WO2014025177A1 - Étiquette de communication sans fil double face et son procédé de fabrication - Google Patents

Étiquette de communication sans fil double face et son procédé de fabrication Download PDF

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Publication number
WO2014025177A1
WO2014025177A1 PCT/KR2013/007046 KR2013007046W WO2014025177A1 WO 2014025177 A1 WO2014025177 A1 WO 2014025177A1 KR 2013007046 W KR2013007046 W KR 2013007046W WO 2014025177 A1 WO2014025177 A1 WO 2014025177A1
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WIPO (PCT)
Prior art keywords
layer
wireless communication
communication tag
electromagnetic wave
double
Prior art date
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PCT/KR2013/007046
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English (en)
Korean (ko)
Inventor
최은국
Original Assignee
하이쎌 주식회사
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Publication of WO2014025177A1 publication Critical patent/WO2014025177A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
    • G06K19/07767—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier

Definitions

  • the present invention relates to a wireless communication tag technology, and more particularly, it is possible to transmit and receive information independently of each other without electromagnetic interference of the other tag, the two-sided wireless communication tag having a high tag read rate, a manufacturing method thereof and its It is about the application.
  • RF-ID Radio Frequency Identification
  • Magnetic card system is closely used in our life, but it is developed by the change of production method, the change of consumer's consciousness, the advancement of culture and technology, and the need to solve the shortcomings of barcode and magnetic card.
  • the RF-ID card may be referred to as a representative of a contactless card. Unlike other contact cards, the RF-ID card does not require the user to insert the card into the reader, and since there is no mechanical contact, there is no friction or damage, and there is little pollution or environmental influence.
  • NFC Near Field Communication
  • NFC can transmit and receive data between information devices, and can send and receive address books, games, and MP3 files directly from a cell phone to a cell phone.
  • NFC technology has high stability and is still used for mobile payments such as transportation cards, and is widely used not only for payment but also for transporting goods information or travel information for visitors, traffic, and access control lock devices in supermarkets or general stores.
  • Korean Patent Laid-Open Publication No. 10-2012-0030987 discloses an antenna circuit including an antenna coil having one magnetic axis and at least one integrated circuit connected to the antenna circuit.
  • the technology regarding the NFC card containing is described.
  • NFC card 1 is a plan view of the NFC card presented in the above-mentioned Patent Publication No. 10-2012-0030987, which includes a plastic body 10, an integrated circuit 20, an antenna coil 30 and a tuning capacitor 40, 41. A tuning antenna circuit and a contact pad group 50.
  • the NFC card 1 is described with respect to an NFC tag (card) comprising an antenna circuit comprising an antenna coil 30 having one magnetic axis and an integrated circuit 20 connected to the antenna circuit.
  • Korean Patent Publication No. 10-0693204 discloses a first layer in which an antenna coil is disposed, a second layer for ground shielding, and a third layer of a plastic sheet.
  • a terminal and a card having an antenna for NFC including a layer and a fourth layer in which a receiving distance expanding coil is formed separately from the antenna coil to form a closed loop independently.
  • the wireless communication tags including the conventional NFC tag including the prior art document can store only one related information and communicate with the reader, so that the NFC tag cannot expand its use except for one use corresponding thereto. There are disadvantages.
  • the antenna of the NFC card is generally formed through a process such as etching to form a conductive layer in this case there is a problem that the process is complicated, expensive and a lot of harmful substances are discharged.
  • an object of the present invention is to provide a double-sided wireless communication tag and a method of manufacturing the same that can transmit and receive information independently of each other without electromagnetic interference on the other side of the tag.
  • the present invention provides a method of using the double-sided wireless communication tag, a method of enabling information exchange with wireless communication recognizers located at two different places by using one double-sided wireless communication tag.
  • the present invention is independent of each information stored in the double-sided wireless communication tag using a smart phone (portable terminal) that can exchange data with the double-sided wireless communication tag by attaching the double-sided wireless communication tag on the surface of the transparent flat plate It is possible to provide a method of using the double-sided wireless communication tag to read or to store different information independently to the double-sided wireless communication tag.
  • the present invention provides a first wireless communication tag layer including a first substrate and a first antenna and an IC chip formed on the first substrate 200; A second wireless communication tag layer 600 including a second substrate different from the first substrate, a second antenna and an IC chip formed on the second substrate; And an electromagnetic wave shielding layer 400 made of metal provided between the first wireless communication tag layer 200 and the second wireless communication tag layer 600.
  • the tag layer and the second wireless communication tag layer each provide a double-sided wireless communication tag, characterized in that the NFC tag layer that can communicate in the 13.56Mhz region.
  • a first electromagnetic wave absorber layer may be provided between the first wireless communication tag layer and the electromagnetic wave shielding material layer
  • a second electromagnetic wave absorber layer may be provided between the second wireless communication tag layer and the electromagnetic wave shielding material layer.
  • the present invention is to form a first antenna on a first substrate and to surface-mount an IC chip connected to the first antenna to manufacture a first wireless communication tag layer 200, a second substrate different from the first substrate Manufacturing a second wireless communication tag layer 600 by forming a second antenna on the surface and surface-mounting an IC chip connected to the second antenna;
  • a non-conductive adhesive layer is formed on the bottom surface of the first wireless communication tag layer 200 and the top surface of the second wireless communication tag layer 600, respectively, and a first electromagnetic wave is formed on the bottom surface of the first wireless communication tag layer 200.
  • the present invention also provides a first wireless communication tag layer 200 including a first antenna and a first chip in the double-sided wireless communication tag and the first information included in the first wireless communication tag layer 200.
  • a method of using a double-sided wireless communication tag to enable information exchange with an NFC wireless communication reader located in another place using a single double-sided NFC wireless communication tag.
  • the first information and the second information may be any one or more pieces of information selected from among a telephone number, a mobile phone number, an e-mail, a fax number, a homepage, access time, accessible information, account information, a photo, and a video, respectively. have.
  • each of the wireless communication tag layer of the two-sided wireless communication tag is made to use NFC communication, respectively, and fixed by attaching the double-sided NFC tag on the surface of the transparent plate having a thickness capable of transmitting and receiving NFC
  • the first NFC tag layer 200 including the first antenna and the IC chip including the first information is provided in the surface direction of the transparent plate, and the NFC communication is held by the user located on the surface side of the transparent plate.
  • a user's smartphone and the first NFC tag layer 200 may read or change the first information, and the IC chip including the second antenna and the second information may be included in the rear direction of the transparent flat plate.
  • the second NFC tag layer 200 is provided by the user located on the rear side of the transparent flat, the smartphone of the user capable of NFC and the second NFC tag layer 200 and read the second information from each other It provides a, method of using a duplex radio communication tag that is to be changed.
  • the transparent plate is a transparent plastic plate or glass plate
  • the first information and the second information is a phone number, mobile phone number, e-mail, fax number, homepage, access time, accessibility information, customer information, photos , One or more pieces of information selected from a video.
  • the double-sided wireless communication tag of the present invention not only transmits and receives two or more different pieces of information without interference of the electromagnetic waves of the opposite tag, but also reduces the electromagnetic interference on the opposite tag by an electromagnetic wave absorber having a high electromagnetic wave absorption rate, and provides high tag reading. 2 different from the front and rear of the window by applying the wireless communication tag of the present invention to a tag having a double-sided, such as a business card, pass card, or by attaching the tag to a transparent glass window, a transparent plastic plate, etc.
  • the above information can be transmitted and received without disturbing.
  • the method for manufacturing a wireless communication tag of the present invention uses a printing process of a conductive paste, which is not a conventional exposure and etching method, when forming an antenna pattern, or by treating metal plating on a conductive pattern by the conductive paste. It is economically advantageous and also has the advantage of reducing the occurrence of environmental pollutants and improving the reception rate of the antenna.
  • FIG. 1 is a plan view of an NFC card according to the prior art.
  • FIG. 2 is an exploded schematic diagram illustrating a double-sided wireless communication tag according to the present invention.
  • FIG. 3 is an exploded perspective view of a double-sided NFC tag according to the present invention.
  • FIG. 4 illustrates a plan view of separate layers for antenna formation according to an embodiment of the present invention.
  • FIG. 5 is a plan view of separate layers for antenna formation according to another embodiment of the present invention.
  • Figure 6 shows a figure in which copper plating is formed on the conductive pattern of the conductive paste and a chemical resistant coating is formed on the substrate to form the antenna pattern according to the present invention.
  • the present invention provides a first wireless communication tag layer including a first substrate and a first antenna and an IC chip formed on the first substrate; A second wireless communication tag layer 600 including a second substrate different from the first substrate, a second antenna and an IC chip formed on the second substrate; And an electromagnetic wave shielding layer 400 made of metal provided between the first wireless communication tag layer 200 and the second wireless communication tag layer 600.
  • the tag layer and the second wireless communication tag layer are each characterized in that the NFC tag layer that can communicate in the 13.56 Mhz region.
  • FIG. 2 is an exploded cross-sectional view schematically showing a laminated structure of a double-sided wireless communication tag according to the present invention
  • Figure 3 is an exploded perspective view of a double-sided NFC tag according to an embodiment of the present invention.
  • the double-sided wireless communication tag according to the present invention includes a first wireless communication tag layer 200 including a first antenna and an IC chip formed on a first substrate, and the first substrate.
  • the electromagnetic wave shielding material layer 400 includes the first wireless communication tag layer 200 and the first wireless communication tag layer 200 and the second wireless communication tag layer 600 so as to operate independently of each other. 2 is formed between the wireless communication tag layer 600 to block each electromagnetic wave from interfering with the opposite wireless communication tag.
  • the electromagnetic wave shielding material layer of the present invention uses this principle.
  • the electromagnetic shielding material which is made of a highly conductive metal, is laminated between the upper and lower wireless near field communication antennas between the wireless near field communication antennas and the first antenna, which is each of the near field communication antennas. Shielding between the second antenna.
  • the electromagnetic wave shielding layer 400 may be a metal substrate or a metal structure formed of a thin film including any one or more metals selected from gold, silver, iron, magnesium, aluminum, nickel, copper or an alloy thereof having excellent electromagnetic wave absorption rate.
  • an aluminum thin film can be used.
  • the electromagnetic shielding layer 400 may further include graphene, carbon nanotubes, or graphite having excellent electromagnetic wave absorption rates on the metal substrate or the metal structure, and may be a structure implemented by a sheet or screen, ink jet, or gravure printing. .
  • the electromagnetic shielding layer 400 may obtain the same electromagnetic shielding effect by printing a metal paste by a printing process on the electromagnetic wave absorber layers 300 and 500 described below.
  • Silver paste is preferable as the metal paste, and any method of printing may be used as long as it can be applied on the sheet, such as screen printing, inkjet, gravure, and slot die coating.
  • the electromagnetic wave shielding material layer may have a thickness of 0.001 to 1 mm, preferably 7 to 40 um.
  • the thickness of the electromagnetic wave shielding layer 400 is less than 0.001 mm, electromagnetic interference occurs between the first NFC tag 200 and the second NFC tag 600 to greatly reduce a tag read rate, and the electromagnetic shielding layer 400
  • the thickness of 1) exceeds 1 mm, the electromagnetic interference shielding between both tags is good, the tag read rate is increased, but the portability decreases due to an increase in the weight of the tag due to an increase in thickness, so that the electromagnetic shielding layer 400 ) Has a thickness of 0.001 to 1 mm.
  • the first electromagnetic wave absorber layer 300 and The second electromagnetic wave absorber layer 500 is laminated between the metal electromagnetic wave shielding material layer 400 and the NFC tag layers 200 and 600 including the respective wireless near-field communication antennas, thereby preventing electromagnetic waves caused by eddy current damage by the metal electromagnetic shielding agent. Can be absorbed.
  • the first electromagnetic wave absorber layer 300 and the second electromagnetic wave absorber layer 500 absorb unnecessary electromagnetic waves, remove magnetic field noise, suppress reflected waves, and absorb or reflect electrons, so that electromagnetic waves face each other. It is not affected by the electromagnetic shielding layer 400 which performs a function of shielding the antenna from being transmitted to the antenna.
  • the first electromagnetic wave absorber layer 300 and the second electromagnetic wave absorber layer 500 may each include 50 to 95 parts by weight of magnetic powder for magnetic wave absorption selected from a metal magnetic powder, an oxide magnetic powder, or a mixture thereof, and a binder. As may be made of 5 to 50 parts by weight of synthetic rubber, natural rubber or a mixture thereof.
  • the constituents of the electromagnetic wave absorber layer preferably include 70 to 95 parts by weight of magnetic powder for absorbing electromagnetic waves and 5 to 30 parts by weight of a binder, and any one or more selected from heat stabilizers, plasticizers and lubricants as additional components. It may be included as 1 to 10 parts by weight based on 100 parts by weight of the mixture of the binder and the magnetic powder.
  • the additional component may include graphene, carbon nanotubes, graphite, and the like having excellent electromagnetic wave absorption rate.
  • the thickness of the first electromagnetic wave absorber layer 300 and the second electromagnetic wave absorber layer 500 may have a range of 0.02 to 1 mm, more preferably 0.03 to 0.3 mm.
  • the thickness of the first and second electromagnetic wave absorber layers 300 and 500 is 0.02 mm or less, there is an advantage that the manufacturing cost is low, but the electromagnetic wave absorption efficiency is greatly reduced, and the first and second electromagnetic wave absorber layer 300 , 500) exceeds 1 mm, the electromagnetic wave absorption efficiency is further increased but the increase is reduced, the weight of the tag is increased, the portability is reduced and the manufacturing cost is increased, the first and the first The electromagnetic wave absorber layers 300 and 500 preferably have a thickness of 0.02 to 1 mm.
  • the electromagnetic wave absorber layer is formed between a pair of rolling rollers containing 50 to 95 parts by weight of magnetic powder having flattened platelets and 5 to 50 parts by weight of synthetic rubber, natural rubber or a mixture thereof as a binder. By extruding, it can be produced into a processed sheet.
  • the magnetic powder for electromagnetic wave absorption is preferably used in the form of plate-shaped particles, but may be used in the form of a variety of particles, such as spherical, needle-like, square, hexagonal.
  • the magnetic powder for absorbing electromagnetic waves may use metal-based ferromagnetic powder, oxide-based ferromagnetic powder, or a mixture thereof.
  • the metal-based magnetic powder may be an iron or an alloy containing iron or a mixture thereof, and the alloy containing iron may be Fe-Ni, Fe-Co, Fe-Cr, Fe-Si, Fe-Al. Any one selected from the group consisting of Fe-Cr-Si, Fe-Cr-Al, Fe-Al-Si, Fe-B-Si and Co-Fe-Ni-Si-Fe-B have.
  • the oxide-based magnetic powder is preferably used in terms of efficiency and economical efficiency, ZnFe 2 O 4 , MnFe 2 O 4 , CoFe 2 O 4 , NiFe 2 O 4 , CuFe 2 O 4 , Fe 3 O 4 , Cu-Zn-ferrite, Mn-Zn-ferrite, at least one selected from the first ferrite based on Ni-Zn-ferrite, or Ba 2 Co 2 Fe 12 O 22 , Ba 2 Ni 2 Fe 12 O 22 , Ba 2 Zn 2 Fe 12 O 22 , Ba 2 Mn 2 Fe 12 O 22 , Ba 2 Mg 2 Fe 12 O 22 , Ba 2 Cu 2 Fe 12 O 22 , Ba 3 Co 2 Fe 24 O 41 At least one selected from the second ferrite, or BaFe 12 O 19 , SrFe 12 O 19, and Fe elements of these BaFe 12 O 19 , SrFe 12 O 19 , substituted with Ti, Co, Mn, Cu, Zn, Ni, Mg At least 1 sort (s) chosen
  • the first ferrite may have a spinel structure
  • the second ferrite may be a hexagonal ferrite having a perox planner (Y-type or Z-type) type
  • the third ferrite may be a magnetoprombite (M). Hexagonal ferrite is preferable in terms of absorber efficiency.
  • the ferrite may be used in addition to the ferrite of the above-described form as well as the ferrite of each of the ferrite or a mixture of the first to the third ferrite.
  • the synthetic rubber may be used as an elastomer having a saturated polymer of polymethylene (Poly Methylene) type, an elastomer having nitrogen in a polymer backbone, an elastomer having oxygen in a polymer backbone, an elastomer having silicon in a polymer backbone, One or two selected from elastomers having sulfur in the polymer backbone, diene-based elastomers with unsaturated carbon bonds in the main chain, elastomers with carbon and oxygen and nitrogen in the polymer backbone, and elastomers with phosphorus and nitrogen in the polymer backbone There is a mixture of the above.
  • Poly Methylene polymethylene
  • the rubber When the rubber is less than 5 parts by weight based on the total weight, the hardness is high and can be easily broken. When the rubber is used in excess of 50 parts by weight, the function of the electromagnetic wave absorber is lowered, so it is preferable to use 5 to 50 parts by weight.
  • the particle size of the powder is preferably less than 0.5 ⁇ m because the function as an electromagnetic wave absorber is lowered, if the particle size exceeds 1,000 ⁇ m is increased wear rate and workability of the equipment is preferably 0.5 ⁇ 1,000 ⁇ m.
  • the magnetic powder used in the electromagnetic wave absorber of the present invention is less than 50 parts by weight of the total weight, the effect of adding the electromagnetic wave absorbing filler is insignificant, and the function is reduced as the electromagnetic wave absorber. It is preferable that content is 50-95 weight part.
  • the electromagnetic wave absorber may add a conventional additive in consideration of the ease of the process and the stability of the absorber layer.
  • the additive chosen from 1 type or more from the group which consists of a heat stabilizer, a plasticizer, and a lubricating agent can be used.
  • the heat stabilizer of the additive is an additive that maintains the thermal stability of the rubber during the manufacturing process accompanied with a lot of heat, it is preferable to use 1 to 10 parts by weight based on 100 parts by weight of the mixture of the rubber and the electromagnetic wave absorber, the heat stabilizer If the content of less than 1 part by weight is not enough to maintain the thermal stability of the rubber, if the content of more than 10 parts by weight is about one fifth of the soft magnetic material is contained in a large amount so that the distance between the powder too far It is preferable to use within the above range because it causes a blooming phenomenon.
  • the plasticizer is added to the rubber to lower the glass transition temperature, reduce the crystallinity and melting point to soften the rubber, it is preferable to use 1 to 10 parts by weight based on 100 parts by weight of the mixture of the rubber and the electromagnetic wave absorbing filler. . If the content of the plasticizer is less than 1 part by weight, the plasticization efficiency is lowered and the rubber is not softened. If the content of the plasticizer is greater than 15 parts by weight, the plasticizer after plasticizing the rubber is bonded to the absorbent filler powder. Over time, the blooming of plasticizers on the surface can occur.
  • the lubricant is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the mixture of the rubber and the electromagnetic wave absorbing filler as an additive that increases productivity and processability and increases the stabilization efficiency of the stabilizer. If the amount of the lubricant is used less than 1 part by weight productivity and processability is lowered, when used in excess of 5 parts by weight due to the phenomenon of blooming occurs to the surface over time it is preferable to use within the above range.
  • the present invention can be seen in Figure 2, the first wireless communication tag layer 200, the first electromagnetic wave absorber layer 300, the electromagnetic wave shielding material layer 400, the second electromagnetic wave absorber layer 500 and A nonconductive adhesive layer may be provided between each layer of the second wireless communication tag layer 600.
  • the non-conductive adhesive layer is a non-conductive adhesive film for bonding each layer, and may be a film, sheet, or pad type, and it is preferable to use a material that maintains adhesive strength even at high temperatures.
  • the first adhesive film 810 to the sixth adhesive film 860 in FIG. 2 may be selected from an acrylic double-sided adhesive film, a hot melt type EVA (vinyl acetate) adhesive film, and a butyl rubber-based spray type adhesive film.
  • a double-sided adhesive film can be used.
  • the first adhesive film 810 to the sixth adhesive film 860 may be cured under a predetermined condition to have adhesiveness, and after adhesion, may have properties of high heat resistance and chemical stability.
  • the non-conductive adhesive layer may be omitted or overlapped depending on necessity or process conditions, and may be selected from the acrylic double-sided adhesive film, hot melt type EVA (vinyl acetate) double-sided adhesive film, and butyl rubber-based spray type adhesive film. It can be formed by laminating any non-conductive adhesive film, or by spraying a non-conductive adhesive selected from an acrylic adhesive, a hot melt type EVA (vinyl acetate) adhesive, a butyl rubber adhesive.
  • first protective sheet layer 100 is formed on the outer surface of the first wireless communication tag layer 200 in the present invention and the second protective sheet layer 700 on the outer surface of the second wireless communication tag layer 600. ) May be formed.
  • the protective sheet layer serves to protect the wireless communication tag layer and can also provide a function of indicating the purpose of the wireless communication tag to a user.
  • the protection sheet layer may be displayed including personal information of the user or information such as a picture to be displayed by the user.
  • a first protective sheet layer 100 is formed on the upper end of the first wireless communication tag layer 200.
  • the first electromagnetic wave absorber layer 300 is formed by laminating by an adhesive film 810, and the lower end of the first wireless communication tag layer 200 is laminated by a non-conductive second adhesive film 820.
  • the lower end of the electromagnetic wave shielding material layer 400 is laminated by the third adhesive film 830.
  • a second electromagnetic wave absorber layer 500 is laminated by the fourth adhesive film 840, and at the bottom thereof, the second wireless communication tag layer 600 is laminated by the fifth adhesive film 850.
  • the second protective sheet layer 700 laminated by the sixth adhesive film 860 is formed at a lower end of the second wireless communication tag layer 600.
  • the double-sided wireless communication tag shown in Figure 2 which is an embodiment of the present invention sequentially from the top, the first protective sheet layer 100, the first adhesive film 810, the first wireless communication tag layer 200, The second adhesive film 820, the first electromagnetic wave absorber layer 300, the third adhesive film 830, the electromagnetic wave shielding material layer 400, the fourth adhesive film 840, the second electromagnetic wave absorber layer 500, The fifth adhesive film 850, the second wireless communication tag layer 600, the sixth adhesive film 860, and the second protective sheet layer 700 may be sequentially stacked.
  • the first wireless communication tag layer 200 and the second wireless communication tag layer 600 have an IC chip in which an antenna and a circuit for storing and transmitting and receiving information are integrated on each nonconductive substrate.
  • the antennas of the first wireless communication tag layer 200 and the second wireless communication tag layer 600 may include any one or more metals of conductive paste, aluminum, copper, gold, silver, and nickel.
  • the tag has an IC chip electrically connected to the antenna.
  • the IC chip surface-mounted on the first wireless communication tag layer 200 and the second wireless communication tag layer 600 may be an NFC communication chip corresponding to a standard such as ISO 14443A, ISO 14443B, or ISO 18092, or 860-960.
  • An RFID communication chip capable of communicating in the MHz region can be used.
  • the first substrate and the second substrate forming the base of the first wireless communication tag layer 200 and the second wireless communication tag layer 600 are polybutylene terephthalate, polyethylene terephthalate, polysulfone, and polyether. It may be any one selected from polyether imide, polyarylate, polyimide and paper, but is not limited thereto, and preferably includes a property that can be bent for processability and user convenience.
  • the antenna of the first wireless communication tag layer 200 or the antenna of the second wireless communication tag layer may be manufactured by a printing process of a conductive paste. More specifically, the antenna of the wireless communication tag layer is any one selected from a screen printing method, an inkjet method, a gravure printing method, a solution deposition method, a spray coating method, or a nozzle coating method on a substrate or an electromagnetic wave absorber layer. It can be formed into a thin film form by a process.
  • the size of the wireless communication antenna can be applied in a variety of sizes, as an embodiment of the antenna formed on the NFC tag layer has a viscosity range of 10000 to 40000 cPs using a 420 poly or sus screen mask, Using a silver paste having a particle size of 3 to 30 ⁇ m, a loop antenna pattern may be formed to form a thin film pattern by a screen printing method.
  • the silver paste may be patterned by curing at 80 ° C. to 200 ° C. for 10 minutes to 3 hours.
  • the mesh of the screen mask required for screen printing may be poly 300 mesh. have.
  • composition and viscosity and particle size of the paste may be variously converted, and the printing method may also be printed using an inkjet method, a gravure printing method, a nozzle coating method, or the like.
  • a conductive loop antenna pattern is primarily formed in a form in which both ends are not connected by using a conductive paste printing process on a substrate, and as shown in the interruption diagram of FIG. 4, the loop antenna
  • the insulating printed layer 220 is formed on the pattern by using an insulating paste, and the contact positions at both ends of the loop antenna pattern form conductive patterns to conduct electricity with the contact portions of the conductive loop antennas below.
  • each antenna pattern may be formed by connecting the contact portions of the conductive loop antennas on the insulating printed layer to each other by using a conductive paste to form a finished portion pattern 230.
  • the insulating printed layer 220 may use an organic or inorganic insulating material or an insulating polymer, and in one embodiment, 80 to 200 degrees, preferably 100 to 140 degrees after screen printing a UV curable insulating paste. It can be formed by drying for 10 minutes to 3 hours at.
  • the double-sided wireless communication tag may manufacture an antenna by forming a via hole in each substrate or electromagnetic wave absorber layer so that the substrate or electromagnetic wave absorber layer serves as the insulating printed layer.
  • FIG. 5 illustrates a plan view of a tag layer in which an antenna is formed on a substrate or an electromagnetic wave absorber layer including the via hole.
  • the via hole may be formed using a laser drill, a CNC drill, or the like, and when the laser drill is used, the hole wall surface of the substrate or the electromagnetic wave absorber may burn or become soot, which may cause a problem in printing a pattern. It is possible to form a hole, preferably using a CNC drill.
  • the double-sided wireless communication tag has a conductive loop in which both ends 291 and 292 are not connected to the outer outer surface of the substrate 240, as shown in the upper figure of FIG. 5.
  • An antenna pattern is formed, and as shown in the lower right of FIG. 5, the conductive pattern is formed by using a conductive paste to connect the two-sided contacts 291 ′′ and 292 ′′ of the loop antenna pattern to the inner surface of the substrate, which is the electromagnetic shielding layer. 5, via holes 291 'and 292' are respectively provided at contact points of both ends of the loop antenna pattern in the substrate and filled with conductive paste to energize each antenna pattern. Can be.
  • the present invention may provide a double-sided wireless communication tag by forming an antenna on each of the electromagnetic wave absorber layers without forming the antenna on the substrate.
  • a loop antenna pattern and a completed part pattern are formed on the front and rear surfaces of the electromagnetic wave absorber layers 300 and 500, and the two-sided wireless communication tags are energized through respective via holes. It can be provided.
  • each radio communication tag layer is included in each electromagnetic wave absorber layer (300, 500), each antenna and IC chip is to use the electromagnetic wave absorber layer instead of the substrate, It is formed on the electromagnetic wave absorber layer (300, 500), and forms a conductive loop antenna pattern on the outer surface of the electromagnetic wave absorber layer (300, 500), the loop on the inner surface of the electromagnetic wave absorber layer (300, 500) side of the electromagnetic wave shielding material layer
  • a conductive pattern is formed by using a conductive paste to connect the both ends of the antenna pattern to each other, and via holes are provided at both ends of the loop antenna patterns of the electromagnetic wave absorber layers 300 and 500 and filled with the conductive paste to conduct electricity.
  • Each antenna pattern may be formed.
  • an electromagnetic wave absorber layer is used instead of a substrate, whereby the wireless communication tag layer absorbs the electromagnetic wave absorber layer.
  • a composite layer is formed. Since the adhesive film layer for laminating the wireless communication tag layer and the electromagnetic wave absorber layer is not required, the process is very simple.
  • a protective sheet layer may be laminated on the top of each wireless communication tag / electromagnetic wave absorber composite layer by an adhesive film, and the bottom of the wireless communication tag / electromagnetic wave absorber composite layer may be formed of a non-conductive adhesive film. It may be laminated with the electromagnetic wave shielding material layer to provide a double-sided wireless communication tag according to another embodiment of the present invention.
  • the surface of the substrate or the electromagnetic wave absorber layer may be subjected to plasma treatment to increase the surface adhesion.
  • the plasma treatment is preferably one of atmospheric pressure plasma or vacuum plasma, but is not limited thereto.
  • the plasma treatment may be subjected to an N 2 atmospheric pressure plasma process of 12 W and 40 mm / s.
  • each of the antennas may further have a copper plating layer formed on the conductive pattern after the conductive pattern is formed by the conductive paste.
  • the pattern implemented through the silver paste may have low resistance due to high resistance, and metal plating may be performed to solve the problem of low efficiency and to improve performance of the antenna of the wireless communication tag. have.
  • FIG 6 illustrates the antenna pattern on which the copper plating layer is formed.
  • the plating layer has a height in the range of 20 to 50 um, for example, about 36 um (about 1 oz).
  • the resistance value of the antenna is determined according to the height of the plating layer. The lower the resistance value of the antenna, the higher the efficiency, and in the present invention, it may be measured as a value between about 0.6 to 0.8 ohm. In this case, if a lower resistance is required, it may have a lower resistance by increasing the copper plating time by increasing the time of electrolytic copper plating.
  • the conductive pattern 250 is formed on the substrate 240 and 640 or the electromagnetic wave absorber layers 300 and 500 by the conductive paste, and thus the copper plating layer 260 is formed.
  • the via hole formed in the middle of the substrate and the like may be filled with conductive paste so that the front surface and the rear surface of the substrate and the like may be energized.
  • the copper plating layer may be formed on the substrate 240 or 640 or the electromagnetic wave absorber layers 300 and 500 by electroplating.
  • the substrates 240 and 640 or the electromagnetic wave absorber layers 300 and 500 may be damaged according to the electroplating process conditions, and it is preferable to coat them with a chemical resistant coating agent for surface protection.
  • the chemically resistant coating agent may use Teflon, it may be formed in a thickness in the range of 5 to 50 um using a slot die coating method.
  • the via hole may be formed before or after the pattern formation of the conductive paste, and the via hole may be formed even after the chemical resistant coating layer is formed.
  • the silver paste when the silver paste is printed on the substrate on which the via hole is formed or the electromagnetic wave absorber layer on which the via hole is formed, the silver paste flows through the via hole, and the paste flowing through the via hole flows to the opposite side to allow both surfaces to be conductive.
  • the above method can solve the problem of disconnection inside the hole generated in the conventional etching method.
  • the surface of the substrate or the electromagnetic wave absorber layer is uneven, there is a problem that the surface is uneven even after the coating of the chemical-resistant coating agent, if the coating surface is uneven may cause a problem that the height of the screen printing pattern is not constant. Therefore, to solve this problem, it is possible to form a pattern by increasing the thickness of the silver paste using a screen mask of a low mesh. If the thickness of the application of the paste is increased, the variation in the height of the printing pattern may be reduced.
  • the present invention includes a first wireless communication tag layer 200 including an IC chip including a first antenna and first information in the double-sided wireless communication tag the first wireless communication tag layer And exchange information with an NFC wireless communication recognizer located at a first place capable of reading or changing the first information included in 200, and a second antenna and a second antenna located opposite the first wireless communication tag layer.
  • the second wireless communication tag layer 200 including the IC chip including the information and the NFC wireless communication reader located in a second place that can read or change the second information included in the second wireless communication tag layer 200
  • a method of using a double-sided wireless communication tag is provided so that information exchange with NFC wireless communication recognizers located at two different places can be performed using a single-sided NFC wireless communication tag.
  • the first wireless communication tag layer 200 is connected to the first terminal to enter and exit the first security place when the company enters, and the first wireless communication tag to access the second security place having a higher security level.
  • the second wireless communication tag layer 600 formed on the opposite side of the layer 200 may be connected to the second terminal to determine whether the first secured place and the second secured place are passed by the security card using the double-sided tag of the present invention. It can be applied to existing technology. In addition, when the two-sided wireless communication tag according to the present invention is applied to transmit and receive two types of frequently and frequently used information, a greater effect can be obtained.
  • the information included in the double-sided wireless communication tag may be information recognizable by a smart phone (portable terminal) having a near field communication unit (NFC) without a separate reader.
  • a smart phone portable terminal
  • NFC near field communication unit
  • each of the wireless communication tag layer of the two-sided wireless communication tag is made to use NFC communication, respectively, and fixed by attaching the double-sided NFC tag on the surface of the transparent plate having a thickness capable of transmitting and receiving NFC
  • the first NFC tag layer 200 including the first antenna and the IC chip including the first information is provided in the surface direction of the transparent plate, and the NFC communication is held by the user located on the surface side of the transparent plate.
  • a user's smartphone (portable terminal) and the first NFC tag layer 200 can read or change the first information from each other, and include a second antenna and second information in the rear direction of the transparent plate.
  • the second NFC tag layer 200 is provided with an IC chip is provided by the user located on the back side of the transparent plate, the user's smartphone capable of NFC communication and the second NFC tag layer 200 Read the second information, or provides, a method using a duplex radio communication tag that is to be changed.
  • the information content of the tag layer on the glass surface side and the tag layer on the opposite side of the glass surface can be different to provide different information to the user with the glass wall surface therebetween.
  • the user can simply send a smartphone with a built-in NFC communication function to the tag so that the information can be sent to the smartphone or the information of the smartphone can be sent to the tag. It has the potential to be widely used because it can give them easy access.
  • the present invention is to form a first antenna on a first substrate and to surface-mount an IC chip connected to the first antenna to manufacture a first wireless communication tag layer 200, a second substrate different from the first substrate Manufacturing a second wireless communication tag layer 600 by forming a second antenna on the surface and surface-mounting an IC chip connected to the second antenna;
  • a non-conductive adhesive layer is formed on the bottom surface of the first wireless communication tag layer 200 and the top surface of the second wireless communication tag layer 600, respectively, and a first electromagnetic wave is formed on the bottom surface of the first wireless communication tag layer 200.
  • the non-conductive adhesive layer may be formed by laminating any one of the non-conductive adhesive film selected from the acrylic double-sided adhesive film, the hot melt type EVA (vinyl acetate) double-sided adhesive film, and the butyl rubber-based spray-type adhesive film, or an acrylic adhesive. It can be formed by spraying a non-conductive adhesive selected from a hot melt type EVA (vinyl acetate resin) adhesive, a butyl rubber adhesive.
  • the method may further include forming a nonconductive adhesive layer on the outer surface of the first wireless communication tag layer and the outer surface of the second wireless communication tag layer, and laminating the first protective sheet layer and the second protective sheet layer, respectively. It may include.
  • the non-conductive adhesive layer may have a thickness in a range of 5 to 100 um, preferably 10 to 60 um, and may be formed using an adhesive film of 3 to 50 N / cm 2 .
  • the acrylic double-sided adhesive film has a total thickness of 50 um with a 20 ⁇ m PET film therebetween and an acrylic adhesive film is formed as an adhesive layer each having a thickness of 15 um, and the adhesive force may be 5 to 20 N / 25mm. .
  • the EVA (vinyl acetate resin) double-sided adhesive film of the hot-melt type the EVA adhesive layer is formed by 20um up and down with a total thickness of 50um PET film therebetween, the adhesive strength may be 5 to 20 N / 25mm.
  • a butyl rubber spray type film can be formed into a nonconductive adhesive film by using the same thickness and physical properties.
  • the non-conductive adhesive may be formed by spraying the adhesive of the physical properties corresponding to the adhesive film used when the non-conductive adhesive film is laminated to form the non-conductive adhesive layer of the present invention.
  • one of the first wireless communication tag layer 200 and the second wireless communication tag layer 600 may be an NFC tag layer, and the other may be the RFID tag layer.
  • the first wireless communication tag layer 200 and the second wireless communication tag layer 600 may each be an NFC tag layer or an RFID tag layer.
  • Each of the wireless communication tag layers 200 and 600 forms a respective antenna, and stores the information, and surface-mounts an IC chip having an integrated circuit for transmitting and receiving with the corresponding terminal. This can be completed.
  • the method of forming an antenna in a double-sided wireless communication tag layer according to the present invention is formed by a printing process of a conductive paste, and the antenna pattern is applied to a thin substrate as if the letters are printed on paper without performing the exposure and etching process, which is a conventional antenna forming method. It is characterized by printing. Therefore, the generation of environmental contaminants generated by the exposure and etching process can be reduced, and also the manufacturing cost can be reduced.
  • the process of forming the respective antennas may include: printing and drying the conductive paste to form a conductive loop antenna pattern in a form in which both ends are not connected by using a conductive paste printing process on a substrate;
  • the insulating printed layer is printed and formed by using an insulating paste on the loop antenna pattern, and dried.
  • the contact positions at both ends of the loop antenna pattern are formed by using a conductive paste and dried to form a conductive pattern and dried to contact the lower conductive loop antenna.
  • the insulating printed layer may be formed by screen printing a UV curable insulating paste, and the method of drying the conductive paste pattern corresponds to a degree appropriately selected and applied by those skilled in the art according to the process conditions used.
  • hot air drying may be used at 80 to 200 degrees, preferably at 100 to 140 degrees for 10 minutes to 3 hours.
  • the present invention comprises the steps of preparing a substrate having a via hole at each of the contact positions of the loop antenna pattern; Printing and drying the conductive paste so as to form a conductive loop antenna pattern of which both ends are not connected to the outer outer surface of each substrate; And printing conductive pastes such that both ends of the loop antenna pattern are connected to each other by forming the completion part pattern 230 by the conductive pattern on the side of the electromagnetic shielding layer, which is an inner surface of each substrate, and the both ends of the loop antenna pattern. And conducting electricity by filling a conductive paste in a via hole formed at a position.
  • the present invention can provide a method of manufacturing a double-sided wireless communication tag by forming an antenna on each of the electromagnetic wave absorber layers without forming the antenna on the substrate.
  • a loop antenna pattern and a completed portion pattern are formed on the front and rear surfaces of the electromagnetic wave absorber layers 300 and 500, and the two-sided wireless communication is conducted through each via hole. It is possible to provide a method for manufacturing a tag.
  • each wireless communication tag layer is included in each of the electromagnetic wave absorber layers 300 and 500, and each antenna and the IC chip are formed on the electromagnetic wave absorber layers 300 and 500 instead of the substrate.
  • the process of forming an antenna of the method comprises the steps of preparing an electromagnetic wave absorber layer having via holes at respective contact positions of the loop antenna pattern; Printing and drying the conductive paste to form an electrically conductive loop antenna pattern of which both ends are not connected to the outer outer surface of each electromagnetic wave absorber layer; And a conductive paste is printed on the side of the electromagnetic wave shielding material layer, which is an inner side of each electromagnetic wave absorber layer, so that the contact portions of both ends of the loop antenna pattern are connected to each other by a conductive pattern, and the conductive paste is applied to via holes formed at the contact points of both ends of the loop antenna pattern. Filling and energizing; can be made, including.
  • first protective sheet layer 200 first wireless communication tag layer
  • first antenna 220 insulated printed layer
  • the present invention not only transmits and receives two or more different pieces of information without interference with the electromagnetic waves of the opposite tags, but also reduces the residual wave interference on the opposite tags by the electromagnetic wave absorber having a high electromagnetic wave absorption rate, and has a high tag read rate.
  • the electromagnetic wave absorber having a high electromagnetic wave absorption rate, and has a high tag read rate.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

La présente invention porte sur une étiquette de communication sans fil double face qui comprend : une première couche d'étiquette de communication sans fil (200) qui présente un premier substrat, une antenne et une puce IC étant formées sur le premier substrat; une seconde couche d'étiquette de communication sans fil (600) qui présente un second substrat, qui est différent du premier substrat, et une seconde antenne et une puce IC formées sur le second substrat; une couche de matériau de blindage électromagnétique (400) qui est fabriquée en métal et qui est disposée entre la première couche d'étiquette de communication sans fil (200) et la seconde couche d'étiquette de communication sans fil (600). Selon l'étiquette de communication sans fil double face, son procédé de fabrication et son procédé d'utilisation selon la présente invention, la première couche d'étiquette de communication sans fil et la seconde couche d'étiquette de communication sans fil sont une couche d'étiquette NFC qui peut communiquer dans une plage de 13,56 MHz.
PCT/KR2013/007046 2012-08-07 2013-08-05 Étiquette de communication sans fil double face et son procédé de fabrication WO2014025177A1 (fr)

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KR1020120086029A KR101253147B1 (ko) 2012-08-07 2012-08-07 양면 무선통신 태그 및 이의 제조 방법
KR10-2012-0086029 2012-08-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4327347A4 (fr) * 2021-04-19 2024-10-09 Jabil Inc Bobine imprimée et accord d'antenne

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101508765B1 (ko) * 2013-10-07 2015-04-07 이상호 알에프아이디 태그
KR101498636B1 (ko) * 2013-10-22 2015-03-04 김시원 스마트 패드
KR101586566B1 (ko) * 2014-05-20 2016-02-02 임원일 Nfc 모듈 및 nfc 모듈이 부착된 휴대 단말기
KR101695439B1 (ko) 2016-09-23 2017-01-12 주식회사 지오티스 안테나 패턴시트를 이용한 안테나 형성방법
KR102275151B1 (ko) * 2019-06-04 2021-07-09 (주)바이오스마트 전자파 흡수 시트를 구비한 비접촉식 금속 카드
CN110889481A (zh) * 2019-10-22 2020-03-17 北京握奇智能科技有限公司 一种分离双天线智能卡片及其制作方法
RU199708U1 (ru) * 2019-10-30 2020-09-15 Юрий Вадимович Тырыкин Устройство с функцией бесконтактного считывания информации в виде наклейки

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004213582A (ja) * 2003-01-09 2004-07-29 Mitsubishi Materials Corp Ｒｆｉｄタグ及びリーダ／ライタ並びに該タグを備えたｒｆｉｄシステム
KR20100056159A (ko) * 2008-11-19 2010-05-27 삼성전자주식회사 복수의 전자 인식 방식이 적용된 전자 인식 장치
KR101163574B1 (ko) * 2012-03-13 2012-07-06 주식회사 나노맥 무선인식 및 무선충전 겸용 전자파흡수체와 이를 포함하는 무선인식 및 무선충전 겸용 무선안테나, 그것의 제조방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004213582A (ja) * 2003-01-09 2004-07-29 Mitsubishi Materials Corp Ｒｆｉｄタグ及びリーダ／ライタ並びに該タグを備えたｒｆｉｄシステム
KR20100056159A (ko) * 2008-11-19 2010-05-27 삼성전자주식회사 복수의 전자 인식 방식이 적용된 전자 인식 장치
KR101163574B1 (ko) * 2012-03-13 2012-07-06 주식회사 나노맥 무선인식 및 무선충전 겸용 전자파흡수체와 이를 포함하는 무선인식 및 무선충전 겸용 무선안테나, 그것의 제조방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4327347A4 (fr) * 2021-04-19 2024-10-09 Jabil Inc Bobine imprimée et accord d'antenne

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