Anti-glare optical layer and electronic device

Abstract

The application provides an anti-glare optical layer and an electronic device. The anti-glare optical layer comprises a substrate; a microstructure layer arranged on a surface of the substrate in a thickness direction of the substrate, the microstructure layer comprising a plurality of microstructure units, a projection of the microstructure unit on the substrate being a rotationally symmetric pattern. The anti-glare optical layer can balance the definition and the anti-glare effect.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to an anti-glare optical layer and an electronic device. Background Technology

[0002] Currently, as users continue to spend more time using electronic devices, the demand for visual protection features is also increasing. Glare in outdoor environments, as one of the important factors causing visual fatigue and discomfort, is receiving more and more research and attention.

[0003] Please refer to Figure 1 A common anti-glare solution involves forming an anti-glare (AG) layer 2 on the surface of the glass cover plate 1 using a chemical etching process. The basic working principle of the AG layer 2 is that its randomly distributed micron-level uneven structure scatters incident direct light into diffuse reflection, thereby reducing the intensity of light directly entering the eye, alleviating glare, and protecting eyesight. However, this traditional method has significant limitations. Chemical etching often results in uneven distribution of the microstructure on the glass cover plate surface, making it difficult to precisely control the direction and intensity of the emitted light, significantly sacrificing image clarity, and introducing noticeable sparkle phenomena (see [link to relevant documentation]). Figure 2 This can cause random bright spots or visual noise to appear on the screen.

[0004] Therefore, in traditional AG layer applications, there is an irreconcilable contradiction between anti-glare performance and display clarity, which seriously affects the user's viewing experience. Utility Model Content

[0005] This application provides an anti-glare optical layer and an electronic device, which can balance clarity and anti-glare effect.

[0006] This application provides an anti-glare optical layer, including:

[0007] substrate;

[0008] A microstructure layer is disposed on the surface of the substrate along the thickness direction of the substrate. The microstructure layer includes a plurality of microstructure units, and the projection of the microstructure units on the substrate is a rotationally symmetric pattern.

[0009] In some embodiments, the shape of a single microstructure unit is one of a triangular prism, a triangular frustum, a square prism, a square frustum, a hexagonal frustum, a hexagonal prism, or a hemisphere.

[0010] In some embodiments, at least a portion of the microstructure units are periodically distributed on the substrate surface.

[0011] In some embodiments, the side of the microstructure unit away from the substrate is parallel to the side of the substrate near the microstructure layer.

[0012] In some embodiments, the sides of the plurality of microstructure units away from the substrate are coplanar.

[0013] In some embodiments, the thickness of the anti-glare optical layer is greater than or equal to 1 μm; and / or, the thickness of the microstructure layer is greater than or equal to 0.25 μm.

[0014] In some embodiments, the transmittance of the anti-glare optical layer is greater than or equal to 90%; and / or, the haze of the anti-glare optical layer is 40% to 60%.

[0015] In some embodiments, the Mohs hardness of the anti-glare optical layer is greater than or equal to 5; and / or, the elastic modulus of the anti-glare optical layer is greater than or equal to 5 GPa; and / or, the elongation at break of the anti-glare optical layer is greater than or equal to 2%.

[0016] This application also provides an electronic device, including:

[0017] Display panel;

[0018] An anti-glare optical layer, wherein the anti-glare optical layer is the aforementioned anti-glare optical layer, and the anti-glare optical layer is disposed on the light-emitting side of the display panel.

[0019] In some embodiments, the anti-glare optical layer is a cover glass, and the microstructure layer is disposed on the surface of the cover glass away from the display panel.

[0020] The anti-glare optical layer and electronic device provided in this application include a substrate and a microstructure layer. The microstructure layer is disposed on the surface of the substrate along its thickness direction. The microstructure layer includes multiple microstructure units, and the projection of these microstructure units onto the substrate is a rotationally symmetric pattern. This symmetry helps ensure consistent scattering behavior of light at different incident angles, thereby significantly improving the stability and uniformity of optical performance and achieving effective control over light emission. The aforementioned anti-glare optical layer can balance clarity and anti-glare effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1Figure 1 shows the optical effect of a glass cover plate in the prior art: (1) is a glass cover plate with an anti-glare optical layer; (2) is a flat glass cover plate.

[0023] Figure 2 The following are examples of display screens that exhibit flickering phenomena in the prior art: (1) a solid color display screen, and (2) a multi-color display screen.

[0024] Figure 3 This is a schematic diagram of the structure of the anti-glare optical layer provided in an embodiment of this application.

[0025] Figure 4 A physical microscopic image of the microstructure unit provided in the embodiments of this application.

[0026] Figure 5 The projection shape of a single microstructure unit on the substrate provided in the embodiments of this application is: (1) an equilateral triangle, (2) a square, (3) a regular hexagon, and (4) a circle.

[0027] Figure 6 The divergence angle of the emitted light of the display panel provided in the embodiments of this application is as follows: (1) is the divergence diagram of the emitted light of the anti-glare optical layer in the prior art; (2) is the divergence diagram of the emitted light of the anti-glare optical layer provided in this application.

[0028] Figure 7 The following are comparison images of the display screens provided for the embodiments of this application: (1) is a physical microscopic image of the AG layer in the prior art; (2) is a physical microscopic image of the anti-glare optical layer provided in this application; (3) is a schematic diagram of optical testing after applying the AG layer in the prior art; (4) is a schematic diagram of optical testing after applying the anti-glare optical layer provided in this application; (5) is an image flashing image after applying the AG layer in the prior art; (6) is an improved image flashing image after applying the anti-glare optical layer provided in this application; (7) is a text flashing image after applying the AG layer in the prior art; and (8) is an improved text flashing image after applying the anti-glare optical layer provided in this application.

[0029] Figure 8 The flash point phenomenon formation mechanism is provided in the embodiments of this application.

[0030] Figure 9 This is a schematic diagram of a first structure of an electronic device provided in an embodiment of this application.

[0031] Figure 10 This is a schematic diagram of a second structure of an electronic device provided in an embodiment of this application.

[0032] Figure 11The following are schematic diagrams of the microstructure unit provided in the embodiments of this application: (1) is a top view when the microstructure unit is a hexagonal frustum; (2) is a top view when the microstructure unit is a hemisphere; (3) is a top view when the microstructure unit is a quadrangular prism; (4) is a side view when the microstructure unit is a hexagonal frustum; (5) is a side view when the microstructure unit is a hemisphere; and (6) is a side view when the microstructure unit is a quadrangular prism.

[0033] Figure 12 This is a schematic diagram of a third structure of an electronic device provided in an embodiment of this application.

[0034] Figure 13 This is a schematic diagram of the structure of a liquid crystal cell provided in an embodiment of this application.

[0035] Figure 14 This is a schematic diagram of a fourth structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] This application provides an anti-glare optical layer and an electronic device, which can balance clarity and anti-glare effect. The following is a detailed description with reference to the accompanying drawings.

[0038] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of the anti-glare optical layer provided in an embodiment of this application.

[0039] This application provides an anti-glare optical layer 10, which includes a substrate 11 and a microstructure layer 12.

[0040] The substrate 11 is a transparent flat panel component that serves as the main support for the optical layer. It is made of glass or optical-grade polymer materials, such as tempered glass, polycarbonate (PC), polyethylene terephthalate (PET), or cyclic olefin polymers (COP). The substrate 11 not only provides stable mechanical support for the microstructure layer 12 but also ensures high light transmittance and avoids introducing additional optical attenuation.

[0041] Please see Figure 4 , Figure 4This is a physical microscopic image of the microstructure unit provided in the embodiments of this application. The microstructure layer 12 is a micro / nanoscale structure array disposed along the thickness direction of the substrate 11 on the surface of the substrate 11, used to modulate the distribution of incident light. The microstructure unit 121 is a micrometer or nanometer-scale optical structure with a specific geometric profile.

[0042] Please see Figure 5 , Figure 5 The projection shape of a single microstructure unit on the substrate provided in this embodiment of the application. The projection of the microstructure unit 121 on the substrate 11 is a rotationally symmetric figure, that is, the figure can be rotated around its center by a certain angle to coincide with itself. Figure 5 (1) is an equilateral triangle. Figure 5 (2) is a square. Figure 5 (3) is a regular hexagon. Figure 5 (4) is circular. This symmetry helps the light to achieve consistent scattering behavior under different incident angles, thereby improving the stability of optical performance.

[0043] For some implementation plans, please refer to [link / reference]. Figure 5 The shape of each microstructure unit 121 is one of a triangular prism, a triangular frustum, a square prism, a square frustum, a hexagonal frustum, a hexagonal prism, or a hemisphere. Due to its regular geometric shape and smoothly transitioned sidewall angles, this type of structure can achieve light reflection and refraction while minimizing light energy loss and stray light generation. Therefore, it maintains high image clarity and contrast while significantly improving anti-glare performance, thus overcoming the technical contradiction of balancing anti-glare and clarity in traditional surface treatment technologies.

[0044] The individual microstructure unit 121 can exhibit rotational symmetry to uniformly reflect incident light. See also... Figure 6 , Figure 6 The divergence angle of the emitted light from the display panel provided in the embodiments of this application is as follows: (1) is the divergence diagram of the emitted light from the AG layer in the prior art; (2) is the divergence diagram of the emitted light from the anti-glare optical layer provided in this application. Figure 6 (2) The microstructure unit 121 and the anti-glare optical layer 10 it constitutes can not only scatter ambient light more uniformly, but also significantly reduce random moiré patterns, thereby greatly reducing the flash phenomenon while improving image clarity.

[0045] Please see Figure 7 , Figure 7The following are comparison images of the display screens provided for the embodiments of this application: (1) is a physical microscopic image of the AG layer in the prior art; (2) is a physical microscopic image of the anti-glare optical layer provided in this application; (3) is a schematic diagram of optical testing after applying the AG layer in the prior art; (4) is a schematic diagram of optical testing after applying the anti-glare optical layer provided in this application; (5) is an image flashing image after applying the AG layer in the prior art; (6) is an improved image flashing image after applying the anti-glare optical layer provided in this application; (7) is a text flashing image after applying the AG layer in the prior art; and (8) is an improved text flashing image after applying the anti-glare optical layer provided in this application.

[0046] from Figure 7 As can be seen from (2), (4), (6), and (8), the anti-glare optical layer 10 provided in this application embodiment has a highly ordered microstructure arrangement, and its surface uniformity is significantly better than the random uneven structure formed by traditional chemical etching. This application effectively suppresses moiré patterns caused by the random interaction between pixel period and surface microstructure through the design of microstructure unit 121, thereby exhibiting a lower flash point value and higher image fidelity in optical testing.

[0047] The substrate 11 and the microstructure layer 12 are integrally formed. For example, the microstructure layer 12 includes multiple microstructure units 121 formed by nanoimprinting, photolithography, or precision engraving processes. That is, the substrate 11 and the microstructure layer 12 are formed simultaneously during the molding process of the substrate (such as polymer or glass), and molecular-level bonding is achieved at the interface between the two without physical seams. The integral molding process of the substrate 11 and the microstructure layer 12 also includes, but is not limited to, injection molding, hot stamping, or ultraviolet curing. The integrally formed structure avoids interface reflection, light energy loss, and image distortion caused by multilayer bonding, and significantly improves the consistency of optical performance, mechanical stability, and environmental durability.

[0048] At least a portion of the microstructural units 121 are periodically distributed on the surface of the substrate 11. This periodic distribution refers to the regular repetition of the microstructural units 121 at fixed intervals or in a fixed pattern, which facilitates the directional control of incident light and significantly improves the uniformity of light scattering, thereby effectively suppressing local glare and uneven brightness. The periodic distribution can be specifically manifested in the following two ways.

[0049] In some embodiments, the microstructure units 121 are uniformly distributed on the surface of the substrate 11, meaning that the number of each microstructure unit 121 per unit area of ​​the substrate 11 is constant and the spacing is consistent. This uniform arrangement helps to achieve uniform scattering of incident light across the entire optical layer, avoiding uneven brightness or moiré patterns caused by differences in structural density in local areas, thereby improving visual uniformity and comfort.

[0050] In other embodiments, the microstructure units 121 are non-uniformly distributed on the surface of the substrate 11, meaning the distribution density of microstructure units 121 in the central region of the substrate 11 is lower than that in the edge regions. This is because the edge regions are more susceptible to lateral ambient light, resulting in a more pronounced glare effect. By increasing the microstructure density in the edge regions, the scattering and anti-glare capabilities of these regions against obliquely incident light can be enhanced; correspondingly reducing the density in the central region helps maintain the original clarity and detail of the front image. Thus, an adaptive balance between anti-glare performance and optical clarity is achieved from the center to the edge, making it particularly suitable for large-size, high-resolution display panels 20.

[0051] The side of the microstructure unit 121 away from the substrate 11 is parallel to the side of the substrate 11 near the microstructure layer 12, which ensures that the propagation direction of the emitted light is consistent and avoids light distortion or scattering chaos caused by different top surface tilt angles, which helps to improve the visual clarity and uniformity of the image.

[0052] In this design, multiple microstructure units 121 are coplanar on the side away from the substrate 11, meaning that the top surfaces of all microstructure units 121 are located on the same plane, forming a continuous optical interface. The coplanar top surfaces ensure that light has a highly consistent emission angle and spatial distribution when it exits the anti-glare layer, effectively avoiding problems such as chaotic light scattering, local bright spots, or visual noise (such as increased random flashes) caused by inconsistent microstructure heights, thereby significantly improving visual uniformity and comfort.

[0053] The thickness of the anti-glare optical layer 10 is greater than or equal to 1 μm. This thickness range ensures sufficient mechanical strength of the structure while avoiding problems such as insufficient optical control capability or easy deformation that may occur if the optical layer is too thin.

[0054] The thickness of the microstructure layer 12 is greater than or equal to 0.25 μm. This size range can effectively accommodate micron or nanoscale microstructure units 121 to achieve efficient light modulation and anti-glare functions.

[0055] The anti-glare optical layer 10 has a light transmittance greater than or equal to 90%. Light transmittance indicates the ability of light to pass through a medium. The anti-glare optical layer 10, which meets this light transmittance requirement, ensures efficient transmission of display light and minimizes the negative impact of the optical layer on display brightness.

[0056] The haze of the anti-glare optical layer 10 is 40% to 60%, for example, the haze of the anti-glare optical layer 10 can be 40%, 50%, or 60%. Haze is an important parameter describing the optical transparency of transparent or translucent materials. The anti-glare optical layer 10 that satisfies this relationship effectively scatters ambient light and suppresses glare, while avoiding image blurring or loss of detail caused by excessive scattering, thus balancing anti-glare effect and image fidelity.

[0057] The anti-glare optical layer 10 has a Mohs hardness of 5 or higher, indicating that its surface has basic scratch resistance and can meet the mechanical durability requirements of daily use.

[0058] The elastic modulus of the anti-glare optical layer 10 is greater than or equal to 5 GPa. Elastic modulus is a key physical parameter characterizing the ability of a solid material to resist elastic deformation. In this embodiment, the anti-glare optical layer has a high elastic modulus, indicating that the material has high stiffness and can effectively maintain the stability and reliability of the microstructure unit 121's morphology.

[0059] The elongation at break of the anti-glare optical layer 10 is greater than or equal to 2%. Elongation at break is an indicator of the material's softness and elasticity. The anti-glare optical layer 10, which satisfies this relationship, can maintain its structural integrity within a certain deformation range, reducing the risk of brittle fracture.

[0060] Furthermore, the anti-glare optical layer 10 also includes a wear-resistant layer disposed on the surface of the microstructure unit 121. This coating is typically an inorganic oxide, such as SiO2, Al2O3, or a diamond-like carbon (DLC) or other hard materials, formed by vapor deposition or sol-gel processes, to improve the mechanical wear resistance and chemical stability of the microstructure unit 121 and extend the service life of the optical device.

[0061] Specifically, the absolute value of the difference between the refractive index of the wear-resistant layer and the refractive index of the substrate 11 is less than 0.1. This refractive index matching design can greatly reduce the Fresnel reflection loss of light at the interface between the wear-resistant layer and the substrate 11, avoid the introduction of additional glare or reduction of light transmittance due to the coating, and thus significantly improve the reliability and environmental durability of the device without sacrificing anti-glare performance.

[0062] In some embodiments, the anti-glare optical layer 10 further includes an anti-fingerprint layer. Exemplarily, the anti-fingerprint layer covers the surface of the microstructure layer 12. The anti-fingerprint layer reduces fingerprint adhesion, making it easier to clean dirt from the surface of the anti-glare optical layer 10.

[0063] In some embodiments, please refer to Figure 8 This illustrates one of the formation mechanisms of the sparkle phenomenon. A sparkle is a random, flickering visual noise that appears on a display screen. It is caused by the fact that when the electronic device 3 emits light, the pixels of the display panel 4 are arranged periodically, emitting light with a specific pattern. When this light passes through a traditional anti-glare optical layer 5 with a random, disordered microstructure on its surface, uncontrollable random refraction and diffraction occur, causing interference between the light rays. Ultimately, this results in visually unpleasant random moiré patterns 6, i.e., sparkles.

[0064] Currently, the flash point level of flat glass cover plates is about 2 to 3 (measured by professional instruments), while the surface treatment of traditional chemically etched anti-glare glass is uneven and the optical parameters are not matched with the pixel units. Its flash point value is usually between 8 and 12, accompanied by a serious decrease in clarity and an increase in haze.

[0065] Please see Figure 9 , Figure 9 This is a schematic diagram of a first structure of an electronic device provided in an embodiment of this application.

[0066] To address the aforementioned technical problems, this application provides an electronic device 100. The electronic device 100 refers to a terminal product or device that includes a display function and needs to provide visual information to users in complex lighting environments. It includes, but is not limited to, smartphones, tablets, laptops, smartwatches, in-vehicle display systems, aviation instrument displays, outdoor advertising screens, medical display devices, and industrial control human-machine interfaces. The electronic device 100 includes a display panel 20 and an anti-glare optical layer 10.

[0067] The display panel 20 is an image generating element, which may be a liquid crystal display panel 20, an organic light-emitting diode display panel 20, or a micro light-emitting diode display panel 20, used to generate display images and emit display light. In this application, a liquid crystal display panel 20 is used as an example for illustration.

[0068] The anti-glare optical layer 10 is the aforementioned anti-glare optical layer 10. The anti-glare optical layer 10 is disposed on the light-emitting side of the display panel 20, located above the display surface of the display panel 20, and is used to receive the emitted light from the display panel 20 and modulate the ambient incident light.

[0069] As described above, the anti-glare optical layer 10 includes a substrate 11 and a microstructure layer 12 disposed thereon. The microstructure layer 12 has periodically arranged microstructure units 121, which achieve uniform scattering by precisely controlling the light path, thereby suppressing ambient glare while maintaining the original image clarity and contrast.

[0070] In some cases, the anti-glare optical layer 10 can be vacuum-attached to the surface of the display panel 20 as a removable accessory. This configuration facilitates replacement of the anti-glare optical layer 10 after wear or scratches due to long-term use, improving the maintainability and lifespan of the electronic device 100 while reducing overall maintenance costs.

[0071] In other cases, the anti-glare optical layer 10 is a cover glass. The cover glass can be a transparent glass substrate 11, which may have undergone chemical strengthening treatment. The transparent glass substrate 11 not only serves to support the microstructure layer 12, but also provides the outermost layer of impact-resistant and scratch-resistant physical protection for the electronic device 100.

[0072] In some embodiments, the anti-glare microstructure layer 12 may be disposed on the outer surface of the cover glass away from the display panel 20. This arrangement exposes the microstructure unit 121 directly to ambient light, which can most effectively scatter the incident ambient light, suppress specular reflection, thereby significantly reducing glare interference and improving visibility in outdoor or bright light environments.

[0073] In other embodiments, the anti-glare microstructure layer 12 may also be disposed on the inner surface of the cover glass near the display panel 20. This embedded design provides physical protection for the microstructure unit 121, preventing it from being worn or contaminated due to direct contact with the external environment, thereby maintaining stable optical performance over a long period. Simultaneously, by optimizing the thickness and refractive index parameters of the cover glass, it can be ensured that the built-in microstructure layer 12 still effectively performs its anti-glare function and reduces internal reflections between the display panel 20 and the microstructure layer 12, further improving image clarity.

[0074] In this embodiment, the size parameters of the microstructure unit 121 are matched with the pixel size, which enables wide adaptation to displays of different resolutions, thereby achieving the optimal balance between anti-glare performance and display clarity.

[0075] The size parameters of the microstructure unit 121 are directly proportional to the pixel density (PPI, Pixels Per Inch) of the display panel 20. This proportionality means that key geometric parameters such as the lateral feature size X and vertical height Y of the microstructure unit 121 increase accordingly with the increase of the PPI of the display panel 20, so as to ensure that the optical modulation characteristics of the microstructure unit 121 match the physical size and spatial distribution of the display pixels.

[0076] By designing the size of the microstructure unit 121 to be proportional to the PPI, optical interference can be systematically avoided, ensuring that the incident light is uniformly scattered, thereby achieving low glare, low flicker and high definition display effects at wide viewing angles and different resolutions.

[0077] Please see Figure 10 , Figure 10 This is a schematic diagram of a second structure of an electronic device provided in an embodiment of this application.

[0078] The dimensions of the microstructure unit 121 are designed to match the pixel density (PPI) to adapt to screens of different resolutions. The lateral feature dimension X (a dimension parallel to the direction of the substrate 11) and the vertical height Y (a dimension perpendicular to the direction of the substrate 11) jointly regulate the light scattering characteristics and viewing angle distribution.

[0079] Please continue reading. Figure 10 as well as Figure 11 , Figure 11 The following are schematic diagrams of the microstructure unit provided in the embodiments of this application: (1) is a top view when the microstructure unit is a hexagonal frustum; (2) is a top view when the microstructure unit is a hemisphere; (3) is a top view when the microstructure unit is a quadrangular prism; (4) is a side view when the microstructure unit is a hexagonal frustum; (5) is a side view when the microstructure unit is a hemisphere; and (6) is a side view when the microstructure unit is a quadrangular prism.

[0080] The lateral feature size satisfies equation (1):

[0081] X = (PPI × 10) 2 ) / a (1);

[0082] Where X is the lateral feature size of a single microstructure unit 121; PPI (Pixels Per Inch) is the pixel density of the display panel 20, which is an important indicator for measuring screen clarity, and is expressed in pixels per inch; a is a constant in the range of approximately 9 to 15.

[0083] It is understandable, for example Figure 11 As shown in (1), (2) and (3), the lateral dimension feature can be the maximum width of the microstructure unit 121 in the direction parallel to the substrate 11.

[0084] The longitudinal height dimension satisfies equation (2):

[0085] Y = (PPI × 10) 4 ) / b (2);

[0086] Where Y is the vertical height dimension of a single microstructure unit 121; PPI is the pixel density of the display panel 20; and b is a constant in the range of approximately 60 to 80.

[0087] The height parameter directly affects the refraction and reflection path of light on the sidewall of the microstructure unit 121. Its coordinated design with the lateral dimension is the key to achieving wide-view uniform scattering and suppressing specular reflection.

[0088] The thickness Z of the anti-glare optical layer 10 satisfies equation (3):

[0089] Z = (PPI × 10) 4 ) / c (3);

[0090] Where Z is the thickness of the anti-glare optical layer 10, PPI is the pixel density of the display panel 20, and c is a constant in the range of approximately 5 to 10.

[0091] The pixel density of the display panel 20 and the size of the microstructure unit 121 together constitute a complete optical system. The optimized thickness design helps to reduce internal multiple reflections, reduce optical crosstalk, and maintain the mechanical stability of the display panel 20.

[0092] Taking PPI = 359 as an example, we can calculate: X(nm) = (359 × 10 2 ) / a≈2500~4000nm, Y(nm)=(359×10 4 ) / b=45000~60000nm, Z(nm)=(PPI×10 4 ) / c = 350,000~700,000nm. With this configuration, the flash point value can be reduced from 8~12 in the traditional AG solution to 3~4, a reduction of about 60%. The lower the flash point value, the less visual noise there is and the better the user experience; and the image clarity is significantly improved.

[0093] This design principle is applicable to various display panels 20 ranging from 6 to 8 inches in size and with resolutions from HD to 4K UHD, as shown in Table 1 below. All cases fall within the scope of this patent. As for other sizes of display panels 20 and different types of display technologies, the specific values ​​of their adaptation parameters a, b, and c need further verification and determination based on actual optical design and application scenarios, and are not listed here. However, the design principles of the optical path system architecture and microstructure unit 121 proposed in this application are still applicable in principle in such extended applications.

[0094] Table 1

[0095]

[0096] This application establishes a quantitative relationship between the dimensions (X, Y) of the microstructure unit 121, the thickness (Z) of the anti-glare optical layer 10, and the pixel density, systematically optimizing the balance between anti-glare performance and image clarity, overcoming the problems of increased flash point and image quality degradation caused by traditional AG layer processing. This electronic device 100 can be integrated into various electronic devices 100, significantly improving visibility in strong light environments and reducing power consumption.

[0097] In some embodiments, please refer to Figure 12 , Figure 12This is a schematic diagram of a third structure of the electronic device provided in the embodiments of this application. The display panel 20 also includes a liquid crystal cell 21, a first polarizer 22, and a second polarizer 23. The first polarizer 22 is disposed on the light-incident side of the liquid crystal cell 21 and is used to convert the unpolarized natural light emitted by the backlight module 30 into linearly polarized light in a specific direction before it is incident on the liquid crystal cell 21. The second polarizer 23 is disposed on the light-emitting side of the liquid crystal cell 21 and is used in conjunction with the first polarizer 22 to achieve brightness modulation of the image by filtering the polarization state of the emitted light. Together, they constitute the core light control structure of the liquid crystal display.

[0098] Please see Figure 13 , Figure 13 This is a schematic diagram of the structure of a liquid crystal cell provided in an embodiment of this application. The liquid crystal cell 21 sequentially includes a first glass layer 211, a driving circuit layer 212, a liquid crystal layer 213, a color filter layer 214, and a second glass layer 215. The first glass layer 211 and the second glass layer 215 provide sealing support and protection for the liquid crystal cell 21. The driving circuit layer 212 includes a thin-film transistor array and pixel electrodes, used to receive signals and generate an electric field to drive the liquid crystal molecules to deflect. The liquid crystal layer 213 undergoes an orientation change under the action of the electric field, modulating the polarization state of the light passing through it. The color filter layer 214 includes red, green, and blue filter units, used to perform color gamut segmentation of white light to achieve color image display.

[0099] The anti-glare optical layer 10 is disposed on the light-emitting side of the second polarizer 23, and its structure includes a substrate 11 and a microstructure layer 12 formed on the surface of the substrate 11. The microstructure layer 12 is composed of an array of micro- and nano-scale structural units distributed along the thickness direction of the substrate 11, and is used to regulate the light incident on its surface.

[0100] The anti-glare optical layer 10 has a dual optical modulation function: First, for the emitted light from the display of the electronic device 100 itself, this layer can effectively reduce interface reflection and light loss while maintaining its original propagation direction and light-gathering properties as much as possible, thereby ensuring high transmittance, high contrast, and original color reproduction of the displayed image; Second, for incident light from the external environment, the microstructure units 121 with rotational symmetry on their surface can disperse strong direct ambient light into uniform diffuse reflection light, significantly suppressing specular reflection and glare. These optical modulation functions greatly improve outdoor visibility and anti-glare capabilities while ensuring excellent image clarity, significantly improving the user experience of electronic devices in strong light environments.

[0101] Please see Figure 14 , Figure 14 This is a schematic diagram of a fourth structure of an electronic device provided in an embodiment of this application.

[0102] The electronic device 100 also includes a backlight module 30, which is disposed on the light-incident side of the display panel 20, located on the side of the first polarizer 22 away from the liquid crystal cell 21, and is used to provide a uniform and high-brightness surface light source for the liquid crystal display. Depending on the arrangement of the light sources, the backlight module 30 can be designed as a direct-lit backlight module 30 or an edge-lit backlight module 30. The direct-lit backlight module 30 arranges the light source array directly below the diffuser plate, offering advantages such as high brightness and multiple zones; the edge-lit backlight module 30 places the light source on the side of the light guide plate 31, which is more conducive to achieving a thinner and lighter electronic device 100. This application uses an edge-lit backlight module 30 as an example, a choice based on its significant adaptability to the ultra-thin electronic device 100.

[0103] The side-lit backlight module 30 includes a light guide plate 31 and a light source assembly 32. The light source assembly 32 is disposed on one side of the light-incident end face of the light guide plate 31, which is disposed on the light-incident side of the liquid crystal panel. The light guide plate 31 is typically made of polymethyl methacrylate or polycarbonate with high light transmittance, and its function is to convert the line light source located on the side into a uniform surface light source. The light source assembly 32 includes a photomask 321 and a light strip 322 disposed within the photomask 321. The light strip 322 is typically a surface-mount light-emitting diode array, and the light emitted by it is reflected and guided by the photomask 321 before efficiently entering the interior of the light guide plate 31 for propagation.

[0104] The side-lit backlight module 30 includes, sequentially along the light emission direction, a lower diffuser 33, a first brightness enhancement film 34, a second brightness enhancement film 35, and an upper diffuser 36. The lower diffuser 33, the first brightness enhancement film 34, the second brightness enhancement film 35, and the upper diffuser 36 are disposed on the light emission side of the light guide plate 31. The lower diffuser 33 and the upper diffuser 36 are used to further scatter light, eliminate smudges and hot spots, and improve brightness uniformity. The first brightness enhancement film 34 and the second brightness enhancement film 35 are typically prism films or reflective polarization brightness enhancement films; their stacked arrangement can effectively converge light and recover polarized redundant light, significantly improving front brightness and optical efficiency.

[0105] In addition, the side-lit backlight module 30 also includes a reflective film 37, which is disposed on the side of the light guide plate 31 away from the lower diffuser plate 33, i.e., at the bottom of the light guide plate 31. Its function is to reflect the light leaking to the bottom of the light guide plate 31 back into the light guide plate 31, thereby reducing light energy loss and improving light utilization and overall backlight brightness.

[0106] In summary, the electronic device 100 provided in this application can significantly suppress glare and specular reflection on the screen surface under conditions of strong outdoor light, indoor overhead lighting, or other high ambient light interference, while perfectly maintaining image clarity. By employing periodically arranged rotationally symmetric microstructure units 121, this solution fundamentally solves the flash point problem caused by traditional random microstructures. Testing shows that the flash point value of electronic devices using the anti-glare optical layer of this application can be significantly reduced from 8-12 in traditional chemical etching AG methods to 3-4, a reduction of over 60%, while maintaining a high light transmittance of greater than or equal to 90% under haze conditions of less than or equal to 5%. This effectively solves user pain points such as poor visibility under strong light, image quality degradation, and increased power consumption due to blindly increasing brightness in traditional devices, significantly improving the user experience.

[0107] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0108] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0109] The anti-glare optical layer and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An anti-glare optical layer, characterized in that, include: substrate; A microstructure layer is disposed on the surface of the substrate along the thickness direction of the substrate. The microstructure layer includes a plurality of microstructure units, and the projection of the microstructure units on the substrate is a rotationally symmetric pattern.

2. The anti-glare optical layer according to claim 1, characterized in that, The shape of a single microstructure unit is one of a triangular prism, a triangular frustum, a square prism, a square frustum, a hexagonal frustum, a hexagonal prism, or a hemisphere.

3. The anti-glare optical layer according to claim 1 or 2, characterized in that, At least a portion of the microstructure units are periodically distributed on the substrate surface.

4. The anti-glare optical layer according to claim 1 or 2, characterized in that, The side of the microstructure unit away from the substrate is parallel to the side of the substrate closer to the microstructure layer.

5. The anti-glare optical layer according to claim 4, characterized in that, The multiple microstructure units are coplanar on the side away from the substrate.

6. The anti-glare optical layer according to claim 1 or 2, characterized in that, The thickness of the anti-glare optical layer is greater than or equal to 1 μm; and / or the thickness of the microstructure layer is greater than or equal to 0.25 μm.

7. The anti-glare optical layer according to claim 1 or 2, characterized in that, The transmittance of the anti-glare optical layer is greater than or equal to 90%; and / or the haze of the anti-glare optical layer is 40% to 60%.

8. The anti-glare optical layer according to claim 1 or 2, characterized in that, The anti-glare optical layer has a Mohs hardness greater than or equal to 5; and / or, the elastic modulus of the anti-glare optical layer is greater than or equal to 5 GPa; and / or, the elongation at break of the anti-glare optical layer is greater than or equal to 2%.

9. An electronic device, characterized in that, include: Display panel; An anti-glare optical layer, wherein the anti-glare optical layer is the anti-glare optical layer according to any one of claims 1 to 8, and the anti-glare optical layer is disposed on the light-emitting side of the display panel.

10. The electronic device according to claim 9, characterized in that, The anti-glare optical layer is a cover glass, and the microstructure layer is disposed on the surface of the cover glass away from the display panel.

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