Source: https://patents.google.com/patent/CN109888499A/en
Timestamp: 2019-12-09 21:26:07
Document Index: 634484403

Matched Legal Cases: ['art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 32', 'art 124', 'art 124', 'art) 400']

CN109888499A - Wireless IC device - Google Patents
CN109888499A
CN109888499A CN201910164054.4A CN201910164054A CN109888499A CN 109888499 A CN109888499 A CN 109888499A CN 201910164054 A CN201910164054 A CN 201910164054A CN 109888499 A CN109888499 A CN 109888499A
CN201910164054.4A
2014-04-28 Priority to JP2014092643 priority Critical
2014-04-28 Priority to JP2014-092643 priority
2014-06-20 Priority to JP2014126813 priority
2014-06-20 Priority to JP2014-126813 priority
2014-10-31 Priority to JP2014-222167 priority
2014-10-31 Priority to JP2014222167 priority
2015-04-21 Application filed by 株式会社村田制作所 filed Critical 株式会社村田制作所
2015-04-21 Priority to CN201580017036.3A priority patent/CN106134000B/en
2019-06-14 Publication of CN109888499A publication Critical patent/CN109888499A/en
The present invention provides a kind of Wireless IC devices that can improve fastness and gain.Column (20) covers metallic object by insulating film and is formed.Cricoid antenna conductor (12) is arranged via the pedestal (18) of insulating properties in the upper surface of column (20).The circumferentia of antenna conductor (12) is roughly parallel to the upper surface of column (20).Two terminal electrodes are set on the lower surface of RFIC element (14).RFIC element (14) is mounted on antenna conductor (12), connect the two terminal electrodes with the both ends of antenna conductor (12) (1201,1202) respectively.One end (1601) of connection conductor (16) is connected near one end (1201) of antenna conductor (12), and the other end (1602) of connection conductor (16) is connected the upper surface of column (20).
The application be the applying date be on April 21st, 2015, application No. is " 201580017036.3 (PCT/JP2015/ 062030) ", the invention of entitled " article of Wireless IC device, clip-like RFID label tag and subsidiary RFID label tag " it is special The divisional application of benefit application.
The present invention relates to Wireless IC device, be related to by RFIC (Radio Frequency Integration Circuit: Radio frequency identification circuit) element is mounted on the Wireless IC device constituted on the object with metallic object.The invention further relates to Clip-like RFID (Radio Frequency Identifier: radio frequency identification) label, is related to the conductor portion relative to article Divide the clip-like RFID label tag freely loaded and unloaded.The invention further relates to having the article with conductor part, and relative to it The article of the subsidiary RFID label tag for the clip-like RFID label tag that conductor part freely loads and unloads.
The RFID label tag carried out wireless communication using UHF band is affixed directly into metallic object, then is sent from reader The electric field component of electric wave is zero on the surface of label, therefore can not carry out the read-write of label.The attaching rfid in metal object as a result, In the case where label, generally configure RFID label tag to leave metal covering.
It is related to this, in patent document 1, the RFID label tag pasted and there is coil antenna is disclosed, keeps its circumferentia vertical In the method for attaching of metal covering.According to this method, electric wave can not only be collected on the rfid labels, and metal covering can be used as hair Penetrate element, as a result, realize the RFID label tag (Wireless IC device) with larger gain.
In addition, according to patent document 2, the stored electrons data in the clip of the clamped media such as clamping paper.Electronic data Input and output can be carried out by applying the wireless communication of RFID.In addition, notifying auxiliary device packet according to patent document 3 Include the first antenna portion connecting with receiver；The second antenna part being connect with IC chip reader；And it is mounted with these antenna The ontology of the clip-like in portion.If notice auxiliary device is mounted on file, the second antenna part is rotated, then the second antenna part is to notice The lower section of auxiliary device is prominent, abuts with a part of file or close.Notify auxiliary device and the transmitting and receiving of IC chip warp It is smoothly executed by the second antenna part.
Patent document 1: International Publication No. 2009/008296
Patent document 2: Japanese Patent Laid-Open 2004-192287 bulletin
Patent document 3: Japanese Patent Laid-Open 2004-307209 bulletin
However, attaching rfid tag makes circumferentia perpendicular in the structure of the patent document 1 of metal covering, due to RFID label tag It is prominent from metallic object, therefore it is particularly unsuitable for the purposes (such as storage cylinder use) to labeling requirement fastness.
In addition, being easy by the way that RFID label tag is mounted on clip as patent document 2 or 3 from objects such as paper files RFID label tag is installed or removed on object.However, in the case that object is conductor, i.e., situation about being mounted on clip on conductor Under, in the technology of patent document 2 or 3, conductor hinders the communication characteristic (especially gain) of RFID label tag, exists and is unable to ensure The problem of enough communication distances.
Therefore, the main purpose of the present invention is to provide a kind of Wireless IC devices that can improve fastness and gain.
It is another object of the present invention to provide a kind of clip-like RFID label tag that can improve communication characteristic and it is attached to The article of RFID label tag.
Solve the technical solution of technical problem
Wireless IC device of the invention includes: object, which has metallic object；Ring-shaped conductor, the ring-shaped conductor With the first looped end and the second looped end；RFIC element, the RFIC element have respectively with the first looped end and second The first terminal electrode and second terminal electrode of looped end connection；And connection conductor, the connection conductor have respectively with ring Shape conductor and the first end and the second end of object connection, which is characterized in that first end is in the first looped end Nearby it is connect with ring-shaped conductor.
Preferably, ring-shaped conductor is arranged to its circumferentia along the surface of object.
Preferably, RFIC element include RFIC chip, the RFIC chip have respectively with first terminal electrode and second The first input and output terminal and the second input and output terminal of terminal electrode connection, the first input and output terminal and second defeated Enter 1/2 wavelength that the electrical length between output terminal is signal of communication, from using the second end as the distalmost end of the metallic object of basic point Electrical length to the first input and output terminal is 1/2 wavelength of signal of communication or more.
In one aspect, metallic object have the regulation marginal end portion different from the marginal end portion for being equivalent to distalmost end, second End is connect in regulation marginal end portion with object.
On the other hand, RFIC element also includes the power supply circuit between ring-shaped conductor and RFIC chip, first terminal Electrode and second terminal electrode are connect via power supply circuit with the first input and output terminal and the second input and output terminal.
Preferably, it is also equipped with the insulator in the formation of the surface of object, the second end connects via insulator and object It connects.
Clip-like RFID label tag of the present invention is the clip-like RFID mark freely loaded and unloaded relative to the conductor part of article Label, comprising: the clip of the clip of electric conductivity, the electric conductivity is installed in conductor part；Ring-shaped conductor, the ring-shaped conductor have the One looped end and the second looped end；RFIC element, the RFIC element have respectively with the first looped end and the second looped end The first terminal electrode and second terminal electrode of connection；And connection conductor, the connection conductor have the connect with clip One end and the second end being connect near the first looped end with ring-shaped conductor.
Preferably, the first end of conductor is connected in the position that the fulcrum of clip is opposite with the position of clip as benchmark It sets and is connect with clip.
Preferably, RFIC element include RFIC chip, the RFIC chip have respectively with first terminal electrode and second The first input and output terminal and the second input and output terminal of terminal electrode connection, the first input and output terminal and second defeated Enter 1/2 wavelength that the electrical length between output terminal is signal of communication, from the front end of clip to the electricity of the first input and output terminal Length is less than 1/2 wavelength of signal of communication.
The article of subsidiary RFID label tag of the present invention includes the article of conductor part, and relative to conductor portion Divide the clip-like RFID label tag freely loaded and unloaded, which is characterized in that clip-like RFID label tag includes the clip of electric conductivity, the electric conductivity Clip is installed in conductor part；Ring-shaped conductor, the ring-shaped conductor have the first looped end and the second looped end；RFIC member Part, the RFIC element have the first terminal electrode and Second terminal connecting respectively with the first looped end and the second looped end Electrode；And connection conductor, the connection conductor have the first end that connect with clip and near the first looped ends and ring The second end of shape conductor connection.
The electric current for flowing through ring-shaped conductor reaches maximum near looped end.As a result, by connection ring-shaped conductor and right As being connected to connection conductor near looped end, maximize the electric current for the metallic object for flowing through object, in turn Improve gain.In addition, by the way that the surface for making circumferentia along object is arranged on object in ring-shaped conductor, to improve nothing The fastness of line IC device.
The magnitude of current (current density) for flowing through ring-shaped conductor reaches maximum near looped end.As a result, by connecting It is connected to connection conductor near looped end, maximizes the magnitude of current for flowing through clip, into And maximize the magnitude of current for flowing through the conductor part for the article for being mounted with clip.The conductor part of article is as emitter or hair It penetrates element to play a role, higher gain can be obtained.Thus communication characteristic is improved.
Above-mentioned purpose of the invention, other objects, features and advantages carry out the detailed of embodiment below by referring to accompanying drawing Describe in detail it is bright can be clearer.
Fig. 1 is the perspective view for indicating basic structure of the invention.
Fig. 2 is the perspective view for indicating an example of the state of the Wireless IC device of embodiment 1 from oblique upper.
Fig. 3 is the top view for indicating the state of the Wireless IC device of embodiment 1 from surface.
Fig. 4 is the schematic thinking of the end for indicating connection conductor and the connection status of column.
Fig. 5 is the schematic thinking for indicating an example of the structure of RFIC element of the Wireless IC device suitable for embodiment 1.
Fig. 6 is the circuit diagram for indicating the equivalent circuit of Wireless IC device of embodiment 1.
Fig. 7 is the circuit diagram for indicating the equivalent circuit of the Wireless IC device of variation of embodiment 1.
Fig. 8 is the perspective view for indicating an example of the state of the Wireless IC device of embodiment 2 from oblique upper.
Fig. 9 is the exploded perspective view for the RFIC element for indicating antenna conductor and being installed on it.
Figure 10 is the schematic thinking for indicating the connection status of fixed part and column of antenna conductor.
Figure 11 (A) is the schematic thinking for indicating a part of process of production antenna conductor, and Figure 11 (B) is to indicate production antenna conductor Process another part schematic thinking, Figure 11 (C) is the schematic thinking a part of again for indicating the process of production antenna conductor, figure 11 (D) are the schematic thinkings of the remaining a part for the process for indicating to be mounted on RFIC chip on antenna conductor.
Figure 12 (A) is the top view for indicating the state of clip-like RFID label tag of the embodiment 3 from surface, and Figure 12 (B) is table Show the side view of the state of the clip-like RFID label tag of the embodiment 3 from positive side.
Figure 13 is the figure for indicating the ring-shaped conductor of the clip-like RFID label tag suitable for embodiment 3 and connecting the connection status of conductor Xie Tu.
Figure 14 is the figure for indicating the connection status of RFIC element and ring-shaped conductor of the clip-like RFID label tag suitable for embodiment 3 Xie Tu.
Figure 15 is the sectional view for indicating the structure of RFIC element of the clip-like RFID label tag suitable for embodiment 3.
Figure 16 is the circuit diagram for indicating the equivalent circuit of RFIC element of the clip-like RFID label tag suitable for embodiment 3.
Figure 17 (A) is to indicate the clip-like RFID label tag of the embodiment 3 from surface and the state for being mounted with the pallet of the label Top view, Figure 17 (B) is the clip-like RFID label tag for indicating the embodiment 3 from positive side and the pallet for being mounted with the label The side view of state.
Figure 18 is to indicate to be observed from the front the clip-like RFID label tag of embodiment 3 and be mounted with the state of the hole clip notebook of the label Front elevation.
Figure 19 is the perspective view for indicating the binder clip of overlooking state.
Figure 20 is the perspective view for indicating the circular hole folder of overlooking state.
Referring to Fig.1, Wireless IC device 1 of the invention, be typically using UHF band as the RFID device of communication frequency, by Ring-shaped conductor 2, RFIC element 3, connection conductor 4 and metallic object 5 are constituted.The column that metallic object 5 is square, ring-shaped conductor 2, RFIC element 3 and connection conductor 4 are arranged on the upper surface of metallic object 5.
Specifically, ring-shaped conductor 2 is configured as being roughly parallel to the state of the upper surface of metallic object 5 with its circumferentia, And with the upper surface of metallic object 5 only separated by fine distance.In other words, ring-shaped conductor 2 is with its circumferentia along the upper table of metallic object 5 The state in face is configured in the top of metallic object 5, and does not contact metallic object 5.
In the inside of RFIC element 3, embedment is provided with the RFIC of the first input and output terminal and the second input and output terminal Chip (not shown), RFIC element 3 lower surface setting respectively with the first input and output terminal and the second input/output terminal The first terminal electrode and second terminal electrode (not shown) of son connection.One end of first terminal electrode and ring-shaped conductor 2 (the first looped end) 201 connects, and second terminal electrode is connect with the other end (the second looped end) 202 of ring-shaped conductor 2.Connection is led One end (first end) 401 of body 4 is connected near one end 201 of ring-shaped conductor 2, connects the other end (second of conductor 4 End) 402 be connected metallic object 5 upper surface specified position (regulation marginal end portion).
In addition, about it is above-mentioned " near ", if by the length (electrical length) from one end of ring-shaped conductor 2 201 to the other end 202 It is set as A, then connects conductor 4 and is preferably connect in the range of length is A/4 since one end 201 with ring-shaped conductor 2, further Preferably it is connect in the range of length is A/8 since one end 201 with ring-shaped conductor 2.
Electrical length quilt between the first input and output terminal and the second input and output terminal being arranged in RFIC chip It is adjusted to λ/2.In addition, the height (distance from upper surface to lower surface) of metallic object 5 is adjusted to λ/2 or more.Connect conductor 4 The other end 402 be connected metallic object 5 upper surface specified position, therefore from the metallic object by specified position as basic point The electrical length of 5 distalmost end to the first input and output terminal also reaches λ/2 or more.
When sending high-frequency signal from RFIC element 3, electric current I flows through ring-shaped conductor 2 with the mode of λ/4, using electric current I as base Plinth, electric current I ' flow through metallic object 5 with the mode of λ/2.That is, ring-shaped conductor 2 plays a role as vibration excitor or exciting annulus, metal Body 5 plays a role as emitter.
Here, one end 401 and electric current I for flowing through ring-shaped conductor 2 for connecting conductor 4 reaches maximum point and connects.Therefore, make The electric current I ' for flowing through metallic object 5 is also maximized, and then improves high-frequency transmission performance (greatly improving the gain as IC device). In addition, the circumferentia of ring-shaped conductor 2 is roughly parallel to the upper surface of metallic object 5.Therefore, ring-shaped conductor 2 is not from the upper of metallic object 5 Surface substantially protrudes, and can improve the fastness of Wireless IC device 1.
Referring to Fig. 2 and Fig. 3, the Wireless IC device 10 of embodiment 1 is by cricoid antenna conductor 12, the RFIC of rectangular-shape The pedestal (spacer) 18 and rectangular 20 structure of column of the insulating properties of element 14, band-like connection conductor 16, formation plate At.In embodiment 1, width direction, depth direction and the short transverse of column 20 respectively correspond X-axis, Y-axis and Z axis.
Pedestal 18 has the interarea of the upper surface less than column 20, and the state with the interarea perpendicular to Z axis is existed by placing The center of the upper surface of column 20.Antenna conductor 12 has the circumferentia of the interarea less than pedestal 18, vertical with the circumferentia In Z axis state by placing in the center of an interarea (upper surface) of pedestal 18.That is, antenna conductor 12 is parallel to circumferentia The state (with circumferentia along the state of the upper surface of column 20) of the upper surface of column 20 is arranged on far from column On 20 position.RFIC element 14 is less than antenna conductor 12, is installed in the top of antenna conductor 12, makes it across antenna conductor 12 one end (the first looped end) 1201 and the other end (the second looped end) 1202.
As shown in Figure 5, RFIC element 14 is configured to the RFIC chip 14e comprising processing RFID signal and installs the chip Power supply circuit substrate 14c.Power supply circuit substrate 14c forms plate using ceramics or resin as material.The built-in storage of RFIC chip 14e Latch circuit and signal processing circuit etc., and sealed by the sealant 14d of resin.Distinguish the side of power supply circuit substrate 14c Perpendicular to X-axis and Y-axis, the side of sealant 14d and the side of power supply circuit substrate 14c form a face.
In the lower surface of RFIC element 14, terminal electrode 14a and the 14b (14a: first terminal along X-axis side by side are set Electrode, 14b: second terminal electrode).Terminal electrode 14a via electric conductivity grafting material 24a (material be solder etc.) and antenna One end 1201 of conductor 12 connects or engagement, terminal electrode 14b via electric conductivity grafting material 24b (material is solder etc.) with The other end 1202 of antenna conductor 12 connects or engagement.
Input and output terminal 14f and 14g are formed in the upper surface of power supply circuit substrate 14c.In addition, in RFIC chip The lower surface of 14e forms input and output terminal 14h and 14i (the 14h: the first input and output terminal, the 14i: the second input/output terminal Son).Input and output terminal 14f and 14g using electric conductivity (not shown) grafting material (material be Ag etc.), respectively with input Output terminal 14h and 14i connection or engagement.Input and output terminal 14h and 14i is via setting in power supply circuit substrate 14c Power supply circuit 14fct (referring to Fig. 6), connect respectively with terminal electrode 14a and 14b.
One end (first end) 1601 of connection conductor 16 is connected near one end 1201 of antenna conductor 12, is connected The other end (the second end) 1602 of conductor 16 is connected the specified position (regulation marginal end portion) of the upper surface of column 20. Referring to Fig. 4, column 20 is by solid or hollow metallic object 20m, and covers the insulating film 20i shape on the surface of metallic object 20m At.One end 1601 of connection conductor 16 is connect via the grafting material of the electric conductivity such as solder with antenna conductor 12, connects conductor 16 The other end 1602 engaged via the grafting material 22 of insulating properties with the upper surface of column 20.
In addition, about it is above-mentioned " near ", if (electricity is long by the length from one end of antenna conductor 12 1201 to the other end 1202 Degree) be set as A, then it connects conductor 16 and is preferably connect in the range of length is A/4 since one end 1201 with antenna conductor 12, It is further preferred that being connect in the range of length is A/8 since one end 1201 with antenna conductor 12.
The equivalent circuit of Fig. 6 expression Wireless IC device 10.Power supply circuit 14fct is arranged on power supply circuit substrate 14c. One end of capacitor C1 is connect with terminal electrode 14a, and the other end of capacitor C1 is connect with one end of inductor L2.Inductor L2 The other end connect with input and output terminal 14f and input and output terminal 14h.One end of capacitor C2 and terminal electrode 14b Connection, the other end of capacitor C1 is connect with input and output terminal 14g, and then is connect with input and output terminal 14i.In addition, electric One end of sensor L1 is connect with the other end of capacitor C1, and the other end of inductor L1 is connect with the other end of capacitor C2.
In addition, inductor L0 is the inductive component of antenna conductor 12, inductor L1 and inductor L2 are magnetically coupled.In addition, There is grafting material 22 and insulating film based on insulating properties between the other end 1602 and metallic object 20m of connection conductor 16 The capacitive component of 20i.Capacitor C0 is the capacitive component.It, can be in width using the inductor L0 and capacitor C0 formed in this way It is matched in frequency band.
Electrical length between two input and output terminals 14h and 14i of RFIC chip 14e setting is adjusted to λ/2. In addition, the height (distance from upper surface to lower surface) of metallic object 20m is adjusted to λ/2 or more.Connect the another of conductor 16 End 1602 is connected the specified position of the upper surfaces of column 20, therefore from the metallic object 20m by specified position as basic point The electrical length of distal end to input and output terminal 14h also reach λ/2 or more.
When sending high-frequency signal from RFIC element 14, the electric current I ' based on the electric current I for flowing through antenna conductor 12 flows through Column 20.At this moment, the position near the both ends 1201,1202 of antenna conductor 12 becomes maximum current point, antenna conductor 12 Position (position farthest from RFIC element 14) near center becomes maximum voltage point.Antenna conductor 12 is used as first as a result, Radiated element (vibration excitor or exciting annulus) plays a role.
In addition, when antenna conductor 12 is connect with column 20, by the other end 1602 and column that will connect conductor 16 The specified position of the upper surface of body 20 connects, therefore electric current I ' easily flows through the side of metallic object 20m, and column 20 is used as second Radiated element plays a role.
Further, the one end 1601 for connecting conductor 16 is connect with the maximum current of antenna conductor 12 point, therefore flows through column The electric current I ' of shape body 20 is also maximized.Improve high-frequency transmission performance (greatly improving the gain as Wireless IC device) as a result,.
In addition, the circumferentia of antenna conductor 12 is roughly parallel to the upper surface of column 20, therefore antenna conductor 12 will not It is significantly protruded from the upper surface of column 20.The fastness of Wireless IC device 10 can be improved as a result,.
In addition, being provided with power supply circuit 14fct shown in fig. 6 in power supply circuit substrate 14c in embodiment 1, but can also save Slightly power supply circuit 14fct.In this case, equivalent circuit is configured to as shown in Figure 7.
In addition, connecting the other end 1602 of conductor 16 via the grafting material 22 and column 20 of insulating properties in embodiment 1 Upper surface engagement.But the other end 1602 for connecting conductor 16 can also be directly connected to metallic object 20m.
Further, in embodiment 1, RFIC element 14 seals RFIC chip 14e using with sealant 14d, to improve jail The structure of solidity.However, can also be constituted using RFIC bare die as RFIC element 14.
Referring to Fig. 8 and Fig. 9, the Wireless IC device 10a of embodiment 2 is by antenna conductor 32, RFIC element 14 and circle Column 30 formation.
Antenna conductor 32 is by annulus (ring-shaped conductor) 32lp, foot (a part of connection conductor) 32lg and fixed part The another part of conductor (connection) conductor made of 32fx is integrally formed.As described in detail below, by implementing to cuff-like material Punching processing and bending machining make antenna conductor 32.As a result, the interarea of annulus 321p and the interarea of fixed part 32fx It is unfolded in parallel to each other, the interarea of foot 32lg is unfolded perpendicular to the interarea of annulus 32lp or fixed part 32fx.
Annulus 32lp has one end (the first looped end) 32lp01 and other end (the second looped end) 32lp02, and draws The annulus more much smaller than the upper surface of column 30 (=perpendicular to the section of column axis) is made.At this moment, circumferentia is parallel to The interarea of annulus 32lp and be unfolded.
First end of one end 32lg01 of foot 32lg as connection conductor, is connected to one end of annulus 32lp Near 32lp01.The other end 32lg02 of foot 32lg is connect with fixed part 32fx.Fixed part 32fx is also depicted as annulus, foot The other end 32lg02 of portion 32lg is connect with one end of the annulus.The other end (the connection conductor for the annulus that fixed part 32fx is drawn The second end) specified position (regulation marginal end portion) of 32fx01 and the upper surface of column 30 connect.
In addition, about it is above-mentioned " near ", if the length (electricity of one end 32lp01 to other end 32lp02 from annulus 32lp Length) be set as A, then foot 32lg preferably connects in the range of length is A/4 since the 32lp01 of one end with annulus 32lp It connects, it is further preferred that being connect in the range of length is A/8 since the 32lp01 of one end with annulus 32lp.
Antenna conductor 32 is so mounted on the upper surface of column 30, in this case, the main surface parallel of fixed part 32fx It is unfolded in the upper surface of column 30.The main surface parallel of annulus 32lp in fixed part 32fx interarea and be unfolded, annulus 32lp is connect via foot 32lg with fixed part 32fx.Therefore, be parallel in circumferentia the upper surface of column 30 state (with Circumferentia along the upper surface of column 30 state) under, annulus 32lp, which is arranged on, separates specified interval with column 30 Position.
RFIC element 14 forms structure shown in fig. 5, is less than annulus 32lp, is installed on annulus 32lp, horizontal One end 32lp01 and other end 32lp02 across annulus 32lp.The terminal electrode 14a and 14b of RFIC element 14 are set Via the grafting material (not shown) of the electric conductivity such as solder, respectively with one end 32lp01 and the other end of annulus 32lp 32lp02 connection or engagement.
Referring to Fig.1 0, column 30 by solid or hollow metallic object 30m, and covering metallic object 30m surface it is exhausted Velum 30i is formed.Fixed part 32fx is engaged via the grafting material 34 of insulating properties with the upper surface of column 30.
Electrical length between two input and output terminals 14h and 14i of RFIC chip 14e setting is adjusted to λ/2. In addition, the height (distance from upper surface to lower surface) of metallic object 30m is adjusted to λ/2 or more.Annulus 32lp is via foot Portion 32lg and fixed part 32f are connect with the upper surface of column 30, therefore are from the specified position of connecting portion 32fx The electrical length of distal end to the input and output terminal 14h of the metallic object 30m of basic point also reach λ/2 or more.
When sending high-frequency signal from RFIC element 14, the electric current I ' based on the electric current I for flowing through annulus 32lp flows through Column 30.At this moment, the position near both ends 32lp01,32lp02 of annulus 32lp becomes maximum current point, annulus Position (position farthest from RFIC element 14) near the center of 32lp becomes maximum voltage point.Annulus 32lp makees as a result, It plays a role for first emitting element (vibration excitor or exciting annulus).
In addition, via the other end 32fx01 and column 30 of the fixed part 32fx of foot 32lg connection annulus 32lp The specified position of upper surface connects, therefore electric current I ' easily flows through the side of metallic object 30m, and column 30 is as the second transmitting member Part plays a role.
Further, one end 32lg01 of foot 32lg is connect with the maximum current of annulus 32lp point, therefore flows through column The electric current I ' of shape body 30 is also maximized.Improve high-frequency transmission performance (greatly improving the gain as Wireless IC device) as a result,.
In addition, the circumferentia of annulus 32lp is roughly parallel to the upper surface of column 30, therefore annulus 32lp will not It is significantly protruded from the upper surface of column 30.The fastness of Wireless IC device 10a can be improved as a result,.
Then, referring to Fig.1 1 (A)~Figure 11 (D) to the manufacturing method of antenna conductor 32 and the installation side of RFIC element 14 Method is illustrated.
Firstly, providing the Sheet Conductor of ring part 32lp, foot 32lg and fixed part 32fx from cuff-like material die (1 (A) referring to Fig.1).Then, in the coupling part of annulus 32lp and foot 32lg, by foot 32lg and fixed part 32fx Bend downward 90 ° (1 (B) referring to Fig.1).Then, in the coupling part of foot 32lg and fixed part 32fx, by fixed part 32fx to Upper 90-degree bent (1 (C) referring to Fig.1).This completes antenna conductors 32, install RFIC element 14 later, make it across ring-type One end 32lp01 and other end 32lp02 (1 (D) referring to Fig.1) of portion 32lp.
Annulus 32lp, foot 32lg and the fixed part 32fx for forming antenna conductor 32 as a result, utilize cuff-like material Punching Technology and bending machining are integrally formed.Antenna conductor 32 can be easily made as a result,.
2 (A), Figure 12 (B), Figure 13 and Figure 14 referring to Fig.1, the clip-like RFID label tag 100 of embodiment 3 is representative be by RFID label tag of the 900MHz band as communication frequency, leads comprising alligator clip 120, lead 140, RFIC element 180 and ring-type Body 220.
The conductive intermediate plate 121 and 122 of alligator clip 120.Medial surface in the front end of intermediate plate 121 forms mountain valley shape Retainer 121t, the front end of intermediate plate 122 medial surface formed mountain valley shape retainer 122t.In addition, the length of intermediate plate 122 Length than intermediate plate 121 is long, and the maintaining part 124 for keeping lead 140 is formed in the cardinal extremity of intermediate plate 122 (described in text specific as follows).
Intermediate plate 121 and 122 is supported by the axis (supporting member) of electric conductivity, is engaged retainer 121t and 122t phase, And freely swing on the direction of rotation of axis 123.In addition, spiral winding spring (not shown), intermediate plate are arranged around axis 123 121 retainer 121t is pressed against the retainer 122t of intermediate plate 122 using the recuperability of spiral winding spring.
In alligator clip 120 with this structure, it regard axis 123 as fulcrum, the front end conduct of intermediate plate 121 and 122 Position, the cardinal extremity of intermediate plate 121 and 122 is as force.It is the recuperability greater than spiral winding spring, opposite direction by making External force is applied to force, and the retainer 121t of intermediate plate 121 is made to leave the retainer 122t of intermediate plate 122.
Ring-shaped conductor 220 is the coil antenna conductor with the first looped end 2201 and the second looped end 2202, exhausted The substrate 200 of edge is supported.The interarea of substrate 200 is in rectangle, when vertical view, the size of the rectangle and is external in ring-shaped conductor 220 rectangle is consistent.
Lead 140 is formed by connection conductor 142 (core wire) and resin 141, the covering connection of resin 141 conductor (core wire) 142 remove the other parts outside its first end 14201 and the second end 14202.In some position of lead 140 (than tree The center of the length direction of rouge 141 is close to the position of first end 14201) at, the maintaining part with the cardinal extremity that intermediate plate 122 is arranged in 124 engagings.As a result, lead 140 is kept by alligator clip 120.
Using conductive bonding material 161, (material is solder etc. to the first end 14201 of connection conductor 142, hereinafter phase It is connect with intermediate plate 122 together).In addition, the second end 14202 of connection conductor 142 is led using conductive bonding material 162 with ring-type Body 220 connects.More specifically, the first end 14201 for connecting conductor 142 will be close to the position i.e. crocodile mouth of maintaining part 124 The fulcrum of folder 120 is connect on the position opposite with the position of alligator clip 120 with intermediate plate 122 as benchmark.In addition, even The second end 14202 for connecing conductor 142 is connected near the first looped end 22001 of ring-shaped conductor 220.
In addition, about this " near ", if will be from first the 22001 to the second looped end of looped end 22002 of ring-shaped conductor 220 Length (electrical length) be set as A, then connect conductor 142 preferably since the first looped end 22001 length be A/4 range It is interior to be connect with ring-shaped conductor 220, it is further preferred that since the first looped end 22001 length be A/8 in the range of with ring Shape conductor 220 connects.
By making the first end 14201 for connecting conductor 142 be connected to above-mentioned position, connection conductor 142 can be reduced and hindered A possibility that handling of intermediate plate 120, and extend the electricity from the front end of intermediate plate 122 to the second end 14202 of connection conductor 142 Length (described in text specific as follows).
RFIC element 180 is installed in ring-shaped conductor 220, across the first looped end 22001 and the second looped end 22002.Specifically, RFIC element 180 has first terminal electrode 180a and second terminal electrode 180b, first terminal electricity Pole 180a is connect using conductive bonding material 240a with the first looped end 22001, on the other hand, second terminal electrode 180b benefit It is connect with conductive bonding material 240b with the second looped end 22002.
As shown in Figure 15, RFIC element 180 is configured to the RFIC chip 180e comprising processing RFID signal and installation should The power supply circuit substrate 180c of chip.Power supply circuit substrate 180c forms plate using ceramics or resin as material.RFIC chip Reservoir circuit and signal processing circuit built in 180e, and sealed by the sealant 180d of resin.
Input and output terminal 180f and 180g are formed in the upper surface of power supply circuit substrate 180c.In addition, in RFIC core It is (the 180h: the first input and output terminal, 180i: the second defeated that the lower surface of piece 180e forms input and output terminal 180h and 180i Enter output terminal).Input and output terminal 180f and 180g are divided using conductive bonding material (not shown) (material is Ag etc.) It is not connect with input and output terminal 180h and 180i.Input and output terminal 180f and 180g is via setting in power supply circuit base The power supply circuit 180j (referring to Fig.1 6) of plate 180c connects with first terminal electrode 180a and second terminal electrode 180b respectively It connects.
The equivalent circuit of Figure 16 expression RFIC element 180.In power supply circuit 180j, one end of capacitor C11 and first end Sub-electrode 180a connection, the other end of capacitor C11 are connect with one end of inductor L11.The other end of inductor L11 and input Output terminal 180f connection, and then connect with input and output terminal 180h.One end of capacitor C12 and second terminal electrode 180b Connection, the other end of capacitor C12 is connect with input and output terminal 180g, and then is connect with input and output terminal 180i.In addition, One end of inductor L12 is connect with the other end of capacitor C11, and the other end of inductor L12 and the other end of capacitor C12 connect It connects.Using the inductor L11~L12 and capacitor C11~C12 being arranged in this way, can be matched in broadband.
Electrical length between the input and output terminal 180h and 180i of RFIC chip 180e setting is adjusted to λ/2 1/2 wavelength of (=signal of communication).In contrast, the electrical length of 122 front end is adjusted from input and output terminal 180h to intermediate plate The whole value for less than λ/2 (preferably, as close possible to the value of λ/2 in the range of not generating resonance).
The clip-like RFID label tag 100 constituted in this way is installed in tricks of the trade shown in Figure 17 (A) and Figure 17 (B) with metal Or carbon is on the electric conductivity pallet (article) 300 of material.From the distalmost end of the pallet 300 on the basis of installation site (from installation Position is farthest and is the end of open state) value of λ/2 or more is showed to the electrical length of input and output terminal 180h.In addition, In the case where the specified position that clip-like RFID label tag 100 is mounted on to pallet 300, from the pallet 300 on the basis of specified position The electrical length of distalmost end to input and output terminal 180h show the integral multiples of λ/2.
Electric current I ' stream when sending high-frequency signal from RFIC element 180, based on the electric current I for flowing through ring-shaped conductor 220 Cross alligator clip 120 and pallet 300.At this moment, the position near the both ends 22001,22002 of ring-shaped conductor 220 becomes maximum Current point (point of highest current density), the position (position farthest from RFIC element 180) near the center of ring-shaped conductor 220 As maximum voltage point.Ring-shaped conductor 220 plays a role as vibration excitor or exciting annulus as a result, alligator clip 120 and Pallet 300 plays a role as emitter or radiated element.
In addition, the second end 14202 of connection conductor 142 is connect with the maximum current of ring-shaped conductor 220 point, therefore flow through The electric current I ' of alligator clip 120 and pallet 300 is also maximized.The gain of signal of communication greatly improves as a result,.In other words, High-frequency transmission performance and communication characteristic improve.
Further, since the electrical length of 122 front end from input and output terminal 180h to intermediate plate is adjusted to be less than λ/2 Value, if therefore clip-like RFID label tag 100 is dismantled from pallet 300, the gain of signal of communication is greatly reduced.Pass through as a result, Clip-like RFID label tag 100 is dismantled from pallet 300, can substantially open or close communication operation.
In addition, in embodiment 3, it is assumed that clip-like RFID label tag 100 to be mounted on the pallet 300 of electric conductivity.However, preparing Hole clip notebook 400 shown in Figure 18 is used as article, can also be mounted on clip-like RFID label tag 100 and be set to hole clip notebook 400 spiral helicine metal fittings (conductor part) 400m.In this case, the helix length for forming metal fittings 400m is adjusted For length corresponding with the electrical length of λ/2 or more.If clip-like RFID label tag 100 is mounted on metal fittings 400m as a result, Metal fittings 400m plays a role as emitter or radiated element.
In addition, in Figure 18, it is assumed that metal fittings 400m is formed as helical form, but multiple gold of each self-forming ring can also be used Belong to accessory and replaces spiral helicine metal fittings 400m.Only, in this case, need the size of adjustment ring make from the distalmost end of ring to The electrical length of input and output terminal 180h reaches λ/2 or more.
In addition, being used as clip using alligator clip 120, but the binder clip or circular hole of electric conductivity can also be used in embodiment 3 Folder is to replace (9 and Figure 20 referring to Fig.1).
Further, in embodiment 3, the retainer 121t and 122t of alligator clip 120 and the conductor part of article are straight It connects in succession.Prevent as conducting rubber or insulating properties rubber however, can also be installed respectively on retainer 121t and 122t Sliding component.By installing anti-slip component, the possibility that alligator clip 120 falls off from article easily can be reduced.In addition, using insulation In the case that property rubber is as anti-slip component, capacitor is formed between retainer 121t or 122t and article.
In addition, power supply circuit 180j shown in Figure 16 is provided in embodiment 3 on power supply circuit substrate 180c, but can also Omit power supply circuit 180j.Further, in embodiment 3, RFIC element 180 seals RFIC chip using with sealant 180d 180e, to improve the structure of fastness.However, can also be constituted using RFIC bare die as RFIC element 180.
1 Wireless IC device
2 ring-shaped conductors
3 RFIC elements
4 connection conductors
5 metallic objects
10 Wireless IC devices
12 antenna conductors (ring-shaped conductor)
14 RFIC elements
14a terminal electrode
14b terminal electrode
14e RFIC chip
14h input and output terminal
14i input and output terminal
14fct power supply circuit
16 connection conductors
20 columns (object)
20i insulating film (insulator)
20m metallic object
22 grafting materials (insulator)
10a Wireless IC device
30 columns (object)
30m metallic object
32 antenna conductors
32lp annulus (ring-shaped conductor)
32lg foot (a part of connection conductor)
32fx fixed part (another part of connection conductor)
34 grafting materials (insulator)
100 clip-like RFID label tags
120 alligator clips (clip)
121,122 intermediate plate
123 axis (supporting member)
142 connection conductors
180 RFIC elements
180a first terminal electrode
180b second terminal electrode
180e RFIC chip
The first input and output terminal of 180h
The second input and output terminal of 180i
220 ring-shaped conductors
300 pallets (article)
400 hole clip notebooks (article)
1. a kind of Wireless IC device, comprising:
Ring-shaped conductor, the ring-shaped conductor have the first looped end and the second looped end；
The object of mounting object as the ring-shaped conductor, the object have metallic object；
RFIC element, the RFIC element have the first terminal electrode that is connect with first looped end and with second ring The second terminal electrode of shape end connection；And
Connect conductor, which has the first end that connect with the ring-shaped conductor and connect with the object The second end,
The Wireless IC device is characterized in that,
The ring-shaped conductor is arranged to its circumferentia along the surface of the object,
The RFIC element includes RFIC chip, which has the first input connecting with the first terminal electrode defeated Terminal and the second input and output terminal being connect with the second terminal electrode out,
From using the second end as the distalmost end of the metallic object of basic point to the electrical length of first input and output terminal More than 1/2 wavelength of signal of communication.
2. Wireless IC device as described in claim 1, which is characterized in that
Electrical length between first input and output terminal and second input and output terminal is the signal of communication 1/2 wavelength.
3. Wireless IC device as claimed in claim 2, which is characterized in that
The metallic object has the first edge end as the distalmost end farthest from the second end and is different from The second edge end of the first edge end,
The second end is connect in the second edge end with the object.
4. Wireless IC device as claimed in claim 2, which is characterized in that
The RFIC element also includes the power supply circuit between the ring-shaped conductor and the RFIC chip,
The first terminal electrode is connect via the power supply circuit with first input and output terminal, the Second terminal electricity Pole is connect via the power supply circuit with second input and output terminal.
5. Wireless IC device as claimed in claim 3, which is characterized in that
6. the Wireless IC device as described in any one of claims 1 to 5, which is characterized in that
It is also equipped with the insulator in the formation of the surface of the object, the second end is via the insulator and the object Object connection.
CN201910164054.4A 2014-04-28 2015-04-21 Wireless IC device CN109888499A (en)
JP2014092643 2014-04-28
JP2014-092643 2014-04-28
JP2014126813 2014-06-20
JP2014-126813 2014-06-20
JP2014222167 2014-10-31
JP2014-222167 2014-10-31
CN201580017036.3A CN106134000B (en) 2014-04-28 2015-04-21 The article of Wireless IC device, clip-like RFID label tag and subsidiary RFID label tag
CN201580017036.3A Division CN106134000B (en) 2014-04-28 2015-04-21 The article of Wireless IC device, clip-like RFID label tag and subsidiary RFID label tag
CN109888499A true CN109888499A (en) 2019-06-14
ID=54358563
CN201910164054.4A CN109888499A (en) 2014-04-28 2015-04-21 Wireless IC device
US (2) US9940564B2 (en)
JP (3) JP6079932B2 (en)
CN (2) CN109888499A (en)
GB (1) GB2539839A (en)
WO (1) WO2015166832A1 (en)
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CN106134000B (en) 2019-04-02
JP2017004540A (en) 2017-01-05
WO2015166832A1 (en) 2015-11-05
JP6566020B2 (en) 2019-08-28
JP6556672B2 (en) 2019-08-07
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US20180181848A1 (en) 2018-06-28
US20170017868A1 (en) 2017-01-19
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US10169689B2 (en) 2019-01-01
US9940564B2 (en) 2018-04-10
GB2539839A (en) 2016-12-28
CN106134000A (en) 2016-11-16
CN103729676A (en) 2014-04-16 Wireless ic device
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