CN101281613A - Electronic label - Google Patents
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- CN101281613A CN101281613A CNA2008100381281A CN200810038128A CN101281613A CN 101281613 A CN101281613 A CN 101281613A CN A2008100381281 A CNA2008100381281 A CN A2008100381281A CN 200810038128 A CN200810038128 A CN 200810038128A CN 101281613 A CN101281613 A CN 101281613A
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- electronic tag
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Abstract
The invention discloses an electrical label including a chip, an on-chip antenna and an offchip antenna, wherein the on-chip antenna is made by adoptign the interconnection line spiral winding of the integrate circuit, and the on-chip antenna and the offchip antenna are in the transformer coupling way. The on-chip antenna adopts the monolayer multiturn spiral winding way of the metal interconnection coil with the radius smaller and the multilayer metal interconnection line upper and lower series way. The on-chip antenna is made by combining the multiturn spiral winding way of the peer metal interconnection line coil with the radius smaller and the adjacent metal interconnection line upper and lower series way. The invention adopts the on-chip sensibility antenna and the offchip condenser antenna transformer coupling way, reduces the required positioning accuracy when connecting the antenna and the chip, meanwhile greatly reduces the encapsulating cost of the label and enhances the performance of the chip.
Description
Technical field
The present invention relates to the electronic tag in the REID, this electronic tag comprises chip, on-chip antenna and sheet outside antenna.
Background technology
In recent years, automatic identifying method is in many service fields, aspect sale of goods and the logistics distribution, in commercial department, obtained popularizing fast and promoting in manufacturing enterprise and the material field of circulation.
Bar code claims paper tape again, and several years ago, bar code has caused a revolution and obtained widespread use in the recognition system field.Today, this bar code can not satisfy people's demand under increasing situation.Though bar code is very cheap, its weak point is that storage capacity is little and can not rewrite.
A kind of technical best solution be with data storage in a silicon.In daily life, having contact row's IC-card, as phone IC-card, bank card etc., is the most general structure of electric data carrier.Yet concerning IC-card, in many cases, the connection of mechanical contact is insecure.Data between the reader under data carrier and one are carried out non-contact transmission with much flexible.According to the energy and the data transmission method that use, we are called radio-frequency recognition system (Radio Frequency Identification is called for short RFID) to non-contacting recognition system.Therefore, RFID is that a kind of radiowave that utilizes is read and write programmed recording medium, radio-frequency technique is combined with the IC-card technology and can be used for the technology of remote, moving-target, wireless identification.
The antenna of label is in the same place with Chip Packaging, and antenna provides energy for label chip, finishes the information transmission between label and the reader simultaneously.Need impedance matching between label chip and its antenna, that is to say ideally, require the impedance real part of both equivalent series to equate the imaginary part complex conjugate.
The encapsulation of chip and antenna, be divided into several modes at present: mode one, chip directly is connected electrically to two pads of chip two feeding points of antenna by forms such as chip on board encapsulation (Chip On Board is called for short COB), back-off or ultrasonic soldering.Fig. 1 is an electronic tag COB encapsulation synoptic diagram.At first antenna is printed or etched on the base material 12, the reverse side of the pad 11 of chip 10 is placed on the base material 12 of antenna, the antenna feed point 14 that connects on bonding pads 11 and the base material 12 by tinsel 13.Fig. 2 is an electronic tag back-off encapsulation synoptic diagram.Put facing to base material 24 on the plane, pad place of chip 20.Anisotropic conducting resinl 22 connects the feeding point 23 of bonding pads 21 and antenna.
The packaged type two of chip and antenna connects respectively on 33 to big bands of two pads of chip 30 earlier, and this band is connected with antenna as a big pad again; Fig. 3 is the synoptic diagram that electronic tag is packaged into strips earlier.Chip 30 is encapsulated in above the band 31 by above-mentioned mode one, and band 31 is encapsulated on the feeding point 32 of antenna radiator once more as a big pad.
The packaged type three of chip and antenna is connected to an inductive loop with antenna pass-through mode one, and this inductive loop partly is connected with the radiator of antenna by transformer coupled (being inductive coupling) or capacity coupled form with antenna again.The mode of mentioning as U.S. Pat 7158033.Fig. 4 is the electronic tag of reactance coupling packaged type.Chip 40 adopts above-mentioned mode one and is connected attached to the inductive loop on the base material 42 41, then finishes energy and information transmission between antenna main radiator 43 and the inductive loop 41 by transformer coupled or capacity coupled form.
The equivalent reactance of the label chip of above-mentioned several packaged types is capacitives, and this just requires antenna that inductive reactance will be provided, to realize impedance matching.It between above-mentioned antenna and the chip direct physical connection, this just needs chip is pad design static discharge (Electro Static Discharge is called for short ESD) circuit, and this circuit itself can reduce the performance of chip, increase the power consumption of chip, also reduced the yield rate of encapsulation simultaneously.Because the area of bonding pads is very little, the very high bearing accuracy of needs when connecting between antenna and the chip, the design difficulty of the instrument of feasible encapsulation strengthens, and cost increases.
Summary of the invention
For overcoming the deficiency of above-mentioned prior art, the technical problem to be solved in the present invention provides a kind of electronic tag cheaply, the on-chip antenna coupling piece outside antenna of this electronic tag.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of electronic tag comprises chip, on-chip antenna and sheet outside antenna.Described on-chip antenna adopts the interconnection line spiral of integrated circuit to be entwined, and this on-chip antenna and described outside antenna are transformer coupled forms.
The individual layer multi-circle spiral flow canoe that described on-chip antenna adopts the metal interconnecting wires coil radius to reduce gradually.
The mode that described on-chip antenna adopts the multiple layer metal interconnection line to connect up and down.
Described on-chip antenna adopts the mode be combined into of connecting up and down with layer multi-circle spiral flow canoe that the metal interconnecting wires coil radius reduces gradually and adjacent two layers metal interconnecting wires coil.
Described on-chip antenna induction reactance equals the absolute value of the capacitive reactance of described chip.
The part of described outside antenna and the coupling of described on-chip antenna adopts the monocycle form of band opening.
The overall diameter of the unicoil ring plate of described outside antenna equals the overall diameter of described on-chip antenna coil.
The plane at the chip circuit of this electronic tag and on-chip antenna place is facing to described outside antenna, both overlapping placements up and down, the central lines of this sheet outside antenna and on-chip antenna.
The wire coil outside surface of on-chip antenna has the dielectric protection layer of integrated circuit metal layer, and described on-chip antenna does not directly contact with the sheet outside antenna.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts inductive antenna and the outer transformer-coupled mode of condenser antenna of sheet on the sheet, has reduced the bearing accuracy of needs when connecting between antenna and the chip.The encapsulation of electronic label chip and sheet outside antenna no longer needs the adhesive form of conducting resinl, thereby has accelerated encapsulation process, has also reduced the cost of encapsulation simultaneously.
The sheet outside antenna of electronic tag of the present invention partly is the individual pen form, and on-chip antenna is the multi-turn form, and the two transmits energy and information by transformer-coupled form.From the angle of transformer, the voltage that the further macrophotograph outside antenna of on-chip antenna meeting is inducted.The induced potential of two feed port of the on-chip antenna of electronic label chip increases, can reduce the time in the voltage multiplying rectifier diode dead band of electronic label chip, also can reduce the progression of voltage multiplying rectifier, and then the conversion efficiency of the alternating current-direct current of the sheet outside antenna of increase electronic tag and on-chip antenna coupling unit.
The reactance of conventional electronic label antenna is an induction reactance, and the reactance of the sheet outside antenna of electronic tag of the present invention is capacitive reactance.The sheet outside antenna of capacitive reactance is subjected to the influence of environment low relatively, has increased the robustness of electronic tag like this.
The design of electronic tag of the present invention can be omitted the ESD element of circuit, does not also just have the power consumption loss of ESD element, has saved the chip area that the ESD original paper occupies, thereby has realized low-power consumption more, electronic label chip cheaply.Owing to do not need the ESD original paper, and then improved yield rate yet.
Description of drawings
Fig. 1 is a prior art electronic tag COB encapsulation synoptic diagram.
Fig. 2 is a prior art electronic tag back-off encapsulation synoptic diagram.
Fig. 3 is the synoptic diagram that the prior art electronic tag is packaged into strips earlier.
Fig. 4 is the electronic tag synoptic diagram of prior art reactance coupling packaged type.
Fig. 5 is the on-chip spiral antenna synoptic diagram that the radius of electronic tag of the present invention reduces gradually.
Fig. 6 is the on-chip antenna synoptic diagram that the multiple layer metal interconnection line of electronic tag of the present invention is formed.
Fig. 7 a is the on-chip antenna of electronic tag of the present invention and the relative position synoptic diagram of sheet outside antenna.
Fig. 7 b is the enlarged diagram of sheet outside antenna of the present invention and on-chip antenna coupling unit.
Number in the figure:
The 10th, chip; The 11st, bonding pads; The 12nd, the base material of antenna; The 13rd, tinsel; The 14th, the feeding point of antenna;
The 20th, chip; The 21st, bonding pads; The 22nd, conducting resinl; The 23rd, the feeding point of antenna; The 24th, base material;
The 30th, chip; The 31st, band; The 32nd, the feeding point of antenna radiator;
The 40th, chip; The 41st, inductive loop; The 42nd, base material; The 43rd, the main radiator of antenna;
The 51st, on-chip antenna; The 52nd, metal interconnecting wires; The 53rd, through hole; The 54th, feed port;
The 60th, the upper strata aerial coil; The 61st, lower floor's aerial coil; The 62nd, through hole; The 63rd, feed port;
The 71st, the sheet outside antenna; The 73rd, have the monocycle sheet outside antenna of opening and the part of on-chip antenna coupling;
The 72nd, on-chip antenna; The 74th, the chip circuit in on-chip antenna inside; The 75th, the substrate of chip.
Embodiment
Specific embodiments of the present invention are further described in detail below in conjunction with drawings and Examples, but should not limit protection scope of the present invention with this.
The present invention is by the integrated circuit interconnection line design on-chip antenna of employing standard, and on-chip antenna and sheet outside antenna transmit energy and information by transformer-coupled form.
The electronic tag of on-chip antenna coupling piece outside antenna of the present invention comprises chip, on-chip antenna and sheet outside antenna.Described on-chip antenna adopts the interconnection line spiral of integrated circuit to be entwined, and this on-chip antenna and described outside antenna are transformer coupled forms.The induction reactance of on-chip antenna equals the absolute value of the capacitive reactance of chip substantially, means that both are conjugate form basically.And the sheet outside antenna is the radiator part, is responsible for receiving and launching electromagnetic wave.
The individual layer multi-circle spiral flow canoe that described on-chip antenna can adopt the metal interconnecting wires coil radius to reduce gradually.See also the on-chip spiral antenna that the radius of Fig. 5 electronic tag of the present invention reduces gradually.Certain one deck metal wire of integrated circuit interconnection line is the formation spiral fashion on-chip antenna 51 that reduces gradually of radius from outside to inside.By the metal interconnecting wires 52 of on-chip antenna lower floor and the through hole 53 between the interconnection line, two feed port 54 that this on-chip antenna 51 is connected with electronic label chip are placed on the inside of this on-chip antenna.
See also the on-chip antenna of the multiple layer metal interconnection line composition of Fig. 6 electronic tag of the present invention.The mode that on-chip antenna also can adopt the multiple layer metal interconnection line to connect up and down.The structure of every layer of metal interconnecting wires is individual pen structure or similar multi-turn structure shown in Figure 5.As shown in Figure 6, this on-chip antenna comprises upper and lower two-layer coil, and every layer line circle comprises the metal interconnecting wires of two circle integrated circuit.The upper strata aerial coils 60 of two circles, the through hole 62 by insulation course is connected with lower floor's aerial coils 61 of two circles, the voltage doubling rectifing circuit port two ends, inside of two feed port, the 63 connection chips of this antenna.
On-chip antenna can also adopt the mode be combined into of connecting up and down with layer multi-circle spiral flow canoe that the metal interconnecting wires coil radius reduces gradually and adjacent two layers metal interconnecting wires coil.This on-chip antenna induction reactance equals the absolute value of the capacitive reactance of electronic label chip substantially, and this on-chip antenna needs the induction reactance of impedance of antenna and the capacitive reactance complex conjugate of chip, thereby has realized impedance matching, and antenna could be given chip with NE BY ENERGY TRANSFER.
The part with described on-chip antenna coupling of described outside antenna adopts the monocycle sheet form of band opening.The overall diameter of the unicoil ring plate of sheet outside antenna equates with the overall diameter of described on-chip antenna coil substantially.
The reactance of conventional electronic label antenna is an induction reactance, and the reactance of sheet outside antenna of the present invention is capacitive reactance.The sheet outside antenna of capacitive reactance is subjected to the influence of environment low relatively, has increased the robustness of electronic tag like this.
See also the on-chip antenna of Fig. 7 a electronic tag of the present invention and the relative position synoptic diagram of sheet outside antenna, the enlarged diagram of Fig. 7 b sheet outside antenna of the present invention and on-chip antenna coupling unit.The part 73 of sheet outside antenna 71 and on-chip antenna 72 couplings adopts the monocycle form of band opening.The chip of electronic tag is flat rectangular parallelepiped, chip circuit 74 and this on-chip antenna 71 in on-chip antenna 72 inside are positioned on the big plane of described rectangular parallelepiped, and the another one plane corresponding with this chip circuit 74 and plane, on-chip antenna 71 place is commonly referred to as the substrate 75 of chip.If the substrate of chip 75 is facing to sheet outside antenna 71, the overall performance of electronic tag can descend.So the substrate 75 of this chip is away from this sheet outside antenna 71, this chip circuit 74 and plane, on-chip antenna 71 place be facing to described outside antenna 71, both overlapping placements up and down.The center line of sheet outside antenna 71 and on-chip antenna 72 overlaps as far as possible, makes both coupling coefficient reach maximum as far as possible.So just realized the transformer coupled of on-chip antenna and sheet outside antenna.
Distance between sheet outside antenna 71 and the on-chip antenna 72 is more little, the overall diameter of the overall diameter of the unicoil ring plate of sheet outside antenna and on-chip antenna coil is approaching more, and both coupling coefficient are just big more.Therefore the size of on-chip antenna and sheet outside antenna coincidence and minimum distance suitable, that both center lines are tried one's best put, and can keep both coupling coefficient enough big.
The wire coil outside surface of this on-chip antenna has the dielectric protection layer of integrated circuit metal layer, and described on-chip antenna does not directly contact with the sheet outside antenna.
The sheet outside antenna of electronic tag of the present invention partly is the individual pen form, and on-chip antenna is the multi-turn form, and the two transmits energy and information by transformer-coupled form.From the angle of transformer, the voltage that the further macrophotograph outside antenna of on-chip antenna meeting is inducted.
The electronic tag of on-chip antenna coupling piece outside antenna of the present invention is by the integrated circuit interconnection line design on-chip antenna of employing standard, and the outer antenna of on-chip antenna and sheet transmits energy and information by transformer-coupled form.Such design greatly reduces the packaging cost of label, has strengthened the performance of chip.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (9)
1, a kind of electronic tag comprises chip, on-chip antenna and sheet outside antenna, it is characterized in that:
Described on-chip antenna adopts the interconnection line spiral of integrated circuit to be entwined, and this on-chip antenna and described outside antenna are transformer coupled forms.
2, electronic tag according to claim 1 is characterized in that the individual layer multi-circle spiral flow canoe that described on-chip antenna adopts the metal interconnecting wires coil radius to reduce gradually.
3, electronic tag according to claim 1 is characterized in that the mode that described on-chip antenna adopts the multiple layer metal interconnection line to connect up and down.
4, electronic tag according to claim 1 is characterized in that described on-chip antenna adopts the mode be combined into of connecting up and down with layer multi-circle spiral flow canoe that the metal interconnecting wires coil radius reduces gradually and adjacent two layers metal interconnecting wires coil.
5,, it is characterized in that described on-chip antenna induction reactance equals the absolute value of the capacitive reactance of described chip according to the described electronic tag of arbitrary claim in the claim 1 to 4.
6, electronic tag according to claim 1 is characterized in that the part of described outside antenna and described on-chip antenna coupling adopts the monocycle form of being with opening.
7, electronic tag according to claim 1 is characterized in that the overall diameter of the unicoil ring plate of described outside antenna equals the overall diameter of described on-chip antenna coil.
8, according to claim 1 or 6 or 7 described electronic tags, the plane that it is characterized in that the chip circuit of this electronic tag and on-chip antenna place is facing to described outside antenna, both overlapping placements up and down, the central lines of this sheet outside antenna and on-chip antenna.
9, electronic tag according to claim 8 is characterized in that the wire coil outside surface of this on-chip antenna has the dielectric protection layer of integrated circuit metal layer, and described on-chip antenna does not directly contact with the sheet outside antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100381281A CN101281613B (en) | 2008-05-28 | 2008-05-28 | Electronic label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100381281A CN101281613B (en) | 2008-05-28 | 2008-05-28 | Electronic label |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101281613A true CN101281613A (en) | 2008-10-08 |
| CN101281613B CN101281613B (en) | 2010-06-16 |
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ID=40014068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100381281A Expired - Fee Related CN101281613B (en) | 2008-05-28 | 2008-05-28 | Electronic label |
Country Status (1)
| Country | Link |
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| CN (1) | CN101281613B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789543A (en) * | 2010-03-19 | 2010-07-28 | 上海集成电路研发中心有限公司 | Multi-system and multi-band frequency RFID (Radio Frequency Identification) antenna |
| WO2011113278A1 (en) * | 2010-03-19 | 2011-09-22 | 上海集成电路研发中心有限公司 | Multi-system and multi-band radio frequency identification (rfid) antenna |
| CN106471673A (en) * | 2014-07-02 | 2017-03-01 | 株式会社村田制作所 | Antenna assembly, Anneta module and communication terminal |
| CN108108774A (en) * | 2017-11-03 | 2018-06-01 | 上海蜂之舞电子有限公司 | A kind of metal electronic label recognition method based on ultra-high frequency RFID technology |
| CN109335876A (en) * | 2018-10-16 | 2019-02-15 | 江南大学 | A kind of flyer bobbin containing electronic tag |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002048980A1 (en) * | 2000-12-15 | 2002-06-20 | Electrox Corp. | Process for the manufacture of novel, inexpensive radio frequency identification devices |
| US7106266B1 (en) * | 2004-05-14 | 2006-09-12 | Pauley James D | Tuned antenna ID reader |
-
2008
- 2008-05-28 CN CN2008100381281A patent/CN101281613B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789543A (en) * | 2010-03-19 | 2010-07-28 | 上海集成电路研发中心有限公司 | Multi-system and multi-band frequency RFID (Radio Frequency Identification) antenna |
| WO2011113278A1 (en) * | 2010-03-19 | 2011-09-22 | 上海集成电路研发中心有限公司 | Multi-system and multi-band radio frequency identification (rfid) antenna |
| CN101789543B (en) * | 2010-03-19 | 2014-11-05 | 上海集成电路研发中心有限公司 | Multi-system and multi-band frequency RFID (Radio Frequency Identification) antenna |
| CN106471673A (en) * | 2014-07-02 | 2017-03-01 | 株式会社村田制作所 | Antenna assembly, Anneta module and communication terminal |
| CN106471673B (en) * | 2014-07-02 | 2019-04-23 | 株式会社村田制作所 | Antenna assembly, Anneta module and communication terminal |
| CN108108774A (en) * | 2017-11-03 | 2018-06-01 | 上海蜂之舞电子有限公司 | A kind of metal electronic label recognition method based on ultra-high frequency RFID technology |
| CN109335876A (en) * | 2018-10-16 | 2019-02-15 | 江南大学 | A kind of flyer bobbin containing electronic tag |
| CN109335876B (en) * | 2018-10-16 | 2020-06-09 | 江南大学 | Roving bobbin containing electronic tag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101281613B (en) | 2010-06-16 |
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Granted publication date: 20100616 Termination date: 20180528 |
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