Polarizing element, display module and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of display, and provides a polarizing element, a display module and electronic equipment. The polarizing element comprises a polaroid and an anti-glare layer. The polaroid comprises a base material layer and a polarizing layer which are stacked. The anti-glare layer comprises a substrate layer and a microstructure layer which are integrally formed by impressing curable resin, the substrate layer is located on the surface, deviating from the polarization layer, of the base material layer, the microstructure layer is located on the side, deviating from the polarizer, of the substrate layer, the microstructure layer comprises a plurality of protrusions, a concave part is formed between every two adjacent protrusions, and in the direction perpendicular to the thickness direction of the polarization element, the thickness of the concave part is larger than the thickness of the polarization element. The size range of the cross section of each protrusion is from 3 micrometers to 20 micrometers. The polarizing element has a relatively balanced anti-flash point effect and anti-glare effect.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and more particularly, to a polarizing element, a display module, and an electronic device. Background Art

[0002] In existing polarizing elements with an anti-glare effect, a solution with particles is generally attached to the surface of a polarizer as a whole to form an anti-glare (AG) layer. Among them, the AG layer forms a discrete microscopic morphology on the surface of the polarizer, resulting in room for improvement in the anti-glare and anti-glare point effects of the anti-glare layer in existing polarizing elements. Summary of the Utility Model

[0003] A first aspect of the present application provides a polarizing element. The polarizing element includes a polarizer and an anti-glare layer. The polarizer includes a stacked substrate layer and a polarizing layer. The anti-glare layer includes a base layer and a microstructure layer integrally formed by imprinting a curable resin. The base layer is located on the surface of the substrate layer facing away from the polarizing layer, and the microstructure layer is located on the side of the base layer facing away from the polarizer. The microstructure layer includes a plurality of protrusions, and recesses are formed between adjacent protrusions. In the direction perpendicular to the thickness of the polarizing element, the size range of the cross-section of each protrusion is 3 micrometers to 20 micrometers.

[0004] In the polarizing element according to an embodiment of the present application, a continuous uneven surface microscopic morphology is formed on the polarizer by imprinting a curable resin, which is beneficial to improving the anti-glare and anti-glare point capabilities of the polarizing element. In addition, in the polarizing element according to an embodiment of the present application, the size range of the cross-section of each protrusion is 3 micrometers to 20 micrometers. Among them, the smaller the size of the protrusions in the microstructure layer (such as approaching 3 micrometers), the more conducive it is to generating a finer flash point effect when light passes through the microstructure, enhancing the fineness of the visual effect, which is particularly important for applications requiring a fine light point effect (such as a high-brightness display screen); while the larger the size of the protrusions in the microstructure (such as approaching 20 micrometers), the more conducive it is to dispersing strong light and reducing the concentration of light, thereby enhancing the anti-glare performance, especially performing better in a strong light or light pollution environment. Therefore, the polarizing element according to an embodiment of the present application has a relatively balanced anti-glare point effect and anti-glare effect.

[0005] In some embodiments, the height range of each protrusion is 2 micrometers to 10 micrometers. Specifically, if the height of each protrusion is too small (such as less than 2 micrometers), the thickness of the microstructure layer is too thin to effectively scatter incident light, resulting in an unclear anti-glare effect. If the height of each protrusion is too large (such as greater than 10 micrometers), the too thick microstructure layer may cause image distortion of the display, affecting the image display effect and detail performance. Thus, the polarizing element according to an embodiment of the present application has a relatively balanced anti-glare effect and image display effect.

[0006] In some embodiments, each protrusion includes a bottom surface bonded to the base layer, and the bottom surfaces of any two adjacent protrusions are directly connected, and / or there is a gap between the bottom surfaces of any two adjacent protrusions. Specifically, in the case where the bottom surfaces of adjacent protrusions are directly connected, it is beneficial to reduce the light directly passing through the gap between the protrusions, so that the light can be more effectively scattered or refracted when passing through the anti-glare layer, thereby improving the optical performance. Moreover, the design of directly connected bottom surfaces makes the microstructure layer more stable, which is beneficial to reducing the damage of the microstructure layer caused by external forces or abrasion during use, and improving the durability of the anti-glare layer. In addition, due to the design of directly connected bottom surfaces, the formation of the microstructure layer during the production process is more consistent and stable. In the case where there is a gap between the bottom surfaces of two adjacent protrusions, by designing the gap, the degree of light blocking by the protrusions can be reduced, thereby increasing the light transmittance of the anti-glare layer.

[0007] In some embodiments, when there is a gap between the bottom surfaces of any two adjacent protrusions, the size of the gap is smaller than the size of a protrusion. Thus, the overall surface of the microstructure layer is relatively coherent, which is beneficial to ensuring the anti-glare performance of the microstructure layer while guaranteeing the light transmittance of the anti-glare layer.

[0008] In some embodiments, the shape of each protrusion is any one of a hemispherical shape, a semi-ellipsoidal shape, a polygonal prism shape, a polygonal pyramid shape, a cylindrical shape, a conical shape, or a frustum shape. Thus, adopting different protrusion shapes can improve the flexibility of the production process, making the manufacturing process of the anti-glare layer more stable.

[0009] In some embodiments, the shape of each recess is any one of a hemispherical shape, a semi-ellipsoidal shape, a polygonal prism shape, a polygonal pyramid shape, a cylindrical shape, a conical shape, or a frustum shape. Thus, adopting different recess shapes can improve the flexibility of the production process, making the manufacturing process of the anti-glare layer more stable.

[0010] In some embodiments, along the direction away from the substrate layer, the size of the protrusion gradually decreases. Thus, the gradually decreasing size of the protrusion can better control the formation of the microstructure layer during the imprinting manufacturing process, thereby improving the production accuracy and consistency. In addition, the protrusions with gradually decreasing sizes are beneficial to achieving a gradual light scattering effect, so that the light is gradually scattered from the large size to the small size, which can more evenly disperse the incident light, reduce the light spot and reflection, and improve the anti-glare performance.

[0011] In some embodiments, the anti-glare layer includes a plurality of periodically arranged regions, each region includes a plurality of protrusions with the same shape, and the protrusions in each region are randomly distributed. Thus, setting randomly distributed protrusions in the periodically arranged regions is beneficial to avoiding optical interference or interference phenomena caused by the periodic arrangement of the protrusions, thereby reducing the production of moiré patterns.

[0012] The second aspect of the present application provides a display module. The display module includes a display panel and the polarizing element provided in the first aspect of the present application. The display panel includes a display surface for display. One side of the polarizing sheet facing away from the anti-glare layer is disposed on the display surface.

[0013] The display module of the second aspect of the present application has at least the same advantages as the polarizing element provided in the first aspect of the present application, which will not be elaborated herein.

[0014] The third aspect of the present application provides an electronic device. The electronic device includes the display module provided in the second aspect of the present application.

[0015] The electronic device of the third aspect of the present application has at least the same advantages as the display module provided in the second aspect of the present application, which will not be elaborated herein. Description of the Drawings

[0016] Figure 1 Schematic structural diagram of a polarizing element in the related art.

[0017] Figure 2 Schematic structural diagram of another polarizing element in the related art.

[0018] Figure 3 Schematic structural diagram of yet another polarizing element in the related art.

[0019] Figure 4 Schematic structural diagram of the polarizing element according to the first embodiment of the present application.

[0020] Figure 5 Schematic structural diagram of each step of the preparation method of the polarizing element according to the first embodiment of the present application.

[0021] Figure 6 Schematic structural diagram of the polarizing element according to the second embodiment of the present application.

[0022] Figure 7 Schematic structural diagram of the polarizing element according to the third embodiment of the present application.

[0023] Figure 8 Schematic structural diagram of the polarizing element according to the fourth embodiment of the present application.

[0024] Main Element Symbol Description:

[0025] Polarizing elements 1, 2, 3, 10a, 10b, 10c, 10d

[0026] Polarizing sheets 1a, 2a, 11

[0027] Anti-glare layers 1b, 2b, 12

[0028] Base layer 121

[0029] Microstructure layer 122

[0030] Protrusion p

[0031] Recess r

[0032] Curable resin layer 20

[0033] Roller 30

[0034] Region A Detailed implementation mode

[0035] Figure 1 It is a schematic structural diagram of a polarizing element in the related art. As shown in FIGS. (a) and (b) in Figure 1 , the polarizing element 1 includes a polarizing plate 1a and an anti-glare layer 1b formed on the surface of the polarizing plate 1a. Among them, the anti-glare layer 1b is formed by integrally attaching a solution with particles to the surface of the polarizing plate 1a. As can be seen from FIGS. (a) and (b) in Figure 1 , the anti-glare layer 1b has a discrete microscopic morphology.

[0036] Figure 2 It is a schematic structural diagram of another polarizing element in the related art. As shown in FIGS. (a) and (b) in Figure 2 , the polarizing element 2 includes a polarizing plate 2a and an anti-glare layer 2b formed on the surface of the polarizing plate 2a. Similar to the preparation process of the anti-glare layer 1b, the anti-glare layer 2b is formed by integrally attaching a solution with particles to the surface of the polarizing plate 2a. As can be seen from FIGS. (a) and (b) in Figure 2 , the anti-glare layer 2b also has a discrete microscopic morphology. The difference between the anti-glare layer 2b and the anti-glare layer 1b is that the particles in the anti-glare layer 2b are finer in size.

[0037] Figure 3 It is a schematic structural diagram of yet another polarizing element in the related art. Figure 3 The polarizing element 3 shown in FIGS. (a) and (b) in

[0038] is a cover glass. By etching or other methods, a continuous uneven surface microscopic morphology can be formed on the polarizing element 3. Among them, due to the higher uniformity, this continuous uneven surface microscopic morphology shows better effects in anti-glare and anti-flash point. Figure 1 and Figure 2 it can be seen that the anti-glare layer formed by spraying particles on the existing polarizing plate cannot achieve a continuous uneven surface microscopic morphology. In addition, from Figure 3It can be seen that the cover glass can form a continuous uneven surface micro-topography through the etching process. However, since the substrate of the polarizer is usually a plastic material such as TriacetylCellulose (TAC) or Polyethylene Terephthalate (PET), the solution of etching and fabricating a continuous uneven surface micro-topography on the cover glass cannot be applied to the polarizer.

[0039] In view of this, the first aspect of the present application provides a polarizing element. The polarizing element includes a polarizer and an anti-glare layer. The polarizer includes a stacked substrate layer and a polarizing layer. The anti-glare layer includes a base layer and a microstructure layer integrally formed by imprinting a curable resin. The base layer is located on the surface of the substrate layer facing away from the polarizing layer, and the microstructure layer is located on the side of the base layer facing away from the polarizer. The microstructure layer includes a plurality of protrusions, and recesses are formed between adjacent protrusions. In the direction perpendicular to the thickness of the polarizing element, the size range of the cross-section of each protrusion is 3 micrometers to 20 micrometers.

[0040] In the polarizing element of the embodiment of the present application, a continuous uneven surface micro-topography is formed on the polarizer by imprinting a curable resin, which is beneficial to improving the anti-glare and anti-flash point capabilities of the polarizing element. In addition, in the polarizing element of the embodiment of the present application, the size range of the cross-section of each protrusion is 3 micrometers to 20 micrometers. Among them, the smaller the size of the protrusions in the microstructure layer (such as close to 3 micrometers), the more conducive it is to generating a finer flash point effect when light passes through the microstructure, improving the fineness of the visual effect, which is particularly important for applications that require a fine light point effect (such as high-brightness display screens); while the larger the size of the protrusions in the microstructure (such as close to 20 micrometers), the more conducive it is to dispersing strong light and reducing the concentration of light, thereby enhancing the anti-glare performance, especially in a strong light or light pollution environment. Therefore, in the polarizing element of the embodiment of the present application, there is a relatively balanced flash point effect and anti-glare effect.

[0041] The second aspect of the present application also provides a display module, which includes a display panel and the polarizing element of the first aspect of the present application. The display panel includes a display surface for display. The side of the polarizer facing away from the anti-glare layer is disposed on the display surface.

[0042] In some embodiments, the display panel is a liquid crystal display panel, and the polarizing element is used as the upper polarizer in the display module. In other embodiments, the display panel may also be an organic light-emitting diode display panel, but is not limited thereto.

[0043] In some embodiments, the display module further includes a cover plate. The cover plate is attached to the side of the polarizing element facing away from the display panel. The cover plate can be transparent glass or transparent plastic.

[0044] A third aspect of the present application further provides an electronic device. The electronic device includes the display module according to the second aspect of the present application. The electronic device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, etc.

[0045] The following describes the polarizing element according to different embodiments of the present application with reference to the accompanying drawings. Among them, the same reference numerals represent the same or similar elements or elements with the same or similar functions throughout.

[0046] Figure 4 It is a schematic structural diagram of the polarizing element 10a according to the first embodiment of the present application. As Figure 4 shown, the polarizing element 10a includes a polarizer 11 and an anti-glare layer 12. The anti-glare layer 12 is located on the surface of the polarizer 11. The anti-glare layer 12 includes a base layer 121 and a microstructure layer 122. The base layer 121 is in direct contact with the polarizer 11, and the microstructure layer 122 is located on the side of the base layer 121 away from the polarizer 11. The microstructure layer 122 includes a plurality of protrusions p, and recesses r are formed between adjacent protrusions p. Thus, the anti-glare layer 12 on the polarizer 11 is a continuous and uninterrupted structure, which is beneficial to improving the anti-glare ability of the polarizing element 10a compared with the discrete micro-topography AG layer in the related art.

[0047] In some embodiments, the polarizer 11 includes a first substrate layer (not shown in the figure), a polarizing layer (not shown in the figure), a second substrate layer (not shown in the figure), an adhesive layer (not shown in the figure), and a release layer (not shown in the figure) stacked in sequence. The anti-glare layer 12 is located on the first substrate layer, or in other words, the anti-glare layer 12 is located on the side of the substrate layer in the polarizer 11 away from the polarizing layer.

[0048] Specifically, the materials of the first substrate layer and the second substrate layer may be, but are not limited to, TAC, PET, etc. The polarizing layer may be, but is not limited to, polyvinyl alcohol (PVA). The adhesive layer may be, but is not limited to, a pressure-sensitive adhesive layer (PSA).

[0049] In other embodiments, the film layers other than the substrate layer and the polarizing layer in the polarizer 11 are not limited to the above, and the anti-glare layer is formed on the side of the substrate layer in the polarizer 11 away from the polarizing layer.

[0050] In this embodiment, the shape of each recess r is hemispherical. Along the thickness direction of the polarizing element 10a, the cross-section of each recess r is arc-shaped. Along the direction away from the substrate layer, the size of the protrusion p gradually becomes smaller.

[0051] Specifically, the base layer 121 and the microstructure layer 122 are integrally formed by imprinting with a curable resin. Figure 5Schematic diagrams of the steps of the preparation method of the polarizing element 10a according to the first embodiment of the present application. As Figure 5 shown in FIG. (a) in

[0052] In this embodiment, the curable resin layer 20 is an ultraviolet-curable resin material. In other embodiments, the curable resin layer 20 can also be a heat-curable resin material.

[0053] It should be noted that compared with heat-curable resins, ultraviolet-curable resins will cure rapidly under ultraviolet light irradiation, usually completed within a few seconds to a few minutes. Heat-curable resins need to be heated at high temperatures, and the curing process is slower. Since the ultraviolet-curing process is fast and the required energy is much lower than that of the heat-curing process, therefore, when the curable resin layer 20 is an ultraviolet-curable resin material, the process efficiency can be improved, energy can be saved, and production costs can be reduced.

[0054] As Figure 5 shown in FIGS. (b) and (c) in

[0055] In the embodiment of the present application, an anti-glare layer with an uneven surface is formed by means of coating, imprinting, and light curing. It has strong adhesion, and by setting the pattern of the roller 30, the controllability of the shape and size of the protrusions p and recesses r in the microstructure layer 122 is stronger, which is conducive to the preparation of the polarizing element 10a with good anti-glare performance and low flash point.

[0056] In the direction perpendicular to the thickness of the polarizing element 10a, the size range of the cross-section of each protrusion p is 3 micrometers to 20 micrometers (such as 3 micrometers to 5 micrometers, 5 micrometers to 10 micrometers, 10 micrometers to 15 micrometers, 15 micrometers to 18 micrometers, or 18 micrometers to 20 micrometers).

[0057] As described above, the smaller the size of the protrusions p in the microstructure layer 122 (such as approaching 3 micrometers), the more conducive it is to generating a finer flash point effect when light passes through the microstructure; and the larger the size of the protrusions p in the microstructure (such as approaching 20 micrometers), the more conducive it is to dispersing strong light and reducing the concentration of light, thereby enhancing the anti-glare performance. Therefore, in the polarizing element 10a of the embodiment of the present application, there is a relatively balanced flash point effect and anti-glare effect.

[0058] The height range of each protrusion p is from 2 micrometers to 10 micrometers (such as 2 micrometers to 4 micrometers, 4 micrometers to 6 micrometers, 6 micrometers to 8 micrometers, or 8 micrometers to 10 micrometers). Specifically, if the height of each protrusion p is too small (such as less than 2 micrometers), the thickness of the microstructure layer 122 is too thin to effectively scatter the incident light, resulting in an unclear anti-glare effect. If the height of each protrusion p is too large (such as greater than 10 micrometers), the too-thick microstructure layer 122 may cause image distortion of the display, affecting the display effect and detail performance.

[0059] In the direction away from the substrate layer, the size of the protrusion p gradually decreases. Thus, the gradually decreasing size change of the protrusion p can better control the formation of the microstructure layer 122 during the imprint manufacturing process, thereby improving production accuracy and consistency. In addition, the protrusion p with a gradually decreasing size is conducive to achieving a gradual light scattering effect, enabling the light to be gradually scattered from a large size to a small size, which can more evenly disperse the incident light, reduce light spots and reflections, and improve the anti-glare performance.

[0060] Figure 6 It is a schematic structural diagram of the polarizing element 10b according to the second embodiment of the present application. As Figure 6 shown in FIG. (a) therein, the main difference between the polarizing element 10b of the second embodiment and the polarizing element 10a of the first embodiment lies in: the shapes of the protrusions p and the recesses r in the microstructure layer 122. In the polarizing element 10b, the shape of each protrusion p is hemispherical. Along the thickness direction of the polarizing element 10b, the cross-section of each said protrusion p is arc-shaped.

[0061] As Figure 6 shown in FIG. (b) therein, some protrusions p are connected, and there are gaps between some protrusions p. Specifically, each protrusion p includes a bottom surface combined with the base layer 121. The bottom surfaces of some adjacent protrusions p are directly connected, and there are gaps between the bottom surfaces of some protrusions p.

[0062] In the case where the bottom surfaces of adjacent protrusions p are directly connected, it is beneficial to reduce the light directly passing through the gaps between the protrusions p, enabling the light to be more effectively scattered or refracted when passing through the anti-glare layer 12, thereby improving the optical performance. Moreover, the directly connected bottom surface design makes the microstructure layer 122 more stable, which is beneficial to reducing the damage of the microstructure layer 122 caused by external forces or abrasion during use, and improving the durability of the anti-glare layer 12. In addition, due to the directly connected bottom surface design, the formation of the microstructure layer 122 during the production process is more consistent and stable.

[0063] In the case where there is a gap between the bottom surfaces of two adjacent protrusions p, by designing the gap, the degree of light blocking by the protrusions p can be reduced, thereby increasing the light transmittance of the anti-glare layer 12.

[0064] In some embodiments, the size of the gap between adjacent protrusions p is smaller than the size of one protrusion p. Thus, the overall surface of the microstructure layer 122 is relatively coherent, which is beneficial to ensuring the light transmittance of the anti-glare layer 12 while ensuring the anti-glare performance of the microstructure layer 122.

[0065] In this embodiment, the anti-glare layer 12 includes a plurality of periodically arranged regions A ( Figure 6 two are shown in the figure). Each region A includes a plurality of protrusions p with the same shape. The protrusions p in each region A are randomly distributed. Thus, randomly distributed protrusions p are arranged in the periodically arranged regions A, which is beneficial to avoiding optical interference or interference phenomena caused by the periodic arrangement of the protrusions p, and further reducing the production of moiré patterns.

[0066] Specifically, each region A can be embossed by the same roller 30 or a roller 30 with the same pattern. By designing the pattern on the roller 30 to include randomly distributed grooves or protrusions, the random distribution of the protrusions p in each region A is achieved.

[0067] In other embodiments, the shapes and sizes of the protrusions p in each region A can be the same or different.

[0068] Figure 7 It is a schematic structural diagram of the polarizing element 10c according to the third embodiment of the present application. As Figure 7 shown in FIGS. (a) and (b) therein, the main difference between the polarizing element 10c of the third embodiment and the polarizing element 10a of the first embodiment lies in: the shapes of the protrusions p and the recesses r in the microstructure layer 122.

[0069] Specifically, in the polarizing element 10c, the shape of each protrusion p is a polygonal pyramid. Along the thickness direction of the polarizing element 10c, the cross-section of each protrusion p is trapezoidal. More specifically, along the cross-section perpendicular to the thickness direction of the polarizing element 10c, the shape of each protrusion p is a regular hexagon. A plurality of protrusions p are arranged in a matrix of multiple rows and multiple columns.

[0070] Figure 8 It is a schematic structural diagram of the polarizing element 10d according to the fourth embodiment of the present application. As Figure 8 shown, the main difference between the polarizing element 10d of the fourth embodiment and the polarizing element 10c of the third embodiment lies in: the shapes of the protrusions p and the recesses r in the microstructure layer 122.

[0071] Specifically, in the polarizing element 10d, each recess r is a polygonal pyramid, and along the thickness direction of the polarizing element 10d, the cross-section of each recess r is trapezoidal.

[0072] In other embodiments, the shapes of the protrusions p and the recesses r in the microstructure layer 122 are not limited to Figures 4 to 8 shown.

[0073] In some embodiments, the shape of each protrusion p can also be any one of a semi-ellipsoidal shape, a polygonal prism, a polygonal pyramid, a cylindrical shape, a conical shape, or a frustum shape.

[0074] In other embodiments, the shape of each recess r can also be any one of a semi-ellipsoidal shape, a polygonal prism, a polygonal pyramid, a cylindrical shape, a conical shape, or a frustum shape.

[0075] Specifically, the polygonal prism in the above-mentioned protrusion p or recess r can be, but is not limited to, a quadrilateral prism, a pentagonal prism, a hexagonal prism, a heptagonal prism, an octagonal prism, a nonagonal prism, a decagonal prism, etc.

[0076] The polygonal pyramid in the above-mentioned protrusion p or recess r can be, but is not limited to, a quadrilateral pyramid, a pentagonal pyramid, a hexagonal pyramid, a heptagonal pyramid, an octagonal pyramid, a nonagonal pyramid, a decagonal pyramid, etc.

[0077] In some embodiments, the shape of the protrusion p in the microstructure layer 122 can be a combination of two or more than two of the above hemispherical shape, semi-ellipsoidal shape, polygonal prism, polygonal pyramid, cylindrical shape, conical shape, or frustum shape.

[0078] In some embodiments, the shape of the recess r in the microstructure layer 122 can be a combination of two or more than two of the above hemispherical shape, semi-ellipsoidal shape, polygonal prism, polygonal pyramid, cylindrical shape, conical shape, or frustum shape.

[0079] Thus, different shapes of the protrusion p (or recess r) can improve the flexibility of the production process, making the manufacturing process of the anti-glare layer 12 more stable.

[0080] In addition, protrusions p (or recesses r) with different shapes have different effects on the reflection and refraction of light. By adopting a variety of protrusion p shapes, fine control of the light path can be achieved, making the light evenly distributed and reducing the phenomena of light spots and bright spots.

[0081] For example, hemispherical and conical protrusions p can effectively scatter light in multiple directions, generating a smoother light transition, thereby improving the anti-glare performance and making the visual experience more comfortable. Frustum-shaped and cylindrical protrusions p can help the light be evenly distributed over a larger area A, thereby enhancing the uniformity of the display effect. The design of polygonal prisms and polygonal pyramids can enable precise control of light at different angles and directions, optimizing the overall optical performance of the anti-glare layer 12.

[0082] The above embodiments are only used to illustrate the technical solutions of the present application rather than to limit them. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements can be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A polarizing element, characterized in that: include: A polarizer, comprising a laminated substrate layer and a polarizing layer; as well as The anti-glare layer comprises a base layer and a microstructure layer which are integrally formed by embossing of a curable resin, wherein the base layer is located on a surface of the substrate layer away from the polarizing layer, and the microstructure layer is located on a side of the base layer away from the polarizer, wherein the microstructure layer comprises a plurality of protrusions, and concave portions are formed between adjacent protrusions, and a size range of a cross section of each protrusion is 3 to 20 microns along a thickness direction perpendicular to the polarizing element.

2. The polarizing element according to claim 1, wherein The height of each protrusion ranges from 2 micrometers to 10 micrometers.

3. The polarizing element according to claim 1, wherein Each of the protrusions includes a bottom surface combined with the base layer, the bottom surfaces of any two adjacent protrusions are directly connected, and / or there is a gap between the bottom surfaces of any two adjacent protrusions.

4. The polarizing element according to claim 3, wherein In the case where there is a gap between the bottom surfaces of any two adjacent protrusions, the size of the gap is smaller than the size of one protrusion.

5. The polarizing element according to claim 1, wherein The shape of each protrusion is any one of a hemispherical shape, a semi-ellipsoidal shape, a polygonal column, a polygonal cone, a cylindrical shape, a conical shape or a truncated cone shape.

6. The polarizing element according to claim 1, wherein The shape of each of the concave portions is any one of a hemispherical shape, a hemispherical shape, a polygonal column, a polygonal cone, a cylindrical shape, a conical shape or a truncated cone shape.

7. The polarizing element according to claim 1, wherein The size of the protrusions gradually decreases in a direction away from the substrate layer.

8. The polarizing element according to any one of claims 1 to 7, characterized in that: The anti-glare layer includes a plurality of periodically arranged regions, each of the regions includes a plurality of protrusions of the same shape, and the protrusions in each of the regions are randomly distributed.

9. A display module, characterized in that: include: A display panel, comprising a display surface for display; as well as The polarizing element according to any one of claims 1 to 8, wherein a side of the polarizer facing away from the anti-glare layer is arranged on the display surface.

10. An electronic device, characterized in that: Comprising the display module as claimed in claim 9.

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