CN212208736U - Color-changing anti-counterfeiting film and electronic products - Google Patents

Abstract

The utility model relates to a color-changing anti-counterfeiting film and an electronic product. The color-changing anti-counterfeiting film comprises a layered primer layer, an anti-counterfeiting color layer and a protective layer, and the anti-counterfeiting color layer comprises a first metal layer, a medium layer and a second metal layer arranged in sequence. The first metal layer is arranged on the base layer, the protective layer is arranged on the second metal layer, the optical thickness of the dielectric layer is an even multiple of the half wavelength of the desired display color, the first metal layer and the second metal layer are both. Has transflective properties. The above-mentioned color-changing anti-counterfeiting film presents a good color effect by utilizing the reflectivity of the first metal layer, the second metal layer and the color effect of the medium layer. , the optical thickness value of the dielectric layer of each product can be designed to be different, so that even if the incident angle is the same between different products, the color effect presented is different, so that it can be uniquely identified and has a good anti-counterfeiting effect.

Description

Color-changing anti-counterfeiting film and electronic products

technical field

The utility model relates to the technical field of optical color-changing films, in particular to a color-changing anti-counterfeiting film and electronic products.

Background technique

With the widespread use of electronic products, companies need to display some of their own unique company names, logos, special characters and other pattern information on the surface of the product. These pattern information are generally presented on the back surface of the product. These pattern information needs to be able to reflect the relevant information of the company very well, so that it is unique so that others cannot simulate it.

There are two common processing methods that need to present the company's pattern information on the surface of the product. One is to use screen printing and spraying to present the pre-designed pattern on the substrate. The pattern processed by this method is from The color effect is better when viewed from the front, but the effect of the pattern information cannot be displayed from multiple angles, the visual effect is not good, and the effect of preventing others from imitating cannot be achieved. The other is to use metallized film to produce pattern information, which is convenient to produce, but limited by the color of the metal film layer, the color of the pattern information that can be produced is relatively monotonous, and only the front color effect is bright, Similarly, the effect of pattern information cannot be displayed from multiple angles, the visual effect is not good, and it is only simple color information, and the anti-counterfeiting effect is also not good.

Utility model content

Based on this, it is necessary to provide a color-changing anti-counterfeiting film and an electronic product with better display effect and anti-counterfeiting function.

A color-changing anti-counterfeiting film is used to be plated on a base material; the color-changing anti-counterfeiting film comprises a layered primer layer, an anti-counterfeiting color layer and a protective layer, and the primer layer is used to be arranged on the base material,

The anti-counterfeiting color layer includes a first metal layer, a dielectric layer and a second metal layer arranged in sequence, the first metal layer is arranged on the primer layer, the protective layer is arranged on the second metal layer, The optical thickness of the dielectric layer is an even multiple of the half wavelength of the desired display color, and both the first metal layer and the second metal layer have transflective properties.

The above-mentioned discoloration anti-counterfeiting film includes a bottom layer, an anti-counterfeiting color layer and a protective layer, and the bottom layer is arranged on the surface of the base material, so that the anti-counterfeiting color layer and the base material have good adhesion, and the anti-counterfeiting color layer includes sequentially arranged The first metal layer, the dielectric layer and the second metal layer, the optical thickness of the dielectric layer is an even multiple of the half wavelength of the desired display color, the first metal layer and the second metal layer are both semi-transmissive and reflective, through The combination of the reflectivity of the first metal layer and the second metal layer and the color effect of the dielectric layer presents a good color effect, so that the pattern information on the product has a bright color effect. The optical thickness of the dielectric layer changes with the incident angle, while the medium When the optical thickness of the layer is changed, the color effect presented also changes, so that the color-changing anti-counterfeiting film has the characteristic of showing a variety of different bright colors with different incident angles. At the same time, the optical thickness value of the dielectric layer of each product can be designed to be different, so that even if the incident angle is the same between different products, the color effect presented is different, so that it can be uniquely identified and has a good anti-counterfeiting effect.

In one of the embodiments, an ink layer is further included, and the ink layer is provided on a surface of the protective layer on one side away from the anti-counterfeiting color layer.

In one embodiment, the thickness of the ink layer is 10um-30um.

In one embodiment, the thickness of the anti-counterfeiting color layer is 50nm-600nm.

In one embodiment, the thickness of the first metal layer is 10 nm-100 nm; and/or the thickness of the second metal layer is 10 nm-100 nm.

In one embodiment, the thickness of the primer layer is 20nm-50nm.

In one embodiment, the thickness of the protective layer is 10 nm-100 nm.

In one embodiment, the first metal layer is an Al layer, a Cr layer, or a Ni layer; and/or, the second metal layer is an Al layer, a Cr layer, or a Ni layer.

In one embodiment, the dielectric layer is one of a Ti ₃ O ₅ layer, a Nb ₂ O ₅ layer, a TiO ₂ layer, a ZrO ₂ layer, a H ₄ layer and a SiO ₂ layer.

An electronic product includes a base material and the above-mentioned color-changing anti-counterfeiting film, wherein the color-changing anti-counterfeiting film is plated on the base material.

Description of drawings

FIG. 1 is a schematic structural diagram of the color-changing anti-counterfeiting film of the present invention.

The meanings of the symbols in the accompanying drawings are:

Substrate 100 , primer layer 10 , anti-counterfeiting color layer 20 , first metal layer 21 , dielectric layer 22 , second metal layer 23 , protective layer 30 , and ink layer 40 .

Detailed ways

In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not subject to the specific embodiments disclosed below. limit.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. 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.

In the present invention, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

FIG. 1 shows a schematic structural diagram of a color-changing anti-counterfeiting film in an embodiment of the present invention. The color-changing anti-counterfeiting film provided by an embodiment of the present invention is used for plating on a substrate 100, and the substrate 100 may be glass or plastic. etc., the base material 100 is mainly the back cover of the electronic product, and it can be understood that the color-changing anti-counterfeiting film is mainly used for plating on the outer surface of the back cover of the electronic product. In this embodiment, the color-changing anti-counterfeiting film is used for plating on the outer surface of the back cover of the mobile phone.

The color-changing anti-counterfeiting film includes a primer layer 10, an anti-counterfeiting color layer 20 and a protective layer 30 arranged in layers. On the anti-counterfeiting color layer 20, it can be understood that on the base material 100, a primer layer 10, an anti-counterfeiting color layer 20 and a protective layer 30 are arranged in sequence. The anti-counterfeiting color layer 20 includes a first metal layer 21 , a dielectric layer 22 and a second metal layer 23 arranged in sequence. The first metal layer 21 is arranged on the base layer 10 , and the dielectric layer 22 is arranged on the first metal layer 21 . The second metal layer 23 is disposed on the dielectric layer 22, and the protective layer 30 is disposed on the second metal layer 23. The optical thickness of the dielectric layer 22 is an even multiple of the half wavelength of the desired display color. The first metal layer and the The second metal layers all have transflectivity.

In one embodiment, the color-changing anti-counterfeiting film further includes an ink layer 40 , and the ink layer 40 is disposed on a surface of the protective layer 30 on one side away from the anti-counterfeiting color layer 20 . It can be understood that the primer layer 10 , the anti-counterfeiting color layer 20 , the protective layer 30 and the ink layer 40 are stacked in sequence.

During production, the following steps are included:

1. The primer layer 10 is plated on the surface of the substrate 100 . In this embodiment, the primer layer 10 is plated on the outer surface of the back cover of the mobile phone.

2. The anti-counterfeiting color layer 20 is plated on the base layer 10 . Specifically, the anti-counterfeiting color layer 20 is plated on the side surface of the primer layer 10 away from the base material 100 . And in the process of plating the anti-counterfeiting color layer 20 on the base layer 10, the first metal layer 21 is first plated on the side surface of the base layer 10 away from the base material 100, and then the dielectric layer 22 is plated on the first layer. A metal layer 21 is on the surface of the side facing away from the base layer 10 , and finally the second metal layer 23 is plated on the side surface of the dielectric layer 22 facing away from the first metal layer 21 .

3. The protective layer 30 is plated on the anti-counterfeiting color layer 20 . Specifically, the protective layer 30 is plated on the surface of the anti-counterfeiting color layer 20 on one side away from the primer layer 10 . Understandably, since the first metal layer 21 is plated on the side surface of the base layer 10 away from the base material 100 , the dielectric layer 22 is plated on the side surface of the first metal layer 21 away from the base layer 10 , the second metal layer 22 is plated on the side surface of the first metal layer 21 away from the base layer 10 . The layer 23 is plated on the side surface of the dielectric layer 22 away from the first metal layer 21 , and the protective layer 30 is plated on the side surface of the second metal layer 23 away from the dielectric layer 22 .

4. The ink layer 40 is plated on the protective layer 30 . Specifically, the ink layer 40 is plated on the surface of the protective layer 30 on one side away from the anti-counterfeiting color layer 20 . Understandably, since the protective layer 30 is plated on the surface of the second metal layer 23 away from the dielectric layer 22 , the ink layer 40 is plated on the surface of the protective layer 30 away from the second metal layer 23 .

The above-mentioned discoloration anti-counterfeiting film is provided with a primer layer 10, and the primer layer 10 is arranged on the surface of the base material 100, so that the anti-counterfeiting color layer 20 and the base material 100 have good adhesion, and effectively ensure that the first metal layer 21 and the base material 100 have good adhesion. Adhesion between substrates 100 . The anti-counterfeiting color layer 20 includes a first metal layer 21 , a dielectric layer 22 and a second metal layer 23 arranged in sequence. The optical thickness of the dielectric layer 22 is an even multiple of the half wavelength of the desired display color. and the second metal layer 23 are all semi-transmissive and reflective, so that a good color effect is presented by using the combination of the reflectivity of the first metal layer 21 and the second metal layer 23 and the color effect of the dielectric layer 22 . The protective layer 30 is provided on the anti-counterfeiting color layer 20 to protect the anti-counterfeiting color layer 20, effectively preventing the anti-counterfeiting color layer 20 from being scratched and the first metal layer 21 and the second metal layer 23 in the anti-counterfeiting color layer 20 from being oxidized. Conducive to ensuring product quality. By setting the ink layer 40 on the protective layer 30, the ink can make the color more obvious. At the same time, the color-changing anti-counterfeiting film is mainly used for the back cover of the electronic product to ensure that the surface of the back cover of the electronic product has a full color, effectively improving the consumer experience.

Specifically, the first metal layer 21 and the second metal layer 23 can allow a part of the transmitted light to pass through, and another part of the reflected light to reflect back, so that the reflected color effect of the product is more vivid and looks like a metal effect. Different optical thicknesses of the dielectric layer 22 will present different color effects. Here, define the refractive index of the dielectric layer 22 as n, the physical thickness of the dielectric layer 22 as d, the incident angle as θ, and the optical thickness of the dielectric layer 22 as ndcosθ , so that with the change of the incident angle θ, the optical thickness of the dielectric layer 22 also changes, and the color presented when the optical thickness of the dielectric layer 22 changes also changes, so that the color-changing anti-counterfeiting film has a variety of different bright colors with different incident angles. The characteristics of color, so that the color can be identified according to the change of the incident angle. It is understandable that the overall drift of the color-changing anti-counterfeiting film with the angle within the wavelength range of the visible light of the human eye will make the viewer see different s color. At the same time, for products with different physical thicknesses of the dielectric layer 22, different color effects will appear even when viewed from the same incident angle, so that the physical thicknesses of the dielectric layer 22 of different products can be designed to be different, and it is possible to design the physical thickness of each product by designing the The optical thickness values of the dielectric layer 22 are different, so that even if the incident angle is the same between different products, the color effects presented are different, so that they can be uniquely identified and have a good anti-counterfeiting effect.

In addition, it should be noted that, with the change of the incident angle, the s-polarized light and the There is a difference in the refractive index of p-polarized light, and it will also show different colors, but the effect is not obvious.

In some embodiments, the thickness of the primer layer 10 is 20 nm-50 nm. Specifically, the thickness of the primer layer 10 is 30 nm-40 nm. It should be noted that, the number of layers of the base layer 10 may be one or more layers, which may be designed according to actual requirements.

In some embodiments, the primer layer 10 is a SiO ₂ layer or an Al ₂ O ₃ layer, etc. It is understood that the material of the primer layer 10 can be SiO ₂ or Al ₂ O ₃ or the like.

The thickness of the anti-counterfeiting color layer 20 is 50nm-600nm. Likewise, the number of layers of the anti-counterfeiting color layer 20 can be one or more layers, which can be designed according to actual requirements.

In some embodiments, the thickness of the first metal layer 21 is 10 nm-100 nm. The thickness of the second metal layer 23 is 10 nm-100 nm.

In some embodiments, the first metal layer 21 is an Al layer, a Cr layer, or a Ni layer. It is understood that the material of the first metal layer 21 may be Al, Cr, or Ni, or the like. The second metal layer 23 is also an Al layer, a Cr layer, a Ni layer, or the like. Likewise, it can be understood that the material of the second metal layer 2 can be Al, Cr, Ni, or the like. The dielectric layer 22 is a Ti3O5 layer, a Nb2O5 layer, a TiO2 layer, a ZrO2 layer, a H4 layer or a _SiO2 layer, etc. It can be understood that the material of the dielectric layer 22 can be Ti3O5, Nb2O5, TiO2, ZrO2, H4 or _SiO2 , etc.

In some embodiments, the thickness of the protective layer 30 is 10 nm-100 nm, specifically, the thickness of the protective layer 30 is 40 nm-70 nm. The protective layer 30 is a SiO ₂ layer or an Al ₂ O ₃ layer, etc. It is understood that the material of the protective layer 30 can be SiO ₂ or Al ₂ O ₃ or the like. Likewise, the number of layers of the protective layer 30 can be one or more layers, which can be designed according to actual requirements.

In some embodiments, the thickness of the ink layer 40 is 10um-30um, specifically, the thickness of the ink layer 40 is 15um-25um. Likewise, the number of layers of the ink layer 40 can be one or more layers, which can be designed according to actual requirements.

Specifically in this embodiment, the color-changing anti-counterfeiting film includes a primer layer 10, an anti-counterfeit color layer 20, a protective layer 30 and an ink layer 40, and the primer layer 10 is used to be disposed on the surface of the substrate 100, The anti-counterfeiting color layer 20 is disposed on the base layer 10 , the protective layer 30 is disposed on the anti-counterfeiting color layer 20 , and the ink layer 40 is disposed on the protective layer 30 .

The present invention also provides an electronic product, comprising a base material 100 and the above-mentioned discoloration anti-counterfeiting film, and the color-changing anti-counterfeiting film is plated on the base material 100 . Specifically, during production, first the primer layer 10 is directly plated on the surface of the base material 100, then the anti-counterfeiting color layer 20 is plated on the primer layer 10, and then the protective layer 30 is plated on the anti-counterfeit color layer 20, Finally, the ink layer 40 is plated on the protective layer 30 .

The color-changing anti-counterfeiting film of the present invention includes a primer layer 10 , an anti-counterfeiting color layer 20 , a protective layer 30 and an ink layer 40 . have good adhesion between them. The anti-counterfeiting color layer 20 includes a first metal layer 21 , a dielectric layer 22 and a second metal layer 23 arranged in sequence. The optical thickness of the dielectric layer 22 is an even multiple of the half wavelength of the desired display color. and the second metal layer 23 have semi-transmissive reflectivity, by using the combination of the high reflectivity of the first metal layer 21, the second metal layer 23 and the color effect of the dielectric layer 22 to present a good color effect, so that the pattern information on the product The color effect is bright, the optical thickness of the dielectric layer 22 changes with the change of the incident angle, and the color effect presented when the optical thickness of the dielectric layer 22 changes also changes, so that the viewer will see different colors from different angles. It is especially suitable for logos of the same color, and the pattern information can be easily reflected on the product.

At the same time, the optical thickness value of the dielectric layer of each product can be designed to be different, so that even if the incident angle is the same between different products, the color presented is different, so that it can be uniquely identified and has a good anti-counterfeiting effect. The optical thickness value of the dielectric layer of each product can be designed to be different, so that even if the incident angle is the same between different products, the color effect presented is different, so that it can be uniquely identified, others cannot simulate it, and it has a good anti-counterfeiting effect.

The structure of the color-changing anti-counterfeiting film and the material of the interlayer are simple, the overall thickness is relatively thin, it can be mass-produced and processed, the cost is low, and the environmental adaptability is good. The first metal layer 21 and the second metal layer 23 in the scratched and anti-counterfeiting color layer 20 are oxidized, which is beneficial to ensure product quality. The ink layer 40 allows the colors to be displayed more clearly, ensures that the surface of the back cover of the electronic product has a full color, and effectively improves the user experience.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

1. The color-changing anti-counterfeiting film is used for being plated on a base material; the color-changing anti-counterfeiting film is characterized by comprising a base layer, an anti-counterfeiting color layer and a protective layer which are arranged in a stacked mode, wherein the base layer is arranged on a base material, the anti-counterfeiting color layer comprises a first metal layer, a dielectric layer and a second metal layer which are arranged in sequence, the first metal layer is arranged on the base layer, the protective layer is arranged on the second metal layer, the optical thickness of the dielectric layer is even times of half wavelength of the color to be displayed, and the first metal layer and the second metal layer both have semi-transmitting reflectivity.

2. The color-changing anti-counterfeiting film according to claim 1, further comprising an ink layer, wherein the ink layer is arranged on the surface of the side of the protective layer, which faces away from the anti-counterfeiting color layer.

3. The color-changing anti-counterfeiting film according to claim 2, wherein the thickness of the ink layer is 10um to 30 um.

4. The color-changing anti-counterfeiting film according to claim 1, wherein the thickness of the anti-counterfeiting color layer is 50nm to 600 nm.

5. The color-changing anti-counterfeiting film according to claim 1, wherein the thickness of the first metal layer is 10nm to 100 nm; and/or the thickness of the second metal layer is 10nm-100 nm.

6. The color-changing anti-counterfeiting film according to claim 1, wherein the thickness of the primer layer is 20nm to 50 nm.

7. The color-changing anti-counterfeiting film according to claim 1, wherein the thickness of the protective layer is 10nm to 100 nm.

8. The color-changing anti-counterfeiting film according to claim 1, wherein the first metal layer is an Al layer or a Cr layer or a Ni layer; and/or the second metal layer is an Al layer or a Cr layer or a Ni layer.

9. The color-changing anti-counterfeiting film according to claim 1, wherein the dielectric layer is Ti₃O₅Layer, Nb₂O₅Layer, TiO₂Layer, ZrO₂Layer H₄One of a layer and a SiO2 layer.

10. An electronic product, comprising a substrate and the color-changing anti-counterfeiting film according to any one of claims 1 to 9, wherein the color-changing anti-counterfeiting film is plated on the substrate.

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