CN116736594A - Bistable NFC driven electrochromic tag and anti-counterfeiting method and system thereof - Google Patents
Bistable NFC driven electrochromic tag and anti-counterfeiting method and system thereof Download PDFInfo
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- CN116736594A CN116736594A CN202310523873.XA CN202310523873A CN116736594A CN 116736594 A CN116736594 A CN 116736594A CN 202310523873 A CN202310523873 A CN 202310523873A CN 116736594 A CN116736594 A CN 116736594A
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- 238000000034 method Methods 0.000 title claims abstract description 22
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- 239000003990 capacitor Substances 0.000 claims description 40
- 238000012795 verification Methods 0.000 claims description 23
- 239000003792 electrolyte Substances 0.000 claims description 10
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- 239000000463 material Substances 0.000 claims description 5
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- 239000011248 coating agent Substances 0.000 claims description 3
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- 238000007650 screen-printing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
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- 238000007641 inkjet printing Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 13
- 230000002441 reversible effect Effects 0.000 abstract description 10
- 150000002500 ions Chemical class 0.000 description 7
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
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Abstract
The application discloses a bistable NFC driven electrochromic tag, an anti-counterfeiting method and a system thereof, wherein the electrochromic tag comprises an electrochromic device and a driving device, the electrochromic device comprises an electrochromic layer and an ion storage layer which are sequentially arranged, and the electrochromic device is provided with a first electrode pin electrically connected with the electrochromic layer and a second electrode pin electrically connected with the ion storage layer; the driving device comprises a substrate for NFC induction, a first coil arranged on the front surface of the substrate and a second coil arranged on the back surface of the substrate; one of the first electrode pin and the second electrode pin is connected with the positive electrode of the first coil and the negative electrode of the second coil, and the other one of the first electrode pin and the second electrode pin is connected with the positive electrode of the second coil and the negative electrode of the first coil; the positive pole or the negative pole of the first coil is provided with a resistor, and the positive pole or the negative pole of the second coil is provided with a switch. The electrochromic label provided by the application can quickly realize reversible color change and is suitable for small-size labels.
Description
Technical Field
The application relates to the technical field of electrochromic, in particular to a bistable NFC driven electrochromic label, and an anti-counterfeiting method and an anti-counterfeiting system thereof.
Background
Electrochromic refers to a phenomenon in which the optical properties (transmittance, reflectance, etc.) of a material change reversibly under the drive of an applied voltage. From the appearance, the electrochromic layer usually shows reversible changes in color or transparency, which can be applied to the fields of display labels, label anti-counterfeiting, dimming glass and the like.
Because electrochromic devices require lower voltages to drive, additional power supplies are required to connect the device. However, for the display tag, there is a very serious disadvantage in terms of convenience in connecting the power supply. At present, along with popularization of NFC functions of mobile phones, the scheme of adopting NFC to realize power supply to electrochromic devices can completely avoid the problem that power supply is limited by service life of a storage battery.
Thus, some prior art techniques propose schemes for powering electrochromic devices using NFC. For example, atangan source electronics limited developed anti-counterfeit markers based on single coil driven NFC. However, for electrochromic devices with bistable states, the solution uses a single NFC coil for power supply, which triggers only one color change, for example a red to blue color change, and does not allow good reversible color change. For another example, a dual-coil-drive-based NFC display tag was developed for a sea letter video, and although reversible color change can be achieved, the area requirement of the driving circuit for the two coils is large in the technical scheme, so that the whole tag is large, and the dual-coil-drive-based NFC display tag is not suitable for manufacturing small-area electrochromic tags.
The above disclosure of background art is only for aiding in understanding the inventive concept and technical solution of the present application, and it does not necessarily belong to the prior art of the present patent application, nor does it necessarily give technical teaching; the above background should not be used to assess the novelty and creativity of the present application in the event that no clear evidence indicates that such is already disclosed prior to the filing date of the present patent application.
Disclosure of Invention
The application aims to provide a bistable NFC driven electrochromic label, an anti-counterfeiting method and a system thereof, which can realize reversible color change rapidly by controlling output voltage to carry out reversible switching of positive pressure and negative pressure through a double-coil assembly with smaller area, and are suitable for preparing small-area electrochromic labels.
In order to achieve the above purpose, the application adopts the following technical scheme:
a bistable NFC-driven electrochromic tag comprising:
an electrochromic device comprising an electrochromic layer and an ion storage layer arranged in sequence, the electrochromic device being configured with a first electrode pin electrically connected to the electrochromic layer and a second electrode pin electrically connected to the ion storage layer;
the driving device comprises a substrate, a first coil arranged on the front surface of the substrate and a second coil arranged on the back surface of the substrate, wherein the substrate is used for NFC induction;
one of the first electrode pin and the second electrode pin is connected with the positive electrode of the first coil and the negative electrode of the second coil at the same time, and the other of the first electrode pin and the second electrode pin is connected with the positive electrode of the second coil and the negative electrode of the first coil at the same time;
the positive electrode or the negative electrode of the first coil is provided with a resistor, and the positive electrode or the negative electrode of the second coil is provided with a switch.
Further, in combination with any one or more of the preceding aspects, the electrochromic device further includes a first substrate layer, a first transparent conductive layer, an electrolyte layer, a second transparent conductive layer, and a second substrate layer, where the first substrate layer, the first transparent conductive layer, the electrochromic layer, the electrolyte layer, the ion storage layer, the second transparent conductive layer, and the second substrate layer are sequentially disposed;
the first electrode pin is arranged on the first transparent conducting layer, and the second electrode pin is arranged on the second transparent conducting layer;
the electrochromic layer is prepared by adopting a spray coating, ink-jet or slit coating mode.
Further, the combination of any one or more of the foregoing technical solutions, further includes an electrode integrated portion corresponding to the first coil and the second coil one to one, where the electrode integrated portion is configured with a chip, a triode, and a capacitor;
the chip is configured with a read-write function and an NFC communication function.
Further, in any one or a combination of the foregoing aspects, the capacitor includes a first capacitor and a second capacitor, and the chip of each electrode integrated portion is connected to the corresponding first coil or second coil through the first capacitor;
the first polar plate of the second capacitor is electrically connected with the chip and the triode at the same time, and the second polar plate of the second capacitor is configured to be electrically connected with the first electrode pin or the second electrode pin.
Further, in any one or a combination of the foregoing aspects, a chip of the electrode integrated portion corresponding to the first coil is connected to an inner end of the first coil through a first capacitor, and an outer end of the first coil is directly connected to the chip;
the second polar plate of the second capacitor is connected with one end of the resistor, and the other end of the resistor is used as the negative electrode of the first coil;
the first polar plate of the second capacitor is connected with the emitting electrode of the triode, and the collecting electrode of the triode is used as the positive electrode of the first coil.
Further, in any one or a combination of the foregoing aspects, a chip of the electrode integrated portion corresponding to the second coil is connected to an inner end of the second coil through a first capacitor, and an outer end of the second coil is directly connected to the chip;
the second polar plate of the second capacitor is connected with one end of the switch, and the other end of the switch is used as the negative electrode of the second coil;
the first polar plate of the second capacitor is connected with the emitting electrode of the triode, and the collecting electrode of the triode is used as the positive electrode of the second coil.
Further, any one or a combination of the above-mentioned technical solutions, where the chip, the triode and/or the capacitor is a patch device structure;
alternatively, the chips of the different electrode integrated parts are configured to the same or different voltages, and the first coil and the second coil are configured to output the same or different voltages.
Further, the substrate of any one or a combination of the foregoing aspects, wherein the substrate is a polymer substrate, and the substrate of the substrate comprises at least one of PET, PI, glass, and paper, and is configured to enable the first coil and the second coil to simultaneously sense NFC drive;
or the first coil and the second coil are connected through the electrode in a via hole conductive mode;
or the first coil and the second coil are respectively prepared on the front and back surfaces of the base material by adopting screen printing, aluminum etching, electroplating, PCB or FPC technology;
or the switch is a dome switch, a touch switch or a dial switch.
Further, according to any one or a combination of the foregoing technical solutions, the number of the first electrode pins and the number of the second electrode pins are two, wherein one of the first electrode pins is connected with the positive electrode of the first coil, and the other first electrode pin is connected with the negative electrode of the second coil; one second electrode pin is connected with the negative electrode of the first coil, and the other second electrode pin is connected with the positive electrode of the second coil;
or the number of the first electrode pins and the number of the second electrode pins are two, wherein one first electrode pin is connected with the positive electrode of the second coil, and the other first electrode pin is connected with the negative electrode of the first coil; one of the second electrode pins is connected with the positive electrode of the first coil, and the other second electrode pin is connected with the negative electrode of the second coil.
Further, according to any one or a combination of the foregoing aspects, the number of the first electrode pins and the number of the second electrode pins are one, wherein the first electrode pins are connected with the positive electrode of the first coil, and the second electrode pins are connected with the negative electrode of the second coil;
or the first electrode pin is connected with the positive electrode of the second coil, and the second electrode pin is connected with the negative electrode of the first coil.
According to another aspect of the present application, there is provided an anti-counterfeit method of a bistable NFC-driven electrochromic tag according to any one or a combination of the above-mentioned aspects, comprising the steps of:
generating an anti-counterfeiting information code in advance, and writing the anti-counterfeiting information code into a chip of the electrochromic tag;
starting the NFC function of the NFC terminal, and placing the NFC terminal in the induction range of the electrochromic tag;
pressing a switch of the electrochromic label to observe whether the electrochromic label changes color; the NFC terminal reads the anti-counterfeiting information code stored in the chip of the electrochromic tag in an NFC communication mode;
if the electrochromic label changes color before and after the switch is turned on and the read anti-counterfeiting information code passes anti-counterfeiting verification, the anti-counterfeiting object is determined to be true, otherwise, the anti-counterfeiting object is determined to be false.
Further, any one or a combination of the foregoing technical solutions, the anti-counterfeit verification is performed on the information code by using a preset verification website or verification application, where the verification website or verification application is integrated in the NFC terminal or is independent of other device terminals outside the NFC terminal.
According to another aspect of the present application, there is provided an anti-counterfeiting system comprising a bistable NFC-driven electrochromic tag according to any one or a combination of the above-described aspects, the system further comprising:
the anti-counterfeiting information code generation module is configured to generate an anti-counterfeiting information code and write the anti-counterfeiting information code into a chip of the electrochromic tag;
a verification module configured to verify the information code against forgery;
the electrochromic tag is configured to interact with an NFC terminal, comprising: starting the NFC function of the NFC terminal, and placing the NFC terminal in the induction range of the electrochromic tag; and the NFC terminal reads the anti-counterfeiting information code stored in the chip of the electrochromic tag in an NFC communication mode.
The technical scheme provided by the application has the following beneficial effects:
a. according to the application, the NFC induction base material and the double coils are adopted, and the NFC function of the mobile phone is utilized to supply power to the electrochromic device, so that the problem that the electrochromic tag is limited by the service life or the electric quantity of the storage battery in the use process can be solved, and the adopted electrochromic device has bistable characteristic, and can be maintained for a long time after being discolored;
b. according to the electrochromic tag provided by the application, the output end of one coil is connected with the resistor in series, the output end of the other coil is connected with the switch in series, and the positive electrode and the negative electrode of the electrochromic device are rapidly switched by closing or opening the switch, so that the electrochromic tag can be rapidly colored or discolored, and the coloring or the discoloring of the electrochromic tag is realized under the drive of positive voltage or negative voltage, so that the service life of the electrochromic tag can be prolonged;
c. according to the electrochromic tag provided by the application, the first coil and the second coil are respectively arranged on the front side and the back side of the substrate, so that the two coils occupy only the area of one coil, the size of the electrochromic tag can be further controlled by adopting the electrode integrated part, and the preparation requirement of a small-size tag can be met;
d. the electrochromic tag provided by the application can adopt a chip with a lower end as a chip of the electrode integrated part, and has low cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
Fig. 1 is a schematic structural view of an electrochromic label according to an exemplary embodiment of the present application;
FIG. 2 is a schematic circuit diagram of an electrochromic label provided in one exemplary embodiment of the present application;
fig. 3 is a schematic structural view of an electrochromic device according to an exemplary embodiment of the present application;
fig. 4 is a schematic structural view of an electrode integrated part according to an exemplary embodiment of the present application;
fig. 5 is a schematic structural view of a connection between a first coil and an electrode integrated portion according to an exemplary embodiment of the present application;
fig. 6 is a schematic structural diagram of connection between a second coil and an electrode integrated portion according to an exemplary embodiment of the present application.
Wherein, the reference numerals include: 100-electrochromic device, 110-electrochromic layer, 120-ion storage layer, 130-first substrate layer, 140-first transparent conductive layer, 150-electrolyte layer, 160-second transparent conductive layer, 170-second substrate layer, 181-first electrode pin, 182-second electrode pin, 200-driving device, 201-first coil, 202-second coil, 203-substrate, 210-resistor, 220-switch, 300-electrode integration, 302-chip, 304-triode, 306-first capacitor, 308-second capacitor.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
In one embodiment of the present application, referring to fig. 1 and 2, a bistable NFC-driven electrochromic tag is provided, comprising an electrochromic device 100, a driving device 200, and an electrode assembly 300. The electrochromic device 100 is a bistable device, and the maintenance time after the electrochromic is longer, which can be more than one hour, and is enough for a user to check the anti-counterfeiting information. Bistable, in the present application, refers to the ability of an electrochromic device to maintain the color of the device after color change. For example, an electrochromic device in the initial state is red, after being colored blue, and the ability to maintain the blue state is bistable. Some electrochromic devices change from red to blue and back to red after the voltage is removed.
In this embodiment, referring to fig. 3, the electrochromic device 100 includes a first substrate layer 130, a first transparent conductive layer 140, an electrochromic layer 110, an electrolyte layer 150, an ion storage layer 120, a second transparent conductive layer 160, and a second substrate layer 170, which are sequentially disposed. The electrochromic device 100 is configured with a first electrode lead 181 electrically connected to the electrochromic layer 110 and a second electrode lead 182 electrically connected to the ion storage layer 120. The first electrode pin 181 is disposed on the first transparent conductive layer 140, and the second electrode pin 182 is disposed on the second transparent conductive layer 160; the electrochromic layer 110 is prepared by spraying, ink-jetting or slot coating.
The electrochromic device 100 is similar to a capacitive device, when a voltage on one side is positive, for example, the first electrode pin 181 is connected to the positive voltage, so that anions in the electrolyte layer 150 may enter the positive film layer, i.e., the electrochromic layer 110, to change the color of the device. When the first electrode pin 181 is changed from the positive electrode of the connection voltage to the negative electrode of the connection power, the anions in the electrochromic layer 110 are released from the film layer and are embedded back into the electrolyte layer 150, so that the electrochromic device is restored to the original color.
After the electrochromic device is discolored, if ions do not have the effect of a reverse electric field in an electrolyte, a large amount of ions gradually accumulate on one side of an electrode, thereby resulting in a decrease in the lifetime of the electrochromic device. If no reverse voltage is applied, the two electrodes are short-circuited, the original color can be recovered, but the electrolyte and anions in the film layer are not completely separated, so that charges remain in the film layer, and the device cannot normally change color due to slow development. And the color-changing speed of the short circuit is reduced. The electrochromic tag provided by the application realizes the rapid switching of the positive electrode and the negative electrode of the electrochromic device through the two NFC coils, so that the electrochromic tag can be rapidly colored and faded and has good service life, and a specific implementation mode is described in detail below.
In this embodiment, referring to fig. 1 and fig. 2, the driving device 200 is configured to drive the electrochromic device 100 to change color and change color inversely, and includes a substrate 203, a first coil 201 disposed on the front side of the substrate 203, and a second coil 202 disposed on the back side of the substrate 203, where an anode or a cathode of the first coil 201 is provided with a resistor 210, and a resistance value of the resistor 210 ranges from 0 to 20mΩ, and a selection principle is that the resistor is required to match with a device working voltage and a device working current, and in one embodiment of the present application, a resistance value of the resistor 210 is 1000kΩ; a switch 220 is disposed on the positive electrode or the negative electrode of the second coil 202, and the switch 220 is a dome switch, a touch switch or a dial switch. The substrate 203 is a substrate for NFC induction configured to enable the first coil 201 and the second coil 202 to simultaneously induce NFC drive. The substrate 203 may be a polymer substrate, and the substrate 203 may include at least one of PET, PI, glass, and paper. The first coil 201 and the second coil 202 may be circular, square, etc. patterns that can be induced by a mobile phone, and may be prepared on the front and back surfaces of the substrate 203 by screen printing, aluminum etching, electroplating, PCB or FPC processes, respectively. Preferably, the first coil 201 and the second coil 202 are connected to each other by means of via holes. By arranging the first coil 201 and the second coil 202 on the front and back sides of the substrate 203 respectively, the two coils occupy only one coil area, so as to meet the preparation requirement of the small-size tag. Fig. 2 shows a developed circuit diagram, that is, in order to more clearly see the circuit structure, two coils (a first coil 201 and a second coil 202) integrated on the front and back sides of a substrate 203 are disposed on the same plane for illustration, and do not represent the actual placement positions thereof.
Referring to fig. 4, the electrode integrated part 300 is in one-to-one correspondence with the first and second coils 201 and 202, and the electrode integrated part 300 is configured with a chip 302, a transistor 304, and a capacitor including a first capacitor 306 and a second capacitor 308. The chip 302 is configured with a read-write function and an NFC communication function. The use of the electrode integrated part 300 can further control the size of the electrochromic label, satisfying the manufacturing requirements of the small-sized label. Preferably, the chip 302, transistor 304 and/or capacitor are chip device structures.
In this embodiment, the number of the first electrode pins 181 and the second electrode pins 182 is one. Referring to fig. 1, the first electrode pin 181 is connected to the positive electrode of the first coil 201, and the second electrode pin 182 is connected to the negative electrode of the second coil 202.
Referring to fig. 1 and 5, a chip 302 of an electrode integrated part 300 corresponding to the first coil 201 is connected to an inner terminal of the first coil 201 through a first capacitor 306, and an outer terminal of the first coil 201 is directly connected to the chip 302. The first electrode plate of the second capacitor 308 is connected with the chip 302 and the emitter of the triode 304 at the same time, and the collector of the triode 304 is used as the positive electrode of the first coil 201 and is connected with the first electrode pin 181; the second electrode plate of the second capacitor 308 is connected to one end of the resistor 210, and the other end of the resistor 210 serves as the negative electrode of the first coil 201 and is connected to the second electrode pin 182 and the negative electrode of the second coil 202.
Referring to fig. 1 and 6, the chip 302 of the electrode integrated part 300 corresponding to the second coil 202 is connected to the inner terminal of the second coil 202 through the first capacitor 306, and the outer terminal of the second coil 202 is directly connected to the chip 302. The first electrode plate of the second capacitor 308 is connected to the chip 302 and the emitter of the triode 304 at the same time, and the collector of the triode 304 serves as the positive electrode of the second coil 202 and is connected to the second electrode pin 182; the second plate of the second capacitor 308 is connected to one end of the switch 220, and the other end of the switch 220 is used as the negative electrode of the second coil 202 and is connected to the first electrode pin 181.
In the present embodiment, the chips 302 of the different electrode integrated sections 300 are configured to the same voltage, and the first coil 201 and the second coil 202 are configured to output the same voltage. Alternatively, the chips 302 of the different electrode integrated parts 300 are configured to different voltages, the first coil 201 and the second coil 202 are configured to output different voltages, and the voltage output by the second coil 202 is not less than the voltage output by the first coil 201.
When the NFC function of the mobile phone is turned on, if the switch 220 is not pressed, that is, the switch 220 connected to the second coil 202 is in an off state, the first coil 201 senses and outputs a voltage, for example, the output voltage is 2V, the first electrode pin 181 is a voltage positive electrode, and the electrochromic device 100 is in a fade state; if the switch 220 is pressed, that is, the switch 220 connected to the second coil 202 is in a closed state, since the first coil 201 is connected in series with the resistor 210, the voltage output by the first coil 201 is lower than the voltage output by the second coil 202, so that the electrode reverse switching of the first electrode pin 181 and the second electrode pin 182 is realized, that is, the first electrode pin 181 is a voltage negative electrode, and the corresponding output voltage is-2V, thereby achieving the purpose of reversely driving the electrochromic label, and the electrochromic device 100 is in a colored state at this time. According to the application, the NFC induction base material and the double coils are adopted to supply power to the electrochromic device and switch the positive electrode and the negative electrode, so that the electrochromic tag is prevented from being limited by the service life or the electric quantity of the storage battery, the electrochromic device can be quickly driven to be colored or discolored, the coloring or the discoloring is realized under the drive of forward voltage or reverse voltage, and the service life of the electrochromic tag can be prolonged.
In another embodiment of the present application, the first electrode pin 181 is connected to the positive electrode of the first coil 201, and the second electrode pin 182 is connected to the negative electrode of the second coil 202, unlike the above embodiment. In this embodiment, the first electrode pin 181 is connected to the positive electrode of the second coil 202, and the second electrode pin 182 is connected to the negative electrode of the first coil 201. When the NFC function of the mobile phone is turned on, if the switch 220 is in an off state, the first electrode pin 181, that is, the electrochromic layer, is connected to the negative electrode, and the electrochromic device 100 is in a colored state; if the switch 220 is in a closed state, the first electrode pin 181, i.e., the electrochromic layer, is connected to the positive electrode, and the electrochromic device 100 is in a discolored state.
In another embodiment of the present application, the number of the first electrode pins 181 and the second electrode pins 182 is one, which is different from the above embodiment. In this embodiment, the number of the first electrode pins 181 and the second electrode pins 182 is two, wherein one first electrode pin 181 is connected to the positive electrode of the first coil 201, and the other first electrode pin 181 is connected to the negative electrode of the second coil 202; one of the second electrode pins 182 is connected to the negative electrode of the first coil 201, and the other second electrode pin 182 is connected to the positive electrode of the second coil 202. When the NFC function of the mobile phone is turned on, if the switch 220 is in an off state, the first electrode pin 181, that is, the electrochromic layer is connected to the positive electrode, and the electrochromic device 100 is in a fade state; if the switch 220 is in a closed state, the first electrode pin 181, i.e. the electrochromic layer, is connected to the negative electrode, and the electrochromic device 100 is in a colored state.
Alternatively, the number of the first electrode pins 181 and the second electrode pins 182 is two, wherein one first electrode pin 181 is connected with the positive electrode of the second coil 202, and the other first electrode pin 181 is connected with the negative electrode of the first coil 201; one of the second electrode pins 182 is connected to the positive electrode of the first coil 201, and the other second electrode pin 182 is connected to the negative electrode of the second coil 202. When the NFC function of the mobile phone is turned on, if the switch 220 is in an off state, the first electrode pin 181, that is, the electrochromic layer is connected to the negative electrode, and the electrochromic device 100 is in a colored state; if the switch 220 is in a closed state, the first electrode pin 181, i.e., the electrochromic layer, is connected to the positive electrode, and the electrochromic device 100 is in a discolored state.
In another embodiment of the present application, there is provided an anti-counterfeiting method for a bistable NFC-driven electrochromic tag based on any of the above embodiments, for anti-counterfeiting verification of an information code using a preset verification website or verification application, the verification website or verification application being integrated in the NFC terminal or independent of other device terminals external to the NFC terminal, the anti-counterfeiting method including the steps of:
generating an anti-counterfeiting information code in advance, and writing the anti-counterfeiting information code into a chip of the electrochromic tag;
starting the NFC function of the NFC terminal, and placing the NFC terminal in the induction range of the electrochromic tag;
pressing a switch of the electrochromic label to observe whether the electrochromic label changes color; the NFC terminal reads the anti-counterfeiting information code stored in the chip of the electrochromic tag in an NFC communication mode;
if the electrochromic label changes color before and after the switch is turned on and the read anti-counterfeiting information code passes anti-counterfeiting verification, the anti-counterfeiting object is determined to be true, otherwise, the anti-counterfeiting object is determined to be false.
In another embodiment of the present application, there is provided an anti-counterfeiting system comprising the bistable NFC-driven electrochromic tag of any of the embodiments above, the system further comprising an anti-counterfeiting information code generation module and a verification module. Wherein the anti-counterfeiting information code generation module is configured to generate an anti-counterfeiting information code and write the anti-counterfeiting information code into the chip of the electrochromic label. The verification module is configured to perform anti-counterfeiting verification on the information code. The electrochromic tag is configured to interact with an NFC terminal, comprising: starting the NFC function of the NFC terminal, and placing the NFC terminal in the induction range of the electrochromic tag; and the NFC terminal reads the anti-counterfeiting information code stored in the chip of the electrochromic tag in an NFC communication mode.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely illustrative of the embodiments of this application and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the application, and it is intended to cover all modifications and variations as fall within the scope of the application.
Claims (10)
1. A bistable NFC-driven electrochromic tag comprising:
an electrochromic device (100) comprising an electrochromic layer (110) and an ion storage layer (120) arranged in sequence, the electrochromic device (100) being configured with a first electrode pin (181) electrically connected to the electrochromic layer (110) and a second electrode pin (182) electrically connected to the ion storage layer (120);
a driving device (200) comprising a substrate (203), a first coil (201) arranged on the front side of the substrate (203) and a second coil (202) arranged on the back side of the substrate (203), wherein the substrate (203) is a substrate for NFC induction;
wherein one of the first electrode pin (181) and the second electrode pin (182) is simultaneously connected with the positive electrode of the first coil (201) and the negative electrode of the second coil (202), and the other of the first electrode pin (181) and the second electrode pin (182) is simultaneously connected with the positive electrode of the second coil (202) and the negative electrode of the first coil (201);
a resistor (210) is arranged on the positive electrode or the negative electrode of the first coil (201), and a switch (220) is arranged on the positive electrode or the negative electrode of the second coil (202).
2. The bistable NFC-driven electrochromic tag of claim 1, wherein said electrochromic device (100) further comprises a first substrate layer (130), a first transparent conductive layer (140), an electrolyte layer (150), a second transparent conductive layer (160) and a second substrate layer (170), said first substrate layer (130), first transparent conductive layer (140), electrochromic layer (110), electrolyte layer (150), ion storage layer (120), second transparent conductive layer (160) and second substrate layer (170) being disposed in sequence;
the first electrode pin (181) is arranged on the first transparent conductive layer (140), and the second electrode pin (182) is arranged on the second transparent conductive layer (160);
the electrochromic layer (110) is prepared by spraying, ink-jetting or slot coating.
3. The bistable NFC-driven electrochromic tag according to claim 1, further comprising an electrode integration (300) in one-to-one correspondence with the first coil (201) and the second coil (202), the electrode integration (300) being configured with a chip (302), a transistor (304) and a capacitor;
the chip (302) is configured with a read-write function and an NFC communication function;
the capacitor comprises a first capacitor (306) and a second capacitor (308), and the chip (302) of each electrode integrated part (300) is connected with the corresponding first coil (201) or second coil (202) through the first capacitor (306);
the first polar plate of the second capacitor (308) is electrically connected with the chip (302) and the triode (304) at the same time, and the second polar plate of the second capacitor (308) is configured to be electrically connected with the first electrode pin (181) or the second electrode pin (182).
4. A bistable NFC-driven electrochromic tag according to claim 3, characterized in that the chip (302) of the electrode integration (300) corresponding to the first coil (201) is connected to the inner end of the first coil (201) by a first capacitor (306), the outer end of the first coil (201) being directly connected to the chip (302);
a second polar plate of the second capacitor (308) is connected with one end of the resistor (210), and the other end of the resistor (210) is used as a negative electrode of the first coil (201);
the first polar plate of the second capacitor (308) is connected with the emitter of the triode (304), and the collector of the triode (304) is used as the positive electrode of the first coil (201);
a chip (302) of an electrode integrated part (300) corresponding to the second coil (202) is connected with an inner end of the second coil (202) through a first capacitor (306), and an outer end of the second coil (202) is directly connected with the chip (302);
a second polar plate of the second capacitor (308) is connected with one end of the switch (220), and the other end of the switch (220) is used as a negative electrode of the second coil (202);
the first polar plate of the second capacitor (308) is connected with the emitter of the triode (304), and the collector of the triode (304) is used as the positive electrode of the second coil (202).
5. Bistable NFC-driven electrochromic tag according to claim 3 or 4, characterized in that the chip (302), transistor (304) and/or capacitor are patch device structures;
alternatively, the chips (302) of the different electrode integrated sections (300) are configured to the same or different voltages, and the first coil (201) and the second coil (202) are configured to output the same or different voltages.
6. The bistable NFC-driven electrochromic tag according to claim 1, characterized in that said substrate (203) is a polymeric substrate, the substrate of said substrate (203) comprising at least one of PET, PI, glass, paper, said substrate (203) being configured to enable said first coil (201) and second coil (202) to simultaneously sense NFC-driving;
or the first coil (201) and the second coil (202) are connected through the electrode in a via hole conductive mode;
or the first coil (201) and the second coil (202) are respectively prepared on the front and back surfaces of the base material (203) by adopting screen printing, aluminum etching, electroplating, PCB or FPC technology;
or, the switch (220) is a dome switch, a touch switch or a dial switch;
or, the number of the first electrode pins (181) and the number of the second electrode pins (182) are one, wherein the first electrode pins (181) are connected with the positive electrode of the first coil (201), and the second electrode pins (182) are connected with the negative electrode of the second coil (202);
alternatively, the first electrode pin (181) is connected to the positive electrode of the second coil (202), and the second electrode pin (182) is connected to the negative electrode of the first coil (201).
7. Bistable NFC-driven electrochromic tag according to claim 1, characterized in that the number of first (181) and second (182) electrode pins is two, one (181) being connected to the positive pole of the first coil (201) and the other (181) being connected to the negative pole of the second coil (202); one second electrode pin (182) is connected with the negative electrode of the first coil (201), and the other second electrode pin (182) is connected with the positive electrode of the second coil (202);
or, the number of the first electrode pins (181) and the number of the second electrode pins (182) are two, wherein one first electrode pin (181) is connected with the positive electrode of the second coil (202), and the other first electrode pin (181) is connected with the negative electrode of the first coil (201); one second electrode pin (182) is connected with the positive electrode of the first coil (201), and the other second electrode pin (182) is connected with the negative electrode of the second coil (202).
8. A method of anti-counterfeiting based on a bistable NFC-driven electrochromic label according to any one of claims 3 to 5, characterized in that it comprises the steps of:
generating an anti-counterfeiting information code in advance, and writing the anti-counterfeiting information code into a chip of the electrochromic tag;
starting the NFC function of the NFC terminal, and placing the NFC terminal in the induction range of the electrochromic tag;
pressing a switch of the electrochromic label to observe whether the electrochromic label changes color; the NFC terminal reads the anti-counterfeiting information code stored in the chip of the electrochromic tag in an NFC communication mode;
if the electrochromic label changes color before and after the switch is turned on and the read anti-counterfeiting information code passes anti-counterfeiting verification, the anti-counterfeiting object is determined to be true, otherwise, the anti-counterfeiting object is determined to be false.
9. The anti-counterfeiting method according to claim 8, wherein the information code is subjected to anti-counterfeiting verification by using a preset verification website or verification application program, wherein the verification website or verification application program is integrated in the NFC terminal or independent of other equipment terminals outside the NFC terminal.
10. A tamper-proof system comprising the bistable NFC-driven electrochromic tag of any one of claims 3-5, the system further comprising:
the anti-counterfeiting information code generation module is configured to generate an anti-counterfeiting information code and write the anti-counterfeiting information code into a chip of the electrochromic tag;
a verification module configured to verify the information code against forgery;
the electrochromic tag is configured to interact with an NFC terminal, comprising: starting the NFC function of the NFC terminal, and placing the NFC terminal in the induction range of the electrochromic tag; and the NFC terminal reads the anti-counterfeiting information code stored in the chip of the electrochromic tag in an NFC communication mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310523873.XA CN116736594A (en) | 2023-05-11 | 2023-05-11 | Bistable NFC driven electrochromic tag and anti-counterfeiting method and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310523873.XA CN116736594A (en) | 2023-05-11 | 2023-05-11 | Bistable NFC driven electrochromic tag and anti-counterfeiting method and system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116736594A true CN116736594A (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310523873.XA Pending CN116736594A (en) | 2023-05-11 | 2023-05-11 | Bistable NFC driven electrochromic tag and anti-counterfeiting method and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116736594A (en) |
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2023
- 2023-05-11 CN CN202310523873.XA patent/CN116736594A/en active Pending
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