating layer 153-5 and the electrode 151-6.
- the electrode 133 is disposed on the insulating layer 153-6.
- the plurality of through electrodes 155 connect each of the plurality of electrodes 151.
- the through electrode 155-1 connects the electrode 151-3 and the electrode 151-4.
- the through electrode 155-2 connects the electrode 151-3 and the electrode 151-5.
- the through electrode 155-3 connects the electrode 151-2 and the electrode 151-5.
- the through electrode 155-4 connects the electrode 151-2 and the electrode 151-6.
- the through electrode 155-5 connects the electrode 151-1 and the electrode 151-6.
- the through electrode 155-6 connects the electrode 151-1 and the electrode 133 (corresponding to the portion 133A in FIG. 3).
- the through electrodes 155-1 to 155-6 are disposed in at least one of the insulating layers 153-1 to 153-6.
- the electrode 151-4 is connected to the electrode 133 (corresponding to the portion 133B in FIG. 3) by a through electrode (not shown).
- the coil antenna 130-3 has a spiral shape in a cross sectional view. By having this shape, the inductance can be increased in a small area.
- FIG. 15 is a perspective view of the IC tag 100-4.
- FIG. 16 is a schematic cross-sectional view showing a part of the coil antenna 130-4 of the IC tag 100-4.
- coil antenna 130-4 includes antenna 130-4-1 and antenna 130-4-2.
- the antenna 130-4-1 is disposed on the base material 145-4-1 and has a loop shape.
- the antenna 130-4-2 is disposed on the base material 145-4-2 and has a loop shape.
- the antenna 130-4-1 and the antenna 130-4-2 are disposed to overlap with each other.
- An insulating layer 160 is disposed between the base 145-4-1 and the base 145-4-2.
- the material of the insulating layer 160 is not particularly limited, but an inorganic insulating material, an organic insulating material, or one containing an inorganic insulating material and an organic insulating material may be used.
- an inorganic insulating material for the insulating layer 160, a plastic molding material containing an epoxy resin on a fibrous glass base may be used.
- An adhesive may be provided between the base 145-1-1 and the base 145-4-2 and the insulating layer 160.
- the antenna 130-4-1 has a plurality of electrodes 133-4-1, a plurality of electrodes 137-4-1, and a plurality of through electrodes 135-4-1.
- the portion 133-4-1A of the electrode 133-4-1 is connected to the portion 137-4-1B of one electrode 137-4-1 via the one through electrode 135-4-1.
- the portion 133-4-1B of the electrode 133-4-1 is connected to the portion 137-4-1A of the other electrode 137-4-1 via the other through electrode 135-4-1 .
- the antenna 130-4-2 includes a plurality of electrodes 133-4-2, a plurality of electrodes 137-4-2 and a plurality of through electrodes 135-4-2.
- the portion 133-4-2A of the electrode 133-4-2 is connected to the portion 137-4-2B of one electrode 137-4-2 via the one through electrode 135-4-2.
- the portion 133-4-2B of the electrode 133-4-2 is connected to the portion 137-4-2A of the other electrode 137-4-2 via the other through electrode 135-4-2 .
- the electrode 133-4-3 disposed on the first surface 145-4-1A of the substrate 145-4-1 and the electrode 137- disposed on the second surface 145-4-2B of the substrate 145-4-2 4-3 is connected via the through electrode 135-4-3. That is, the antenna 130-4-1 and the antenna 130-4-2 are partially connected.
- two coil antennas shown in FIG. 1 and FIG. 3 are stacked to form one coil antenna.
- the number of turns can be increased as the whole coil antenna, the induced electromotive force can be increased.
- the outer diameter can be reduced while maintaining the aperture area of the coil antenna large. Therefore, the sensitivity of the coil antenna can be enhanced while reducing the shape of the IC tag.
- FIG. 17 is a view for explaining a portable medium on which the IC tag 100 is mounted.
- the IC tag 100 is used, for example, in various situations such as product management, personal identification, security measures, electronic tickets, game cards, and commerce decisions.
- FIG. 17A is a schematic view of a coin 1000.
- FIG. 17B is a schematic view of the playing card 2000.
- FIG. 17C is a schematic view of an ID (Identification) card 3000.
- FIG. 18 is a top view of the IC tag 100-5.
- the IC tag 100-5 includes an IC chip 110, a coil antenna 130-5, and a substrate 145.
- the IC chip 110 and the coil antenna 130-5 are provided on the base 145.
- the coil antenna 130-5 may have a rectangular shape in plan view.
- the IC tag 100 may further include a shielding material.
- FIG. 19 is a top view of the IC tag 100-6 and a top view of the shield 180.
- FIG. 20 is a cross-sectional view taken along the line A1-A2 of the IC tag 100-6.
- the shield 180 is annular, but has a notch. (This makes it possible to say that the shield 180 has a shape like C.)
- the IC tag 100-6 has the insulating layer 170 (insulating layer 170 on the first surface 145 A side of the base 145). -1) and the shield 180 (shield 180-1).
- the IC tag 100-6 includes the insulating layer 170 (insulating layer 170-2) and the shield 180 (shield 180-2) on the second surface 145B side of the base 145. At this time, it can be said that the shield 180 is disposed so as to be superimposed on the coil antenna 130.
- a material similar to that of the insulating layer 160 is used for the insulating layer 170 (the insulating layer 170-1 and the insulating layer 170-2).
- a magnetic material is used for the shield 180 (the shield 180-1 and the shield 180-2).
- a magnetic substance having magnetism such as iron (Fe), nickel (Ni), cobalt (Co), ferrite, etc. is used.
- the shield 180 is not limited to a magnetic material, and a conductor such as copper (Cu) or aluminum (Al) may be provided.
- the shielding body 180 may be arrange
- FIG. 21 is a cross-sectional view in the case where a plurality of IC tags 100-6 are stacked.
- the IC tag 100-6 has a shield 180 to shield the magnetic field emitted by each coil antenna 130. Even when a plurality of sheets are stacked, mutual interference is prevented. Thus, even when a plurality of IC tags are stacked, information of the IC tag can be read stably.
- the through electrode is formed by plating, but is not limited thereto.
- a wiring pattern is formed of a highly spreadable material such as aluminum on the first surface 145A and the second surface 145B of the base 145, and pressure is physically applied from both sides of the first surface 145A and the second surface 145B at the opening.
- the first electrode and the second electrode may be connected by providing a connection portion to be a through electrode by caulking (sometimes called caulking).
- FIG. 22 is a top view of the IC tag 100-7.
- the IC tag 100-7 includes an IC chip 110, a coil antenna 130-7 and a support 149.
- the support 149 is used to support the form of the coil antenna 130-7 and may not necessarily be provided.
- the coil antenna 130-7 has a helical shape in the circumferential direction.
- the coil antenna 130-7 may be formed using a winding machine. Also in the IC tag 100-7, the magnetic field generated by the coil antenna 130-7 does not go outside, so even when a plurality of IC tags 100-7 are stacked, reading of the IC tag is possible.
- IC tag 110: chip, 111: voltage limit circuit, 113: rectification circuit, 115: demodulation circuit, 117: modulation circuit, 119: control circuit, 121 ... Storage part, 123 ... Resistance, 130 ... Antenna part, 133 ... Electrode, 135 ... Through electrode, 137 ... Electrode, 140 ... Support part, 145 ...
- Base Material 149: support, 151: electrode, 153: insulating layer, 155: penetrating electrode, 160: insulating layer, 170: insulating layer, 180: shield, 300: reader / writer, 310: control circuit, 313: storage unit, 320: modulation circuit, 330: transmission circuit, 340: antenna, 350: reception circuit, 360 ... Demodulation circuit, 370 ... Oscillator circuit, 380 ... ⁇ Carrier, 1000 ⁇ ⁇ ⁇ coin, 2000 ⁇ ⁇ ⁇ Trump, 3000 ⁇ ⁇ ⁇ ID (Identification) card
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Abstract
Description
以下、本発明の一実施形態の携帯型無線通信装置(以下、ICタグと記す)およびICタグを含む情報識別装置について説明する。
図1に示すように、ICタグ100は、ICチップ110、コイルアンテナ130、支持部140、および基材145を含む。ICチップ110およびコイルアンテナ130は、基材145に設けられる。ICチップ110とコイルアンテナ130とは、一部において電気的に接続される。
図2は、ICタグ100の上面図およびコイルアンテナ130のA1-A2間の断面図である。図3は、コイルアンテナ130の斜視図である。コイルアンテナ130は、電磁誘導方式のアンテナであり、ループ状に配置されている。コイルアンテナ130は、平面視において円形状を有する。コイルアンテナ130に囲まれた領域を通過する磁束密度の変化に応じた大きさの起電力(電圧)がコイルアンテナ130に発生する。この起電力はコイルアンテナ130に電気的に接続されたICチップ110に与えられ、ICチップ110が駆動する。コイルアンテナ130は、例えば短波(HF)や極超短波(UHF)の周波数帯域で共振するように構成される。具体的には、短波は13.56MHzの周波数帯域に相当する。また、極超短波は、860~960MHzの周波数帯域に相当する。
次に、図4(A)に、ICチップ110の構成例を示す。
図4(B)にリーダ/ライタ300の構成例を示す。リーダ/ライタ300は、制御回路310、記憶部313、変調回路320、送信回路330、アンテナ340、受信回路350、復調回路360、および発振回路370などを含む。
次に、情報識別装置10の動作について説明する。図5は、リーダ/ライタ300を駆動させたときのICタグ100の情報識別方法を説明する断面図である。
次に、コイルアンテナ130の製造方法について図8乃至図11を用いて説明する。
本実施形態では、第1実施形態と形態の異なるコイルアンテナを有する携帯型無線通信装置について説明する。
本実施形態では、第1実施形態および第2実施形態とは異なる形態を有するコイルアンテナを含む携帯型無線通信装置について説明する。
本実施形態では、第1実施形態乃至第3実施形態とは異なる形態を有するコイルアンテナを含む携帯型無線通信装置について説明する。
なお、本発明の第1実施形態においては、平面視において円形状を有するICタグについて説明したが、これに限定されない。図18は、ICタグ100-5の上面図である。ICタグ100-5は、ICチップ110、コイルアンテナ130-5、基材145を含む。ICチップ110、およびコイルアンテナ130-5は基材145に設けられる。図18に示すように、コイルアンテナ130-5は、平面視において矩形の形状を有してもよい。
また、ICタグ100は、さらに遮蔽材を有してもよい。図19は、ICタグ100-6の上面図および遮蔽体180の上面図である。図20は、ICタグ100-6のA1-A2間の断面図である。図19(B)に示すように、遮蔽体180は、環状であるが、一部切り欠きを有する。(これにより、遮蔽体180は、Cのような形状を有するということができる。)図20において、ICタグ100-6は、基材145の第1面145A側に絶縁層170(絶縁層170-1)および遮蔽体180(遮蔽体180-1)を含む。また、ICタグ100-6は、基材145の第2面145B側に絶縁層170(絶縁層170-2)および遮蔽体180(遮蔽体180-2)を含む。このとき、遮蔽体180はコイルアンテナ130に重畳して配置されているということができる。絶縁層170(絶縁層170-1および絶縁層170-2)には、絶縁層160と同様の材料が用いられる。遮蔽体180(遮蔽体180-1および遮蔽体180-2)には、磁性体材料が用いられる。具体的には、遮蔽体180として、鉄(Fe)、ニッケル(Ni)、コバルト(Co)、フェライトなど、磁性を有する磁性体が用いられる。遮蔽体180には、磁性体に限定されず、銅(Cu)、アルミニウム(Al)などの導電体が設けられてもよい。なお、遮蔽体180は、第1面145Aおよび第2面145Bのいずれかに配置されてもよい。
本発明の第1実施形態において、貫通電極は、めっき法により形成される例を示したが、これに限定されない。例えば、基材145の第1面145Aおよび第2面145Bにアルミニウムなどの展延性の高い材料で配線パターンを形成し、開口部において第1面145Aおよび第2面145Bの両側から物理的に圧力をかける(かしめるという場合がある)ことにより、貫通電極となる接続部分を設けて第1電極と第2電極とが接続されてもよい。
本発明の第1実施形態~第4実施形態では、絶縁性基材に上部電極、下部電極、および貫通電極を有するコイルアンテナについて説明したが、これに限定されない。図22は、ICタグ100-7の上面図である。ICタグ100-7は、ICチップ110、コイルアンテナ130-7および支持体149を含む。なお、支持体149は、コイルアンテナ130-7の形態を支持するために用いられるものであり、必ずしも設けられなくてもよい。
Claims (18)
- 第1面および前記第1面の反対側の第2面を有する絶縁性基材と、
前記絶縁性基材にループ状に配置されたコイルアンテナと、
前記コイルアンテナと電気的に接続されたICチップと、を含み、
前記コイルアンテナは、前記絶縁性基材の前記第1面側に配置され、第1部分および第2部分を有する複数の第1電極、前記絶縁性基材の前記第2面側に配置され、第3部分および第4部分を有する複数の第2電極、および前記絶縁性基材内に配置された複数の貫通電極を含み、
前記複数の第1電極のうち一つの第1電極の前記第1部分は、前記複数の貫通電極のうち一つの貫通電極を用いて、前記複数の第2電極のうち一つの第2電極の前記第4部分と接続され、
前記複数の第1電極のうち前記一つの第1電極の前記第2部分は、前記複数の貫通電極のうち他の一つの貫通電極を用いて、前記複数の第2電極のうち他の一つの第2電極の前記第3部分と接続される、
携帯型無線通信装置。 - 前記複数の第1電極および前記複数の第2電極の少なくともいずれかは蛇行形状を有する、
請求項1に記載の携帯型無線通信装置。 - 前記コイルアンテナは、ループ状の第1アンテナと、平面視において第1アンテナの内側に配置されたループ状の第2アンテナとを含み、前記第1アンテナと前記第2アンテナとは一部において接続される、
請求項1に記載の携帯型無線通信装置。 - 前記コイルアンテナは、ループ状の第1アンテナと、前記第1アンテナに重畳して配置されたループ状の第2アンテナとを含み、前記第1アンテナと前記第2アンテナとは一部において接続される、
請求項1に記載の携帯型無線通信装置。 - 前記コイルアンテナに重畳して配置された遮蔽体を含む、
請求項1に記載の携帯型無線通信装置。 - 前記コイルアンテナは、平面視において円形状を有する、
請求項1に記載の携帯型無線通信装置。 - 前記コイルアンテナは、平面視において矩形の形状を有する、
請求項1に記載の携帯型無線通信装置。 - ループ状に配置されたコイルアンテナと、
前記コイルアンテナと電気的に接続されたICチップと、を含み、
前記コイルアンテナは、周回方向に螺旋形状を有する、
携帯型無線通信装置。 - 前記コイルアンテナは、ループ状の第1アンテナと、平面視において第1アンテナの内側に配置されたループ状の第2アンテナとを含み、前記第1アンテナと前記第2アンテナとは一部において接続される、
請求項8に記載の携帯型無線通信装置。 - 前記コイルアンテナは、ループ状の第1アンテナと、前記第1アンテナに重畳して配置されたループ状の第2アンテナとを含み、前記第1アンテナと前記第2アンテナとは一部において接続される、
請求項8に記載の携帯型無線通信装置。 - 前記コイルアンテナに重畳して配置された遮蔽体を含む、
請求項8に記載の携帯型無線通信装置。 - 前記コイルアンテナは、平面視において円形状を有する、
請求項8に記載の携帯型無線通信装置。 - 前記コイルアンテナは、平面視において矩形の形状を有する、
請求項8に記載の携帯型無線通信装置。 - 第1面および前記第1面の反対側の第2面を有する絶縁性基材と、
前記絶縁性基材にループ状に配置されたコイルアンテナと、
前記コイルアンテナと電気的に接続されたICチップと、を含み、
前記コイルアンテナは、
前記絶縁性基材の前記第1面または前記第2面上に配置され、複数の絶縁層、複数の電極、および前記複数の絶縁層に配置され、前記複数の電極の各々を接続する複数の貫通電極を含み、断面視において渦巻き形状を有する、
携帯型無線通信装置。 - 前記コイルアンテナに重畳して配置された遮蔽体を含む、
請求項14に記載の携帯型無線通信装置。 - 前記コイルアンテナは、平面視において円形状を有する、
請求項14に記載の携帯型無線通信装置。 - 前記コイルアンテナは、平面視において矩形の形状を有する、
請求項14に記載の携帯型無線通信装置。 - 一以上の請求項1乃至17のいずれか一の携帯型無線通信装置と、リーダ/ライタと、を含む情報識別装置。
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| CN201880082795.1A CN111492536A (zh) | 2017-12-28 | 2018-11-01 | 便携式无线通信装置及使用便携式无线通信装置的信息识别装置 |
| KR1020207021253A KR102382309B1 (ko) | 2017-12-28 | 2018-11-01 | 휴대형 무선 통신 장치 및 휴대형 무선 통신 장치를 이용한 정보 식별 장치 |
| SG11202005644WA SG11202005644WA (en) | 2017-12-28 | 2018-11-01 | Portable wireless communication device, and information identification apparatus using portable wireless communication device |
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| CN111492536A (zh) | 2020-08-04 |
| KR102382309B1 (ko) | 2022-04-04 |
| JP6781145B2 (ja) | 2020-11-04 |
| JP2019121849A (ja) | 2019-07-22 |
| KR20200098675A (ko) | 2020-08-20 |
| PH12020550900A1 (en) | 2021-03-22 |
| SG11202005644WA (en) | 2020-07-29 |
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