Security element

Abstract

The invention discloses an anti-fake element which at least comprises a base material layer, a first color developing layer and a second color developing layer at the same time in a partial area. In an XYZ coordinate system, the base material layer and the first color developing layer are both parallel to an XOY plane, the first color developing layer is formed on the first surface of the base material layer, the second color developing layer is formed on the surface, opposite to the base material layer, of the first color developing layer or the second surface of the base material layer, and the second surface and the first surface are oppositely arranged; a plurality of magnetic pigment sheets are arranged in the second color developing layer, an included angle between an intersection line formed by intersecting the planes of the pigment sheets and the XOZ plane and the forward direction of the X axis is A, and when observed in the forward direction of the X axis, the included angle A is changed from alpha to beta, or when observed in the forward direction of the X axis, the included angle A has a change trend of increasing or decreasing progressively within the range of alpha to beta; in a preset observation range, the second color developing layer and at least part of the first color developing layer can be observed at the same time on the side, back on to the first surface, of the second color developing layer. The anti-counterfeiting performance of the anti-counterfeiting element can be improved.

Description

Technical Field

[0001] The present invention relates to the field of anti-counterfeiting technology, and particularly to an anti-counterfeiting element. Background Art

[0002] As an anti-counterfeiting feature, an optically variable pattern can provide multiple patterns or a large color difference in the observation effect at multiple angles, enabling the public to accurately distinguish the original and the copy (or forgery) within a short time. Therefore, it is often widely used as a security element in banknotes, identification cards, or high-value-added documents.

[0003] Existing optically variable patterns use magnetically orientable magnetic pigment flakes. The magnetic pigment flakes are generally reflective microplanes with magnetism and color. Usually, when printing a pattern, the magnetic pigment flakes dispersed in a liquid medium are parallelly distributed in the plane of the substrate layer. When a magnetic field is applied to the liquid medium, the magnetic pigment flakes will rotate so that they can be inclined at a preset angle relative to the substrate layer.

[0004] Although there is an anti-counterfeiting element that uses magnetic pigment flakes, the observation effect is obtained by controlling the brightness and darkness of the same type of magnetic pigment flakes. Therefore, at the same observation angle, a multi-color anti-counterfeiting effect cannot be achieved. There is also an anti-counterfeiting element in which there is only one arrangement mode of the magnetic pigment flakes in the same layer, and the arrangement is too simple, resulting in poor anti-counterfeiting performance.

[0005] In view of the above deficiencies, it is necessary to design a new anti-counterfeiting element. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is that although existing anti-counterfeiting elements use magnetic pigment flakes, at the same observation angle, a multi-color anti-counterfeiting effect cannot be achieved, or there is only one arrangement mode of the magnetic pigment flakes in the same layer, and the arrangement is too simple, resulting in poor anti-counterfeiting performance. Thus, an anti-counterfeiting element is provided.

[0007] To solve the above technical problem, the technical solution of the present invention is as follows:

[0008] An anti-counterfeiting element, at least in part, simultaneously includes a substrate layer, a first color-developing layer, and a second color-developing layer; in the XYZ coordinate system, both the substrate layer and the first color-developing layer are parallel to the XOY plane, the first color-developing layer is formed on the first surface of the substrate layer, the second color-developing layer is formed on the surface of the first color-developing layer facing away from the substrate layer or on the second surface of the substrate layer, and the second surface is disposed opposite to the first surface; the second color-developing layer includes a plurality of magnetic pigment flakes, the plane of the pigment flakes intersects with the XOZ plane to form an intersection line, and the angle between the intersection line and the positive direction of the X axis is A. When observing along the positive direction of the X axis, the angle A changes from ɑ to β, or when observing along the positive direction of the X axis, the angle A shows an increasing or decreasing trend within the range of ɑ to β; within a preset observation range, the second color-developing layer and at least a part of the first color-developing layer can be simultaneously observed on the side of the second color-developing layer facing away from the first surface.

[0009] Further, both |90° - ɑ| and |90° - β| are from 30° to 60°, and 70° ≤ |ɑ - β| ≤ 110°.

[0010] Further, along the direction parallel to the X axis, the distance between the midpoints of the projection line segments of two adjacent magnetic pigment flakes on the first surface is L, the average angle between two adjacent magnetic pigment flakes and the positive direction of the X axis is θ, and the average size of two adjacent magnetic pigment flakes is D, and L = D×(1 ± 5%)|cosθ|.

[0011] Further, the size of the magnetic pigment flakes is from 5um to 100um, and / or the thickness of the magnetic pigment flakes is from 0.1um to 50um.

[0012] Further, the magnetic pigment flakes are planes with or without secondary structures.

[0013] Further, the secondary structure is a grating structure, and the size of the grating structure is at least one order of magnitude smaller than the size of the reflection surface of the magnetic pigment flakes.

[0014] Further, the period of the grating structure is from 0.2um to 5um.

[0015] Further, the colors of the second color-developing layer and the first color-developing layer are different.

[0016] Further, when the second color-developing layer is formed on the second surface, the substrate layer is made of a transparent material.

[0017] Further, when the second color-developing layer is formed on the surface of the first color-developing layer facing away from the substrate layer, the substrate layer is made of an opaque or transparent material.

[0018] Further, the first color display layer is a colored coating or magnetic pigment flakes.

[0019] Further, the first color display layer is provided with a pattern, and / or the second color display layer is provided with a pattern.

[0020] Further, when the anti-counterfeiting element is rotated about a rotation axis parallel to the Y axis, a pattern switching effect or a scroll bar effect is presented.

[0021] Further, the anti-counterfeiting element is used for anti-counterfeiting of banknotes or identity cards.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. The anti-counterfeiting element provided by the present invention includes at least a substrate layer, a first color display layer, and a second color display layer in at least some regions; in the XYZ coordinate system, both the substrate layer and the first color display layer are parallel to the XOY plane, the first color display layer is formed on the first surface of the substrate layer, the second color display layer is formed on the surface of the first color display layer facing away from the substrate layer or the second surface of the substrate layer, and the second surface is disposed opposite to the first surface; the second color display layer includes a plurality of magnetic pigment flakes, the plane of the pigment flakes intersects with the XOZ plane to form an intersection line, and the included angle between the intersection line and the positive direction of the X axis is A. When observed along the positive direction of the X axis, the included angle A changes from ɑ to β, or when observed along the positive direction of the X axis, the included angle A shows an increasing or decreasing trend within the range from ɑ to β; within a preset observation range, the second color display layer and at least a part of the first color display layer can be simultaneously observed on the side of the second color display layer facing away from the first surface, and thus a pattern can be seen, improving the anti-counterfeiting performance of the anti-counterfeiting element. In addition, there are at least two setting angles for the magnetic pigment flakes in the second color display layer, increasing the complexity of the arrangement, and thus improving the anti-counterfeiting performance.

[0024] 2. When the anti-counterfeiting element provided by the present invention is rotated about a rotation axis parallel to the Y axis, a pattern switching effect or a scroll bar effect is presented. In this way, the anti-counterfeiting visual effect can be further enriched, and finally the anti-counterfeiting performance of the anti-counterfeiting element is further improved.

[0025] 3. For the anti-counterfeiting element provided by the present invention, a pattern is provided on the first color display layer and / or the second color display layer. In this way, the observable visual pattern can be further enriched, and finally the anti-counterfeiting performance of the anti-counterfeiting element is further improved.

[0026] 4. For the anti-counterfeiting element provided by the present invention, both |90° - ɑ| and |90° - β| are from 30° to 60°, and 70° ≤ |ɑ - β| ≤ 110°, so as to ensure that the angle A is not too small or too large, so that the first color display layer can be seen through the gaps between adjacent magnetic pigment flakes.

[0027] 5. The anti-counterfeiting element provided by the present invention, along the direction parallel to the X-axis, the distance between the midpoints of the projection line segments of two adjacent magnetic pigment flakes on the first surface is L, the average angle between two adjacent magnetic pigment flakes and the positive direction of the X-axis is θ, and the average size of two adjacent magnetic pigment flakes is D. L = D×(1±5%)|cosθ|. In this way, sufficient gaps can be provided between adjacent magnetic pigment flakes so that the first color display layer can be seen through the gaps between adjacent magnetic pigment flakes. Brief Description of the Drawings

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the first embodiment of the anti-counterfeiting element of the present invention;

[0030] Figure 2 Simulation diagram of the distribution pattern of magnetic pigment flakes in the second color display layer of the present invention;

[0031] Figure 3 Schematic diagram of the second embodiment of the anti-counterfeiting element of the present invention;

[0032] Figure 4 Anti-counterfeiting image seen when observing along the first direction of the present invention;

[0033] Figure 5 Anti-counterfeiting image seen when observing along the second direction of the present invention;

[0034] Figure 6 Schematic diagram of the third embodiment of the anti-counterfeiting element of the present invention;

[0035] Figure 7 Schematic diagram of the fourth embodiment of the anti-counterfeiting element of the present invention;

[0036] Figure 8 Schematic diagram of the anti-counterfeiting pattern seen when observing along a certain direction when there is only one change trend in the angle of the present invention;

[0037] Figure 9 Schematic diagram of the anti-counterfeiting pattern seen when observing along a certain direction when there are two different change trends in the angle of the present invention. Detailed Description of the Invention

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] As Figures 1 to 9 shown, this embodiment provides an anti-counterfeiting element, which can be used for anti-counterfeiting of high-value items, such as banknotes (especially paper banknotes, polymer banknotes) or identification cards (such as credit cards, bank cards, cash cards, authorization cards, personal identification cards or personal pages of passports).

[0043] For the convenience of description, an XYZ coordinate system is first defined. The Z axis is parallel to the thickness direction of the anti-counterfeiting element. The following substrate layer and the first color-developing layer are both parallel to the XOY plane. The plane of the pigment sheet intersects with the XOZ plane to form an intersection line. The angle between the intersection line and the positive direction of the X axis is A. This part of the description and definition applies to the first to fourth methods.

[0044] Figure 1Schematic structural diagram of the first embodiment of the anti-counterfeiting element. The anti-counterfeiting element 1 includes a substrate layer 11 with a thickness of 15 μm to 30 μm. The substrate layer 11 can be made of a transparent material or an opaque material (such as cotton fiber paper). A first color-developing layer 12 with a thickness of 0.2 μm to 10 μm is provided on the first surface of the substrate layer 11. The first color-developing layer 12 is a colored pigment. A second color-developing layer 13 is provided above the first color-developing layer 12. The third color-developing layer 13 contains a plurality of magnetic pigment flakes 14. The distribution schematic diagram of the magnetic pigment flakes 14 is as shown in Figure 2 shown. Under the magnetic field of the magnetic orientation device, the magnetic pigment flakes 14 will be regionally oriented. The aforementioned angle A has two angles, and the angle A is ɑ or β. Specifically, when observing along the positive X-axis direction, the angle A changes from ɑ to β. The value range of α is 120° to 150°, and the value range of β is 30° to 60°. When the observer 151 observes along the first direction 15, the left side of the first color-developing layer 12 can be seen, while the right side of the first color-developing layer 12 is blocked by the magnetic pigment flakes 14. Therefore, only the pattern (if there is a pattern on the magnetic pigment flakes 14) or color of the magnetic pigment flakes 14 can be observed on the right side of the entire anti-counterfeiting element. The first color-developing layer 12 seen and the second color-developing layer 13 seen combine to form a first anti-counterfeiting pattern; when the observer 161 observes along the second direction 16, the right side of the first color-developing layer 12 can be seen, while the left side of the first color-developing layer 12 is blocked by the magnetic pigment flakes 14. Therefore, only the pattern (if there is a pattern on the magnetic pigment flakes 14) or color of the magnetic pigment flakes 14 can be observed on the left side of the entire anti-counterfeiting element. The first color-developing layer 12 seen and the second color-developing layer 13 seen combine to form a second anti-counterfeiting pattern. The first anti-counterfeiting pattern and the second anti-counterfeiting pattern are different. Therefore, when the anti-counterfeiting element is rotated along the rotation axis parallel to the Y-axis, the first anti-counterfeiting pattern and the second anti-counterfeiting pattern can be seen to have a switching effect.

[0045] Figure 3 Schematic structural diagram of the second embodiment of the anti-counterfeiting element. The anti-counterfeiting element 2 includes a transparent substrate layer 21 with a thickness of 15 μm to 30 μm. A first color-developing layer 22 with a thickness of 0.2 μm to 10 μm is provided on the first surface of the substrate layer 21. The first color-developing layer 22 is a colored pigment. A second color-developing layer 23 is provided on the second surface of the substrate layer 21. The second surface is opposite to the first surface. The second color-developing layer 23 contains a plurality of magnetic pigment flakes 24. Under the magnetic field of the magnetic orientation device, the magnetic pigment flakes 24 will be regionally oriented. The aforementioned angle A has two angles, and the angle A is ɑ or β. Specifically, when observing along the positive X-axis direction, the angle A changes from ɑIt changes to β. The value range of α is from 120° to 150°, and the value range of β is from 30° to 60°. When the observer 251 observes the anti-counterfeiting element along the first direction 25, the left side of the first color display layer 22 can be seen through the transparent substrate layer 21, while the right side of the first color display layer 22 is blocked by the magnetic pigment sheet 24. Therefore, only the pattern (if there is a pattern on the magnetic pigment sheet 24) or color of the magnetic pigment sheet 24 can be observed on the right side of the entire anti-counterfeiting element. The first color display layer 22 seen and the second color display layer 23 seen combine to form the first anti-counterfeiting pattern; when the observer 261 observes the anti-counterfeiting element along the second direction 26, the right side of the first color display layer 22 can be seen through the transparent substrate layer 21, while the left side of the first color display layer 22 is blocked by the magnetic pigment sheet 24. Therefore, only the pattern (if there is a pattern on the magnetic pigment sheet 24) or color of the magnetic pigment sheet 24 can be observed on the left side of the entire anti-counterfeiting element. The first color display layer 22 seen and the second color display layer 23 seen combine to form the second anti-counterfeiting pattern. Therefore, when the anti-counterfeiting element is rotated around the rotation axis parallel to the Y axis, the first anti-counterfeiting pattern and the second anti-counterfeiting pattern can be seen to have a switching effect.

[0046] Figure 4 is the first anti-counterfeiting pattern E seen when observing along the first direction 15 or 25, Figure 5 is the second anti-counterfeiting pattern F seen when observing along the second direction 16 or 26. Among them, the color of the pattern is the color of the first color display layer 12 or 22, and the color of the background is the color of the second color display layer 13 or 23.

[0047] Figure 6 is the structural schematic diagram of the third implementation manner of the anti-counterfeiting element. The anti-counterfeiting element 4 includes a substrate layer 41 with a thickness of 15um to 30um. A first color display layer 42 with a thickness of 0.2um to 10um is provided on the first surface of the substrate layer 41. The first color display layer 42 is a colored pigment. A second color display layer 43 is provided on the first color display layer 42. The second color display layer 43 contains a plurality of magnetic pigment sheets 44. Under the magnetic field of the magnetic orientation device, when observing along the positive X-axis direction, the aforementioned included angle A decreases from large to small. Of course, it can also increase from small to large. Only when the observation direction is parallel to the magnetic pigment sheet 44 can the first color display layer 42 be seen through the gap between adjacent magnetic pigment sheets 44. The second color display layer 43 seen and the first color display layer 42 seen combine to form an anti-counterfeiting pattern. Otherwise, due to the included angle between the observation direction and the plane of the magnetic pigment sheet 44, the line of sight will be partially or completely blocked by the magnetic pigment sheet 44, and the first color display layer 42 cannot be seen, and only the color of the magnetic pigment sheet 44 can be seen. Therefore, when the anti-counterfeiting element is rotated around the rotation axis parallel to the Y axis, different regions of the first color display layer 42 can be seen, and different anti-counterfeiting patterns can be obtained. Furthermore, during the rotation process, the anti-counterfeiting pattern appears sequentially from left to right or from right to left in the form of a scroll bar.

[0048] Figure 7 Schematic structural diagram of the fourth embodiment of the anti-counterfeiting element. The anti-counterfeiting element 5 includes a transparent substrate layer 51 with a thickness of 15 μm to 30 μm. A first color-developing layer 52 with a thickness of 0.2 μm to 10 μm is provided on the first surface of the substrate layer 51. The first color-developing layer 52 is a colored pigment. A second color-developing layer 53 is provided on the second surface of the substrate layer 51, and the second surface is disposed opposite to the first surface. The second color-developing layer 53 contains a plurality of magnetic pigment flakes 54. Under the magnetic field of the magnetic orientation device, when observed along the positive X-axis direction, the included angle A decreases from large to small. Of course, it can also increase from small to large. Only when the observation direction is parallel to the magnetic pigment flakes 54 can the first color-developing layer 52 be seen through the gap between adjacent magnetic pigment flakes 54. The seen second color-developing layer 53 and the seen first color-developing layer 52 combine to form an anti-counterfeiting pattern. Otherwise, due to the included angle between the observation direction and the plane of the magnetic pigment flakes 54, the line of sight will be partially or completely blocked by the magnetic pigment flakes 54, and the first color-developing layer 52 cannot be seen, and only the color of the magnetic pigment flakes 54 can be seen. Therefore, when the anti-counterfeiting element is rotated about a rotating shaft parallel to the Y-axis, different regions of the first color-developing layer 52 can be seen, obtaining different anti-counterfeiting patterns. Furthermore, during the rotation process, the anti-counterfeiting patterns are sequentially displayed in the form of a scroll bar from left to right or from right to left.

[0049] Figure 8 In the third and fourth embodiments, when the anti-counterfeiting element is rotated about a rotating shaft parallel to the Y-axis, the anti-counterfeiting pattern seen along a certain observation direction, where 611 is the color of the first color-developing layer 42 or 52, and 612 is the color of the magnetic pigment flakes 44 or 54.

[0050] In the third and fourth embodiments, in the same anti-counterfeiting element, if the included angle A has two different changing trends, then when the anti-counterfeiting element is rotated about a rotating shaft parallel to the Y-axis, two scroll bars that gradually move towards each other as the observation direction changes can be seen, as Figure 9 shown, where 621 is the color of the first color-developing layer 42 or 52, and 622 is the color of the magnetic pigment flakes 44 or 54.

[0051] In addition, the following content needs to be supplemented and explained, and the following supplementary explanation content applies to the first to fourth embodiments. For the sake of convenient expression, the reference numerals of each element are not given again:

[0052] 1. The first color-developing layer not only has a color, but also can be provided with a pattern. The pattern can be formed in the form of coating or printing. Similarly, the second color-developing layer can also be provided with a pattern, and the pattern can be formed in the form of coating or printing. Moreover, the patterns in different regions of the first color-developing layer and the second color-developing layer can be different; in addition, the first color-developing layer can also be magnetic pigment flakes;

[0053] 2. The color of the second color display layer can be a color that changes with the viewing angle or a fixed color that does not change with the viewing angle;

[0054] 3. Whether the first color display layer and the second color display layer are fixed colors or colors that change with the viewing angle, within the set viewing range, the colors of the first color display layer and the second color display layer observed are significantly different;

[0055] 4. The magnetic pigment sheet is a plane with or without a secondary structure. If there is a secondary structure, the secondary structure is a grating structure, and the size of the grating structure is at least one order of magnitude smaller than the size of the reflective surface of the magnetic pigment sheet, and the period of the grating structure is 0.2 um to 5 um; the secondary structure combines with the metal reflective layer to produce color, and the color of the magnetic pigment sheet can be adjusted by adjusting the parameters of the secondary structure;

[0056] 5. When the substrate layer is a transparent material, PET plastic, BOPP plastic or PC plastic can be selected;

[0057] 6. Along the direction parallel to the X-axis, the distance between the midpoints of the projection line segments of two adjacent magnetic pigment sheets on the first surface is L, the average angle between two adjacent magnetic pigment sheets and the positive X-axis is θ, and the average size of two adjacent magnetic pigment sheets is D, L = D×(1±5%)|cosθ|. In this way, sufficient gaps can be provided between adjacent magnetic pigment sheets so that the first color display layer can be seen through the gaps between adjacent magnetic pigment sheets;

[0058] 7. Both |90° - ɑ| and |90° - β| are 30° to 60°, and 70° ≤ |ɑ - β| ≤ 110°, so as to ensure that the angle A is not too small or too large, so that the first color display layer can be seen through the gaps between adjacent magnetic pigment sheets;

[0059] 8. The size of the magnetic pigment sheet is 5 um to 100 um, and the thickness of the magnetic pigment sheet is 0.1 um to 50 um.

[0060] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An anti-counterfeiting element, characterized in that, At least in some regions, it includes a substrate layer, a first color display layer, and a second color display layer simultaneously; in the XYZ coordinate system, both the substrate layer and the first color display layer are parallel to the XOY plane, the first color display layer is formed on the first surface of the substrate layer, the second color display layer is formed on the surface of the first color display layer facing away from the substrate layer or on the second surface of the substrate layer, and the second surface is disposed opposite to the first surface; the second color display layer includes a plurality of magnetic pigment flakes, the plane where the magnetic pigment flakes are located is defined as the pigment flake plane, the pigment flake plane intersects with the XOZ plane to form an intersection line, the included angle between the intersection line and the positive direction of the X-axis is A, when observing along the positive direction of the X-axis, the included angle A changes from ɑ to β, or, when observing along the positive direction of the X-axis, the included angle A shows an increasing or decreasing trend within the range from ɑ to β; within a preset observation range, on the side of the second color display layer facing away from the first surface, the second color display layer and at least part of the first color display layer can be observed simultaneously.

2. The anti-counterfeiting element according to claim 1, characterized in that, Both |90° - ɑ| and |90° - β| are 30° to 60°, and 70° ≤ |ɑ - β| ≤ 110°.

3. The anti-counterfeiting element according to claim 2, characterized in that, Along the direction parallel to the X-axis, the distance between the midpoints of the projection line segments of two adjacent magnetic pigment flakes on the first surface is L, the average included angle between two adjacent magnetic pigment flakes and the positive direction of the X-axis is θ, the average size of two adjacent magnetic pigment flakes is D, and L = D×(1 ± 5%)|cosθ|.

4. The anti-counterfeiting element according to claim 1, characterized in that, The size of the magnetic pigment flakes is 5um to 100um, and / or the thickness of the magnetic pigment flakes is 0.1um to 50um.

5. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic pigment flakes are planes with or without secondary structures.

6. The anti-counterfeiting element according to claim 5, characterized in that, The secondary structure is a grating structure, and the size of the grating structure is at least one order of magnitude smaller than the size of the reflection surface of the magnetic pigment flakes.

7. The security element according to claim 6, characterized in that, The period of the grating structure is 0.2um to 5um.

8. The anti-counterfeiting element according to claim 1, characterized in that, The colors of the second color display layer and the first color display layer are different.

9. The anti-counterfeiting element according to claim 1, characterized in that, When the second color display layer is formed on the second surface, the substrate layer is made of a transparent material.

10. The anti-counterfeiting element according to claim 1, characterized in that, When the second color display layer is formed on the surface of the first color display layer facing away from the substrate layer, the substrate layer is made of an opaque or transparent material.

11. The anti-counterfeiting element according to claim 1, characterized in that, The first color display layer is a colored coating or magnetic pigment flakes.

12. The anti-counterfeiting element according to claim 1, characterized in that, The first color display layer is provided with a pattern, and / or the second color display layer is provided with a pattern.

13. The anti-counterfeiting element according to claim 1, characterized in that, When rotating the anti-counterfeiting element around a rotating shaft parallel to the Y-axis, a pattern switching effect or a scroll bar effect is presented.

14. The security element according to any one of claims 1 to 13, characterized in that, The anti-counterfeiting element is used for anti-counterfeiting of banknotes or identity cards.

Images