CN101799882A - High-frequency small-size radio frequency identification and manufacturing method of etching antenna thereof - Google Patents

High-frequency small-size radio frequency identification and manufacturing method of etching antenna thereof Download PDF

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Publication number
CN101799882A
CN101799882A CN200910045792A CN200910045792A CN101799882A CN 101799882 A CN101799882 A CN 101799882A CN 200910045792 A CN200910045792 A CN 200910045792A CN 200910045792 A CN200910045792 A CN 200910045792A CN 101799882 A CN101799882 A CN 101799882A
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China
Prior art keywords
substrate
step
antenna
radio frequency
high
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CN200910045792A
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Chinese (zh)
Inventor
冀京秋
陈克勤
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上海中京电子标签集成技术有限公司
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Priority to CN200910045792A priority Critical patent/CN101799882A/en
Publication of CN101799882A publication Critical patent/CN101799882A/en

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Abstract

The invention relates to high-frequency small-size radio frequency identification and a manufacturing method for an etching antenna thereof. The high-frequency small-size radio frequency identification comprises a substrate, an antenna arranged on the substrate, wherein the antenna comprises multiturn antenna coils which are arranged on the front side and the back side of the substrate respectively; and a plurality of rivet points are arranged on the substrate, and are used for connecting the antenna coils on the right side and the reverse side of the substrate. Because the antenna coils are arranged on the right side and the reverse side of the substrate, the high-frequency small-size radio frequency identification and the manufacturing method of the etching antenna thereof can complete multiturn antenna coil distribution by utilizing narrow space on the edge of the substrate. Therefore, even if the size of the radio frequency identification is reduced, the size of the inner diameter of the antenna coils cannot be reduced, and the working performance of the small-size radio frequency identification is greatly improved.

Description

The method for making of a kind of high-frequency small-size radio frequency identification and etching antenna thereof

Technical field

The present invention relates to a kind of electronic tag and antenna method for making thereof, particularly relate to the method for making of a kind of high-frequency small-size radio frequency identification and etching antenna thereof.

Background technology

In the prior art, the electronic label antenna manufacturing technology mainly contains three kinds of etching method, coil winding method and printed antennas.The polyester PET thin film that etching method adopts thickness to be about 40 microns more is a substrate, and the two sides composite thickness is about 30 microns aluminium thin layer or copper lamina, forms through graphic printing and pickling etching.Wherein, an aluminium thin layer forms the aluminum antenna of desired size after pickling, the line of antenna footpath, the number of turns and spacing all can according to the input capacitance of IC chip carry out the inductance coupling and resonance on the frequency of a certain needs; The aluminium thin layer of another side then only is designed to intercoil connection, its objective is to allow intercoil connection connect outer ring antenna and inner ring antenna, constitutes the loop.The IC chip is provided with salient point and can be connected with the aluminium electrode points on the aerial coil, by Anisotropically conductive glue the salient point on the IC chip is heated cure under pressure on the aluminium electrode points of antenna usually, and directly links to each other.Be illustrated in figure 1 as electronic tag of the prior art (the employing substrate front side is established aerial coil, reverse side is established the intercoil connection technology), intercoil connection 3 connects aluminum antenna coil 1 by aluminum antenna coil 1 head, terminal riveting point 2, constitute the loop, aluminium electrode points 4 is used to connect the chip (not shown).

When the size of electronic tag does not have under the situation of specific (special) requirements, adopt front wiring, the reverse side method that connects of passing a bridge can produce needed etching antenna, this also is a common FlipChip technology method commonly used.

In the time of the work of HF (high frequency) type electronic tag, be to produce the wireless-modulated carrier signal by the emitting antenna that card reader connects.Apart from internal induction and receive this carrier energy and reliably working, the principle analogy is the primary and secondary coil of transformer to electronic label antenna certain.Elementary then is emitting antenna, and secondary then is the electronic tag etching antenna.

The induced voltage magnitude relationship is rate of change U=-d Φ (the t)/dt of magnetic flux to the time.

In uniform magnetic field, magnetic flux

Φ=B×S×COSθ

Wherein, B is a magnetic induction density; S is the magnetic line of force area that can pass through; θ is the angle of coil in magnetic field, perpendicular to magnetic direction, then can ignore.In the use of electronic tag,, therefore can think that magnetic induction density B is constant substantially because the aerial signal that card reader is sent is constant signal substantially.Influence induced voltage size then mainly be area S.

When special occasions requires to make small-size electronic tag, front wiring adds reverse side and crosses bridge method with regard to the obvious problem that produced in the prior art, because reduce (and the coil line length is constant) along with the electronic tag size, internal coil diameter will reduce, be that area S reduces, this has just influenced the quantity of center by the magnetic line of force, causes the obvious decline of induced voltage, thereby has influenced the operate as normal of electronic tag.

Summary of the invention

The method for making that the purpose of this invention is to provide a kind of high-frequency small-size radio frequency identification and etching antenna thereof makes small-size electronic tag have bigger aerial coil internal diameter, improves magnetic flux, thereby has improved the serviceability of small-size electronic tag.

In order to achieve the above object, technical scheme of the present invention is: a kind of high-frequency small-size radio frequency identification, and comprise substrate, be arranged on the antenna on the substrate, described antenna comprises the multiturn aerial coil, is separately positioned on the pro and con of substrate; Also be provided with a plurality of riveting points on the substrate, the aerial coil that this riveting point will be arranged on the positive and negative two sides of substrate is communicated with.

Above-mentioned high-frequency small-size radio frequency identification, wherein, the head of the aerial coil on the described substrate front side, last two ends are respectively equipped with a riveting point; Head, the last two ends of the aerial coil on the described substrate reverse side are respectively equipped with a riveting point; On the described substrate front side on the riveting point of head end and the substrate reverse side riveting point of head end be connected by conductive material, on the described substrate front side on terminal riveting point and the substrate reverse side terminal riveting point be connected the aerial coil formation loop on the positive and negative two sides of substrate by conductive material.

Above-mentioned high-frequency small-size radio frequency identification, wherein, the coil direction of the aerial coil on the positive and negative two sides of described substrate is opposite.

Above-mentioned high-frequency small-size radio frequency identification, wherein, the aerial coil on the positive and negative two sides of described substrate is corresponding respectively to be provided with, and coincides.

A kind of etching antenna method for making that is applied to high-frequency small-size radio frequency identification may further comprise the steps:

Step 1 respectively is covered with the layer of metal paper tinsel at the pro and con of substrate;

Step 2 is printed positive surface antenna wiring pattern, reverse side antenna wiring pattern respectively to the metal forming of substrate front side and reverse side;

Step 3 etches antenna on substrate;

Step 4 is with the antenna on the positive and negative two sides of connection substrate, the riveting point on the positive and negative two sides of substrate.

The above-mentioned etching antenna method for making that is applied to high-frequency small-size radio frequency identification, wherein, described step 2 also comprises following steps,

Step 2.1 applies light-sensitive emulsion respectively, drying on the metal forming of the positive and negative two sides of substrate;

Step 2.2 by a slice, thin piece with front wiring pattern, is carried out illumination to it with dried substrate front side;

Step 2.3 by a slice, thin piece with back wiring pattern, is carried out illumination to it with the substrate reverse side;

Step 2.4, dry substrate.

The above-mentioned etching antenna method for making that is applied to high-frequency small-size radio frequency identification, wherein, described step 3 also comprises following steps,

Step 3.1 is put into chemical development liquid with the substrate after the illumination, and this moment, the illumination part of photoresists was washed off, exposed metal;

Step 3.2 is put into etch bath with substrate, and all are not etched by the metal of photoresists cover part, obtain required antenna;

Step 3.3, dry substrate.

The above-mentioned etching antenna method for making that is applied to high-frequency small-size radio frequency identification, wherein, described step 2 also comprises following steps,

Step 2.1 is printed positive surface antenna wiring pattern to the metal forming of substrate front side with anticorrosion printing ink;

Step 2.2 is printed reverse side antenna wiring pattern to the metal forming of substrate reverse side with anticorrosion printing ink;

Step 2.3, dry substrate.

The above-mentioned etching antenna method for making that is applied to high-frequency small-size radio frequency identification, wherein, described step 3 also comprises following steps,

Step 3.1 is put into etch bath with substrate, and the part that is not printed anticorrosion printing ink is washed off;

Step 3.2, the anticorrosion printing ink on the cleaning base plate exposes metal;

Step 3.3, dry substrate.

The above-mentioned etching antenna method for making that is applied to high-frequency small-size radio frequency identification, wherein, described step 4 is injected conductive material for puncturing the riveting point on the positive and negative two sides of base material, connects the antenna on the positive and negative two sides of substrate, dry back etching antenna.

The present invention makes it compared with prior art owing to adopt technique scheme, has the following advantages and good effect:

The method for making of high-frequency small-size radio frequency identification of the present invention and etching antenna thereof is owing to adopt substrate front side, reverse side that aerial coil is set respectively, therefore just can utilize the substrate edges small space to finish the wiring of multiturn aerial coil, therefore, even reduce the electronic tag size, also can not reduce aerial coil internal diameter size, improve the serviceability of small-size electronic tag greatly.

Description of drawings

Fig. 1 is the structural representation of electronic tag of the prior art.

Fig. 2 is the Facad structure synoptic diagram of high-frequency small-size radio frequency identification of the present invention.

Fig. 3 is the reverse side structural representation of high-frequency small-size radio frequency identification shown in Figure 2.

Fig. 4 is the process flow diagram that the present invention is applied to the etching antenna method for making of high-frequency small-size radio frequency identification.

Embodiment

Below specify better embodiment of the present invention referring to accompanying drawing:

Referring to Fig. 2, Fig. 3, a kind of high-frequency small-size radio frequency identification comprises substrate 5, is arranged on the antenna on the substrate 5, it is characterized in that described antenna comprises multiturn aerial coil 6 and 7, is separately positioned on the pro and con of substrate 5; Also be provided with a plurality of riveting points on the substrate 5, the aerial coil 6 and 7 that this riveting point will be arranged on substrate 5 positive and negative two sides is communicated with.

Present embodiment is the high-frequency small-size radio frequency identification that comprises 8 circle aerial coils, referring to Fig. 2, be depicted as the Facad structure synoptic diagram of high-frequency small-size radio frequency identification of the present invention, because the mode that adopts the pro and con of substrate all to establish aerial coil, therefore, the front of substrate only is provided with four circle aerial coils 6.The head of described coil 6, last two ends are respectively equipped with a riveting point 2A 1And 2A 2, aerial coil 6 disconnects at a place, and the two ends of gap are respectively equipped with the electrode points 4 that is used to connect chip.In the present embodiment, from the most inboard end (being the head end of aerial coil 6) of aerial coil 6, aerial coil 6 coils four circles along clockwise direction, locates to finish at aerial coil 6 outermost ends (being the end of aerial coil 6), in the place that is provided with electrode points 4, aerial coil 6 disconnects.

Referring to Fig. 3, be depicted as the reverse side structural representation of high-frequency small-size radio frequency identification of the present invention, the reverse side of substrate 5 is provided with four circle aerial coils 7.The head of described aerial coil 7, last two ends respectively are provided with a riveting point 2B respectively 1And 2B 2In the present embodiment, from the most inboard end (being the head end of aerial coil 7) of aerial coil 7, aerial coil 7 coils four circles along clockwise direction, locates to finish at aerial coil 7 outermost ends (being the end of aerial coil 7).

The riveting point 2A of aerial coil 6 head ends 1Riveting point 2B with aerial coil 7 head ends 1Overlap the riveting point 2A of substrate antenna coil 6 ends 2Riveting point 2B with aerial coil 7 ends 2Overlap, and riveting point 2A 1With riveting point 2B 1Pass through to electric material and connect riveting point 2A 2With riveting point 2B 2Passing through to electric material connects.

In order to make internal coil diameter maximization, described aerial coil 6 and aerial coil 7 correspondence respectively are arranged on substrate 5 positive and negative and coincide.

The entire antenna of high-frequency small-size radio frequency identification of the present invention constitutes the loop that interior loop is connected with exterior loop, no longer needs intercoil connection.

Comparison diagram 1 and Fig. 2 can find out, under the measure-alike situation of electronic tag, the internal diameter of aerial coil 6 has obviously increased manyly among Fig. 2 than the internal diameter of aerial coil among Fig. 1, has increased effectively and can make the serviceability of electronic tag strengthen by the area S of the magnetic line of force.

Referring to Fig. 4, technical solution of the present invention also relates to a kind of etching antenna method for making that is applied to high-frequency small-size radio frequency identification, may further comprise the steps:

Step 1 respectively is covered with the layer of metal paper tinsel at the pro and con of substrate;

Step 2 is printed positive surface antenna wiring pattern, reverse side antenna wiring pattern respectively to the metal forming of substrate front side and reverse side;

Step 3 etches antenna on substrate;

Step 4 is with the antenna on the positive and negative two sides of connection substrate, the riveting point on the positive and negative two sides of substrate.

Embodiment one:

A kind of etching antenna method for making that is applied to high-frequency small-size radio frequency identification may further comprise the steps:

Step 1 respectively is covered with the layer of metal paper tinsel at the pro and con of substrate;

Step 2 is printed positive surface antenna wiring pattern, reverse side antenna wiring pattern respectively to the metal forming of substrate front side and reverse side;

Step 2.1 applies light-sensitive emulsion respectively, drying on the metal forming of the positive and negative two sides of substrate;

Step 2.2 by a slice, thin piece with front wiring pattern, is carried out illumination to it with dried substrate front side;

Step 2.3 by a slice, thin piece with back wiring pattern, is carried out illumination to it with the substrate reverse side;

Step 2.4, dry substrate;

Step 3 etches antenna on substrate;

Step 3.1 is put into chemical development liquid with the substrate after the illumination, and this moment, the illumination part of photoresists was washed off, exposed metal;

Step 3.2 is put into etch bath with substrate, and all are not etched by the metal of photoresists cover part, obtain required antenna;

Step 3.3, dry substrate;

Step 4 is with the antenna on the positive and negative two sides of connection substrate, the riveting point on the positive and negative two sides of substrate;

Puncture the riveting point on the positive and negative two sides of base material, inject conductive material, connect the antenna on the positive and negative two sides of substrate, dry back etching antenna.

Embodiment two:

A kind of etching antenna method for making that is applied to high-frequency small-size radio frequency identification may further comprise the steps:

Step 1 respectively is covered with the layer of metal paper tinsel at the pro and con of substrate;

Step 2 is printed positive surface antenna wiring pattern, reverse side antenna wiring pattern respectively to the metal forming of substrate front side and reverse side;

Step 2.1 is printed positive surface antenna wiring pattern to the metal forming of substrate front side with anticorrosion printing ink;

Step 2.2 is printed reverse side antenna wiring pattern to the metal forming of substrate reverse side with anticorrosion printing ink;

Step 2.3, dry substrate;

Step 3 etches antenna on substrate;

Step 3.1 is put into etch bath with substrate, and the part that is not printed anticorrosion printing ink is washed off;

Step 3.2, the anticorrosion printing ink on the cleaning base plate exposes metal;

Step 3.3, dry substrate;

Step 4 is with the antenna on the positive and negative two sides of connection substrate, the riveting point on the positive and negative two sides of substrate;

Puncture the riveting point on the positive and negative two sides of base material, inject conductive material, connect the antenna on the positive and negative two sides of substrate, dry back etching antenna.

Metal forming in the described step 1 can be aluminium foil or Copper Foil, and the substrate in the described step 1 can be a mylar.

Claims (10)

1. a high-frequency small-size radio frequency identification comprises substrate (5), is arranged on the antenna on the substrate (5), it is characterized in that described antenna comprises multiturn aerial coil (6) and (7), is separately positioned on the pro and con of substrate (5); Substrate also is provided with a plurality of riveting points on (5), and aerial coil (6) and (7) that this riveting point will be arranged on the positive and negative two sides of substrate (5) are communicated with.
2. high-frequency small-size radio frequency identification as claimed in claim 1 is characterized in that, the head of described aerial coil (6), last two ends are respectively equipped with a riveting point (2A 1) and (2A 2); The head of described aerial coil (7), last two ends are respectively equipped with a riveting point (2B 1) and (2B 2); Described riveting point (2A 1) and riveting point (2B 1) connect described riveting point (2A by conductive material 2) and riveting point (2B 2) connect by conductive material, aerial coil (6) and aerial coil (7) constitute the loop.
3. high-frequency small-size radio frequency identification as claimed in claim 2 is characterized in that, the coil direction of described aerial coil (6) and aerial coil (7) is opposite, and promptly aerial coil (6) is when clockwise direction is coiled, and aerial coil (7) is around coiling counterclockwise.
4. as claim 1 or 3 described high-frequency small-size radio frequency identifications, it is characterized in that described aerial coil (6) and aerial coil (7) correspondence respectively are arranged on substrate (5) positive and negative and coincide.
5. an etching antenna method for making that is applied to high-frequency small-size radio frequency identification is characterized in that, may further comprise the steps:
Step 1 respectively is covered with the layer of metal paper tinsel at the pro and con of substrate;
Step 2 is printed positive surface antenna wiring pattern, reverse side antenna wiring pattern respectively to the metal forming of substrate front side and reverse side;
Step 3 etches antenna on substrate;
Step 4 is with the antenna on the positive and negative two sides of connection substrate, the riveting point on the positive and negative two sides of substrate.
6. the etching antenna method for making that is applied to high-frequency small-size radio frequency identification as claimed in claim 5 is characterized in that described step 2 also comprises following steps,
Step 2.1 applies light-sensitive emulsion respectively, drying on the metal forming of the positive and negative two sides of substrate;
Step 2.2 by a slice, thin piece with front wiring pattern, is carried out illumination to it with dried substrate front side;
Step 2.3 by a slice, thin piece with back wiring pattern, is carried out illumination to it with the substrate reverse side;
Step 2.4, dry substrate.
7. the etching antenna method for making that is applied to high-frequency small-size radio frequency identification as claimed in claim 6 is characterized in that described step 3 also comprises following steps,
Step 3.1 is put into chemical development liquid with the substrate after the illumination, and this moment, the illumination part of photoresists was washed off, exposed metal;
Step 3.2 is put into etch bath with substrate, and all are not etched by the metal of photoresists cover part, obtain required antenna;
Step 3.3, dry substrate.
8. the etching antenna method for making that is applied to high-frequency small-size radio frequency identification as claimed in claim 5 is characterized in that described step 2 also comprises following steps,
Step 2.1 is printed positive surface antenna wiring pattern to the metal forming of substrate front side with anticorrosion printing ink;
Step 2.2 is printed reverse side antenna wiring pattern to the metal forming of substrate reverse side with anticorrosion printing ink;
Step 2.3, dry substrate.
9. the etching antenna method for making that is applied to high-frequency small-size radio frequency identification as claimed in claim 8 is characterized in that described step 3 also comprises following steps,
Step 3.1 is put into etch bath with substrate, and the part that is not printed anticorrosion printing ink is washed off;
Step 3.2, the anticorrosion printing ink on the cleaning base plate exposes metal;
Step 3.3, dry substrate.
10. the etching antenna method for making that is applied to high-frequency small-size radio frequency identification as claimed in claim 5, it is characterized in that described step 4 is injected conductive material for puncturing the riveting point on the positive and negative two sides of base material, the antenna that connects the positive and negative two sides of substrate, dry back etching antenna.
CN200910045792A 2009-02-06 2009-02-06 High-frequency small-size radio frequency identification and manufacturing method of etching antenna thereof CN101799882A (en)

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CN200910045792A CN101799882A (en) 2009-02-06 2009-02-06 High-frequency small-size radio frequency identification and manufacturing method of etching antenna thereof

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Application Number Priority Date Filing Date Title
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CN101799882A true CN101799882A (en) 2010-08-11

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102663486A (en) * 2012-04-04 2012-09-12 上海祯显电子科技有限公司 Miniature intelligent label
WO2012122743A1 (en) * 2011-03-11 2012-09-20 中兴通讯股份有限公司 Mobile terminal with radio frequency identification function
CN102955976A (en) * 2012-01-12 2013-03-06 厦门英诺尔电子科技股份有限公司 Fragile anti-fake RFID (Radio Frequency Identification) etched electronic tag and manufacturing process thereof
CN103034900A (en) * 2013-01-16 2013-04-10 厦门英诺尔信息科技有限公司 High-frequency fragile anti-counterfeiting anti-transfer RFID (Radio Frequency Identification) electronic tag and manufacturing method thereof
CN103186811A (en) * 2011-12-27 2013-07-03 中国人民银行印制科学技术研究所 Anti-forgery product
CN103295057A (en) * 2013-05-09 2013-09-11 杭州电子科技大学 Easy-to-tear ultrahigh-frequency RFID (radio frequency identification) anti-counterfeit tag and production method thereof
CN104050500A (en) * 2014-06-27 2014-09-17 南通富士通微电子股份有限公司 Forming method of electronic tag
CN104541292A (en) * 2012-02-13 2015-04-22 英特尔公司 Antenna configuration to facilitate near field coupling
CN105608484A (en) * 2015-12-11 2016-05-25 深圳市卡的智能科技有限公司 Rfid antenna and electronic label
CN104036317B (en) * 2014-06-27 2017-12-08 通富微电子股份有限公司 The forming method of electronic tag

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012122743A1 (en) * 2011-03-11 2012-09-20 中兴通讯股份有限公司 Mobile terminal with radio frequency identification function
CN103186811A (en) * 2011-12-27 2013-07-03 中国人民银行印制科学技术研究所 Anti-forgery product
CN102955976A (en) * 2012-01-12 2013-03-06 厦门英诺尔电子科技股份有限公司 Fragile anti-fake RFID (Radio Frequency Identification) etched electronic tag and manufacturing process thereof
CN102955976B (en) * 2012-01-12 2016-06-15 厦门英诺尔电子科技股份有限公司 A kind of frangible false proof RFID etches electronic tag and manufacturing process thereof
CN104541292A (en) * 2012-02-13 2015-04-22 英特尔公司 Antenna configuration to facilitate near field coupling
CN104541292B (en) * 2012-02-13 2017-05-17 英特尔公司 Antenna configuration to facilitate near field coupling
CN102663486B (en) * 2012-04-04 2016-03-30 上海仪电智能电子有限公司 A kind of Miniature intelligent label
CN102663486A (en) * 2012-04-04 2012-09-12 上海祯显电子科技有限公司 Miniature intelligent label
CN103034900A (en) * 2013-01-16 2013-04-10 厦门英诺尔信息科技有限公司 High-frequency fragile anti-counterfeiting anti-transfer RFID (Radio Frequency Identification) electronic tag and manufacturing method thereof
CN103295057B (en) * 2013-05-09 2015-11-25 杭州电子科技大学 One easily tears high-frequency RF ID antifalsification label and manufacture method thereof
CN103295057A (en) * 2013-05-09 2013-09-11 杭州电子科技大学 Easy-to-tear ultrahigh-frequency RFID (radio frequency identification) anti-counterfeit tag and production method thereof
CN104050500A (en) * 2014-06-27 2014-09-17 南通富士通微电子股份有限公司 Forming method of electronic tag
CN104036317B (en) * 2014-06-27 2017-12-08 通富微电子股份有限公司 The forming method of electronic tag
CN105608484A (en) * 2015-12-11 2016-05-25 深圳市卡的智能科技有限公司 Rfid antenna and electronic label

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Application publication date: 20100811