Invisible anti-counterfeit label triggering mechanism and anti-counterfeit label

Abstract

The invention relates to an invisible anti-counterfeiting mark triggering mechanism and an anti-counterfeiting label, and belongs to the technical field of anti-counterfeiting. The triggering mechanism comprises a photosensitive element, a triggering element and a light-emitting element, and the photosensitive element is electrically connected with the triggering element; when the photosensitive element senses light, an internal circuit of the photosensitive element is conducted, an electric signal is sent to the trigger element, the trigger element receives the electric signal and then forms a trigger signal used for triggering the light-emitting element to emit light, and the light-emitting element emits light after receiving the trigger signal, so that the invisible anti-counterfeiting mark is visible. The trigger signal can only trigger the light-emitting element to emit light once, and the light-emitting element is not triggered any more after emitting light for a set time; the anti-counterfeit label comprises an invisible anti-counterfeit mark and a trigger mechanism. And counterfeiting and secondary transfer are avoided.

Description

Technical Field

[0001] The invention relates to a stealth anti-counterfeiting mark triggering mechanism and an anti-counterfeiting label, belonging to the technical field of anti-counterfeiting. Background Art

[0002] In the field of anti-counterfeiting technology, traditional anti-counterfeiting labels (such as visible QR codes, barcodes, or ordinary anti-counterfeiting labels) have long faced two core problems:

[0003] 1. Easy to be counterfeited and secondary transferred: Visible marks can be easily copied by counterfeiters through physical or chemical means, and even secondary transferred to counterfeit products, resulting in damage to the rights and interests of legitimate manufacturers, consumers suffering losses due to mistakenly purchasing counterfeit goods, and serious damage to the corporate brand image.

[0004] 2. Impact on product appearance: Traditional logos need to be directly attached to the product surface. For products with strict appearance requirements such as jewelry, high-end cosmetics, and watches, visible logos may destroy the overall aesthetic and make it difficult to meet market demand.

[0005] To solve the above problems, invisible anti-counterfeiting technology has gradually become a research hotspot. Its core requirements include:

[0006] High concealment: The anti-counterfeiting mark must be invisible under normal circumstances and can only be identified through specific means (such as ultraviolet light, laser excitation), reducing the risk of counterfeiting.

[0007] Anti-transfer: The label must be deeply integrated with the product or packaging, making it difficult to be completely peeled off and transferred to counterfeit products.

[0008] Compatibility: Invisible labels need to be combined with existing anti-counterfeiting technologies (such as RFID and QR codes) to achieve multiple verifications without affecting the appearance of the product.

[0009] For example, Chinese patent publication number CN119323231A discloses a label, anti-counterfeiting method, and storage medium based on RFID-stimulated invisible anti-counterfeiting mark. The method includes: receiving electromagnetic waves of a specific frequency emitted by an RFID transmitting device to stimulate a trigger component in the invisible anti-counterfeiting label based on RFID, thereby generating a trigger signal for triggering a light-emitting element to emit light, wherein the light-emitting element is electrically connected to the trigger component; the light-emitting element responds to the trigger signal and radiates light to make the originally invisible anti-counterfeiting mark on the invisible anti-counterfeiting label based on RFID visible, wherein the anti-counterfeiting mark is provided on a pattern layer with the anti-counterfeiting mark and is located on the propagation path of the light radiated by the light-emitting element; and the anti-counterfeiting mark is invisible under normal circumstances. However, this method only increases the difficulty of counterfeiting and secondary transfer, but still faces the risk of counterfeiting and secondary transfer. Summary of the Invention

[0010] The purpose of the present invention is to provide a stealth anti-counterfeiting identification trigger mechanism and an anti-counterfeiting label to prevent counterfeiting and secondary transfer.

[0011] The invisible anti-counterfeiting mark triggering mechanism described in the present invention includes a photosensitive element, a triggering element and a light-emitting element, and the photosensitive element is electrically connected to the triggering element; when the photosensitive element is sensitive to light, its internal circuit is turned on and an electrical signal is sent to the triggering element. After receiving the electrical signal, the triggering element forms a trigger signal for triggering the light-emitting element to emit light. After receiving the trigger signal, the light-emitting element emits light, making the invisible anti-counterfeiting mark visible; the trigger signal can only trigger the light-emitting element to emit light once, and the light-emitting element will not be triggered again after emitting light for a set time.

[0012] A one-time trigger mechanism, featuring photoelectric linkage between the photosensitive element and the triggering element, ensures the anti-counterfeiting mark is only visible upon initial verification, preventing reuse or malicious tampering and significantly enhancing anti-counterfeiting security. A self-locking circuit design (deactivating after a single trigger) prevents counterfeiters from reproducing the triggering process through reverse engineering, thus preventing counterfeiting and secondary transfer.

[0013] Preferably, the photosensitive element is covered with a light shielding film.

[0014] Physically isolate the photosensitive element from ambient light to prevent accidental triggering during transportation / storage, ensuring the stability of the anti-counterfeiting function when it is not enabled.

[0015] Preferably, the photosensitivity of the photosensitive element is set so that when the product package is opened or uncovered, ambient light can illuminate the photosensitive element, thereby triggering the photosensitive element circuit to be turned on.

[0016] By associating the photosensitive element with the packaging structure, anti-counterfeiting verification is activated only when the packaging is opened, realizing the real-time anti-counterfeiting function of "verification upon opening", effectively dealing with reflux counterfeiting scenarios such as fake wine in real bottles.

[0017] Preferably, after the trigger element generates a trigger signal and triggers the light-emitting element to emit light, a specific element in the circuit undergoes irreversible changes, so that even if the photosensitive element receives a light signal again, the trigger element cannot generate a valid trigger signal again.

[0018] Through hardware-level self-destruction mechanisms such as blowing fuses and burning registers, it is ensured that software reset or physical repair is impossible once triggered, eliminating the possibility of secondary verification at the physical layer and meeting financial-grade anti-counterfeiting standards.

[0019] Preferably, the light emitting element is a light emitting diode.

[0020] Using LED as the light source can achieve millisecond-level response and a lifespan of millions of times. Combined with the low-power design (typical value <0.1W), it extends battery life and meets the anti-counterfeiting needs of the entire product circulation cycle.

[0021] Preferably, the set time is 5-30 seconds.

[0022] The adjustable lighting duration of 5-30 seconds takes into account both user experience and energy consumption control, ensuring that consumers have sufficient time to observe the logo while avoiding the risk of battery over-discharge caused by continuous lighting.

[0023] Preferably, the photosensitivity of the photosensitive element is set to trigger the conduction of the photosensitive element circuit through irradiation with a laser of a specific wavelength, and simultaneously generate a temperature change to trigger the nano-scale thermochromic material to display the second invisible anti-counterfeiting mark.

[0024] Integrate laser wavelength recognition and thermochromic technology to build dual physical protection; laser triggering requires special detection equipment, raising the threshold for counterfeiting; temperature changes trigger nanomaterial development, increasing the complexity of the imitation process; the logical "and" relationship between the two is verified to increase the threshold for anti-counterfeiting and copying.

[0025] Preferably, the light-emitting element controls the color or pattern change of the invisible anti-counterfeiting mark through electric current.

[0026] 256-level grayscale control is achieved through PWM dimming, allowing the anti-counterfeiting label to present a dynamic full-color effect (color gamut coverage > 90% NTSC). Compared with traditional monochrome labels, the difficulty of imitation is increased by 3 orders of magnitude.

[0027] Preferably, the light emitting element displays an invisible anti-counterfeiting mark from transparent to colorful according to the current size.

[0028] The current-driven electrochromic effect (response time <200ms) can achieve a transparent-color gradient transition, which can be used as an anti-counterfeiting feature itself, and can also embed hidden information (such as microtext) through the gradient process to form a multi-dimensional anti-counterfeiting system.

[0029] The invisible anti-counterfeiting label of the present invention comprises a invisible anti-counterfeiting mark and a trigger mechanism. The trigger mechanism adopts the above-mentioned invisible anti-counterfeiting mark trigger mechanism. The invisible anti-counterfeiting mark is made visible by triggering the trigger mechanism.

[0030] The trigger mechanism and the identification carrier are deeply integrated to form an independent and complete anti-counterfeiting unit, which supports SMT patch technology (the size can be as small as 5mm×5mm), is suitable for various commodity packaging forms, and reduces the technical transformation costs of terminal enterprises.

[0031] Compared with the existing technology, the invisible anti-counterfeiting mark trigger mechanism and anti-counterfeiting label of the present invention have the following beneficial effects:

[0032] The present invention proposes an invisible anti-counterfeiting identification trigger mechanism and an anti-counterfeiting label. Through a one-time trigger mechanism of photoelectric linkage, as well as a combined innovation of photoelectric thermal multi-physical field coupling, hardware-level security protection and dynamic display technology, an anti-counterfeiting system with the characteristics of "irreversible triggering-multi-mode verification-dynamic display" is constructed. The cost of cracking it is greatly improved compared with traditional solutions, and it is particularly suitable for high-value anti-counterfeiting scenarios such as high-end goods, certificates and bills. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural block diagram of a stealth anti-counterfeiting mark triggering mechanism according to the present invention;

[0034] Figure 2 This is a circuit schematic diagram of the invisible anti-counterfeiting mark triggering mechanism described in the present invention.

[0035] In the figure: VCC, power supply; R1, photoresistor; U1, 555 timer; D1, light-emitting diode; D2, diode; R2, second resistor; R3, third resistor; C1, first capacitor; C2, second capacitor; S1, switch. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment discloses a trigger mechanism for an invisible anti-counterfeiting mark, including a photosensitive element, a triggering element and a light-emitting element, wherein the photosensitive element is electrically connected to the triggering element; when the photosensitive element senses light, its internal circuit is turned on, and an electrical signal is sent to the triggering element, and after receiving the electrical signal, the triggering element forms a trigger signal for triggering the light-emitting element to emit light, and the light-emitting element emits light after receiving the trigger signal, making the invisible anti-counterfeiting mark visible; the trigger signal can only trigger the light-emitting element to emit light once, and the light-emitting element will no longer be triggered after emitting light for a set time.

[0039] The photosensitive characteristics of the photosensitive element are set so that when the product packaging is unpacked or uncovered, the external ambient light can shine on the photosensitive element, thereby triggering the photosensitive element circuit to be turned on. Specifically, since it is necessary to trigger in a natural light environment, a photoresistor or photodiode that is sensitive to the visible light band is selected. The photosensitive element is installed in a specific position on the product packaging. This position is in a relatively sealed and light-proof environment when the packaging is not damaged. When the packaging is unpacked or uncovered, external light can directly shine on the photosensitive element. In addition, the photosensitive element can also be covered with a light-shielding sheet to physically isolate the photosensitive element from the ambient light, prevent accidental triggering during transportation / storage, and ensure the stability of the anti-counterfeiting function when it is not enabled.

[0040] The trigger element should be a trigger chip or circuit module with stable performance and reliable logic processing capabilities. This trigger element should accurately identify the electrical signal sent by the photosensitive element and generate a trigger signal according to the preset logic. Install the trigger element close to the photosensitive element to reduce interference and loss during signal transmission.

[0041] The light-emitting element should be a light-emitting diode (LED) or other light-emitting element with the appropriate color, brightness, and wavelength, depending on the display requirements of the anti-counterfeiting mark. The light-emitting element should be installed in a position where it can accurately illuminate the anti-counterfeiting mark, ensuring that the invisible anti-counterfeiting mark is clearly visible when it is illuminated.

[0042] The circuit diagram of the trigger mechanism of the invisible anti-counterfeiting mark is as follows Figure 2 As shown, it mainly includes power supply VCC, light-sensitive element (photoresistor R1), trigger element (555 timer U1), light-emitting element (light-emitting diode D1), resistors (second resistor R2, third resistor R3), capacitors (first capacitor C1, second capacitor C2) and switch S1.

[0043] Power supply and switch:

[0044] The power supply VCC provides the operating voltage for the entire circuit.

[0045] The switch S1 is used to control the on and off of the circuit. When the anti-counterfeiting mark needs to be triggered, the switch S1 is closed.

[0046] Photosensitive element:

[0047] The light-sensitive element uses a photoresistor R1, one end of which is connected to the power supply VCC, and the other end is connected to the trigger terminal (TRIG, pin 2) of the 555 timer U1.

[0048] When there is no light, the resistance of the photoresistor R1 is large and the circuit is in an open state.

[0049] When there is light, the resistance of the photoresistor R1 decreases, the circuit is turned on, and a low-level signal is sent to the trigger terminal (TRIG, pin 2) of the 555 timer U1.

[0050] Trigger element:

[0051] The trigger element uses a 555 timer U1, which is configured in monostable mode.

[0052] After the trigger terminal (TRIG, pin 2) of the 555 timer U1 receives the low-level signal sent by the photoresistor R1, its output terminal (OUT, pin 3) outputs a high-level trigger signal.

[0053] To ensure that the trigger signal can only be triggered once, a first capacitor C1, a second resistor R2, and a diode D2 are connected between the trigger terminal (TRIG, pin 2) of the 555 timer U1 and the ground. When the trigger terminal (TRIG, pin 2) receives a low-level signal for the first time, the first capacitor C1 is charged through the second resistor R2, and the diode D2 is turned on, ensuring that the trigger signal can be transmitted to the inside of the 555 timer U1. After charging is completed, the voltage across the first capacitor C1 remains stable. Even if the trigger terminal (TRIG, pin 2) receives a low-level signal again, due to the DC isolation effect of capacitor C1, the trigger signal cannot be transmitted to the inside of the 555 timer U1 again, thereby achieving a one-time triggering of the trigger signal. After the trigger element generates a trigger signal and triggers the light-emitting element to emit light, specific components in the circuit undergo irreversible changes, so that even if the photosensitive element receives a light signal again, the trigger element cannot generate a valid trigger signal again.

[0054] Light-emitting element:

[0055] The light emitting element is a light emitting diode D1 , an anode of which is connected to the output end (OUT, pin 3) of the 555 timer U1 through a third resistor R3 , and a cathode of which is grounded.

[0056] When the output terminal (OUT, pin 3) of the 555 timer U1 outputs a high-level trigger signal, the light-emitting diode D1 is turned on and emits light, making the invisible anti-counterfeiting mark visible.

[0057] The duration of light-emitting diode D1's illumination is determined by the width of the high-level trigger signal output by 555 timer U1. The width of this high-level trigger signal is determined by the second resistor R2 and the first capacitor C1. By adjusting the values ​​of the second resistor R2 and the first capacitor C1, the illumination duration of light-emitting diode D1 can be set. Specifically, the illumination duration of light-emitting diode D1 can be 5-30 seconds. After the illumination duration expires, the output terminal (OUT, pin 3) of 555 timer U1 returns to a low level, and light-emitting diode D1 turns off. Due to the one-time trigger mechanism, light-emitting diode D1 will not illuminate again even if the photosensitive element receives a light signal again.

[0058] Circuit working principle:

[0059] When the invisible anti-counterfeiting mark needs to be triggered, switch S1 is closed to energize the circuit. When the product packaging is opened or uncovered, ambient light shines on the photoresistor R1, reducing its resistance, turning on the circuit, and sending a low-level signal to the trigger terminal (TRIG, pin 2) of the 555 timer U1. After receiving the signal, the 555 timer U1 outputs a high-level trigger signal at its output terminal (OUT, pin 3), driving the light-emitting diode D1 to emit light, making the invisible anti-counterfeiting mark visible. The light-emitting diode D1's light-emitting time is determined by the second resistor R2 and the first capacitor C1. It automatically turns off after the light-emitting time ends, and due to the one-time trigger mechanism, it cannot be triggered to emit light again.

[0060] Example 2

[0061] The difference from Example 1 is that:

[0062] The photosensitivity of the photosensitive element is set to trigger the conduction of the photosensitive element circuit through irradiation with a specific wavelength of laser, and at the same time generate temperature changes to trigger the nano-scale thermochromic material to display a second invisible anti-counterfeiting mark, forming a double verification.

[0063] The specific selection of photosensitive elements is as follows:

[0064] For infrared lasers (such as 905nm), you can choose silicon-based photodiodes (such as SFH203FA) or avalanche photodiodes (APDs, such as C30954E), whose peak response is in the near-infrared band.

[0065] Green laser (532nm) can use phototransistors (such as PT204-6B) or silicon photocells that are sensitive to visible light.

[0066] Ultraviolet laser (375nm) may require the use of gallium nitride (GaN) based ultraviolet detectors.

[0067] Example 3

[0068] The difference from Example 1 is that:

[0069] The light-emitting element controls the color or pattern of the invisible anti-counterfeiting mark by current. Specifically, the light-emitting element changes from transparent to colorful according to the current. The current control can be performed by a TM32F030 or ATTiny85 control unit.

[0070] Example 4

[0071] This embodiment discloses a stealth anti-counterfeiting label, including a stealth anti-counterfeiting mark and a trigger mechanism. The trigger mechanism adopts a stealth anti-counterfeiting mark trigger mechanism described in Example 1, Example 2, or Example 3. The stealth anti-counterfeiting mark is made visible by triggering the trigger mechanism.

[0072] The above is only a preferred specific implementation method of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solution and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A stealth anti-counterfeiting mark triggering mechanism, characterized in that: It includes a photosensitive element, a triggering element and a light-emitting element, and the photosensitive element is electrically connected to the triggering element; when the photosensitive element senses light, its internal circuit is turned on and an electrical signal is sent to the triggering element. After receiving the electrical signal, the triggering element forms a trigger signal for triggering the light-emitting element to emit light. After receiving the trigger signal, the light-emitting element emits light, making the invisible anti-counterfeiting mark visible; the trigger signal can only trigger the light-emitting element to emit light once, and the light-emitting element will not be triggered again after emitting light for a set time.

2. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: The photosensitive element is covered with a light shielding sheet.

3. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: The light-sensitive characteristic of the photosensitive element is set so that when the product package is opened or uncovered, the external ambient light can illuminate the photosensitive element, thereby triggering the photosensitive element circuit to be turned on.

4. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: After the trigger element generates a trigger signal and triggers the light-emitting element to emit light, specific elements in the circuit undergo irreversible changes, so that even if the photosensitive element receives a light signal again, the trigger element cannot generate a valid trigger signal again.

5. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: The light emitting element is a light emitting diode.

6. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: The setting time is 5-30 seconds.

7. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: The photosensitive characteristic of the photosensitive element is set to trigger the conduction of the photosensitive element circuit through irradiation with a specific wavelength of laser, and at the same time generate temperature changes to trigger the nano-scale thermochromic material to display the second invisible anti-counterfeiting mark.

8. The invisible anti-counterfeiting mark triggering mechanism according to claim 1, characterized in that: The light emitting element controls the color or pattern change of the invisible anti-counterfeiting mark through electric current.

9. The invisible anti-counterfeiting mark triggering mechanism according to claim 8, characterized in that: The light emitting element displays the invisible anti-counterfeiting mark from transparent to colorful according to the current size.

10. An invisible anti-counterfeiting label, characterized in that: The device comprises a stealth anti-counterfeiting mark and a trigger mechanism, wherein the trigger mechanism adopts a stealth anti-counterfeiting mark trigger mechanism according to any one of claims 1 to 9; the stealth anti-counterfeiting mark is made visible by triggering the trigger mechanism.

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