Anti-glare film and method of manufacturing the same, display apparatus

Abstract

This application provides an anti-glare film, its manufacturing method, and a display device. The anti-glare film is used on the display screen of a display device. The anti-glare film includes a laminated light-transmitting base layer and an anti-glare layer. The anti-glare layer has a reference plane parallel to the surface of the light-transmitting base layer, and the anti-glare layer has a plurality of protrusions that protrude away from the light-transmitting base layer relative to the reference plane. By setting the surface roughness of the surface of the anti-glare layer with protrusions, the focal angle of the outer contour line of the protrusion relative to the reference plane in cross-section, and the ratio of the chord length to the maximum height of the contour line of the protrusion located on the reference plane in cross-section within a predetermined range, the anti-glare film can effectively maintain the anti-reflective glare characteristics of the surface with protrusions while avoiding the problem of excessive light scattering and resulting in a whitening appearance.

Description

Technical Field

[0001] This application relates to the field of image display, and more specifically to an anti-glare film for display devices, a method for manufacturing the same, and a display device including the anti-glare film. Background Technology

[0002] Existing display devices typically use a flat panel made of a light-transmitting material (e.g., glass or plastic) for external protection. Under ambient light (such as outdoor sunlight and indoor artificial light), the visual quality of these displays is easily affected by the reflected light from this panel. For example, when viewing the display in strong ambient light, the panel is prone to specular reflection, creating noticeable mirror images and interfering with the visual experience. Current solutions often involve increasing the surface roughness of the panel to scatter the light, reducing specular reflection and mitigating the negative impact on the display's visual quality. However, increasing the surface roughness can lead to excessive scattering of incident light. This can cause the display to appear washed out when no image is displayed, negatively affecting the device's appearance. Summary of the Invention

[0003] In view of this, one object of this application is to provide an anti-glare film and a method for manufacturing the same, which can effectively maintain the anti-reflective glare properties of the surface while avoiding the problem of excessive light scattering causing a white appearance. Another object of this application is to provide a display device including the above-mentioned anti-glare film.

[0004] Therefore, the technical solution adopted in this application is as follows.

[0005] In a first aspect, this application provides an anti-glare film for application on the display screen of a display device. The anti-glare film comprises a stacked light-transmitting base layer and an anti-glare layer, the anti-glare layer being disposed on the surface of the light-transmitting base layer.

[0006] The anti-glare layer has a reference plane parallel to the surface of the light-transmitting base layer. The anti-glare layer has multiple protrusions, each protruding away from the light-transmitting base layer relative to the reference plane. The surface roughness Ra of the surface of the anti-glare layer with the protrusions satisfies: 0.18 μm ≤ Ra ≤ 2.43 μm.

[0007] In any cross section taken from the protrusion perpendicular to the reference plane and passing through the highest point of the protrusion, the outer contour line of the protrusion relative to the reference plane is a curve. Let the focal angle of the outer contour line be θ, the chord length of the contour line of the protrusion on the reference plane be L, and the vertical height of the highest point relative to the reference plane be H. Then, 3°≤θ≤45° and 10≤L / H≤150 are satisfied.

[0008] By adopting the above technical solution, the anti-glare film can effectively maintain the anti-reflective glare properties of the surface with protrusions, while avoiding the problem of excessive light scattering and whitening caused by the surface with protrusions.

[0009] In one possible implementation according to the first aspect, 0.5um ≤ H ≤ 30um is also satisfied.

[0010] By adopting the above technical solution, the size of the protrusion of the anti-glare film is avoided from being too large, thereby further ensuring the anti-reflective glare characteristics of the anti-glare film and avoiding a white appearance.

[0011] In one possible implementation according to the first aspect, for each of the protrusions, there is only one highest point.

[0012] In any cross section taken from the protrusion perpendicular to the reference plane and passing through the highest point of the protrusion, the outer contour line of the protrusion has a first intersection point and a second intersection point with the reference plane. The height of the outer contour line increases monotonically from the first intersection point to the highest point, and decreases monotonically from the highest point to the second intersection point.

[0013] By adopting the above technical solution, a protrusion with a smooth curved surface shape can be formed with a simple structure.

[0014] In one possible implementation of the first aspect, the anti-glare film further includes an anti-reflection layer that at least covers the surface of the anti-glare layer where the protrusions are provided, for reducing the reflectivity of light incident on the anti-glare layer.

[0015] By adopting the above technical solution and setting an anti-reflection layer, the reflectivity of light incident on the surface of the anti-glare layer with protrusions can be reduced to below 3%, thereby improving the anti-reflective glare characteristics.

[0016] In one possible implementation of the first aspect, the thickness t of the antireflection layer is assumed to satisfy 100nm≤t≤1000nm.

[0017] By adopting the above technical solution and setting the thickness of the anti-reflection layer within a reasonable range, the reflectivity of incident light can be reduced without excessively increasing the thickness of the anti-glare film.

[0018] In one possible implementation of the first aspect, the anti-glare film further includes an anti-fingerprint layer covering the surface of the anti-reflective layer.

[0019] By adopting the above technical solution, the anti-glare film reduces the adhesion of fingerprints, making the surface easier to clean after it gets dirty.

[0020] In one possible implementation of the first aspect, the outline shape of each of the protrusions intersecting the reference plane is hexagonal, and the plurality of protrusions are arranged in a honeycomb pattern.

[0021] By adopting the above technical solution, the hexagonal protrusions arranged in this honeycomb pattern can improve the anti-glare effect.

[0022] In one possible implementation of the first aspect, the outline shape of each of the protrusions intersecting the reference plane is square, and the plurality of protrusions are arranged in a matrix array.

[0023] By adopting the above technical solution, the square protrusions arranged in this matrix array can improve the anti-glare effect.

[0024] Secondly, this application also provides a method for manufacturing the anti-glare film according to any one of the above solutions, wherein a layered adhesive material is arranged on the surface of a transparent substrate, and the protrusion is formed by pressing the adhesive material with a mold.

[0025] By adopting the above technical solution, an anti-glare film with protrusions of predetermined shape and size can be formed in a simple way, further ensuring the anti-reflective glare characteristics of the anti-glare film and avoiding whitening of the appearance.

[0026] In one possible embodiment according to the second aspect, a layered adhesive material is coated on the surface of a transparent substrate, the adhesive material being mixed with non-spherical particles through which the protrusions are formed.

[0027] By adopting the above technical solution, an anti-glare film with protrusions can be formed in another simple way.

[0028] In one possible implementation of the second aspect, the non-spherical particles are ellipsoidal particles, convex lens-shaped particles, or disc-shaped particles.

[0029] By adopting the above technical solution, it is beneficial to ensure that the dimensional parameters of the protrusion formed when another method is used meet the aforementioned range requirements.

[0030] In one possible embodiment according to the second aspect, the adhesive material is a UV-curable adhesive.

[0031] Beneficial effect: Facilitates curing after layered adhesive materials are applied to a transparent substrate.

[0032] In one possible implementation of the second aspect, an antireflection layer is formed by depositing multiple layers of inorganic material on the surface of the colloidal material in a vacuum environment using vapor deposition or sputtering methods; or by coating the surface of the colloidal material with hollow silicon spheres to form an antireflection layer.

[0033] By adopting the above technical solution, an anti-reflection layer can be formed using a simple and effective method, thereby reducing the reflectivity of the anti-glare film.

[0034] In one possible implementation of the second aspect, an anti-fingerprint layer is formed on the antireflective layer by vacuum deposition or wet spraying.

[0035] By adopting the above technical solution, an anti-fingerprint layer can be formed using a simple and effective method, thereby reducing the adhesion of fingerprints and making the surface easier to clean after it becomes dirty.

[0036] Thirdly, this application provides a display device comprising a display screen and an anti-glare film as described in any of the above embodiments, wherein the anti-glare film is disposed on the display screen.

[0037] By adopting the above technical solution, the display device has the same effect as the aforementioned anti-glare film.

[0038] These and other aspects of this application will become more apparent in the description of the following embodiments(s). Attached Figure Description

[0039] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0040] Figure 1A This is a schematic diagram showing the structure of an anti-glare film according to a first embodiment of this application, wherein hollow arrows indicate the direction of light propagation.

[0041] Figure 1B It shows Figure 1A A cross-sectional view of the protrusion of the anti-glare film in the image, where the section lines are omitted.

[0042] Figure 1C It shows Figure 1A A top-view schematic diagram of the anti-glare film in the image.

[0043] Figure 2 This is a cross-sectional view showing the protrusion of an anti-glare film according to a variant of the first embodiment of this application, wherein the cross-sectional lines are omitted.

[0044] Figure 3 This is a top view schematic diagram showing a variant of the anti-glare film according to the first embodiment of this application.

[0045] Figure 4 This is a top view schematic diagram showing a variant of the anti-glare film according to the first embodiment of this application.

[0046] Figure 5 This is a schematic diagram showing the curve of the scattering intensity incident on the anti-glare film as a function of the scattering angle, obtained from actual measurement experience. The vertical axis represents the scattering intensity, and the horizontal axis represents the scattering angle.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Translucent base layer; 2. Anti-glare layer; 2p protrusion; 2s reference surface

[0049] P1 First intersection point, P2 Second intersection point, P3 Highest point, O Focal point, T Thickness direction. Detailed Implementation

[0050] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0051] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0052] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0053] The structure of the anti-glare film according to various embodiments of this application will be described below with reference to the accompanying drawings.

[0054] (Anti-glare film according to the first embodiment of this application)

[0055] The anti-glare film according to this application is used to be applied to the display screen of a display device to effectively maintain the surface's anti-reflective glare properties while avoiding excessive light scattering that could cause a washed-out appearance. Therefore, as... Figure 1A As shown, the anti-glare film according to the first embodiment of this application includes a light-transmitting substrate 1 and an anti-glare layer 2. The light-transmitting substrate 1 and the anti-glare layer 2 are stacked together in the thickness direction T. The anti-glare layer 2 is disposed on the surface of the light-transmitting substrate 1. On the side away from the light-transmitting substrate 1, the anti-glare layer 2 has a reference plane 2s parallel to the surface of the light-transmitting substrate 1. The light-transmitting substrate 1 is also formed with a large number of tiny protrusions 2p, each protruding relative to the reference plane 2s in a direction away from the light-transmitting substrate 1. In this way, light incident on the surface of the anti-glare layer 2 with the protrusions 2p is scattered by the multiple protrusions 2p, thereby effectively maintaining the anti-reflective glare characteristics of the anti-glare film. Furthermore, in order to effectively maintain the anti-reflective glare characteristics of the anti-glare film while avoiding excessive scattering of light that causes a whitening appearance, this application has made the following research and improvements.

[0056] For the surface of the anti-glare layer 2 with multiple protrusions 2p, the surface roughness (profile arithmetic mean deviation) Ra of the anti-glare layer 2 satisfies: 0.18um≤Ra≤2.43um.

[0057] Furthermore, in this embodiment, each protrusion 2p has only one highest point relative to the reference plane 2s. For example... Figure 1B As shown, in any cross section taken from the highest point P3 of the protrusion 2p perpendicular to the reference plane 2s and passing through the reference plane 2s, the outer contour line of the protrusion 2p relative to the reference plane 2s is a circular arc curve. Let the focal angle of the outer contour line be θ, then it satisfies: 3°≤θ≤45°.

[0058] Furthermore, in this embodiment, the focal point O of the outer contour line is the center of the circle containing the arc curve. For example... Figure 1B As shown, in any cross-section taken from the protrusion 2p perpendicular to the reference plane 2s and passing through the highest point P3 of the protrusion 2p, let the chord length of the contour line of the protrusion 2p on the reference plane 2s be L, and the vertical height of the highest point P3 of the outer contour line relative to the reference plane 2s be H. Then, 10 ≤ L / H ≤ 150 is satisfied. Based on the above proportional relationship, in an optional scheme, it is also satisfied that 0.5um ≤ H ≤ 30um. In another optional scheme, it is also satisfied that 5um ≤ L ≤ 300um. With this setting, in any cross-section taken from the protrusion 2p perpendicular to the reference plane 2s and passing through the highest point P3 of the protrusion 2p, the outer contour line of the protrusion 2p forms a gentle arc shape, thereby reducing the surface that is tilted at a large angle relative to the reference plane 2s, and thus reducing the large-angle scattering.

[0059] In summary, by reasonably setting the surface roughness Ra of the surface of the anti-glare layer 2 with multiple protrusions 2p, the focal angle θ of the protrusions 2p in the above-mentioned arbitrary cross section, and the ratio L / H between the chord length and the maximum height of the protrusions 2p in the above-mentioned arbitrary cross section, the white appearance caused by the surface of the anti-glare layer 2 with protrusions 2p can be avoided.

[0060] Furthermore, in this embodiment, for each protrusion 2p, as... Figure 1B As shown, in any cross-section taken from the highest point P3 of the protrusion 2p, perpendicular to the reference plane 2s and passing through the highest point P3 of the protrusion 2p, the outer contour line of the protrusion 2p has a first intersection point P1 and a second intersection point P2 with the reference plane 2s. The height of the outer contour line monotonically increases from the first intersection point P1 to the highest point P3, and monotonically decreases from the highest point P3 to the second intersection point P2. In this way, it is not necessary to form a secondary concave-convex shape on the surface of the protrusion 2p; the above effect can be achieved simply by using the protrusion 2p with a smooth curved surface.

[0061] Furthermore, in this embodiment, as Figure 1C As shown, in the top view viewed in a direction perpendicular to the reference plane 2s, the outline shape of each protrusion 2p intersecting the reference plane 2s is hexagonal, and multiple protrusions 2p are arranged in a honeycomb pattern. This outline shape and arrangement of the protrusions 2p help to effectively maintain the surface's anti-reflective glare properties.

[0062] The anti-glare film according to the first embodiment of this application can be manufactured using the following method. First, a layered adhesive material (e.g., UV-curable adhesive) is disposed on the surface of a transparent substrate (e.g., made of plastic); then, a mold with a recess is mounted from the opposite side of the transparent substrate, such that the mold presses against the layered adhesive material; next, light is irradiated from the opposite side of the transparent substrate where the layered adhesive material is disposed, causing the adhesive material to cure; finally, the mold is removed, thereby forming a protrusion 2p with a predetermined shape and size by imprinting it onto the adhesive material.

[0063] By adopting the above solution, an anti-glare film is achieved that effectively maintains the anti-reflective glare properties of the surface while avoiding excessive light scattering that causes the display screen to appear white.

[0064] The structure of the anti-glare film according to a variant of the first embodiment of this application is described below.

[0065] In one variant, each protrusion 2p has only one highest point relative to the reference plane 2s. For example... Figure 2As shown, in any cross-section taken perpendicular to the reference plane 2s and passing through the highest point P3 of the protrusion 2p, the outer contour of the protrusion 2p is parabolic. In this variant, the surface roughness Ra, the focal angle θ, and the ratio L / H between the chord length and the maximum height satisfy the same conditions as described in the first embodiment. However, it should be noted that the focal point O of the parabolic outer contour is the center of the circle determined by the first intersection point P1, the second intersection point P2, and the highest point P3 where the outer contour intersects the reference plane 2s. In fact, since the outer surface contour of the protrusion 2p can be any curved surface shape such as a parabola, hyperboloid, or ellipsoid, the shape of the outer contour of the protrusion 2p can be varied in any cross-section taken perpendicular to the reference plane 2s and passing through the highest point P3 of the protrusion 2p, and the focal point corresponding to the outer contour can be determined by the above method.

[0066] In another variant, such as Figure 3 As shown, in the top view viewed in a direction perpendicular to the reference plane 2s, the outline shape of each protrusion 2p intersecting the reference plane 2s is square, and multiple protrusions 2p are arranged in a matrix array. This outline shape and arrangement of the protrusions 2p help to effectively maintain the surface's anti-reflective glare properties.

[0067] In yet another variant, such as Figure 4 As shown, in the top view viewed in the direction perpendicular to the reference plane 2s, the outline shape of each protrusion 2p intersecting the reference plane 2s is a parallelogram, and multiple protrusions 2p are arranged in rows.

[0068] In fact, in the top view viewed in the direction perpendicular to the reference plane 2s, the outline shape of the protrusion 2p intersecting the reference plane 2s can be set to any shape as needed, and the arrangement of these protrusions 2p can also be changed as needed.

[0069] The following describes an anti-glare film according to a second embodiment of this application.

[0070] (Anti-glare film according to the second embodiment of this application)

[0071] The basic structure of the anti-glare film according to the second embodiment of this application is the same as that of the anti-glare film according to the first embodiment of this application. Moreover, the surface roughness Ra, focal angle θ, and the ratio L / H between the chord length and the maximum height of the anti-glare film according to the second embodiment of this application satisfy the various conditions described in the first embodiment.

[0072] However, unlike the first embodiment, in this embodiment, the anti-glare film is manufactured as follows: A layered adhesive material (e.g., UV-curable adhesive) is coated on the surface of a transparent substrate (e.g., plastic). The adhesive material is mixed with non-spherical particles, through which protrusions 2p are formed. The non-spherical particles can be ellipsoidal particles, convex lens-shaped particles, disc-shaped particles, etc. Thus, the anti-glare film according to the second embodiment of this application can achieve the same effect as the anti-glare film according to the first embodiment of this application.

[0073] The above description has illustrated exemplary embodiments of this application, and the following supplementary explanation is provided.

[0074] i. It should be understood that, as long as there is no contradiction, different technical means in each embodiment can be combined to form various different technical solutions.

[0075] i. This application also provides a display device including a display screen and the aforementioned anti-glare film. The anti-glare film is disposed on the display screen. Alternatively, the anti-glare film covers the entire display screen. In this way, the anti-glare film can achieve anti-reflective glare while avoiding whitening.

[0076] ii. The anti-glare film of this application may also have an anti-reflection layer. In one optional embodiment, the anti-reflection layer is disposed on the surface of the anti-glare layer where the protrusions are provided. In another optional embodiment, the anti-reflection layer is disposed on the entire surface of the anti-glare film. The thickness t of the anti-reflection layer satisfies 100nm ≤ t ≤ 1000nm. By providing the anti-reflection layer, the reflectivity of light incident on the surface of the anti-glare layer where the protrusions are provided can be reduced to below 3%, thereby improving the anti-glare characteristics.

[0077] Furthermore, different methods can be used to form the aforementioned antireflective layer. In one alternative, multiple layers of inorganic material are deposited on the entire surface of the anti-glare film under vacuum conditions using evaporation or sputtering methods. In another alternative, hollow silicon spheres are coated onto the surface of an adhesive material, such as a UV-curable adhesive.

[0078] iv. The anti-glare film of this application may also have an anti-fingerprint layer. In one alternative, the anti-fingerprint layer covers the surface of the anti-reflective layer. In another alternative, the anti-fingerprint layer covers the entire surface of the anti-glare film. By providing the anti-fingerprint layer, the anti-glare film reduces the adhesion of fingerprints and makes the surface easier to clean after it becomes dirty.

[0079] Furthermore, different methods can be used to form the aforementioned anti-fingerprint layer. Specifically, the anti-fingerprint layer can be formed by vacuum deposition or wet spraying.

[0080] v. This application also establishes the following simulation model based on the above scheme for verification.

[0081] In a simulation model, the contour shape where the protrusions intersect the reference plane is hexagonal, and multiple protrusions are arranged in a honeycomb pattern. Furthermore, while keeping the contour shape and size of the protrusions' intersection with the reference plane constant, the height of the highest point of the protrusions is varied, and the scattering range of light incident on the surface of the anti-glare film with the protrusions is measured in the simulation model. From this, the following conclusions are drawn: While keeping the contour shape and size of the protrusions' intersection with the reference plane constant, the smaller the height of the highest point of the protrusion (or the gentler the curvature of the protrusion), the smaller the scattering angle of light incident on the surface of the anti-glare film with the protrusions, and the less whitening. Based on visual judgment, the degree of whitening is acceptable when the scattering angle is between 5° and 80°.

[0082] In another simulation model, while ensuring that the surface roughness of the surface of the anti-glare film with protrusions meets the range described in the above-described specific embodiments, the size of the protrusions is proportionally enlarged or reduced without changing their shape. In this simulation model, the scattering range of light incident on the surface of the anti-glare film with protrusions is measured. Therefore, the following conclusion is drawn: If the surface roughness of the surface of the anti-glare film with protrusions meets the range described in the above-described specific embodiments, then proportionally enlarging or reducing the size of the protrusions without changing their shape will not affect the scattering characteristics of the anti-glare film.

[0083] vi. Furthermore, based on practical measurement experience, such as Figure 5 As shown, when the surface produces mirror reflection, the scattering intensity is concentrated around 0 degrees and exhibits a pulsed distribution. To ensure the anti-glare properties of the anti-reflective glare film, the brightness reduction ratio at ±1° angle needs to be less than 10%. To ensure that the anti-glare film reduces whitening without affecting its anti-reflective glare properties, the following simulation model is established.

[0084] Specifically, in this simulation model, the contour shape where the protrusions intersect the reference plane is hexagonal, and multiple protrusions are arranged in a honeycomb pattern. While keeping the contour shape and size of the protrusions intersecting the reference plane constant (maximum chord length 100µm), by changing the height of the highest point of the protrusion, the focal angle, and the surface roughness, the corresponding scattering angle and the ±1° angular brightness reduction ratio can be obtained. Specific results are shown in Table 1 below.

[0085] [Table 1]

[0086]

[0087]

[0088] Table 1 above lists some of the measurement results, which can verify that the range of each dimensional parameter in the scheme of this application is within a reasonable range that can achieve the purpose of this application.

[0089] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce a good effect.

[0090] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An anti-glare film for being disposed on a display screen of a display device, characterized by, The anti-glare film comprises a light-transmitting base layer and an anti-glare layer stacked together, the anti-glare layer is arranged on the surface of the light-transmitting base layer, The anti-glare layer has a reference plane parallel to the surface of the light-transmitting base layer, the anti-glare layer is provided with a plurality of protrusions, each protrusion protrudes away from the light-transmitting base layer relative to the reference plane, the surface roughness Ra of the surface of the anti-glare layer provided with the protrusions satisfies: 0.18um≤Ra≤2.43um, In any cross section of the protrusion perpendicular to the reference plane and passing through the highest point of the protrusion, the outer contour line of the protrusion protruding relative to the reference plane is a curve, assuming that the focal point angle of the outer contour line is θ, the chord length of the contour line of the protrusion located on the reference plane is L, the chord length is the straight line distance between the two intersection points of the protrusion and the reference plane in the cross section, and the vertical height of the highest point relative to the reference plane is H, then 9.2°≤θ≤45° and 10≤L / H≤150 are satisfied, Each protrusion intersects the reference plane to form a hexagonal contour shape, and the plurality of protrusions are arranged in a honeycomb arrangement; or each protrusion intersects the reference plane to form a square contour shape, and the plurality of protrusions are arranged in a matrix array arrangement.

2. The anti-glare film according to claim 1, wherein 0.5um≤H≤30um is also satisfied.

3. The anti-glare film according to claim 1 or 2, wherein For each protrusion, there is only one highest point, In any cross section of the protrusion perpendicular to the reference plane and passing through the highest point of the protrusion, the outer contour line of the protrusion has a first intersection point and a second intersection point with the reference plane, the height of the outer contour line monotonically increases from the first intersection point to the highest point, and the height of the outer contour line monotonically decreases from the highest point to the second intersection point.

4. The anti-glare film according to claim 1 or 2, wherein The anti-glare film further comprises an anti-reflection layer covering at least the surface of the anti-glare layer provided with the protrusions, for reducing the reflectivity of light incident on the anti-glare layer.

5. The anti-glare film according to claim 4, wherein Assuming that the thickness of the anti-reflection layer is t, 100nm≤t≤1000nm is satisfied.

6. The anti-glare film according to claim 4, wherein The anti-glare film further comprises an anti-fingerprint layer covering the surface of the anti-reflection layer.

7. A method of manufacturing the anti-glare film according to any one of claims 1 to 6, characterized by, A layer of gelatinous material is arranged on the surface of the transparent substrate, and the protrusions are formed on the gelatinous material by die stamping.

8. A display device, characterized by The display device comprises a display screen and the anti-glare film according to any one of claims 1 to 6, and the anti-glare film is arranged on the display screen.

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