Peep-proof protective film
By designing an hourglass-type light channel and an anti-peeping protective film with an inclined surface structure, the problems of low light transmittance and dizziness in the prior art are solved, and the clear display and high brightness of the screen are achieved at different angles.
Patent Information
- Application Number
- CN202422557218.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing anti-peep protection film has a significant grid impact on the display effect when the device shakes, and it is low in light transmission and it is difficult to see the screen content clearly in darker environments.
Using a grating structure design, the light channel gradually narrows on the side facing the screen and gradually widens on the side facing the screen. Combining the inclined surface and light-transmitting material, an hourglass-type light channel is formed to achieve light convergence and scattering.
Improves screen brightness and light transmittance, reduces dizziness, and ensures that the display effect is stable and clear at different angles.
Smart Images
Figure CN223180432U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-peeping films, in particular to an anti-peeping protection film. Background Art
[0002] At present, the common anti-peeping protection films on the market mainly adopt rectangular or trapezoidal grating structures to achieve the anti-peeping effect. The rectangular or trapezoidal grating structures can prevent the light from the side from entering the screen, and the light can only penetrate into the screen from the gaps when facing the screen directly. When the device shakes and the angle deviates during use, obvious grids will be generated on the anti-peeping protection film, which will affect the display effect of the screen. In addition, the adopted rectangular or trapezoidal grating structures have a strong blocking effect on light, and only a small amount of light can pass through the anti-peeping film into the screen, with a low light transmittance, resulting in a dim display effect. Especially in a dim environment, it is difficult for users to see the content on the screen clearly. Summary of the Utility Model
[0003] Therefore, in order to overcome at least some of the defects and deficiencies in the prior art, the embodiments of the present utility model provide an anti-peeping protection film, which can increase the light transmittance and reduce the edge dizziness while not affecting the anti-peeping effect.
[0004] Specifically, an anti-peeping protection film provided by an embodiment of the present utility model is used to cover an electronic screen. The anti-peeping protection film includes: a grating structure, and a plurality of the grating structures are arranged at intervals in the anti-peeping protection film, and the gaps between two adjacent grating structures form light channels. On the side of the light channels facing the electronic screen, the width of the light channels gradually becomes smaller in the direction away from the electronic screen, and on the side of the light channels facing away from the electronic screen, the width of the light channels gradually becomes smaller in the direction close to the electronic screen.
[0005] In an embodiment of the present application, the light channels include a first channel and a second channel that communicate with each other. The first channel is located on the side of the light channels facing away from the electronic screen, and the second channel is located on the side of the light channels facing the electronic screen. The maximum width of the second channel is less than or equal to the maximum width of the first channel.
[0006] In an embodiment of the present application, the grating structure includes a first structure and a second structure; the gaps between two adjacent first structures form a first channel, and the gaps between two adjacent second structures form a second channel.
[0007] In an embodiment of the present application, the anti-peeping protective film further includes a base film. The first structure is located on a side of the base film facing away from the electronic screen. The first structure has two first inclined surfaces forming the light channel, and the two first inclined surfaces are inclined in a direction approaching each other. The second structure is located on a side of the base film facing the electronic screen. The second structure has two second inclined surfaces forming the light channel, and the two second inclined surfaces are inclined in a direction approaching each other.
[0008] In an embodiment of the present application, the inclination angle formed by the first inclined surface and the base film is less than or equal to the inclination angle formed by the second inclined surface and the base film.
[0009] In an embodiment of the present application, the cross-section of the first structure perpendicular to the width direction of the base film is a polygonal structure or an arc structure. The cross-section of the second structure perpendicular to the width direction of the base film is a polygonal structure or an arc structure.
[0010] In an embodiment of the present application, the first structure and the second structure are symmetric structures, or the grating structure is a rhombic structure.
[0011] In an embodiment of the present application, the cross-section of the first structure perpendicular to the width direction of the base film is a triangular structure, and the cross-section of the second structure perpendicular to the width direction of the base film is an arc structure.
[0012] In an embodiment of the present application, the anti-peeping protective film includes a light-transmitting material, and the light-transmitting material is filled in the gaps between the plurality of grating structures.
[0013] In an embodiment of the present application, the anti-peeping protective film includes a substrate, a transparent plastic layer, and a silica gel layer. The base film is located between the substrate and the transparent plastic layer, and the silica gel layer is located on a side of the transparent plastic layer away from the base film.
[0014] As can be seen from the above, the above technical features of the present utility model can have one or more of the following beneficial effects: The light channels formed by the spaced arrangement of the plurality of grating structures are in an hourglass shape. On the side of the light channel facing the electronic screen, the channel width gradually becomes smaller in the direction away from the electronic screen, which converges the light, and can improve the light brightness when directly viewing the screen from the front, making the screen display clearer and brighter, and providing a better visual experience for the user. On the side of the light channel facing away from the electronic screen, the channel width gradually becomes smaller in the direction approaching the electronic screen, and when scattering, the light is distributed in a larger area, thereby improving the light transmittance and increasing the screen brightness. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0016] Figure 1 A decomposition diagram of an anti-peeping protective film provided by an embodiment of the present utility model;
[0017] Figure 2 For Figure 1 A schematic structural diagram of a light channel formed by the grating structure in
[0018] Figure 3 For Figure 1 A cross-sectional view of a partial grating structure in
[0019] Figure 4 A cross-sectional view of an anti-peeping protective film provided by another embodiment;
[0020] Figure 5 For Figure 4 A cross-sectional view of a partial grating structure in
[0021] Figure 6 For Figure 4 A schematic diagram of the included angles formed by the first structure and the second structure and the base film in
[0022] Figure 7 A decomposition diagram of an anti-peeping protective film provided by another embodiment;
[0023] Figure 8 For Figure 7 A cross-sectional view of a partial grating structure in
[0024] Figure 9 A decomposition diagram of an anti-peeping protective film provided by another embodiment;
[0025] Figure 10 A decomposition diagram of an anti-peeping protective film provided by another embodiment;
[0026] Figure 11 For Figure 1 A top view of the anti-peeping protective film in
[0027]
Main reference numeral description
[0028] 1: Protective film; 10: Anti-peeping layer; 11: Base film; 12: Grating structure; 121: First structure; 1211: First inclined surface; 122: Second structure; 1221: Second inclined surface; 13: Light channel; 131: First channel; 132: Second channel; 14: Translucent material; 15: Substrate; 16: Transparent plastic layer; 17: Silicone layer; 18: Optical transparent adhesive; 2: Electronic screen. Detailed implementation mode
[0029] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments described in the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] It should be noted that the term "vertical" involved in the embodiments of the utility model and the claims refers to an included angle of 90° between two elements or a deviation of -5° to +5°.
[0031] In the embodiments of the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.
[0032] In this embodiment, referring to <x Figure 1 、 Figure 2 and Figure 3 As shown, an anti-peeping protective film 1 provided in this embodiment is used to cover an electronic screen 2. The anti-peeping protective film includes: a grating structure 12. A plurality of the grating structures 12 are arranged at intervals in the anti-peeping protective film 1, and a gap between two adjacent grating structures 12 forms a light channel 13. On the side of the light channel 13 facing the electronic screen 2, the width of the light channel 13 gradually decreases in the direction away from the electronic screen 2. On the side of the light channel 13 facing away from the electronic screen 2, the width of the light channel 13 gradually decreases in the direction approaching the electronic screen 2.
[0033] Specifically, when the anti-peeping protective film 1 is covered on the electronic screen 2, for example, the electronic screen 2 can be a mobile phone screen, a computer screen, etc. Referring to Figure 3As shown, it should be noted that the arrows in the figure indicate the paths of light convergence and divergence. The side of the light channel 13 facing the electronic screen 2 is the light incident surface, and the side facing away from the electronic screen 2 is the light exit surface. The light channel 13 presents an hourglass shape with wide ends and a narrow middle, perpendicular to the light incident surface and the light exit surface of the base film 11. Among them, on the side of the light channel 13 facing the electronic screen 2, the channel width gradually decreases in the direction towards the light incident surface of the base film 11, forming a light convergence opening, which has a converging effect on light. On the side of the light channel 13 facing away from the electronic screen 2, the channel width gradually increases in the direction away from the light exit surface of the base film 11, providing a larger distribution space for light scattering, making the brightness of the screen more uniform, and thus improving the brightness of the screen.
[0034] During use, the screen light converges at the light channel 13 on the side of the light incident surface. At this time, when looking directly at the screen from the front, the light brightness can be increased, making the screen display clearer and brighter. The converged light then scatters from the light channel 13. Due to the change in its channel width, the light can spread more evenly when passing through the grating structure 12, enabling the light to be distributed in a larger area, maintaining a good anti-peeping effect while improving the light transmittance. Exemplarily, referring to Figure 6 As shown, the maximum width D4 of the grating structure 12 is 6 - 10 μm.
[0035] A relatively small minimum width D3 of the light channel 13 enables the screen content to be clearly visible only within the front angle range. This can effectively block the entry of side light, preventing the dizziness caused by the simultaneous entry of light from multiple angles into the eyes. At the same time, an appropriate minimum width D3 can make the light pass through the front of the screen more concentratedly after multiple reflections and refractions, reducing light scattering, making the front display of the screen more stable, and reducing the risk of dizziness. Exemplarily, referring to Figure 2 As shown, the minimum width D3 of the light channel 13 can be 2 - 6 μm.
[0036] A relatively high maximum height H of the grating structure 12 can better block the side-incident light. When light shines from the side, the relatively high grating structure 12 prevents the light from bypassing the grating structure 12 and entering the human eye. This not only enhances the anti-peeping effect but also reduces the dizziness caused by side light interference. In addition, the change in the maximum height H of the grating structure 12 also changes the refraction angle of the light on the surface of the grating structure 12, enabling the front-incident light to pass through at the best angle, while the side light undergoes a greater degree of refraction or reflection, further optimizing the light distribution and reducing the occurrence probability of dizziness. Exemplarily, referring to Figure 2 As shown, the maximum height H of the grating structure 12 is 70 - 80 μm.
[0037] In addition, the gray level of the grating structure 12 determines the degree of absorption and blocking of light. The grating structure 12 with a higher gray level can better absorb the light incident from the side. When light shines on the screen from a side angle, the grating structure 12 with a high gray level will absorb a large amount of this light, making it difficult to see the screen content from the side and reducing the dizziness that may be caused by too strong side light. At the same time, from the front view angle, an appropriate gray level can ensure that a certain amount of light passes through without making the screen appear too dazzling, thereby reducing the possibility of causing dizziness.
[0038] In an embodiment of the present application, referring to Figure 2 , Figure 3 and Figure 5 shown, the light channel 13 includes a first channel 131 and a second channel 132 that are connected to each other. The first channel 131 is located on the side of the light channel 13 facing away from the electronic screen 2, and the second channel 132 is located on the side of the light channel 13 facing the electronic screen 2. The maximum width D1 of the second channel 132 is less than or equal to the maximum width D2 of the first channel 131.
[0039] Specifically, the second channel 132 is located on the light incident surface. When light enters the second channel 132 from the direction of the electronic screen 2, due to the gradually narrowing channel, the light will be restricted and guided by the channel wall, and the light entering the channel from various angles will gradually approach the central axis as the channel gradually narrows, thereby achieving the convergence of light. The first channel 131 is located on the light exit surface. Since the channel gradually widens in the direction away from the electronic screen 2, the distribution space of the light expands and begins to spread in different directions, thereby achieving the scattering of light. When the maximum width D1 of the second channel 132 is less than the maximum width D2 of the first channel 131, the light channel 13 presents that the second channel 132, that is, the light incident surface channel, is slightly narrower, and the first channel 131, that is, the light exit surface channel, is slightly wider. The light converges after multiple reflections in the narrow channel, making the light more concentrated when directly viewing the screen from the front. The wide channel makes the light easier to spread, and the light is distributed in a larger area, increasing the screen brightness.
[0040] In an embodiment of the present application, referring to Figure 3 and Figure 8 shown, the grating structure 12 includes a first structure 121 and a second structure 122. The gap between two adjacent first structures 121 forms the first channel 131, and the gap between two adjacent second structures 122 forms the second channel 132.
[0041] In the process of manufacturing, the grating structure 12 includes a first structure 121 and a second structure 122 respectively located on both sides of the base film 11. By printing the grating structure 12 on both sides of the base film 11 to form an hourglass-shaped light channel 13, it is easier to perform printing processing, so that the protective film 1 can improve the light transmittance while ensuring the anti-peeping effect during use.
[0042] In an embodiment of the present application, the anti-peeping protective film 1 further includes a base film 11. The first structure 121 is located on the side of the base film 11 facing away from the electronic screen 2. The first structure 121 has two first inclined surfaces 1211 that form the light channel 13, and the two first inclined surfaces 1211 are inclined in a direction approaching each other. The second structure 122 is located on the side of the base film 11 facing the electronic screen 2. The second structure 122 has two second inclined surfaces 1221 that form the light channel 13, and the two second inclined surfaces 1221 are inclined in a direction approaching each other.
[0043] Refer to Figure 5 As shown, the cross-section of the first structure 121 perpendicular to the width direction of the base film 11 is triangular, and the cross-section of the second structure 122 perpendicular to the width direction of the base film 11 is trapezoidal, both presenting the first inclined surface 1211 and the second inclined surface 1221. The first inclined surface 1211 and the second inclined surface 1221 are necessary factors for forming the light channel 13, making the light channel 13 present an hourglass shape, where the light first converges and then scatters. The light channel formed by the inclined surfaces of the rhombus structure can effectively limit the light on the side from entering. From the side view, after multiple reflections and refractions of the light passing through the inclined surface, the intensity is greatly weakened, making it difficult to peep the screen content, enhancing the anti-peeping effect and protecting the privacy of users.
[0044] In an embodiment of the present application, the inclined angle K1 formed by the first inclined surface 1211 and the base film 11 is less than or equal to the inclined angle K2 formed by the second inclined surface 1221 and the base film 11. Refer to Figure 5 and Figure 6As shown, it should be noted that the acute angle formed by the first inclined surface 1211 and the base film is the inclined angle K1, and the acute angle formed by the second inclined surface 1221 and the base film is the inclined angle K2. The smaller the inclined angle K1, the larger the maximum width D2 of the first channel 131. Light scatters from the first channel 131, giving a wider scattering angle, enabling the light to be distributed over a larger range, thereby improving the anti-peeping effect while avoiding the glare caused by sudden light changes. The larger the inclined angle K2, the smaller the maximum width D1 of the second channel 132. And when the inclined angle K2 is greater than the inclined angle K1, it shows that the maximum width D1 of the second channel 132 is smaller than the maximum width D2 of the first channel 131, enabling the scattered light after convergence to be distributed over a larger range. By setting a reasonable inclination angle, the brightness of the screen can be improved while ensuring the anti-peeping effect.
[0045] In an embodiment of the present application, the cross-section of the first structure 121 perpendicular to the width direction of the base film 11 is a polygonal structure or an arc structure. The cross-section of the second structure 122 perpendicular to the width direction of the base film 11 is a polygonal structure or an arc structure.
[0046] Refer to Figure 1 and Figure 2 As shown, the cross-sections of the first structure 121 and the second structure 122 perpendicular to the width direction of the base film 11 are triangles, and the maximum width D1 of the second channel 132 is equal to the maximum width D2 of the first channel 131. Refer to Figure 4 and Figure 5 As shown, the cross-sections of the first structure 121 and the second structure 122 perpendicular to the width direction of the base film 11 are both polygonal structures. Among them, the cross-section of the first structure 121 perpendicular to the width direction of the base film 11 is a triangle, the cross-section of the second structure 122 perpendicular to the width direction of the base film 11 is a trapezoid, and the maximum width D2 of the first channel 131 is greater than the maximum width D1 of the second channel 132. Refer to Figure 7 and Figure 8 As shown, the cross-section of the first structure 121 perpendicular to the width direction of the base film 11 is a triangle, the cross-section of the second structure 122 perpendicular to the width direction of the base film 11 is an arc, and the maximum width D2 of the first channel 131 is greater than the maximum width D1 of the second channel 132. Refer to Figure 9 As shown, the cross-sections of the first structure 121 and the second structure 122 perpendicular to the width direction of the base film 11 are both trapezoids, and the maximum width D2 of the first channel 131 is equal to the maximum width D1 of the second channel 132. Refer to Figure 10As shown, the cross-section of the first structure 121 perpendicular to the width direction of the base film 11 is trapezoidal, the cross-section of the second structure 122 perpendicular to the width direction of the base film 11 is an arc structure, and the maximum width D1 of the second channel 132 is less than the maximum width D2 of the first channel 131.
[0047] Specifically, the cross-sections of the first structure 121 and the second structure 122 perpendicular to the width direction of the base film 11 can be any combination of polygonal structures or arc structures, while satisfying that the maximum width D2 of the first channel 131 is greater than or equal to the maximum width D1 of the second channel 132. The most suitable structural combination can be selected according to the size and shape of different electronic device screens to improve the adaptability of the privacy screen film. At the same time, free combinations can be made according to privacy requirements and light transmittance requirements to adapt to different environments and user needs.
[0048] In the embodiments of the present application, the first structure 121 and the second structure 122 are symmetric structures, or the grating structure 12 is a rhombus structure. Refer to Figure 1 As shown, the cross-sections of the first structure 121 and the second structure 122 of the grating structure 12 perpendicular to the width direction of the base film 11 are both triangular. Refer to Figure 9 As shown, the cross-sections of the first structure 121 and the second structure 122 of the grating structure 12 perpendicular to the width direction of the base film 11 are both trapezoidal. If the first structure 121 is the same as the second structure 122, the width, shape, etc. of the formed light channels 13 will maintain good consistency, so that when light passes through the privacy protection film 1, no matter from which direction it is incident, its propagation path and the optical effects received are highly consistent. In actual use, this means that no matter from which angle the user views the screen, a relatively stable visual effect can be obtained, reducing the changes in brightness, color, etc. caused by different angles. At the same time, the stable channel characteristics help to improve the light transmittance, making the screen display clearer and brighter. In addition, in the process of process manufacturing, the symmetric structure can reuse a set of molds, reducing the workload of mold design and manufacturing, improving production efficiency and saving costs at the same time.
[0049] In the embodiments of the present application, refer to Figure 7 and Figure 8As shown, it should be noted that the arrows in the figure indicate the paths of light convergence, divergence, and reflection. The cross-section of the first structure 121 perpendicular to the width direction of the base film 11 is a triangular structure, and the cross-section of the second structure 122 perpendicular to the width direction of the base film 11 is an arc structure. The second structure 122 is an arc-shaped structure and is close to the electronic screen 2. The arc structure can emit more light in the first direction, increasing the light transmittance when using the mobile phone face-on and making it clearer to use. At the same time, the arc structure can effectively reduce the generation of glare. Since the light propagates more smoothly on the arc surface without sharp angles and edges, the impact of glare on the user's vision is reduced.
[0050] In an embodiment of the present application, referring to Figure 11 is a top view of the finished product of the anti-peeping protective film 1. The anti-peeping protective film 1 further includes a light-transmitting material 14, and the light-transmitting material 14 is filled in the gaps between the plurality of grating structures 12. The light-transmitting material 14 is filled in the gaps between the plurality of grating structures 12, enabling the protective film 1 to have an anti-peeping function while ensuring the light transmittance to the greatest extent. Secondly, the overall structure of the protective film 1 becomes more compact and uniform, ensuring the consistency of the anti-peeping effect on the entire surface of the protective film 1.
[0051] In an embodiment of the present application, referring to Figure 1 、 Figure 4 、 Figure 7 、 Figure 9 and Figure 10 As shown, the anti-peeping protective film 1 includes a substrate 15, a transparent plastic layer 16, and a silicone layer 17. The base film 11 is located between the substrate 15 and the transparent plastic layer 16, and the silicone layer 17 is located on the side of the transparent plastic layer 16 away from the base film 11. Specifically, the base film 11 combines with the grating structure 12 to form an anti-peeping layer 10. The anti-peeping protective film 1 further includes an optical transparent adhesive 18 and / or a jelly glue layer, etc., which can be located between the substrate 15 and the anti-peeping layer 10, or between the transparent plastic layer 16 and the anti-peeping layer 10. The optical transparent adhesive 18 can ensure that there is almost no loss of light when passing through the protective film 1, maintaining the high definition and high color reproduction of the screen. The transparent plastic layer has good abrasion resistance, chemical corrosion resistance, and high temperature resistance, further enhancing the protective ability of the protective film 1, preventing the screen from being scratched by sharp objects, and resisting the erosion of various chemical substances that may be encountered in daily use.
[0052] In summary, an hourglass-shaped light channel 13 is formed based on the different shapes of the grating structure 12, which can effectively control the propagation direction of light, making it difficult for the light entering from the side to penetrate the protective film 1, thus achieving a good anti-peeping function. When the light enters the channel and the grating structure 12 and undergoes specific refraction and reflection, more light can pass through the protective film 1 from the front, thereby improving the brightness and clarity of the screen. While ensuring the anti-peeping effect, the overall light transmittance of the protective film 1 is improved, comprehensively enhancing the user experience.
[0053] In addition, it can be understood that the foregoing embodiments are only exemplary illustrations of the present utility model. On the premise that there is no conflict in technical features, no contradiction in structure, and no violation of the invention purpose of the present utility model, the technical solutions of each embodiment can be arbitrarily combined and used.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present utility model.
Claims
1. An anti-peeping protective film (1), characterized in that, For covering on an electronic screen (2), the anti-peeping protection film (1) includes: A grating structure (12), a plurality of the grating structures (12) are arranged at intervals in the anti-peeping protection film (1), and a gap between two adjacent grating structures (12) forms a light channel (13). On the side of the light channel (13) facing the electronic screen (2), the width of the light channel (13) gradually decreases in the direction away from the electronic screen (2). On the side of the light channel (13) facing away from the electronic screen (2), the width of the light channel (13) gradually decreases in the direction approaching the electronic screen (2).
2. The anti-peeping protection film (1) according to claim 1, wherein The light channel (13) includes a first channel (131) and a second channel (132) that are interconnected. The first channel (131) is located on the side of the light channel (13) facing away from the electronic screen (2), and the second channel (132) is located on the side of the light channel (13) facing the electronic screen (2). The maximum width of the second channel (132) is less than or equal to the maximum width of the first channel (131).
3. The anti-peeping protective film (1) according to claim 1, characterized in that, The grating structure (12) includes a first structure (121) and a second structure (122); a gap between two adjacent first structures (121) forms a first channel (131), and a gap between two adjacent second structures (122) forms a second channel (132).
4. The anti-peeping protective film (1) according to claim 3, characterized in that, The anti-peeping protection film (1) further includes a base film (11). The first structure (121) is located on the side of the base film (11) facing away from the electronic screen (2). The first structure (121) has two first inclined surfaces (1211) that form the light channel (13), and the two first inclined surfaces (1211) are inclined in a direction approaching each other. The second structure (122) is located on the side of the base film (11) facing the electronic screen (2). The second structure (122) has two second inclined surfaces (1221) that form the light channel (13), and the two second inclined surfaces (1221) are inclined in a direction approaching each other.
5. The anti-peeping protective film (1) according to claim 4, characterized in that, The inclined angle formed by the first inclined surface (1211) and the base film (11) is less than or equal to the inclined angle formed by the second inclined surface (1221) and the base film (11).
6. The anti-peeping protective film (1) according to claim 4, characterized in that, The cross-section of the first structure (121) perpendicular to the width direction of the base film (11) is a polygonal structure or an arc structure; the cross-section of the second structure (122) perpendicular to the width direction of the base film (11) is a polygonal structure or an arc structure.
7. The anti-peeping protective film (1) according to claim 6, characterized in that, The first structure (121) and the second structure (122) are of a symmetric structure, or the grating structure (12) is of a rhombic structure.
8. The anti-peeping protective film (1) according to claim 4, characterized in that, The cross-section of the first structure (121) perpendicular to the width direction of the base film (11) is a triangular structure, and the cross-section of the second structure (122) perpendicular to the width direction of the base film (11) is an arc structure.
9. The anti-peeping protective film (1) according to claim 1, characterized in that, The anti-peeping protective film (1) further includes a light-transmitting material (14), and the light-transmitting material (14) is filled in the gaps between the plurality of grating structures (12).
10. The anti-peeping protective film (1) according to any one of claims 4 to 8, characterized in that, The anti-peeping protective film (1) includes a substrate (15), a transparent plastic layer (16) and a silica gel layer (17). The base film (11) is located between the substrate (15) and the transparent plastic layer (16), and the silica gel layer (17) is located on the side of the transparent plastic layer (16) away from the base film (11).