Six-star-shaped reflective film and electronic product backboard

Abstract

The utility model provides a hexagonal star reflective film and an electronic product backplane, the hexagonal star reflective film comprises a reflective microstructure, the reflective microstructure comprises hexagonal micro-units which are uniformly and circularly arranged in the row and column direction, each hexagonal micro-unit is provided with a plurality of reflective through grooves, and the reflective through grooves are communicated with the hexagonal micro-units. The directions of the reflection through grooves are respectively along the main diagonal direction and the secondary diagonal direction of the hexagonal micro-units; when the reflective microstructure is irradiated by a point light source, light emitted by the point light source is reflected by the reflection through grooves in the different hexagonal micro units in the main diagonal direction to form six inner ring light spots. Light emitted by the point light source is reflected by the reflection through grooves in the different hexagonal micro-units in the secondary diagonal direction to form six outer ring light spots, the inner ring light spots and the outer ring light spots form a hexagonal star structure, visual bright spots are added to the backboard of the electronic product, the product is made to have higher identification degree and attraction, and the product quality is improved. And the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of reflective films, in particular to a six-pointed star reflective film and an electronic product backplane. Background Art

[0002] With the rapid development of technology, portable electronic products such as smart phones and tablet computers have become an indispensable part of people's daily lives. These electronic products not only carry multiple functions such as communication, entertainment, and office work, but their appearance design has also gradually become one of the important considerations for consumers when choosing products. With the improvement of consumers' aesthetic level and the increase in personalized needs, the traditional single design of electronic product backplanes has been difficult to meet the diversified needs of the market.

[0003] Traditionally, the decoration of electronic product backplanes is mainly achieved by changing materials (such as glass and metal), which often leads to a too monotonous design, lacking innovation and visual impact. This single design method is difficult to stand out among numerous products and is also difficult to bring a refreshing user experience to consumers. Especially in today's consumer era that pursues personalization and differentiation, consumers have higher expectations for the appearance design of electronic products. They are eager to see more novel, unique, and creative design elements incorporated into them.

[0004] In addition, glass backplanes are favored by the market for their smooth texture, high-grade feeling, and scratch resistance, but their high cost and fragility limit their wide application. Moreover, the thermal conductivity of glass materials is relatively poor, which means that when the device is running at high speed or used for a long time, the glass backplane may become a bottleneck for heat accumulation, affecting the overall heat dissipation effect of the device, and may further lead to a decline in device performance or the triggering of overheat protection mechanisms. Metal backplanes provide the characteristics of being strong and durable, and at the same time show a cold industrial beauty. However, as a conductive material, metal backplanes have a shielding and absorption effect on electromagnetic fields, affecting signal reception, and have poor heat dissipation performance; the processing of metal backplanes is relatively complex and requires the use of special processing equipment and processes, which increases the production cost.

[0005] Therefore, how to improve the aesthetics and personalization of electronic product backplanes while maintaining their functionality and durability has become an important challenge faced by current electronic product manufacturers. Summary of the Utility Model

[0006] In view of the above-mentioned disadvantages of the prior art, the technical problem to be solved by the utility model is to provide a six-pointed star reflective film and an electronic product backplane, which are used to solve the technical problems such as high cost, large processing difficulty, fragility, poor heat dissipation, and insufficient aesthetics of electronic product backplanes in the prior art.

[0007] To achieve the above object, the present utility model provides a six-pointed star reflective film, the six-pointed star reflective film includes a reflective microstructure, the reflective microstructure includes hexagonal micro-units arranged in a uniform circular pattern in the row and column directions, and a plurality of reflection through grooves are provided on each hexagonal micro-unit, and the directions of the reflection through grooves are respectively along the main diagonal direction and the secondary diagonal direction of the hexagonal micro-unit; wherein, when the reflective microstructure is irradiated by a point light source, the light emitted by the point light source forms six inner ring light spots after being reflected by the reflection through grooves along the main diagonal direction in different hexagonal micro-units, and the light emitted by the point light source forms six outer ring light spots after being reflected by the reflection through grooves along the secondary diagonal direction in different hexagonal micro-units, and the inner ring light spots and the outer ring light spots form a six-pointed star structure.

[0008] As a more preferred embodiment, the reflection through groove is a V-shaped through groove.

[0009] As a more preferred embodiment, the angular range of the reflection through groove along the main diagonal direction of the hexagonal micro-unit is 130° - 160°.

[0010] As a more preferred embodiment, the angular range of the reflection through groove along the secondary diagonal direction of the hexagonal micro-unit is 130° - 150°.

[0011] As a more preferred embodiment, the depth range of the reflection through groove is 10 - 15 μm.

[0012] As a more preferred embodiment, the angle of the reflection through groove along the main diagonal direction of the hexagonal micro-unit is greater than the angle of the reflection through groove along the secondary diagonal direction of the hexagonal micro-unit.

[0013] As a more preferred embodiment, the six-pointed star reflective film further includes a reflective film, and the reflective film is disposed on the reflective microstructure.

[0014] As a more preferred embodiment, the material of the reflective film includes one or a combination of more of: silicon dioxide, titanium dioxide, zirconium oxide, and titanium trioxide pentoxide.

[0015] To achieve the above object, the present utility model further provides an electronic product backplane, including:

[0016] A backplane body;

[0017] A transparent layer, the above-mentioned six-pointed star reflective film, and a cover bottom layer are sequentially laminated and adhered on the backplane body; the reflective microstructure of the six-pointed star reflective film is used to generate a six-pointed star structure pattern, the reflective film in the six-pointed star reflective film is used to reflect light, the transparent layer is used to protect the six-pointed star reflective film; the cover bottom layer is used to protect the backplane main body.

[0018] As a more preferred embodiment, a camera reservation hole is further provided on the backplane body.

[0019] As described above, the hexagram reflective film and the electronic product backplane involved in the present utility model have the following beneficial effects:

[0020] For the hexagram reflective film of the present utility model, due to the different angles, depths and orientations of the reflection through grooves along the main diagonal direction and the reflection through grooves along the secondary diagonal direction, when the reflective microstructure is irradiated by a point light source, the reflection angles and the amount of reflected light of each side of the reflection through groove to the light are different, and there are angular brightness differences in the generated reflection spots. Therefore, the light emitted by the point light source forms six inner ring spots after being reflected by the reflection through grooves along the main diagonal direction in different hexagonal micro-units, and the light emitted by the point light source forms six outer ring spots after being reflected by the reflection through grooves along the secondary diagonal direction in different hexagonal micro-units. The inner ring spots and the outer ring spots form a hexagram structure, and the human eye can see the special spots of the hexagram structure on the hexagram reflective film, which not only improves the overall aesthetics of the product, but also demonstrates a unique sense of design.

[0021] For the electronic product backplane of the present utility model, the above-mentioned hexagram reflective film is provided on the backplane body. With its unique pattern and reflective effect, the hexagram reflective film not only adds a visual highlight to the electronic product backplane, making the product more recognizable and attractive, improving the visual effect and user experience of the product, and providing more design space and flexibility for manufacturers. In addition, due to the characteristics of convenient design, easy mold forming and relatively controllable cost of the hexagram reflective film, the production cost of the electronic product is reduced. Secondly, the hexagram reflective film has high wear and scratch resistance, and can effectively protect the electronic product backplane from wear and scratches during daily use and carrying. Moreover, the hexagram reflective film also has heat insulation performance, can reduce the heat generated by direct sunlight, lower the internal temperature of the electronic product, thereby reducing energy consumption and extending the battery life. Finally, as a non-conductive material, the hexagram reflective film will not interfere with the signal transmission, which helps to maintain the stability and clarity of the device signal. Description of the Drawings

[0022] Figure 1 It shows a partial schematic diagram of the reflective microstructure in the hexagram reflective film in an embodiment of the present application.

[0023] Figure 2 It shows the imaging principle diagram of the hexagonal micro-unit in an embodiment of the present application.

[0024] Figure 3 It shows the structural schematic diagram of the hexagonal micro-unit in an embodiment of the present application.

[0025] Figure 4It shows a side view schematic diagram of the reflection through - slot orientation in a hexagonal micro - unit in an embodiment of the present application.

[0026] Figure 5 It shows a front view schematic diagram of the reflection through - slot orientation in a hexagonal micro - unit in an embodiment of the present application.

[0027] Figure 6 It shows an effect schematic diagram of a six - pointed - star reflective film in an embodiment of the present application.

[0028] Figure 7 It shows a schematic diagram of the layered structure of an electronic product backplane in an embodiment of the present application.

[0029] Element number description

[0030] 1 Reflective microstructure

[0031] 11 Hexagonal micro - unit

[0032] 111 Reflection through - slot

[0033] 2 Reflective film

[0034] 3 Transparent layer

[0035] 4 Cover bottom layer Detailed implementation manners

[0036] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0037] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is only defined by the claims of the published patent. The terms used here are only for describing specific embodiments and are not intended to limit the present application. Spatially - related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0038] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", "holding" 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 a direct connection or an indirect connection 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 utility model can be understood according to specific circumstances.

[0039] Furthermore, as used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the stated features, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" used herein are to be construed as inclusive, or meaning any one or any combination. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition only occurs when the combination of elements, functions or operations are mutually exclusive in some way.

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be further described in detail through the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] As Figures 1-6 shown, the present utility model provides a six-pointed star reflective film. The six-pointed star reflective film includes a reflective microstructure 1. The reflective microstructure 1 includes hexagonal micro-units 11 arranged in a uniform circular pattern in the row and column directions. A plurality of reflection slots 111 are provided on each hexagonal micro-unit 11. The directions of the reflection slots 111 are respectively along the main diagonal direction and the secondary diagonal direction of the hexagonal micro-unit 11.

[0042] Among them, when the reflective microstructure 1 is irradiated by a point light source, the light rays emitted by the point light source are reflected by the reflection slots 111 along the main diagonal direction in different hexagonal micro-units 11 to form six inner ring light spots, and the light rays emitted by the point light source are reflected by the reflection slots 111 along the secondary diagonal direction in different hexagonal micro-units 11 to form six outer ring light spots. The inner ring light spots and the outer ring light spots form a six-pointed star structure.

[0043] For the hexagram reflective film of the present utility model, since the angles, depths, and orientations of the reflection channels 111 along the main diagonal direction and the reflection channels 111 along the secondary diagonal direction are different, when the reflective microstructure 1 is irradiated by a point light source, the reflection angles and the amounts of reflected light of the side faces of each reflection channel 111 are different, and the generated reflection spots have angular brightness differences. Therefore, the light emitted by the point light source forms six inner ring spots after being reflected by the reflection channels 111 along the main diagonal direction in different hexagonal micro-units 11, and the light emitted by the point light source forms six outer ring spots after being reflected by the reflection channels 111 along the secondary diagonal direction in different hexagonal micro-units 11. The inner ring spots and the outer ring spots form a hexagram structure, and the human eye can see the special spots of the hexagram structure on the hexagram reflective film, which not only improves the overall aesthetics of the product but also demonstrates a unique design sense.

[0044] Furthermore, the hexagram reflective film of the present utility model can be formed by a simple mold without complex processing equipment and processes, thereby reducing the production cost. The hexagram reflective film is relatively thin and light, does not directly participate in heat conduction, has heat insulation performance, good heat dissipation performance, can reduce the overall weight of the equipment, and at the same time, due to its non-fragile characteristics, the durability and reliability of the equipment are increased. As a non-conductive material, the hexagram reflective film does not interfere with signal transmission, which helps to maintain the stability and clarity of the equipment signal.

[0045] In this embodiment, as Figure 2 shown, since the size of the hexagonal micro-unit 11 is very small, the light emitted by the point light source can be approximated as parallel light when it enters the hexagonal micro-unit 11. According to Snell's reflection law, the reflected light formed after being reflected by the side face of the reflection channel 111 will diverge in multiple directions, and the reflected light that can enter the human eye comes from the side face of a certain reflection channel 111. As the observation angle of the human eye changes, although the original reflected light cannot be seen, the reflected light from other side faces will enter the human eye. Therefore, no matter from which direction the observation is made, the inner ring spots and the outer ring spots of the hexagram structure formed on the hexagram reflective film can be seen.

[0046] In this embodiment, Snell's law of reflection, also known as the law of reflection of light, is a fundamental principle in optics that describes the reflection phenomenon that occurs when light rays encounter the interface between different media. The law of reflection of light can be summarized as follows: (1) The reflected ray, the incident ray, and the normal are coplanar: This means that the reflected ray, the incident ray, and the normal at the intersection of them and the interface of the medium are all located in the same plane. (2) The reflected ray and the incident ray are on opposite sides of the normal: The reflected ray and the incident ray are respectively on both sides of the normal, and their propagation directions are symmetric about the normal. (3) The angle of reflection is equal to the angle of incidence: The angle between the reflected ray and the normal (called the angle of reflection) is equal to the angle between the incident ray and the normal (called the angle of incidence). This is the core content of the law of reflection and is also the key to distinguishing the reflection phenomenon from other optical phenomena (such as refraction).

[0047] In this embodiment, as Figure 3 shown, the reflection through groove 111 is a V-shaped through groove, and the orientations of the V-shaped through groove are respectively along the main diagonal direction and the secondary diagonal direction of the hexagonal micro-unit 11. Each hexagonal micro-unit 11 has a regular hexagonal structure. The connection line between each vertex of the regular hexagonal structure and the vertex separated by two vertices is the main diagonal, and the connection line between each vertex of the regular hexagon and the vertex separated by one vertex is the secondary diagonal. Specifically, starting from the first vertex, the vertex separated by two vertices is the fourth vertex, forming a main diagonal. Then, starting from the second vertex, the vertex separated by two vertices is the fifth vertex, forming another main diagonal. Similarly, starting from the third vertex, the vertex separated by two vertices is the sixth vertex, forming another main diagonal. However, starting from the fourth vertex, the vertex separated by two vertices will be the first vertex, which is the same diagonal as the one from the first vertex to the fourth vertex before, so it is not recalculated. Similarly, the diagonals formed starting from the fifth and sixth vertices will also be repeated with those calculated before. Therefore, a regular hexagon actually has only three main diagonals and six secondary diagonals. Similarly, the number of reflection through grooves 111 along the main diagonal direction of the hexagonal micro-unit 11 is three, and the number of reflection through grooves 111 along the secondary diagonal direction of the hexagonal micro-unit 11 is six.

[0048] In this embodiment, as Figure 4 shown, the angular range of the reflection through groove 111 along the main diagonal direction of the hexagonal micro-unit 11 is 130° - 160°. The angular value of the reflection through groove 111 along the main diagonal direction of the hexagonal micro-unit 11 is represented by Φ.

[0049] In this embodiment, as Figure 5As shown, the angular range of the reflection through-slot 111 along the 11th diagonal direction of the hexagonal micro-unit is 130° - 150°. The angular value of the reflection through-slot 111 along the 11th diagonal direction of the hexagonal micro-unit is represented by Θ.

[0050] In this embodiment, as Figure 4 , 5 shown, the depth range of the reflection through-slot 111 is 10 - 15 μm. The factor determining the reflection angle mainly depends on the angle of the V-shaped opening of the reflection through-slot 111. The larger this angle, the more concentrated the light spot; the smaller this angle, the more divergent the light spot. The factor determining the reflection light intensity mainly depends on the depth of the V-shaped opening of the reflection through-slot 111. Within a certain range, the deeper the depth, the greater the light intensity of the light spot corresponding to the reflection through-slot 111. During actual use, the angle and depth of the V-shaped opening of the reflection through-slot 111 can be limited according to needs.

[0051] In this embodiment, the angle of the reflection through-slot 111 along the main diagonal direction of the hexagonal micro-unit is greater than the angle of the reflection through-slot 111 along the 11th diagonal direction of the hexagonal micro-unit. Thus, when illuminated by a point light source, a six-pointed star structure including an inner ring light spot and an outer ring light spot is formed. As Figure 6 shown, the inner ring light spot is composed of six light spots at the vertices of the smaller regular hexagon in the six-pointed star structure, and the outer ring light spot is composed of six light spots at the vertices of the larger regular hexagon in the six-pointed star structure. The smaller and larger regular hexagons are concentric but have a rotational difference, so it can be visually observed as a six-pointed star structure. Among them, the inner ring light spot is formed by the reflected light rays on the side of the reflection through-slot 111 with a larger opening angle; the outer ring light spot is formed by the reflected light rays on the side of the reflection through-slot 111 with a smaller opening angle.

[0052] In this embodiment, the six-pointed star reflective film further includes a reflective film 2, and the reflective film 2 is disposed on the reflective microstructure 1. The material of the reflective film 2 includes: one or a combination of silica, titanium dioxide, zirconium oxide, and titanium trioxide pentoxide.

[0053] In this embodiment, due to the central symmetry of the regular hexagon, taking the reflection through-slot 111 in the direction of the diagonal of one vertex as an example to illustrate the processing of the reflective microstructure 1, the V-shaped opening angle of the reflection through-slot 111 along the main diagonal direction of the hexagonal micro-unit 11 corresponds to Figure 4 Φ in Figure 5 , and the V-shaped opening angle of the reflection through-slot 111 along the 11th diagonal direction of the hexagonal micro-unit 11 corresponds to Θ in

[0054] . The values of Θ and Φ determine the shapes of the inner ring light spot and the outer ring light spot of the six-pointed star structure.When processing the reflective microstructure 1, it can be imprinted by a preset shape mold, and the mold is processed by a cutting tool. In order to improve the processing stability and reduce the processing error, a diamond cutting tool with the same angles as Θ and Φ should be used for processing. During processing, a reflection through groove 111 in one direction is obtained by sequentially processing the processing surface from three angles: one main diagonal direction and two sub-diagonal directions of one vertex of a regular hexagonal micro-unit 11. For a regular hexagonal micro-unit 11, the starting point needs to be converted, and a total of nine tool paths are required. For the entire surface, there are nine tool paths in nine directions.

[0055] The present utility model also provides an electronic product backplane, comprising:

[0056] A backplane body;

[0057] A transparent layer 3, the hexagonal star reflective film as described above, and a cover bottom layer 4 are sequentially stacked and adhered on the backplane body; the reflective microstructure 1 of the hexagonal star reflective film is used to generate a hexagonal star structure pattern, the reflective film 2 in the hexagonal star reflective film is used to reflect light, the transparent layer 3 is used to protect the hexagonal star reflective film; the cover bottom layer 4 is used to protect the backplane main body.

[0058] In this embodiment, the hexagonal star reflective film covers all areas of the backplane body and is closely attached to the cover bottom layer.

[0059] In this embodiment, the transparent layer is a composite material layer made of polycarbonate (PC) and polymethyl methacrylate (PMMA) through co-extrusion or other composite processes, which has excellent transparency and high surface hardness.

[0060] In this embodiment, the electronic product backplane can be applied to a variety of electronic products, including but not limited to: mobile phones, tablet computers, computer devices, etc.

[0061] For the electronic product backplane of the present utility model, the hexagonal star reflective film as described above is provided on the backplane body. With its unique pattern and reflective effect, the hexagonal star reflective film not only adds a visual highlight to the electronic product backplane, making the product more recognizable and attractive, enhancing the visual effect and user experience of the product, and providing more design space and flexibility for manufacturers. In addition, due to the characteristics of the hexagonal star reflective film such as convenient design, easy mold forming, and relatively controllable cost, the production cost of electronic products is reduced. Secondly, the hexagonal star reflective film has high wear and scratch resistance, and can effectively protect the electronic product backplane from wear and scratches during daily use and carrying. Moreover, the hexagonal star reflective film also has heat insulation performance, can reduce the heat generated by direct sunlight, lower the internal temperature of the electronic product, thereby reducing energy consumption and extending the battery life. Finally, the hexagonal star reflective film, as a non-conductive material, will not interfere with signal transmission, and helps to maintain the stability and clarity of the device signal.

[0062] In this embodiment, after processing a mold with surface microstructures, a film layer of the reflective microstructure 1 is obtained by the UV transfer method. The film layer of the reflective microstructure 1 is generally made of PC material. The film layer of the reflective microstructure 1 can be the side of embossing or the film layer on the side of the mold obtained by re-embossing. Whichever it is, a reflective film 2 needs to be vapor-deposited on the surface to make the surface have reflective characteristics. The materials of the reflective film 2 include one or a combination of silica, titanium dioxide, zirconium oxide, and titanium trioxide. The reflective film 2 and the reflective microstructure 1 form a six-pointed star reflective film. The six-pointed star reflective film is placed on the printed transparent layer 3, and then after being printed on the cover bottom layer 4, it is shaped by a 3D forming process. After hardening one side of the transparent layer 3, the backplane of the final electronic product is obtained by CNC machining.

[0063] In this embodiment, CNC machining is a technology that uses a computer program to control a machine tool for part processing. Its working principle is to import the part drawings drawn in CAD (Computer Aided Design) software into the control system of the CNC machining machine tool. The control system performs digital quantization processing, and then controls the movement trajectory of the machining machine tool through a computer to achieve the purpose of precise machining.

[0064] In this embodiment, a camera reserved hole is also provided on the backplane body. In this way, the camera module on the electronic product can be conveniently installed and disassembled, ensuring that the camera module can be closely attached to the backplane body after installation, maintaining the overall aesthetics, and facilitating subsequent maintenance and upgrade.

[0065] In summary, the present application provides a six-pointed star reflective film and an electronic product backplane. Due to the characteristics of the six-pointed star reflective film such as convenient design, easy mold forming, and relatively controllable cost, while reducing the production cost, it adds a visual highlight to the electronic product backplane, making the product more recognizable and attractive, enhancing the visual effect and user experience of the product, and providing more design space and flexibility for manufacturers. Moreover, the six-pointed star reflective film has high wear and scratch resistance, which can effectively protect the electronic product backplane from wear and scratches during daily use and carrying. Furthermore, the six-pointed star reflective film also has heat insulation performance, which can reduce the heat generated by direct sunlight, lower the internal temperature of the electronic product, thereby reducing energy consumption and extending the battery life. Finally, as a non-conductive material, the six-pointed star reflective film will not interfere with signal transmission, helping to maintain the stability and clarity of the device signal. Therefore, the present utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0066] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A six-pointed star reflective film, characterized in that, The hexagram reflective film includes a reflective microstructure (1), and the reflective microstructure (1) includes hexagonal micro-units (11) arranged in a uniform circular pattern in the row and column directions. A plurality of reflection through-grooves (111) are provided on each hexagonal micro-unit (11), and the directions of the reflection through-grooves (111) are respectively along the main diagonal direction and the secondary diagonal direction of the hexagonal micro-unit (11). Among them, when the reflective microstructure (1) is irradiated by a point light source, the light emitted by the point light source forms six inner ring light spots after being reflected by the reflection through-grooves (111) along the main diagonal direction in different hexagonal micro-units (11), and the light emitted by the point light source forms six outer ring light spots after being reflected by the reflection through-grooves (111) along the secondary diagonal direction in different hexagonal micro-units (11). The inner ring light spots and the outer ring light spots form a hexagram structure.

2. The hexagram reflective film according to claim 1, characterized in that, The reflection through-groove (111) is a V-shaped through-groove.

3. The hexagram reflective film according to claim 1, characterized in that, The angular range of the reflection through-groove (111) along the main diagonal direction of the hexagonal micro-unit (11) is 130° - 160°.

4. The hexagram reflective film according to claim 1, wherein The angular range of the reflection through-groove (111) along the secondary diagonal direction of the hexagonal micro-unit (11) is 130° - 150°.

5. The six-pointed star reflective film according to claim 1, wherein, The depth range of the reflection through-groove (111) is 10 - 15 μm.

6. The hexagram reflective film according to claim 1, wherein, The angle of the reflection through-groove (111) along the main diagonal direction of the hexagonal micro-unit (11) is greater than the angle of the reflection through-groove (111) along the secondary diagonal direction of the hexagonal micro-unit (11).

7. The hexagram reflective film according to claim 1, wherein The hexagram reflective film further includes a reflective film (2), and the reflective film (2) is disposed on the reflective microstructure (1).

8. The hexagram reflective film according to claim 7, wherein, The material of the reflective film (2) includes one or a combination of silica, titanium dioxide, zirconium oxide, and titanium trioxide.

9. A backplane of an electronic product, characterized in that Including: A backplane body; A transparent layer (3), the hexagram reflective film according to any one of claims 1 - 8, and a cover bottom layer (4) are sequentially laminated and adhered on the backplane body; the reflective microstructure (1) of the hexagram reflective film is used to generate a hexagram structure pattern, the reflective film (2) in the hexagram reflective film is used to reflect light, the transparent layer (3) is used to protect the hexagram reflective film; the cover bottom layer (4) is used to protect the backplane body.

10. The backplane of the electronic product according to claim 9, characterized in that, A camera reserved hole is further provided on the backplane body.

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