Optically variable anti-counterfeiting element
By setting concave and convex structures and receiving antenna layers on the anti-counterfeiting information layer, and utilizing diffraction phenomena to achieve various color and dynamic pattern transformation effects, the problem of high manufacturing costs in existing technologies is solved, and the concealment and anti-counterfeiting difficulty of the anti-counterfeiting element are improved.
Patent Information
- Application Number
- CN202511178330.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-06
- Publication Date
- 2025-11-07
AI Technical Summary
Existing anti-counterfeiting components require the addition of an angle-dependent color-changing layer to achieve various luminous effects, which increases the manufacturing cost.
By setting a concave-convex structure on the anti-counterfeiting information layer, the diffraction phenomenon is used to achieve various color or dynamic pattern changes under different viewing angles, replacing the traditional angle-dependent color-changing layer. Combined with the light-emitting layer and the receiving antenna layer, an induced current is generated to make the light-emitting layer emit light, and the concealment is increased under natural light.
It reduces manufacturing costs while improving the concealment and anti-counterfeiting difficulty of anti-counterfeiting elements, and achieves display effects with multiple colors and dynamic patterns.
Smart Images
Figure CN120913489A_ABST
Abstract
Description
[0001] This application is a divisional application of the Chinese Patent Application No. 202310660531.2, filed on June 6, 2023, entitled “Anti-fake Element”, the whole content of which is incorporated herein by reference. TECHNICAL FIELD
[0002] The present application relates to the technical field of anti-fake technology, in particular to an anti-fake element. BACKGROUND
[0003] In order to achieve multiple light-emitting effects, the existing anti-fake elements usually add an angle-dependent color change layer during the preparation of the anti-fake element, which increases the preparation cost.
[0004] Therefore, in order to reduce the preparation cost, it is a technical problem to be solved at present to invent an anti-fake element which can achieve the effect of angle-dependent color change without adding an angle-dependent color change layer. SUMMARY
[0005] The present application aims to solve or improve at least one of the above technical problems.
[0006] The technical solution of the present application is to provide an anti-fake element.
[0007] The anti-fake element provided by the present application comprises: a substrate layer; an anti-fake information layer arranged on one side of the substrate layer, the anti-fake information layer being capable of emitting light to display anti-fake information after receiving a radio wave signal; and a concave-convex structure arranged on the surface of the side of the anti-fake information layer away from the substrate layer, the concave-convex structure being capable of causing the light emitted by the anti-fake information layer to have a diffraction phenomenon when the anti-fake information layer emits light.
[0008] The diffraction phenomenon includes that the anti-fake information can present different color light-emitting effects, or present multiple color light-emitting effects alternately changing, or present dynamic pattern changing effects when the anti-fake information is observed from different observation angles.
[0009] The anti-counterfeiting element provided by the application comprises a substrate layer, an anti-counterfeiting information layer and a concave-convex structure, the substrate layer is attached to the surface of an anti-counterfeiting article, the anti-counterfeiting information layer is arranged on one side of the substrate layer, for example, on the side away from the anti-counterfeiting article, the anti-counterfeiting information layer can emit light and display anti-counterfeiting information after receiving a radio wave signal, and the concave-convex structure is arranged on the anti-counterfeiting information layer, for example, on the side of the anti-counterfeiting information layer away from the substrate layer, the concave-convex structure can cause the light emitted by the anti-counterfeiting information layer to diffract when the anti-counterfeiting information layer emits light, so that the anti-counterfeiting information can present different color light-emitting effects or present light-emitting effects of multiple colors alternatingly changing or present dynamic pattern changing effects when the anti-counterfeiting information is observed from different observation angles. The anti-counterfeiting element provided by the application can cause the light emitted by the anti-counterfeiting information layer to diffract by arranging the concave-convex structure on the anti-counterfeiting information layer, so that the user can obtain different color light-emitting effects when observing from different observation angles. The concave-convex structure replaces the traditional angle-dependent color-changing layer, which not only reduces the preparation cost, but also increases the difficulty of copying the anti-counterfeiting element.
[0010] In the above technical solution, the shape of the concave-convex structure comprises one of a sine wave, a square wave and a sawtooth shape.
[0011] In the above technical solution, the anti-counterfeiting information layer comprises a light-emitting layer arranged on one side of the substrate layer, the light-emitting layer can emit light to display anti-counterfeiting information after being electrified, a receiving antenna layer connected with the light-emitting layer, the receiving antenna layer is used for receiving a radio wave signal to generate an induced current to electrify the light-emitting layer to emit light, and the surfaces of the light-emitting layer and the receiving antenna layer away from the substrate layer are each provided with a concave-convex structure.
[0012] In the above technical solution, the anti-counterfeiting information layer comprises a light-emitting layer and a receiving antenna layer, the light-emitting layer is arranged on one side of the substrate layer, for example, on the side away from the anti-counterfeiting article, the light-emitting layer can emit light and display anti-counterfeiting information after being electrified, and the receiving antenna layer is connected with the light-emitting layer, the receiving antenna layer is used for receiving a radio wave signal to generate an induced current to electrify the light-emitting layer to emit light. By arranging the light-emitting layer and the receiving antenna layer, an induced current can be generated in the receiving antenna layer by using the principle of magnetic generation of electricity, so that the light-emitting layer is electrified and emits light, and the concealment of the anti-counterfeiting element is improved.
[0013] In the above technical solution, under natural light irradiation, the concave-convex structure can also cause the light reflected by the receiving antenna layer to diffract.
[0014] In the above technical solution, under natural light irradiation, the concave-convex structure can also cause the light reflected by the receiving antenna layer to diffract, so that the receiving antenna layer of the application is more difficult to be found under normal circumstances, and the concealment of the anti-counterfeiting element is improved.
[0015] In the technical scheme, the receiving antenna layer comprises receiving antennas, the line width of the receiving antennas is greater than or equal to 400 μm and less than or equal to 600 μm, and the line spacing of the receiving antennas is greater than or equal to 50 μm and less than or equal to 100 μm.
[0016] In the technical scheme, the concave-convex structure can cause diffraction of the light reflected by the receiving antenna layer, and the line width and the line spacing of the receiving antennas can be controlled to achieve the best hiding effect, and the receiving antennas of the application are difficult to be found without careful observation.
[0017] Further, the receiving antennas can be wireless charging receiving antennas or NFC (Near-Field-Communication, near field communication) receiving antennas.
[0018] In the technical scheme, the receiving antenna layer comprises wireless charging receiving antennas, and the anti-counterfeiting element further comprises a wireless charging chip connected with the wireless charging receiving antennas, configured to transmit a low-frequency alternating pre-signal to the wireless charging receiving antennas at a wireless charging signal transmitting end, and transmit a matching success signal to the wireless charging signal transmitting end when the wireless charging receiving antennas receive the low-frequency alternating pre-signal, so that the wireless charging signal transmitting end can continuously transmit radio waves to the wireless charging receiving antennas after receiving the matching success signal, so that the light-emitting layer continuously emits light to display the anti-counterfeiting information.
[0019] In the technical scheme, when the receiving antenna layer is configured as a wireless charging receiving antenna, the anti-counterfeiting element further comprises a wireless charging chip connected with the wireless charging receiving antennas, and the wireless charging chip can transmit a matching success signal to the wireless charging signal transmitting end when the wireless charging signal transmitting end transmits a low-frequency alternating pre-signal to the wireless charging receiving antennas. After the wireless charging signal transmitting end receives the matching success signal fed back by the wireless charging chip, the wireless charging signal transmitting end can continuously transmit radio waves (usually at 100 KHz to 205 KHz) to the wireless charging receiving antennas to make the light-emitting layer continuously display the anti-counterfeiting information. By arranging the wireless charging chip, the wireless charging chip can feed back signals to the mobile phone when the user performs wireless charging on the mobile phone, so that the mobile phone can timely perceive the wireless charging receiving antennas, and the wireless charging signal transmitting end can continuously transmit radio waves to the wireless charging receiving antennas, so that the light-emitting layer continuously displays the anti-counterfeiting information, avoiding the problem that the mobile phone cannot detect the wireless charging receiving antennas and automatically closes the function of transmitting radio waves, resulting in the problem that the wireless charging receiving antennas cannot continuously receive radio waves.
[0020] In the technical solution, the light-emitting layer comprises: a first electrode layer and a second electrode layer, both of which are arranged on one side of the substrate layer; a flexible display element, which can emit light in an energized state to display anti-counterfeiting information; two ends of the flexible display element are connected with the first electrode layer and the second electrode layer respectively; and two ends of the receiving antenna layer are connected with the first electrode layer and the second electrode layer respectively.
[0021] In the technical solution, the light-emitting layer comprises: a first electrode layer and a second electrode layer, both of which are arranged on one side of the substrate layer; a flexible display element, which can emit light in an energized state to display anti-counterfeiting information; two ends of the flexible display element are connected with the first electrode layer and the second electrode layer respectively; and two ends of the receiving antenna layer are connected with the first electrode layer and the second electrode layer respectively.
[0022] In the technical solution, the receiving antenna layer and the first electrode layer are in an integrated structure, and the receiving antenna layer and the second electrode layer are in an integrated structure.
[0023] In the technical solution, the receiving antenna layer and the first electrode layer are in an integrated structure, and the receiving antenna layer and the second electrode layer are in an integrated structure, which can improve the conduction efficiency in the closed loop, and also simplify the preparation process and improve the product preparation efficiency. Of course, the receiving antenna layer and the first electrode layer can also be in a split structure, and the receiving antenna layer and the second electrode layer can also be in a split structure.
[0024] In the technical solution, the flexible display element comprises one of: a flexible organic electroluminescent element, a flexible inorganic electroluminescent element, and a flexible electrochromic element.
[0025] In the technical solution, the flexible display element comprises one of: a flexible organic electroluminescent element, a flexible inorganic electroluminescent element, and a flexible electrochromic element, which can make the anti-counterfeiting element of the present application display diversified anti-counterfeiting information such as multiple colors, multiple images, and dynamic patterns when displaying anti-counterfeiting information.
[0026] In the technical solution, the receiving antenna layer comprises an NFC (Near-Field-Communication) receiving antenna, and the anti-counterfeiting element further comprises: an NFC rectifier chip connected with the NFC receiving antenna, which is used to convert the high-frequency alternating current signal received by the NFC receiving antenna into a direct current signal, so that the light-emitting layer is energized and emits light to display anti-counterfeiting information.
[0027] In the technical solution, when the receiving antenna layer is set as an NFC receiving antenna, the anti-fake element further comprises an NFC rectifier chip connected with the NFC receiving antenna, for converting the high-frequency alternating current signal (usually at 13.56 MHz) received by the NFC receiving antenna into a direct current signal, so that the flexible display element of the anti-fake element of the application can adopt an OLED (Organic Light-Emitting Diode) light-emitting element, solving the problem that the OLED light-emitting element cannot emit light under an alternating current signal when the OLED light-emitting element is used as the flexible display element, and enabling the anti-fake element of the application to generate diversified anti-fake information such as multiple colors, multiple images, and dynamic patterns when displaying anti-fake information.
[0028] In the above technical solution, the anti-fake element further comprises an interference layer connected with the receiving antenna layer, and a preset pattern is arranged on the interference layer, the preset pattern being the same as or different from the pattern on the receiving antenna layer, and the preset pattern being used for interfering with the pattern on the receiving antenna layer.
[0029] In the technical solution, the anti-fake element further comprises an interference layer, and a preset pattern is arranged on the interference layer, the preset pattern being the same as or different from the pattern of the receiving antenna layer, so that the receiving antenna pattern can be interfered with by the preset pattern, and the concealment of the receiving antenna pattern is enhanced.
[0030] In the above technical solution, the shape of the receiving antenna layer comprises one of a spiral shape, a T shape, a V shape, and a diamond shape.
[0031] In the technical solution, the shape of the receiving antenna layer can be a standard geometric shape, such as a rectangle, a square, a diamond, a triangle, etc., can be a non-standard special-shaped antenna, such as a spiral shape, or can be a shape of a letter, such as a T shape, a V shape, an S shape, an M shape, etc.
[0032] In the above technical solution, when the shape of the concave-convex structure is a square wave shape, the concave-convex structure comprises a convex part and a concave part, the width of the convex part is greater than or equal to 0.1 μm and less than or equal to 10 μm, and the width of the concave part is greater than or equal to 0.1 μm and less than or equal to 10 μm.
[0033] In the above technical solution, when the shape of the concave-convex structure is one of a sine wave shape or a sawtooth shape, the distance between two adjacent vertices on the concave-convex structure is greater than or equal to 0.2 μm and less than or equal to 20 μm, wherein the vertex is a point on the concave-convex structure farthest from the substrate layer.
[0034] In the technical solution, limiting the specific size of the concave-convex structure can ensure the light diffraction effect.
[0035] In the above technical solution, the anti-fake information layers are arranged at intervals on the surface of the substrate layer.
[0036] In the technical solution, the anti-fake information layer is arranged on the surface of the substrate layer, and the concave-convex structure is arranged on the surface of the anti-fake information layer away from the substrate layer, so that the anti-fake information can present different color light-emitting effects and is not easy to be found, and in the actual detection process, for example, the anti-fake information can be distinguished by means of a magnifying glass and is not easy to be found by an opponent.
[0037] In the above technical solution, the anti-fake element further comprises a glue layer arranged between the substrate layer and the anti-fake information layer.
[0038] In the technical solution, the anti-fake element further comprises a glue layer arranged between the substrate layer and the anti-fake information layer, and used for fixing the anti-fake information layer on the surface of the substrate layer.
[0039] In the above technical solution, the thickness of the receiving antenna layer is greater than 50 nm.
[0040] In the technical solution, the thickness of the receiving antenna layer is greater than 50 nm, further greater than 100 nm, and more further greater than 200 nm, so that the intensity of the current in the closed loop can be ensured, and then the light-emitting intensity of the flexible display element is ensured, and the problem that the anti-fake information cannot be detected in the later detection process due to low light-emitting intensity is avoided.
[0041] In the above technical solution, the square resistance of the receiving antenna layer is less than 0.5 Ω.
[0042] In the technical solution, the square resistance of the receiving antenna layer is less than 0.5 Ω, further less than 0.1 Ω, and more further less than 0.05 Ω, so that the square resistance of the receiving antenna layer is prevented from being too large, the intensity of the current in the closed loop is ensured, and the light-emitting intensity of the flexible display element is ensured.
[0043] In the above technical solution, the material of the receiving antenna layer is composed of a metal or a metal compound with conductive properties, and the reflectivity of the metal or the metal compound is greater than or equal to 80%.
[0044] In the technical solution, the material of the receiving antenna layer is composed of a metal or a metal compound with conductive properties, and the reflectivity of the metal or the metal compound is greater than or equal to 80%, for example, the material of the receiving antenna layer can be composed of gold, silver, copper, magnesium, aluminum, lithium or other metals or metal compounds with bright mirror reflection effect and other conductive materials, and further, the receiving antenna layer can be one layer or multiple layers.
[0045] In the above technical solution, the metal material of the first electrode layer is the same as or different from the metal material of the receiving antenna layer, and the metal material of the second electrode layer is the same as or different from the metal material of the receiving antenna layer.
[0046] In the technical solution, the metal material of the first electrode layer is the same as the metal material of the receiving antenna layer, so that the preparation efficiency can be improved, and the same material can also ensure the conductive efficiency and improve the luminous intensity. Of course, the metal material of the first electrode layer and the metal material of the receiving antenna layer can also be different according to different needs. The metal material of the second electrode layer and the metal material of the receiving antenna layer can also be set to the same material or different materials according to needs.
[0047] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS
[0048] The above and / or additional aspects and advantages of embodiments of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 A structure diagram of an anti-counterfeiting element provided by an embodiment of the present application is shown; Figure 2 A structure diagram of an anti-counterfeiting information layer of an anti-counterfeiting element provided by an embodiment of the present application is shown; Figure 3 One of effect diagrams of a receiving antenna layer of an anti-counterfeiting element provided by an embodiment of the present application is shown; Figure 4 The second of effect diagrams of a receiving antenna layer of an anti-counterfeiting element provided by an embodiment of the present application is shown; Figure 5 One of structure diagrams of a receiving antenna layer and an interference layer of an anti-counterfeiting element provided by an embodiment of the present application is shown; Figure 6 The second of structure diagrams of a receiving antenna layer and an interference layer of an anti-counterfeiting element provided by an embodiment of the present application is shown.
[0049] In which, Figure 1 , Figure 2 , Figure 5 and Figure 6 The correspondence between the reference signs and the component names in the drawings is as follows: 1 anti-counterfeiting element, 12 base material layer, 14 adhesive layer, 16 anti-counterfeiting information layer, 162 light-emitting layer, 1622 first electrode layer, 1624 second electrode layer, 1626 flexible display element, 164 receiving antenna layer, 18 concave-convex structure, 19 interference layer. DETAILED DESCRIPTION
[0050] In order to enable a more clear understanding of the above aspects, features and advantages of the embodiments according to the present application, the embodiments according to the present application are further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0051] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the embodiments according to the present application, however, the embodiments according to the present application can also be implemented in other manners different from those described herein, therefore, the protection scope of the embodiments according to the present application is not limited by the specific embodiments disclosed below.
[0052] As shown in the Figure 1 embodiment, the anti-counterfeiting element 1 provided by the embodiment includes a substrate layer 12, an anti-counterfeiting information layer 16 and a concave-convex structure 18, the substrate layer 12 is attached to the surface of an anti-counterfeiting article, the anti-counterfeiting information layer 16 is arranged on one side of the substrate layer 12, for example, on the side away from the anti-counterfeiting article, the anti-counterfeiting information layer 16 can emit light and display anti-counterfeiting information after receiving a radio wave signal, the concave-convex structure 18 is arranged on the anti-counterfeiting information layer 16, for example, on the side of the anti-counterfeiting information layer 16 away from the substrate layer 12, the concave-convex structure 18 can cause the light emitted by the anti-counterfeiting information layer 16 to diffract when the anti-counterfeiting information layer 16 emits light, so that the anti-counterfeiting information can present different color light-emitting effects or present light-emitting effects of multiple colors alternately changing or present dynamic pattern changing effects when the anti-counterfeiting information is observed from different observation angles.
[0053] The anti-counterfeiting element 1 provided by the present application can cause the light emitted by the anti-counterfeiting information layer 16 to diffract by arranging the concave-convex structure 18 on the anti-counterfeiting information layer 16, so that the user can obtain different color light-emitting effects when observing from different observation angles, and the concave-convex structure 18 replaces the traditional angle-dependent color-changing layer, which not only reduces the preparation cost, but also increases the difficulty of copying the anti-counterfeiting element 1.
[0054] In the above embodiment, the shape of the concave-convex structure 18 includes one of a sine wave shape, a square wave shape and a sawtooth shape.
[0055] In the above embodiment, as shown in the Figure 2 embodiment, the anti-counterfeiting information layer 16 includes a light-emitting layer 162 and a receiving antenna layer 164, the light-emitting layer 162 is arranged on one side of the substrate layer 12, and the light-emitting layer 162 can emit light after being electrified to display anti-counterfeiting information; the receiving antenna layer 164 is connected with the light-emitting layer 162, and the receiving antenna layer 164 is used to receive a radio wave signal to generate induced current to electrify the light-emitting layer 162 to emit light; the surfaces of the light-emitting layer 162 and the receiving antenna layer 164 away from the substrate layer 12 are both provided with the concave-convex structure.
[0056] In this embodiment, the anti-counterfeiting information layer 16 comprises a light-emitting layer 162 and a receiving antenna layer 164, the light-emitting layer 162 is arranged on one side of the substrate layer 12, for example, the side away from the anti-counterfeiting article, the light-emitting layer 162 can emit light and display anti-counterfeiting information after being electrified, the receiving antenna layer 164 is connected with the light-emitting layer 162, and the receiving antenna layer 164 is used for receiving radio wave signals to generate induced current to electrify the light-emitting layer 162 to emit light. By arranging the light-emitting layer 162 and the receiving antenna layer 164, the induced current can be generated inside the receiving antenna layer 164 by using the principle of magnetic generation of electricity, so that the light-emitting layer 162 is electrified and emits light, and the concealment of the anti-counterfeiting element 1 is improved.
[0057] In the above embodiment, under natural light irradiation, the concave-convex structure 18 can also cause the light reflected by the receiving antenna layer 164 to have a diffraction phenomenon.
[0058] In this embodiment, under natural light irradiation, the concave-convex structure 18 can also cause the light reflected by the receiving antenna layer 164 to have a diffraction phenomenon, so that the receiving antenna layer 164 of the present application is more difficult to be found under normal circumstances, and the concealment of the anti-counterfeiting element 1 is improved.
[0059] In the above embodiment, the receiving antenna layer 164 comprises a receiving antenna, the line width of the receiving antenna is greater than or equal to 400 μm and less than or equal to 600 μm, and the line spacing of the receiving antenna is greater than or equal to 50 μm and less than or equal to 100 μm.
[0060] In this embodiment, since the concave-convex structure 18 can cause the light reflected by the receiving antenna layer 164 to have a diffraction phenomenon, the best hiding effect can be achieved by controlling the line width and the line spacing of the receiving antenna, and the receiving antenna of the present application is difficult to be found without careful observation. The specific hiding effect diagram is shown in Figure 3 and Figure 4 According to the effect diagrams of Figure 3 and Figure 4 It can be clearly seen that the receiving antenna has some high-light spots, and these high-light spots are the diffraction phenomenon of the concave-convex structure 18. Compared with the receiving antenna without the diffraction phenomenon of Figure 5 and Figure 6 , the receiving antenna with the diffraction phenomenon has better hiding effect.
[0061] Further, the receiving antenna can be a standard grid-shaped receiving antenna as shown in Figure 5 , or can be a receiving antenna as shown in Figure 6The shown flower petal-shaped receiving antenna further has a line width of 500 μm, a line spacing of 100 μm, and 16 turns. Of course, according to different requirements, the receiving antenna can be provided with various other shapes of standard shapes or other shapes of irregular shapes, and the line width, line spacing, and number of turns can be adjusted according to different shapes. Here, no further elaboration is made.
[0062] In the above embodiment, the receiving antenna layer 164 comprises a wireless charging receiving antenna, and the anti-counterfeiting element 1 further comprises a wireless charging chip connected with the wireless charging receiving antenna, for transmitting a low-frequency alternating pre-signal to the wireless charging receiving antenna at a wireless charging signal transmitting end, and transmitting a matching success signal to the wireless charging signal transmitting end when the wireless charging receiving antenna receives the low-frequency alternating pre-signal, so that the wireless charging signal transmitting end can continuously transmit radio waves to the wireless charging receiving antenna after receiving the matching success signal, so that the light-emitting layer 162 continuously emits light to display the anti-counterfeiting information.
[0063] In this embodiment, when the receiving antenna layer 164 is configured as a wireless charging receiving antenna, the anti-counterfeiting element 1 further comprises a wireless charging chip connected with the wireless charging receiving antenna, which can transmit a matching success signal to the wireless charging signal transmitting end when the wireless charging signal transmitting end transmits a low-frequency alternating pre-signal to the wireless charging receiving antenna. After the wireless charging signal transmitting end receives the matching success signal fed back by the wireless charging chip, it can continuously transmit radio waves (usually at 100 KHz to 205 KHz) to the wireless charging receiving antenna, so that the light-emitting layer 162 continuously displays the anti-counterfeiting information. By providing the wireless charging chip, the user can perform wireless charging on the mobile phone end, and the wireless charging chip can feed back signals to the mobile phone end, so that the mobile phone end can timely perceive the wireless charging receiving antenna. Thus, the mobile phone end can continuously transmit radio waves to the wireless charging receiving antenna, so that the light-emitting layer 162 continuously displays the anti-counterfeiting information, avoiding the problem that the mobile phone end cannot detect the wireless charging receiving antenna and automatically turn off the function of transmitting radio waves, resulting in the inability to continuously transmit radio waves to the wireless charging receiving antenna.
[0064] In the above embodiment, as Figure 2 shown, the light-emitting layer 162 comprises a first electrode layer 1622, a second electrode layer 1624, and a flexible display element 1626: the first electrode layer 1622 and the second electrode layer 1624 are both arranged on one side of the substrate layer 12; the flexible display element 1626 can emit light in a powered state to display the anti-counterfeiting information; the two ends of the flexible display element 1626 are respectively connected with the first electrode layer 1622 and the second electrode layer 1624; and the two ends of the receiving antenna layer 164 are respectively connected with the first electrode layer 1622 and the second electrode layer 1624.
[0065] In the embodiment, the light-emitting layer 162 comprises a first electrode layer 1622, a second electrode layer 1624, and a flexible display element 1626 capable of emitting light in a powered state to display anti-counterfeiting information, two ends of the flexible display element 1626 being connected to the first electrode layer 1622 and the second electrode layer 1624 respectively, and two ends of the receiving antenna layer 164 being connected to the first electrode layer 1622 and the second electrode layer 1624 respectively, so as to form a closed loop with the first electrode layer 1622, the second electrode layer 1624, the flexible display element 1626, and the receiving antenna layer 164. When the receiving antenna layer 164 receives a radio wave signal and generates an induced current, the induced current flows in the closed loop, and the flexible display element 1626 emits light and generates anti-counterfeiting information.
[0066] In the above embodiment, the receiving antenna layer 164 and the first electrode layer 1622 are in an integrated structure, and the receiving antenna layer 164 and the second electrode layer 1624 are in an integrated structure.
[0067] In the embodiment, the receiving antenna layer 164 and the first electrode layer 1622 are in an integrated structure, and the receiving antenna layer 164 and the second electrode layer 1624 are in an integrated structure, so as to improve the conduction efficiency in the closed loop, and simplify the preparation process and improve the product preparation efficiency. Of course, the receiving antenna layer 164 and the first electrode layer 1622 can also be in a split structure, and the receiving antenna layer 164 and the second electrode layer 1624 can also be in a split structure.
[0068] In the above embodiment, the flexible display element 1626 comprises one of a flexible organic electroluminescent element, a flexible inorganic electroluminescent element, and a flexible electrochromic element.
[0069] In the embodiment, the flexible display element 1626 comprises one of a flexible organic electroluminescent element, a flexible inorganic electroluminescent element, and a flexible electrochromic element, so as to enable the anti-counterfeiting element 1 to generate diversified anti-counterfeiting information such as multiple colors, multiple images, and dynamic patterns when displaying anti-counterfeiting information.
[0070] In the above embodiment, the receiving antenna layer 164 comprises an NFC receiving antenna, and the anti-counterfeiting element 1 further comprises an NFC rectifier chip connected to the NFC receiving antenna, for converting a high-frequency alternating current signal received by the NFC receiving antenna into a direct current signal, so as to power the light-emitting layer 162 and make it emit light to display anti-counterfeiting information.
[0071] In this embodiment, when the receiving antenna layer 164 is configured as an NFC (Near Field Communication) receiving antenna, the anti-counterfeiting element 1 also includes an NFC rectifier chip. The NFC rectifier chip is connected to the NFC receiving antenna and is used to convert the high-frequency AC signal (typically at 13.56MHz) received by the NFC receiving antenna into a DC signal. This allows the flexible display element 1626 of the anti-counterfeiting element 1 of this application to use an OLED light-emitting element, solving the problem that the OLED light-emitting element cannot emit light under AC signals when using an OLED light-emitting element as the flexible display element 1626. This enables the anti-counterfeiting element 1 of this application to generate a variety of anti-counterfeiting information such as multiple colors, multiple images, and dynamic patterns when displaying anti-counterfeiting information.
[0072] In the above embodiment, the anti-counterfeiting element 1 further includes an interference layer 19 connected to the receiving antenna layer 164. The interference layer 19 is provided with a preset pattern, which may be the same as or different from the pattern on the receiving antenna layer 164. The preset pattern is used to interfere with the pattern on the receiving antenna layer 164.
[0073] In this embodiment, the anti-counterfeiting element 1 also includes an interference layer 19, on which a preset pattern is provided. The preset pattern may be the same as or different from the pattern of the receiving antenna layer 164. In this way, the receiving antenna pattern can be interfered with by the preset pattern, thereby enhancing the concealment of the receiving antenna pattern.
[0074] For example, such as Figure 5 The grid-shaped receiving antenna layer 164 shown has a U-shaped interference layer 19 embedded within the receiving antenna coil. For example, ... Figure 6 The structural diagram shown is divided into two parts: the flower bud part is the receiving antenna layer 164, which includes multiple receiving antennas, and the stem and sepals part is the interference layer 19. That is, the receiving antenna layer 164 and the interference layer 19 together form a flower structure. In this way, only one flower structure can be seen when not looking closely, which has a partial hiding effect on the receiving antenna layer 164, thereby improving concealment. The position and pattern of the interference layer 19 can also be arbitrarily set according to actual needs.
[0075] In the above embodiments, the shape of the receiving antenna layer 164 includes one of the following: spiral, T-shaped, V-shaped, and rhomboid.
[0076] In this embodiment, the shape of the receiving antenna layer 164 can be a standard geometric shape, such as a rectangle, square, rhombus, triangle, etc., or it can be a non-standard irregular antenna, such as a spiral, or it can be the shape of a letter, such as a T-shape, V-shape, S-shape, M-shape, etc.
[0077] In the above embodiment, when the shape of the concave-convex structure 18 is a square wave shape, the concave-convex structure 18 includes convex portions and concave portions, the width of the convex portions is greater than or equal to 0.1 μm and less than or equal to 10 μm, and the width of the concave portions is greater than or equal to 0.1 μm and less than or equal to 10 μm.
[0078] In the above embodiment, when the shape of the concave-convex structure 18 is one of a sine wave shape and a sawtooth shape, the distance between two adjacent vertices on the concave-convex structure 18 is greater than or equal to 0.2 μm and less than or equal to 20 μm, wherein the vertex is a point on the concave-convex structure 18 farthest from the substrate layer 12.
[0079] In this embodiment, limiting the specific size of the concave-convex structure 18 can ensure the diffraction effect of light.
[0080] In the above embodiment, the anti-fake information layer 16 is arranged on the surface of the substrate layer 12.
[0081] In this embodiment, the anti-fake information layer 16 is arranged on the surface of the substrate layer 12, and the concave-convex structure 18 is arranged on the surface of the anti-fake information layer 16 away from the substrate layer 12, so that the anti-fake information can present different color light-emitting effects and is not easy to be found, so that in the actual detection process, for example, it can be distinguished by means of a magnifying glass, and it will not be easily detected by the opponent.
[0082] In the above embodiment, the anti-fake element 1 further includes a glue layer 14 arranged between the substrate layer 12 and the anti-fake information layer 16.
[0083] In this embodiment, the anti-fake element 1 further includes a glue layer 14 arranged between the substrate layer 12 and the anti-fake information layer 16, for fixing the anti-fake information layer 16 on the surface of the substrate layer 12.
[0084] In the above embodiment, the thickness of the receiving antenna layer 164 is greater than 50 nm.
[0085] In this embodiment, the thickness of the receiving antenna layer 164 is greater than 50 nm, further greater than 100 nm, and further greater than 200 nm, so that the intensity of the current in the closed loop can be ensured, and the light-emitting intensity of the flexible display element 1626 is ensured, avoiding the problem that the light-emitting intensity is low and the anti-fake information cannot be detected in the later detection process.
[0086] In the above embodiment, the square resistance of the receiving antenna layer 164 is less than 0.5 Ω.
[0087] In this embodiment, the square resistance of the receiving antenna layer 164 is less than 0.5 Ω, further less than 0.1 Ω, and further less than 0.05 Ω, so that the square resistance of the receiving antenna layer 164 can be avoided to be too large, the intensity of the current in the closed loop is ensured, and the light-emitting intensity of the flexible display element 1626 is ensured.
[0088] In the above embodiment, the material of the receiving antenna layer 164 is composed of metal or metal compound with conductive performance, and the reflectivity of the metal or metal compound is greater than or equal to 80%.
[0089] In the above embodiment, the material of the receiving antenna layer 164 is composed of metal or metal compound with conductive performance, and the reflectivity of the metal or metal compound is greater than or equal to 80%. For example, the material of the receiving antenna layer 164 can be gold, silver, copper, magnesium, aluminum, lithium or other metal or metal compound with bright mirror reflection effect, or other conductive material. In addition, the receiving antenna layer 164 can be one layer or multiple layers.
[0090] In the above embodiment, the metal material of the first electrode layer 1622 and the metal material of the receiving antenna layer 164 are the same or different, and the metal material of the second electrode layer 1624 and the metal material of the receiving antenna layer 164 are the same or different.
[0091] In the above embodiment, the metal material of the first electrode layer 1622 and the metal material of the receiving antenna layer 164 are the same, which can improve the preparation efficiency, and the same material can also ensure the conductive efficiency and improve the luminous intensity. Of course, according to different needs, the metal material of the first electrode layer 1622 and the metal material of the receiving antenna layer 164 can also be different. The metal material of the second electrode layer 1624 and the metal material of the receiving antenna layer 164 can also be set to the same material or different material according to the needs.
[0092] In another embodiment of the present application, a light variable anti-counterfeiting element 1 is provided, which at least includes a substrate layer 12, a glue layer 14 and a metal layer. The substrate layer 12 is a transparent substrate, the glue layer 14 is a transparent glue layer 14, the transparent glue layer 14 is arranged above the transparent substrate, and the metal layer is arranged above the transparent glue layer 14. The metal layer is composed of three metal regions and a hollow region. At least part of the first metal region of the metal layer forms an antenna pattern, that is, a receiving antenna layer 164. The upper surface of the transparent glue layer 14 has a concave-convex structure 18, and the upper surface of the receiving antenna layer 164 has the same concave-convex structure 18 as the change rule of the transparent glue layer 14. The second metal region of the metal layer forms an electrode layer for conducting electricity of a flexible display element 1626. One of the electrode layers is connected with one end point of the receiving antenna layer 164 to form an electrode-antenna integrated structure, and the other electrode layer is connected with the other end point of the receiving antenna layer 164. The flexible display element 1626 is connected with the two electrode layers respectively.
[0093] In the above embodiment, the receiving antenna layer 164 further includes at least an NFC rectifier chip. When the antenna is an NFC receiving antenna (usually at 13.56 MHz ZWhen the NFC signal transmitting end transmits high-frequency alternating current signal to the NFC receiving antenna, the NFC rectifier chip converts the high-frequency alternating current signal received by the NFC receiving antenna into direct current signal, and supplies direct current to the flexible display element 1626, so that the flexible display element 1626 emits light or displays information.
[0094] In the above embodiment, the receiving antenna layer 164 further comprises at least a wireless charging chip. When the antenna is a wireless charging receiving antenna (usually at 100 KHz Z to 205 KHz Z When the antenna is a wireless charging receiving antenna (usually at 100 KHz
[0095] In the above embodiment, the anti-counterfeiting element 1 further comprises an interference layer 19 formed by the third metal region of the metal layer, which is similar to the common pattern of the receiving antenna layer 164, for interfering with the receiving antenna layer 164 and enhancing the concealment of the receiving antenna layer 164.
[0096] In the above embodiment, the receiving antenna layer 164 formed by the metal region of the metal layer comprises an NFC antenna, a wireless charging antenna, an RFID antenna (Radio-Frequency-Identification, i.e. frequency identification technology) and other radio wave receiving antennas that can be identified by radio wave transmitting devices.
[0097] In the above embodiment, the receiving antenna layer 164 of the metal layer is a spiral antenna, a T-shaped antenna, a V-shaped antenna, a diamond-shaped antenna and other special-shaped antennas.
[0098] In the above embodiment, the flexible display element 1626 comprises a flexible organic electroluminescent element, a flexible inorganic electroluminescent element, a flexible electrochromic element and the like.
[0099] In the above embodiment, the shape of the concave-convex structure 18 on the upper surface of the transparent adhesive layer 14 comprises a sine wave shape, a square wave shape, a sawtooth shape and other concave-convex shapes that can form diffractive light variation characteristics.
[0100] In the above embodiment, the concave-convex structure 18 on the upper surface of the first metal region of the metal layer comprises a sine wave shape, a square wave shape, a sawtooth shape and other concave-convex shapes that can form diffractive light variation characteristics.
[0101] In the above embodiments, the line width of the concave-convex structure 18 on the upper surface of the transparent adhesive layer 14 is between 0.1 μm and 10 μm, that is, when the shape of the concave-convex structure 18 is square wave, the concave-convex structure 18 includes convex portions and concave portions, the width of the convex portions is greater than or equal to 0.1 μm and less than or equal to 10 μm. Preferably, the width is between 0.5 μm and 5 μm, and more preferably, the width is between 0.8 μm and 1.5 μm. The line spacing is between 0.1 μm and 10 μm, that is, when the shape of the concave-convex structure 18 is square wave, the concave-convex structure 18 includes convex portions and concave portions, the width of the concave portions is greater than or equal to 0.1 μm and less than or equal to 10 μm. Preferably, the width is between 0.5 μm and 5 μm, and more preferably, the width is between 0.8 μm and 1.5 μm. The groove depth is between 0.1 μm and 10 μm, preferably, the groove depth is between 0.5 μm and 5 μm, and more preferably, the groove depth is between 0.8 μm and 1.5 μm. The depth of the concave-convex structure 18 is between 0.1 μm and 10 μm, preferably, the depth is between 0.5 μm and 5 μm, and more preferably, the depth is between 0.8 μm and 1.5 μm.
[0102] In the above embodiments, the thickness of the metal layer is greater than 50 nm, preferably, the thickness is greater than 100 nm, and more preferably, the thickness is greater than 200 nm.
[0103] In the above embodiments, the sheet resistance of the metal layer is less than 0.5 Ω, preferably, the sheet resistance is less than 0.1 Ω, and more preferably, the sheet resistance is less than 0.05 Ω.
[0104] In the above embodiments, the diffractive light variable feature includes a color change from one color to another color or a rainbow color effect with multiple color changes with the change of the observation angle, and the diffractive light variable feature also includes a depth of field and a dynamic pattern change effect.
[0105] In the above embodiments, the metal layer presents a metal color when viewed from the upper surface, and presents the same or different metal color when viewed from the lower surface.
[0106] In the above embodiments, the material of the receiving antenna layer 164 is composed of a metal or a metal compound with conductive properties, and the reflectivity of the metal or the metal compound is greater than or equal to 80%, for example, the material of the receiving antenna layer 164 can be composed of gold, silver, copper, magnesium, aluminum, lithium or other metals or metal compounds with bright mirror reflection effect, and the receiving antenna layer 164 can be one layer or multiple layers.
[0107] In the above embodiment, the metal material of the first electrode layer 1622 and the metal material of the receiving antenna layer 164 are the same, which can improve the preparation efficiency, and the same material can also ensure the conductivity efficiency and improve the luminous intensity. Of course, the metal material of the first electrode layer 1622 and the metal material of the receiving antenna layer 164 can also be different according to different needs. The metal material of the second electrode layer 1624 and the metal material of the receiving antenna layer 164 can also be set to the same material or different materials according to needs.
[0108] In the above embodiment, the substrate layer 12 and the adhesive layer 14 both have high transparency, and the transparency of the substrate layer 12 is greater than or equal to 80%, and the transparency of the adhesive layer 14 is greater than or equal to 80%.
[0109] In the embodiments according to the present application, the terms "first", "second", "third" are only used for descriptive aspects, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments according to the present application can be understood according to the specific circumstances.
[0110] In addition, although each operation is described in a specific order, it should be understood that the operations are required to be performed in the specific order or in a sequential order, or all the illustrated operations should be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing can be advantageous. Similarly, although several implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present application. Certain features described in the context of separate embodiments can also be combined in a single implementation. Conversely, various features described in the context of a single implementation can also be implemented separately or in any suitable subcombination.
[0111] Although the subject matter has been described in language specific to structural features and / or methodological acts, it is to be understood that the subject defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely exemplary forms of implementing the claims.
[0112] The above merely provides the preferred embodiments of the embodiments of the present application, but is not intended to limit the embodiments of the present application. For those skilled in the art, the embodiments of the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present application shall fall into the scope of protection of the embodiments of the present application.
Claims
1. An optically variable security device, characterized in that, The light variable anti-counterfeiting element comprises: a substrate layer, which is a transparent substrate layer; an anti-counterfeiting information layer arranged on one side of the substrate layer, the anti-counterfeiting information layer being capable of emitting light to display anti-counterfeiting information after receiving a radio wave signal; a glue layer arranged between the substrate layer and the anti-counterfeiting information layer, the glue layer being a transparent glue layer; a metal layer arranged above the transparent glue layer; wherein the surface of the anti-counterfeiting information layer away from the substrate layer is provided with a concave-convex structure, the concave-convex structure being capable of causing the light emitted by the anti-counterfeiting information layer to have a diffraction phenomenon when the anti-counterfeiting information layer emits light; the diffraction phenomenon including that the anti-counterfeiting information layer can present different color light-emitting effects or present a light-emitting effect with multiple colors alternately changing or present a dynamic pattern changing effect when the anti-counterfeiting information is observed from different observation angles; the anti-counterfeiting information layer comprising: a light-emitting layer arranged on one side of the substrate layer, the light-emitting layer being capable of emitting light to display the anti-counterfeiting information after being powered on; a receiving antenna layer connected with the light-emitting layer, the receiving antenna layer being used to receive a radio wave signal to generate an induced current to power on the light-emitting layer to emit light; the surface of the light-emitting layer and the receiving antenna layer away from the substrate layer is provided with the concave-convex structure; the receiving antenna layer comprising a wireless charging receiving antenna, the light variable anti-counterfeiting element further comprising: a wireless charging chip connected with the wireless charging receiving antenna, used to emit a low-frequency alternating pre-signal to the wireless charging receiving antenna from a wireless charging signal transmitting end, and used to emit a matching success signal to the wireless charging signal transmitting end when the wireless charging receiving antenna receives the low-frequency alternating pre-signal, so that the wireless charging signal transmitting end can continuously emit a radio wave to the wireless charging receiving antenna after receiving the matching success signal, so that the light-emitting layer is continuously powered on to emit light to display the anti-counterfeiting information; the material of the receiving antenna layer being composed of a metal or a metal compound having a conductive property, the reflectivity of the metal or the metal compound being greater than or equal to 80%.
2. The light variable anti-counterfeiting element according to claim 1, wherein the shape of the concave-convex structure comprises one of a sine wave, a square wave and a sawtooth shape.
3. The light variable anti-counterfeiting element according to claim 1, wherein under natural light irradiation, the concave-convex structure can also cause the light reflected by the receiving antenna layer to have a diffraction phenomenon.
4. An optically variable security device according to claim 3, wherein the first and second optically variable devices are arranged to be viewed simultaneously from the same side of the device. the receiving antenna layer comprises a receiving antenna; the line width of the receiving antenna is greater than or equal to 400 μm and less than or equal to 600 μm; the line spacing of the receiving antenna is greater than or equal to 50 μm and less than or equal to 100 μm.
5. An optically variable security device according to claim 1, wherein the light-emitting layer comprises: a first electrode layer and a second electrode layer, both arranged on one side of the substrate layer; a flexible display element, the flexible display element being capable of emitting light to display the anti-counterfeiting information in a powered-on state; the two ends of the flexible display element are connected with the first electrode layer and the second electrode layer, respectively; the two ends of the receiving antenna layer are connected with the first electrode layer and the second electrode layer, respectively.
6. The optically variable security element according to claim 5, characterized in that, the receiving antenna layer and the first electrode layer are in an integrated structure; and / or the receiving antenna layer and the second electrode layer are in an integrated structure; and / or the flexible display element comprises one of a flexible organic electroluminescent element, a flexible inorganic electroluminescent element, and a flexible electrochromic element.
7. An optically variable security device according to claim 1, wherein the receiving antenna layer comprises an NFC receiving antenna, and the optically variable security element further comprises: an NFC rectifier chip connected to the NFC receiving antenna, configured to convert an alternating current signal received by the NFC receiving antenna into a direct current signal, so as to cause the light-emitting layer to be electrified and emit light to display the security information.
8. An optically variable security device according to claim 1, wherein, further comprising: an interference layer connected to the receiving antenna layer, wherein the interference layer is provided with a preset pattern, and the preset pattern is the same as or different from the pattern on the receiving antenna layer, and the preset pattern is configured to interfere with the pattern on the receiving antenna layer.
9. The optically variable security element according to claim 1, characterized in that, when the shape of the concave-convex structure is a square wave shape, the concave-convex structure comprises a convex portion and a concave portion, the width of the convex portion is greater than or equal to 0.1 μm and less than or equal to 10 μm, and the width of the concave portion is greater than or equal to 0.1 μm and less than or equal to 10 μm; and / or when the shape of the concave-convex structure is one of a sine wave shape or a sawtooth shape, the distance between two adjacent vertices on the concave-convex structure is greater than or equal to 0.2 μm and less than or equal to 20 μm, wherein the vertex is a point on the concave-convex structure farthest from the substrate layer; and / or the security information layer is arranged on the surface of the substrate layer.
10. Optically variable security device according to any of claims 1 to 9, characterized in that the transparency of the substrate layer is greater than or equal to 80%, and the transparency of the adhesive layer is greater than or equal to 80%.