Anti-fake label film light-curing forming device and method based on surface acoustic wave manipulation

Abstract

This invention discloses an apparatus and method for photocuring anti-counterfeiting label films based on surface acoustic wave (SAW) manipulation. Interdigitated electrodes and a forming frame are placed on the upper surface of a piezoelectric substrate. The hollow portion in the middle of the forming frame serves as a forming chamber for placing photosensitive resin and particles. The particles are dispersed within the photosensitive resin. An ultraviolet (UV) light source is located below the piezoelectric substrate. The method includes inputting an external electrical signal into the interdigitated electrodes, which causes SAW waves to be generated in the piezoelectric substrate. The SAW waves drive the particles to converge at the troughs of the SAW waves. UV light emitted from the UV light source is projected onto the photosensitive resin, causing the photosensitive resin at the UV light projection location to solidify. The solidified photosensitive resin is then removed from the forming chamber as the anti-counterfeiting label film. This invention enables the manufacture of anti-counterfeiting label films with different particle patterning features and shapes, and features physical non-cloning, ease of operation, simple equipment, and strong encryption.

Description

Technical Field

[0001] This invention relates to an anti-counterfeiting label film forming apparatus and method in the field of anti-counterfeiting, and particularly to an anti-counterfeiting label film photocuring forming apparatus and method based on surface acoustic wave manipulation. Background Technology

[0002] Counterfeiting is a global problem that causes significant economic losses and poses a security threat to individuals, companies, and society as a whole. Over the past few decades, counterfeit products have expanded from everyday consumer goods to pharmaceuticals and high-tech products. Despite most products being protected by anti-counterfeiting technologies, the economic losses from global counterfeiting continue to increase annually. This is because current anti-counterfeiting technologies based on inkjet-printed security labels are easily copied by counterfeiters due to their uniform patterns and predictable, deterministic decoding mechanisms. Security labels with physical unclonability offer a practical solution to the limitations of widely used anti-counterfeiting technologies and appear to be the most viable approach to combating the growing global counterfeiting problem. The randomness of this feature guarantees uncopyable code output. To date, physical unclonability encryption has made significant progress in the field of anti-counterfeiting. Current technology primarily focuses on generating random features composed of rough surfaces or discrete nanoparticle arrays within predefined pattern areas. For example, randomly wrinkled silica-coated polymer particles can be used as encryption codes to generate unique artificial fingerprints for anti-counterfeiting applications; or, taking advantage of the electrostatic self-assembly strategy, fluorescently doped silver-silica core-shell nanoparticles can be used as building blocks to generate randomly arranged plasma arrays as encryption codes, thereby producing multi-light signal encoded, unidentifiable security tags.

[0003] However, creating these two-dimensional graphic security tags carrying physically unclonable codes requires expensive photolithography technology, which undoubtedly greatly increases the manufacturing cost and decoding difficulty of the security tags. On the other hand, the method of using sound fields to achieve patterned arrangement of particles has made great progress recently. By using surface acoustic waves (SAWs) to drive the particles, they can be arranged in a regular array on a macroscopic scale. At the microscopic level, the specific position of individual particles and the number of particles in a local area are physically unpredictable, thus possessing the characteristic of being physically unclonable. SAW manipulation technology has significant advantages in the field of information encryption applications due to its simple manipulation method, high integration, and ease of combination with other technologies. By using photopolymerization molding technology, the positions of patterned particles can be fixed in photosensitive resin, thereby realizing the design and manufacture of anti-counterfeiting label films of various shapes. Existing technology lacks a process for designing and manufacturing anti-counterfeiting label films using SAW manipulation technology. Summary of the Invention

[0004] To achieve customized design and manufacturing of anti-counterfeiting label films with physically unclonable properties, this invention proposes a photocurable forming device and method for anti-counterfeiting label films based on surface acoustic wave manipulation. This method utilizes the characteristics of surface acoustic wave to control the patterned array arrangement of microparticles, making their positions and quantities random and disordered at the microscopic level, and photocuring selectively forms the film.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows:

[0006] I. A device for photopolymerization molding of anti-counterfeiting label films based on surface acoustic wave manipulation:

[0007] It includes a piezoelectric substrate, interdigitated electrodes, a shaped frame, an ultraviolet light source, photosensitive resin, and microparticles; the interdigitated electrodes and the shaped frame are placed on the upper surface of the piezoelectric substrate, the ultraviolet light source is located below the piezoelectric substrate, the photosensitive resin and microparticles are stored inside the shaped frame, the ultraviolet light emitted by the ultraviolet light source is projected onto the photosensitive resin, and the photosensitive resin within the ultraviolet light projection range forms an anti-counterfeiting label film.

[0008] By adjusting the shape and position of the ultraviolet light projection onto the photosensitive resin, the shape of the anti-counterfeiting label film and the arrangement of the internal particles can be adjusted respectively.

[0009] By changing the phase and voltage of the external electrical signal or altering the relative positions of the interdigitated electrodes that input the external electrical signal, the position and shape of the particles can be changed, thereby altering the arrangement of the particles inside the anti-counterfeiting label film.

[0010] The forming frame is bonded to the center of the upper surface of the piezoelectric substrate. The hollow part in the middle of the forming frame is a forming chamber for placing photosensitive resin and particles. The particles are dispersed in the photosensitive resin. Several interdigitated electrodes are arranged at intervals along the circumference of the piezoelectric substrate on the outer periphery of the upper surface of the piezoelectric substrate. Each interdigitated electrode and the forming frame do not contact each other.

[0011] The interdigitated electrodes are connected to external electrical signals.

[0012] The interdigitated electrodes are made of single-metal aluminum using a magnetron sputtering process, and the piezoelectric substrate is a single crystal of lithium niobate.

[0013] II. A method for photocuring and forming an anti-counterfeiting label film of the aforementioned device, comprising the following steps:

[0014] Step 1: Input an external electrical signal into the interdigital electrode. The interdigital electrode converts the external electrical signal into a sinusoidal excitation signal and inputs it into the piezoelectric substrate. The sinusoidal excitation signal causes the piezoelectric substrate to generate a surface acoustic wave with a two-dimensional waveform. The surface acoustic wave drives the particles in the photosensitive resin to gather at the trough of the surface acoustic wave, thereby forming a stripe array. The stripe array is composed of particles gathered at the continuous troughs of the surface acoustic wave.

[0015] Step 2: Once the shape of the stripe array is stable, turn on the ultraviolet light source so that the ultraviolet light emitted by the ultraviolet light source is projected onto the photosensitive resin. The photosensitive resin at the ultraviolet light projection position is cured due to its selective photocuring properties. The cured photosensitive resin is then removed from the molding chamber and used as an anti-counterfeiting label film.

[0016] Step 3: Steps 1 and 2 performed sequentially constitute the complete photocuring process of the anti-counterfeiting label film. Repeating the photocuring process of the anti-counterfeiting label film multiple times will produce anti-counterfeiting label films with different shapes or different particle arrangement methods.

[0017] When particles gather at the troughs of surface acoustic waves, the particles move in an unpredictable and random manner. That is, the number of particles at the troughs of surface acoustic waves and the relative positions between the particles are uncertain, which makes the anti-counterfeiting label film physically unclonable.

[0018] In step 3, anti-counterfeiting label films with different shapes or particle arrangement methods are produced. The specific operation is as follows:

[0019] By changing the shape and position of ultraviolet light projected onto the photosensitive resin, the shape of the anti-counterfeiting label film and the arrangement of internal particles can be changed respectively.

[0020] By changing the phase and voltage of the external electrical signal or altering the relative positions of the interdigitated electrodes that input the external electrical signal, the position and shape of the stripe array can be changed, thereby forming anti-counterfeiting label films with different particle arrangement patterns, thus achieving the physical non-cloning property of the anti-counterfeiting label film.

[0021] The method of changing the relative positional relationship of the interdigitated electrodes that input external electrical signals, thereby altering the position and shape of the stripe array, specifically involves:

[0022] If an external electrical signal is input to three of the six interdigitated electrodes, which are spaced apart, the surface acoustic wave drives the particles to aggregate and form a linear stripe array. The linear stripe array is composed of particles that aggregate at the trough positions along the same straight line on the surface acoustic wave.

[0023] If an external electrical signal is input into the six interdigitated electrodes, the surface acoustic wave drives the particles to aggregate and form an arc-shaped stripe array. The arc-shaped stripe array is composed of particles that aggregate at the troughs of the surface acoustic wave.

[0024] III. A method for using the anti-counterfeiting label film of the aforementioned device, characterized by comprising the following steps:

[0025] Step 1: Record the shape of the anti-counterfeiting label film and the arrangement of the internal particles as the basic information of the anti-counterfeiting label film, and store the basic information of the anti-counterfeiting label film as anti-counterfeiting information in the system database;

[0026] Step 2: Affix the anti-counterfeiting label film to the product for which anti-counterfeiting measures are required;

[0027] Step 3: When the product requiring authenticity verification arrives at the user's hands, the user logs into the designated query website for the product, scans the anti-counterfeiting label film on the product using a scanning device, and the query website automatically compares the basic information of the scanned anti-counterfeiting label film with the anti-counterfeiting information in the system database:

[0028] If the basic information of the anti-counterfeiting label film scanned by the user matches the anti-counterfeiting information in the system database, the website will display that the product is genuine.

[0029] If the basic information of the anti-counterfeiting label film scanned by the user does not match the anti-counterfeiting information in the system database, the website will display the product as counterfeit.

[0030] This invention can generate high-frequency surface acoustic waves on a piezoelectric substrate by inputting an external electrical signal (i.e., an alternating current signal) to the interdigitated electrodes arranged on the piezoelectric substrate, thereby enabling patterned manipulation of microparticles within the forming chamber. Subsequently, the photosensitive resin within the forming chamber is selectively photocured by an ultraviolet light source arranged below the piezoelectric substrate, thus completing the fabrication of the anti-counterfeiting label film.

[0031] The beneficial effects of this invention are as follows:

[0032] (1) This invention utilizes sound field to manipulate the patterned stripe array of particles. While ensuring that the particle array has a fixed shape on a macroscopic scale, the number and distribution position of the particles on a microscopic scale are completely random. Therefore, it has the physical non-cloning property, and its decoding mechanism is unpredictable and cannot be copied.

[0033] (2) The equipment used in this invention is simple and easy to operate. Furthermore, by changing the excitation combination of the interdigital electrodes and the projection shape of the ultraviolet light source, it is also possible to manufacture anti-counterfeiting label films with different particle patterning features and different photocuring shapes.

[0034] (3) The present invention has the characteristics of being easy to combine with other information encryption and anti-counterfeiting technologies and having low manufacturing cost.

[0035] In summary, this invention utilizes the characteristics of surface acoustic waves to control the patterned array arrangement of microparticles, making their positions and quantities random and disordered at the microscopic level, and photocuring selectively shapes them, to achieve photocuring manufacturing of anti-counterfeiting label films with physically unclonable properties. The manufactured anti-counterfeiting label films have the characteristics of being physically unclonable, easy to operate, simple to use, and highly encrypted. Attached Figure Description

[0036] Figure 1 This is a perspective view of the photocuring forming device for anti-counterfeiting label film of the present invention;

[0037] Figure 2 This is a schematic diagram illustrating the distribution characteristics of microparticles in the photosensitive resin when the interdigitated electrodes are turned off in this embodiment.

[0038] Figure 3 This is a schematic diagram illustrating the macroscopic features and local microscopic particle distribution features of a linear patterned array of microparticles achieved by interlacing three interdigitated electrodes in an embodiment.

[0039] Figure 4 This is a schematic diagram illustrating the macroscopic features and local microscopic particle distribution features of a micro-patterned array arrangement achieved by interleaving six interdigitated electrodes at intervals in an embodiment.

[0040] Figure 5 This is a schematic diagram illustrating the manufacturing process of an anti-counterfeiting label film with linear stripes using an ultraviolet light source in an embodiment.

[0041] Figure 6 This is a schematic diagram illustrating the manufacturing process of an anti-counterfeiting label film with arc-shaped stripes using an ultraviolet light source in an embodiment.

[0042] In the figure: 1. Piezoelectric substrate; 2. Interdigitated electrode; 3. Shaped frame; 4. Ultraviolet light source; 5. Photosensitive resin; 6. Microparticles; 7. External electrical signal; 8. Surface acoustic wave; 9. Stripe array; 10. Stripe array; 11. Ultraviolet light; 12. Anti-counterfeiting label film. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the implementation of the present invention is not limited thereto.

[0044] like Figure 1 and Figure 2As shown, the device includes a piezoelectric substrate 1, interdigitated electrodes 2, a forming frame 3, an ultraviolet light source 4, a photosensitive resin 5, and microparticles 6. The interdigitated electrodes 2 and the forming frame 3 are both placed on the upper surface of the piezoelectric substrate 1, the ultraviolet light source 4 is located below the piezoelectric substrate 1, the photosensitive resin 5 and the microparticles 6 are both stored inside the forming frame 3, the ultraviolet light 11 emitted by the ultraviolet light source 4 is projected onto the photosensitive resin 5, the photosensitive resin 5 within the projection range of the ultraviolet light 11 will be cured due to its selective photocuring properties, and the cured photosensitive resin 5 forms an anti-counterfeiting label film 12.

[0045] By adjusting the shape and position of the ultraviolet light 11 projected onto the photosensitive resin 5, the shape of the anti-counterfeiting label film 12 and the arrangement of the internal particles 6 (i.e., the forming area of ​​the particles) can be adjusted respectively.

[0046] By changing the phase and voltage of the external electrical signal 7 or changing the relative position of the interdigitated electrodes of the input external electrical signal 7, the position and shape of the particles 6 are changed, thereby changing the arrangement of the particles 6 inside the anti-counterfeiting label film 12.

[0047] The forming frame 3 is bonded to the center of the upper surface of the piezoelectric substrate 1. The hollow part in the middle of the forming frame 3 is a forming chamber for placing the photosensitive resin 5 and the particles 6. The particles 6 are dispersed in the photosensitive resin 5. Several interdigitated electrodes 2 are arranged at intervals along the circumference of the piezoelectric substrate 1 on the outer periphery of the upper surface of the piezoelectric substrate 1. The interdigitated electrodes 2 and the piezoelectric substrate 1 constitute a surface acoustic wave transducer. The surface acoustic wave transducer is used to excite surface acoustic waves 8 to control the particles 6. Each interdigitated electrode 2 and the forming frame 3 do not contact each other to ensure that the particles 6 in the forming frame 3 do not contact the interdigitated electrodes 2, and to prevent the generation of electrical signal crosstalk and misconduction.

[0048] like Figure 3 and Figure 5 As shown, after the external electrical signal 7 is input to the interdigital electrode 2, the interdigital electrode 2 converts the external electrical signal 7 into a sinusoidal excitation signal, which is then input into the piezoelectric substrate 1. The sinusoidal excitation signal causes the piezoelectric substrate 1 to excite surface acoustic waves 8. After the surface acoustic waves 8 propagate into the molding chamber, the particles 6 in the molding frame 3 will gather towards the trough of the surface acoustic waves 8 under the action of the surface acoustic waves 8, thereby forming a stripe array 9, 10 of a specific shape. The ultraviolet light source 4 can emit ultraviolet light 11 of a specific shape. The photosensitive resin 5 will be cured at the position irradiated by the ultraviolet light 11 due to its selective photocuring properties. The cured photosensitive resin 5 is taken out from the molding chamber as an anti-counterfeiting label film 12. By changing the shape and irradiation position of the ultraviolet light 11, anti-counterfeiting label films 12 with different shapes and different particle 6 arrangements can be formed.

[0049] Interdigitated electrode 2 is connected to external electrical signal 7.

[0050] The interdigitated electrode 2 is made of single-metal aluminum by magnetron sputtering, and the piezoelectric substrate 1 is made of lithium niobate single crystal.

[0051] A method for photocuring anti-counterfeiting label film includes the following steps:

[0052] Step 1: As Figure 2 As shown, when no external electrical signal 7 is input into the interdigital electrode 2, the particles 6 in the forming chamber are randomly distributed in the photosensitive resin 5. When the same external electrical signal 7 is input into any number of interdigital electrodes 2, the interdigital electrodes 2 convert the external electrical signal 7 into a sinusoidal excitation signal and input it into the piezoelectric substrate 1. The sinusoidal excitation signal causes the piezoelectric substrate 1 to generate a surface acoustic wave 8 with a two-dimensional waveform. The surface acoustic wave 8 excites a sound pressure field in the forming chamber. The surface acoustic wave 8 in the sound pressure field drives the particles 6 in the randomly distributed photosensitive resin 5 to gather at the trough position of the surface acoustic wave 8, thereby forming stripe arrays 9 and 10. The stripe arrays 9 and 10 are composed of particles 6 gathered at the continuous trough positions of the surface acoustic wave 8.

[0053] Step 2: After the shape of the stripe array 9 and 10 is stable, turn on the ultraviolet light source 4 so that the ultraviolet light 11 emitted by the ultraviolet light source 4 is projected onto the photosensitive resin 5. The photosensitive resin 5 at the projection position of the ultraviolet light 11 is cured due to its selective photocuring performance. The cured photosensitive resin 5 is taken out from the forming chamber as the anti-counterfeiting label film 12.

[0054] Step 3: Steps 1 and 2 performed sequentially constitute the complete photocuring process of the anti-counterfeiting label film. Repeating the photocuring process of the anti-counterfeiting label film multiple times produces anti-counterfeiting label films 12 with different shapes or different arrangements of particles 6.

[0055] When particles 6 converge at the troughs of the surface acoustic wave 8, their movement is unpredictable and random. This means the number of particles 6 at the troughs of the surface acoustic wave 8 and their relative positions are uncertain. This makes the anti-counterfeiting label film 12 physically unclonable, allowing for effective encryption and storage of anti-counterfeiting information. Different arrangements of particles 6 can be used for the initial identification of different types of anti-counterfeiting label information.

[0056] In step 3, anti-counterfeiting label films 12 with different shapes or different particle arrangement patterns are produced. The specific operation is as follows:

[0057] By changing the shape and position of the ultraviolet light 11 projected onto the photosensitive resin 5, the shape of the anti-counterfeiting label film 12 and the arrangement of the internal particles 6 are changed respectively.

[0058] By changing the phase and voltage of the external electrical signal 7 or changing the relative position of the interdigitated electrodes of the input external electrical signal 7, the arrangement of particles 6 in the photosensitive resin 5 is changed, thereby changing the position and shape of the stripe arrays 9 and 10, thus forming anti-counterfeiting label films 12 with different particle 6 arrangement patterns, achieving the physical non-cloning of the anti-counterfeiting label film 12.

[0059] Stripe arrays 9 and 10 are used for preliminary classification and verification of anti-counterfeiting information in anti-counterfeiting label film 12. The position and number of particles 6 in stripe arrays 9 and 10 are in an unpredictable random disorder at the microscopic level. Therefore, anti-counterfeiting label film 12 has physical non-cloning properties and can be used for effective encryption and storage of anti-counterfeiting information.

[0060] The method of changing the relative positional relationship of the interdigitated electrodes of the input external electrical signal 10, thereby changing the position and shape of the stripe arrays 9 and 10, specifically involves:

[0061] like Figure 3 and Figure 5 As shown, if an external electrical signal 7 is input to three interdigitated electrodes 2 that are spaced apart among the six interdigitated electrodes 2, the surface acoustic wave 8 drives the particles 6 to aggregate and form a linear stripe array 9. The linear stripe array 9 is composed of particles 6 that aggregate at the trough positions along the same straight line on the surface acoustic wave 8.

[0062] like Figure 4 and Figure 6 As shown, if an external electrical signal 7 is input into the six interdigitated electrodes 2, the surface acoustic wave 8 drives the particles 6 to gather and form an arc-shaped stripe array 10. The arc-shaped stripe array 10 is composed of particles 6 gathered at the troughs of the surface acoustic wave 8.

[0063] A method for using an anti-counterfeiting label film includes the following steps:

[0064] Step 1: Record the shape of the anti-counterfeiting label film 12 and the arrangement of the internal particles 6 as the basic information of the anti-counterfeiting label film 12, and store the basic information of the anti-counterfeiting label film 12 as anti-counterfeiting information in the system database;

[0065] Step 2: Affix the anti-counterfeiting label film 12 to the product for which anti-counterfeiting measures are required;

[0066] Step 3: When the product requiring authenticity verification arrives at the user's hands, the user logs into the designated query website for the product, scans the anti-counterfeiting label film on the product using a scanning device, and the query website automatically compares the basic information of the scanned anti-counterfeiting label film with the anti-counterfeiting information in the system database:

[0067] If the basic information of the anti-counterfeiting label film scanned by the user matches the anti-counterfeiting information in the system database, the website will display that the product is genuine.

[0068] If the basic information of the anti-counterfeiting label film scanned by the user does not match the anti-counterfeiting information in the system database, the website will display the product as counterfeit.

[0069] As can be seen from the embodiments, the present invention utilizes the characteristics of surface acoustic waves to control the patterned array arrangement of microparticles, making their positions and quantities random and disordered at the micro level, and selectively forming by photocuring, to achieve photocuring manufacturing of anti-counterfeiting label films with physically unclonable properties. The manufactured anti-counterfeiting label films have the characteristics of being physically unclonable, easy to operate, simple to use, and highly encrypted.

Claims

1. A device for photopolymerization molding of anti-counterfeiting label films based on surface acoustic wave manipulation, characterized in that: The device includes a piezoelectric substrate (1), interdigitated electrodes (2), a shaped frame (3), an ultraviolet light source (4), a photosensitive resin (5), and microparticles (6). The interdigitated electrodes (2) and the shaped frame (3) are both placed on the upper surface of the piezoelectric substrate (1), the ultraviolet light source (4) is located below the piezoelectric substrate (1), the photosensitive resin (5) and the microparticles (6) are both stored inside the shaped frame (3), the ultraviolet light (11) emitted by the ultraviolet light source (4) is projected onto the photosensitive resin (5), and the photosensitive resin (5) within the projection range of the ultraviolet light (11) forms an anti-counterfeiting label film (12). By adjusting the shape and position of the ultraviolet light (11) projected onto the photosensitive resin (5), the shape of the anti-counterfeiting label film (12) and the arrangement of the internal particles (6) can be adjusted respectively. By changing the phase and voltage of the external electrical signal (7) or changing the relative position of the interdigitated electrodes of the input external electrical signal (7), the position and shape of the particles (6) can be changed, thereby changing the arrangement of the particles (6) inside the anti-counterfeiting label film (12). When the particles (6) gather at the trough of the surface acoustic wave (8), the particles (6) move randomly and disorderly in an unpredictable manner. That is, the number of particles (6) at the trough of the surface acoustic wave (8) and the relative positions between the particles (6) are uncertain, which makes the anti-counterfeiting label film (12) physically unclonable. The forming frame (3) is bonded to the center of the upper surface of the piezoelectric substrate (1). The hollow part in the middle of the forming frame (3) is a forming chamber for placing the photosensitive resin (5) and the microparticles (6). The microparticles (6) are dispersed in the photosensitive resin (5). Several interdigitated electrodes (2) are arranged at intervals along the circumference of the piezoelectric substrate (1) on the outer periphery of the upper surface of the piezoelectric substrate (1). Each interdigitated electrode (2) and the forming frame (3) do not contact each other.

2. The anti-counterfeiting label film photocuring forming device based on surface acoustic wave manipulation according to claim 1, characterized in that: The interdigitated electrode (2) is connected to an external electrical signal (7).

3. The anti-counterfeiting label film photocuring forming device based on surface acoustic wave manipulation according to claim 1, characterized in that: The interdigitated electrode (2) is made of single-metal aluminum by magnetron sputtering, and the piezoelectric substrate (1) is made of lithium niobate single crystal.

4. A method for photocuring anti-counterfeiting label film applied to the device described in any one of claims 1-3, characterized in that, Includes the following steps: Step 1: Input an external electrical signal (7) into the interdigital electrode (2). The interdigital electrode (2) converts the external electrical signal (7) into a sinusoidal excitation signal and inputs it into the piezoelectric substrate (1). The sinusoidal excitation signal causes a surface acoustic wave (8) with a two-dimensional waveform to be generated in the piezoelectric substrate (1). The surface acoustic wave (8) drives the particles (6) in the photosensitive resin (5) to gather at the trough position of the surface acoustic wave (8), thereby forming a stripe array (9, 10). The stripe array (9, 10) is composed of particles (6) gathered at the continuous trough position of the surface acoustic wave (8). Step 2: After the shape of the stripe array (9, 10) is stable, turn on the ultraviolet light source (4) so ​​that the ultraviolet light (11) emitted by the ultraviolet light source (4) is projected onto the photosensitive resin (5). The photosensitive resin (5) at the projection position of the ultraviolet light (11) is cured due to its selective photocuring performance. The cured photosensitive resin (5) is taken out from the molding chamber as an anti-counterfeiting label film (12). Step 3: Steps 1 and 2 performed in sequence constitute the complete photocuring process of the anti-counterfeiting label film. Repeat the photocuring process of the anti-counterfeiting label film multiple times to produce anti-counterfeiting label films (12) with different shapes or different arrangement of particles (6). When the particles (6) gather at the trough of the surface acoustic wave (8), the particles (6) move randomly and unpredictably. That is, the number of particles (6) at the trough of the surface acoustic wave (8) and the relative positions between the particles (6) are uncertain, which makes the anti-counterfeiting label film (12) physically unclonable.

5. The photopolymerization molding method for anti-counterfeiting label films according to claim 4, characterized in that: In step 3, anti-counterfeiting label films (12) with different shapes or different particle (6) arrangement methods are produced. The specific operation is as follows: By changing the shape and position of the ultraviolet light (11) projected onto the photosensitive resin (5), the shape of the anti-counterfeiting label film (12) and the arrangement of the internal particles (6) are changed respectively. By changing the phase and voltage of the external electrical signal (7) or changing the relative position of the interdigitated electrodes of the input external electrical signal (7), the position and shape of the stripe array (9, 10) are changed, thereby forming anti-counterfeiting label films (12) with different particle (6) arrangement patterns, and realizing the physical non-cloning of the anti-counterfeiting label film (12).

6. The photopolymerization molding method for anti-counterfeiting label films according to claim 5, characterized in that: The method of changing the relative positional relationship of the interdigitated electrodes of the input external electrical signal (7) to change the position and shape of the stripe array (9, 10) is as follows: If an external electrical signal (7) is input to three interdigitated electrodes (2) that are spaced apart among the six interdigitated electrodes (2), the surface acoustic wave (8) drives the particles (6) to gather and form a linear stripe array (9). The linear stripe array (9) is composed of particles (6) that gather at the trough positions along the same straight line on the surface acoustic wave (8). If an external electrical signal (7) is input into the six interdigitated electrodes (2), the surface acoustic wave (8) drives the particles (6) to gather and form an arc-shaped stripe array (10). The arc-shaped stripe array (10) is composed of particles (6) that gather at the trough of the surface acoustic wave (8).

7. A method for using an anti-counterfeiting label film applied to any one of the devices described in claims 1-3, characterized in that, Includes the following steps: Step 1: Record the shape of the anti-counterfeiting label film (12) and the arrangement of the internal microparticles (6) as the basic information of the anti-counterfeiting label film (12), and store the basic information of the anti-counterfeiting label film (12) as anti-counterfeiting information in the system database; Step 2: Adhere the anti-counterfeiting label film (12) to the product for which anti-counterfeiting is required; Step 3: When the product requiring authenticity verification arrives at the user's hands, the user logs into the designated query website for the product, scans the anti-counterfeiting label film on the product using a scanning device, and the query website automatically compares the basic information of the scanned anti-counterfeiting label film with the anti-counterfeiting information in the system database: If the basic information of the anti-counterfeiting label film scanned by the user matches the anti-counterfeiting information in the system database, the website will display that the product is genuine. If the basic information of the anti-counterfeiting label film scanned by the user does not match the anti-counterfeiting information in the system database, the website will display the product as counterfeit.

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