Anti-dazzle glass, display screen and electronic equipment

Abstract

The utility model discloses anti-dazzle glass, a display screen and electronic equipment, the anti-dazzle glass comprises a first surface and a plurality of microstructures, the first surface is the surface of the anti-dazzle glass in the thickness direction of the anti-dazzle glass, the plurality of microstructures are arranged on the first surface, the plurality of microstructures comprise concave parts and / or convex parts, the distance between the center points of the two adjacent microstructures is D, sigma D is the standard deviation of D, and sigma D is larger than 0 and smaller than or equal to 5 microns. According to the anti-dazzle glass, the display screen and the electronic equipment provided by the embodiment of the invention, moire patterns can be reduced or eliminated while the definition of the screen is ensured, so that the display effect and the visual experience of a user are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an anti-glare glass, a display screen and an electronic device. BACKGROUND

[0002] When an external light source is incident on the screen of an electronic device, a strong reflected light, i.e. glare, will be generated due to specular reflection, which will interfere with the user and cause the user to be unable to clearly see the screen.

[0003] A common solution is to cover the display screen of the electronic device with an anti-glare glass cover plate, which is usually roughened by etching to form a concave-convex structure on the surface of the smooth glass cover plate. The concave-convex structure has the effect of scattering light from the external environment towards the display screen in all directions, forming a diffuse reflection on the surface of the glass cover plate and reducing the intensity of the reflected light.

[0004] Although the anti-glare glass has a certain degree of anti-glare effect on the screen, it also has disadvantages. The concave-convex structure on the anti-glare glass is prone to interference with the pixels to form Moire patterns. Moire patterns are a visual result of interference between two lines or two objects at a constant angle and frequency. When the human eye cannot distinguish between the two lines or two objects, only the interference pattern can be seen. This optical phenomenon is called Moire pattern. Although the Moire pattern can be effectively eliminated by adding a haze film, the haze film will also cause the screen clarity to decrease. SUMMARY

[0005] The embodiments of the present application disclose an anti-glare glass, a display screen and an electronic device, which can reduce or eliminate Moire patterns while ensuring screen clarity, so as to improve the display effect and the visual experience of the user.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application discloses an anti-glare glass, comprising:

[0007] a first surface, the first surface being a surface of the anti-glare glass in the thickness direction thereof; and

[0008] a plurality of microstructures, the plurality of microstructures being arranged on the first surface, and the plurality of microstructures comprising concave portions and / or convex portions;

[0009] wherein the spacing between the center points of two adjacent microstructures is D, and σD is the standard deviation of D, wherein 0 < σD ≤ 5 μm.

[0010] As an optional implementation, in the embodiments of the first aspect of the present application, 0.5 μm ≤ σD ≤ 1 μm.

[0011] As an optional implementation, in the embodiment of the first aspect of the present application, Dave is the average value of D, wherein 10 μm≤Dave≤60 μm.

[0012] As an optional implementation, in the embodiment of the first aspect of the present application, 15 μm≤Dave≤30 μm.

[0013] As an optional implementation, in the embodiment of the first aspect of the present application, two adjacent microstructures are connected by a connecting surface.

[0014] A plane passing through the center points of two adjacent microstructures is a first plane, and a direction in the first plane and perpendicular to the thickness direction of the anti-glare glass is a first direction.

[0015] For two adjacent microstructures with the center points in the first plane, the maximum dimension of one of the microstructures in the first direction is W1, the maximum dimension of the other microstructure in the first direction is W2, and the dimension of the first cross-sectional profile of the connecting surface in the first direction is L1.

[0016] The area of the first surface is S1, and the sum of the projection areas of the connecting surface on the first surface is S2.

[0017] When the curvature of the first cross-sectional profile is less than 0.01 μm -1 , and 2L1 / (W1+L1+W2) > 5%, S2 / S1≤10%.

[0018] As an optional implementation, in the embodiment of the first aspect of the present application, the microstructure comprises a third surface and a fourth surface, and the fourth surface surrounds the third surface.

[0019] A plane passing through the center points of two adjacent microstructures is a first plane, and a direction in the first plane and perpendicular to the thickness direction of the anti-glare glass is a first direction.

[0020] For two adjacent microstructures with the center points in the first plane, the maximum dimension of one of the microstructures in the first direction is W1, the maximum dimension of the other microstructure in the first direction is W2, the distance between the two adjacent microstructures in the first direction is M, the dimension of the second cross-sectional profile of one of the microstructures in the first direction is L2, and the dimension of the second cross-sectional profile of the other microstructure in the first direction is L3.

[0021] The area of the first surface is S1, and the sum of the projected areas of the third surface on the first surface is S3;

[0022] Wherein, when the curvature of the second cross-section is less than 0.01 μm -1 , L2 / (W1+M / 2) > 5%, and L3 / (W2+M / 2) > 5%, S3 / S1≤10%.

[0023] As an optional implementation, in the embodiment of the first aspect of the present application, the adjacent two microstructures are connected by a connecting surface, the sum of the projected areas of the connecting surface on the first surface is S2, the cross-sectional profile of the connecting surface intersected by the first plane is a first cross-section, and the size of the first cross-section in the first direction is L1;

[0024] Wherein, when the curvature of the first cross-section is less than 0.01 μm -1 , and 2L1 / (W1+L1+W2) > 5%, (S2+S3) / S1≤10%.

[0025] As an optional implementation, in the embodiment of the first aspect of the present application, (S2+S3) / S1≤1%.

[0026] In a second aspect, the present application discloses a display screen, which has the anti-glare glass according to the first aspect.

[0027] In a third aspect, the present application discloses an electronic device, which has the display screen according to the second aspect.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] The anti-glare glass, display screen and electronic device provided by the embodiments of the present application can make the standard deviation of the spacing between the center points of the adjacent two microstructures satisfy the following relationship: 0 < σD≤5 μm, so that the plurality of microstructures are irregularly arranged on the first surface, thereby avoiding the plurality of microstructures arranged in a certain rule, such as avoiding the plurality of microstructures arranged uniformly on the first surface, so as to reduce or eliminate the moire patterns generated when the anti-glare glass is used with the display screen, thereby effectively improving the clarity when the anti-glare glass is used with the display screen, improving the display effect and the visual experience of the user, without the need to increase the fogging film, thereby ensuring the screen clarity. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

[0031] Figure 1 is a structural schematic diagram of an electronic device disclosed by the embodiments of the present application;

[0032] Figure 2 is an exploded structural schematic diagram of the electronic device disclosed by the embodiments of the present application;

[0033] Figure 3 is a first structural schematic diagram of a display screen disclosed by the embodiments of the present application;

[0034] Figure 4 is a second structural schematic diagram of the display screen disclosed by the embodiments of the present application;

[0035] Figure 5 is a first structural schematic diagram of an anti-reflection film disclosed by the embodiments of the present application;

[0036] Figure 6 is a second structural schematic diagram of the anti-reflection film disclosed by the embodiments of the present application;

[0037] Figure 7 is a third structural schematic diagram of the anti-reflection film disclosed by the embodiments of the present application;

[0038] Figure 8 is a first structural schematic diagram of anti-glare glass disclosed by the embodiments of the present application;

[0039] Figure 9 is a second structural schematic diagram of the anti-glare glass disclosed by the embodiments of the present application;

[0040] Figure 10 is a first cross-sectional view of a microstructure being cut by a first plane disclosed by the embodiments of the present application;

[0041] Figure 11 is a second cross-sectional view of the microstructure being cut by the first plane disclosed by the embodiments of the present application;

[0042] Figure 12 is a real photo of the cross section of the microstructure being cut by the first plane disclosed by the embodiments of the present application;

[0043] Figure 13 is a schematic diagram of fitting the topography curve of Figure 12 with a power function curve;

[0044] Figure 14Fig. 1 is a first contrastive diagram of a profile curve and a power function curve of a microstructure disclosed by an embodiment of the present application;

[0045] Figure 15 Fig. 2 is a second contrastive diagram of a profile curve and a power function curve of a microstructure disclosed by an embodiment of the present application;

[0046] Figure 16 Fig. 3 is a photograph of a microstructure disclosed by an embodiment of the present application;

[0047] Figure 17 Fig. 4 is a first sectional view of two adjacent microstructures intersected by a first plane disclosed by an embodiment of the present application;

[0048] Figure 18 Fig. 5 is a second sectional view of two adjacent microstructures intersected by a first plane disclosed by an embodiment of the present application.

[0049] Main figure mark explanation

[0050] 1000 - electronic device;

[0051] 100 - display screen; 100a - glass cover plate; 10 - anti-glare glass; 10a - first surface; 10b - second surface; 11 - microstructure; 11a - third surface; 11b - fourth surface; 111 - concave part; 112 - convex part; 113 - profile curve; 114 - edge; 115 - connecting surface; 116 - non-flat surface; 20 - anti-reflection film; 21 - film layer; 23 - glass substrate; 24 - nanostructure; 30 - display module;

[0052] 200 - device housing; 201 - frame; 202 - back cover. DETAILED DESCRIPTION

[0053] In order to make the objects, technical solutions and advantages of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. That is, the specific embodiments described herein are only used to explain the present application, and are not intended to limit the embodiments of the present application.

[0054] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0055] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] The terms "first", "second", and the like used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, a first surface can be referred to as a second surface, and similarly, a second surface can be referred to as a first surface. Both the first surface and the second surface are surfaces, but they are not the same surface.

[0057] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0058] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the description of the present application, it should be noted that the singular form "one", "an" and "said / this" can also include the plural form, unless the context clearly indicates otherwise. It should also be understood that the terms "include / contain" or "have" and the like specify the existence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the existence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0060] In addition, the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, for example, A and / or B can mean: A alone, A and B together, B alone and the like. In other words, the term "and / or" as used in the specification encompasses the association of any one or more items in the list with respect to each other.

[0061] In order to prevent external light sources from causing reflected strong light interference to the screen of the electronic device and affecting the visual recognition of the user, the electronic device on the market generally has an anti-glare (AG) glass on the screen to reduce the intensity of external reflected light, thereby solving the problem of reflection and glare of the display screen under environmental light sources.

[0062] At present, the glass with microstructures such as concave and / or convex structures on the surface is generally selected as the anti-glare (AG) glass.

[0063] Although the anti-glare glass allows the screen to have a certain degree of anti-glare effect, the applicant has found through research that the concave-convex structures on the glass, especially when the concave-convex structures are regularly and uniformly arranged, are easy to interfere with the pixels to form Moire patterns. The Moire pattern is a visual result of interference between two lines or two objects at a constant angle and frequency. When the human eye cannot distinguish the two lines or two objects, only the interference pattern can be seen, and this optical phenomenon is the Moire pattern. Although the Moire pattern can be effectively eliminated by adding a haze film, the haze film will also cause the screen clarity to decrease.

[0064] Therefore, the anti-glare glass provided in the embodiments of the present application can reduce or eliminate the Moire pattern while ensuring the screen clarity.

[0065] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in some embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0066] Please refer to Figure 1 , Figure 1 The structure of the electronic device in one implementation manner is shown in the schematic diagram. The electronic device 1000 provided in the embodiments of the present application can also be referred to as a mobile terminal (MT), a terminal, a user equipment (UE), a mobile station (MS) and the like.

[0067] In the present application, the specific product form of the electronic device can be a smart phone, a tablet personal computer, a learning machine, a notebook computer, a desktop computer, a Personal Digital Assistant (PDA), a laptop computer, an Ultra Mobile ~ Personal Computer (UMPC), a television, a wearable smart device (such as a smart watch, a smart wristband, an earphone, etc.), a vehicle-mounted device, a household appliance (such as an electric toothbrush, a flashlight, etc.), a game device (such as a game handle, a game rocker, a game mouse, etc.), a multimedia player, an electronic book reader, or other electronic products with a display screen. At this time, the anti-glare glass mentioned later is arranged on the display module of the display screen to reduce the specular reflection of ambient light on the display screen by using the anti-glare property of the anti-glare glass, form scattering, solve the problem of reflection and glare of the display screen under the ambient light source, and thus make the display effect of the display screen more clear.

[0068] It can be understood that the electronic device in the present application can be not only an electronic product with a display screen, but also an electronic product without a display screen, such as a car. At this time, the anti-glare glass mentioned later can be the windshield of the car, so that the driver can observe the field of view in the windshield without dazzling, reduce the formation of stray light to play a role of anti-glare, ensure the safety of driving, and reduce the incidence of traffic accidents. The form of the electronic device is not limited in the present application.

[0069] For the convenience of understanding and description, the structure of the electronic device 1000 provided by the present application is described below by taking the electronic device as a tablet computer.

[0070] Please refer to Figure 2 , Figure 2 is Figure 1The electronic device explosion diagram is shown. The electronic device 1000 provided by the embodiment of the present application includes a display screen 100 and a device shell 200, wherein the display screen 100 is mounted on the device shell 200, and the display side of the display screen 100 is arranged away from the device shell 200, and the display screen 100 is used to realize the picture display function of the electronic device 1000 of the present application. The device shell 200 is used to support, fix and protect the display screen 100, so that the display screen 100 fixed on the device shell 200 can normally realize its picture display function, and the device shell 200 can be used to install various electronic devices required by the electronic device 1000, such as a camera (specifically a front camera and / or a rear camera), a mainboard, a battery, a receiver, a microphone and the like.

[0071] At the same time, the device shell 200 can also form the fixing and protection effect on the display screen 100 and other various electronic devices or structures arranged inside the device shell 200 under the action of external force, such as falling, knocking, colliding and the like. And can form a sealing effect on the display screen 100 and other electronic devices or structures arranged inside the device shell 200, so as to avoid the invasion of external water vapor, dust and other impurities on the electronic devices or structures arranged inside the device shell 200.

[0072] Exemplarily, the device shell 200 can include a frame 201 and a back cover 202, and the back cover 202 is fixed to the frame 201. The back cover 202 can be fixedly connected to the frame 201 by adhesive, or the back cover 202 and the frame 201 can be an integral structure, that is, the back cover 202 and the frame 201 are an integral structure. The display screen 100 is located on the side of the frame 201 away from the back cover 202, at this time, the display screen 100 and the back cover 202 are respectively located on the two sides of the frame 201, and the display screen 100, the frame 201 and the back cover 202 jointly enclose the inside of the electronic device 1000.

[0073] Optionally, the display screen 100 can be a rigid display screen (flat screen) or a flexible display screen (curved screen). For example, the display screen 100 can be an organic light-emitting diode panel (OLED), an active-matrix organic light-emitting diode panel (AMOLED), a mini organic light-emitting diode panel, a micro light-emitting diode panel, a micro organic light-emitting diode panel, a quantum dot light-emitting diode panel (QLED), or a liquid crystal display panel (LCD).

[0074] It should be noted that, Figure 2 and the related drawings below only schematically show some components included in the electronic device 1000, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figure 2 and the related drawings below, that is, the structure schematically shown in the embodiments of the present application does not constitute a specific limitation on the electronic device 1000. In other embodiments of the present application, the electronic device 1000 can include more or fewer components than shown, or combine certain components, or split certain components, or different arrangement of components.

[0075] Please refer to Figure 3 , Figure 3 is Figure 2 The display screen 100 shown in some embodiments of the structure schematic diagram. The display screen 100 provided by the embodiments of the present application includes an anti-glare glass (AG glass) 10 and a display module 30, the anti-glare glass 10 is arranged on the display side of the display module 30, for example, covers the display side of the display module 30, so that the anti-glare property of the anti-glare glass 10 can be used to reduce the specular reflection of ambient light on the display screen 100, form scattering, solve the problem of reflection and glare of the display screen 100 under the ambient light source, so that the display effect of the display screen 100 can be more clear.

[0076] Please refer to Figure 4 ,Figure 4 is Figure 2 FIG. 1 is a structural schematic diagram of a display screen 100 in some embodiments. The display screen provided by the embodiments of the present application includes a glass cover plate 100a and a display module 30, the glass cover plate 100a is arranged on the display side of the display module 30, for example, the glass cover plate 100a is arranged on the display side of the display module 30.

[0077] The glass cover plate 100a includes an anti-glare glass (AG glass) 10, the anti-glare glass 10 is arranged on the display side of the display module 30, for example, the anti-glare glass 10 is arranged on the display side of the display module 30, so that the anti-glare property of the anti-glare glass 10 can be used to reduce the specular reflection of ambient light on the display screen 100, form scattering, solve the problem of reflection and glare of the display screen 100 under the ambient light source, so that the display effect of the display screen 100 can be clearer.

[0078] Further, the glass cover plate 100a further includes an anti-reflectance film (AR film) 20, the anti-reflectance film 20 is arranged on the side of the anti-glare glass 10 away from the display module 30, for example, the anti-reflectance film 20 is arranged on the side of the anti-glare glass 10 away from the display module 30, that is, the anti-glare glass 10 is arranged between the anti-reflectance film 20 and the display module 30.

[0079] The anti-reflectance film 20 is additionally arranged on the anti-glare glass 10, which can further reduce the specular reflectance, thereby facilitating to improve the anti-glare effect of the glass cover plate 100a; and the increase of the anti-reflectance film 20 can also effectively improve the bright room contrast, increase the brightness of the display screen 100, and improve the image clarity and visual comfort, so that the viewer can comfortably watch the content of the display screen 100.

[0080] The bright room contrast refers to the contrast performance of the display screen in a bright room environment, that is, the brightness ratio of the brightest area to the darkest area of the screen in a strong light environment (such as direct sunlight or indoor high-brightness lighting).

[0081] In some embodiments, the total reflectance of the glass cover plate is 1%-2%, for example, 1.5%-2%. For example, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9% or 2%, and the like.

[0082] When the above relationship is satisfied, the anti-reflectance film 20 and the anti-glare glass 10 can be easily processed and formed, the cost is reduced, the total reflectance of the glass cover plate 100a is lower, the image clarity and visual comfort are better improved, and the viewer can comfortably watch the content of the display screen 100.

[0083] When the total reflectivity of the glass cover plate 100a is less than 1%, for example, when the total reflectivity of the glass cover plate 100a is 0.5%, 0.7%, 0.8%, etc., the preparation difficulty of the anti-reflective film 20 and the anti-glare glass 10 is increased, the price of the glass cover plate 100a is relatively high, and the cost is increased. When the total reflectivity of the glass cover plate 100a is greater than 2%, the content displayed on the display screen cannot be clearly seen, and the viewing is affected.

[0084] In some embodiments, the specular reflectivity of the glass cover plate is 0.1%-0.35%, for example, 0.1%, 0.15%, 0.2%, 0.25%, 0.3% or 0.35%, etc.

[0085] When the above relationship is satisfied, the anti-reflective film 20 and the anti-glare glass 10 can be easily processed to reduce the cost, and the specular reflectivity of the glass cover plate 100a is lower, the image clarity and visual comfort are better improved, and the viewer can comfortably watch the content of the display screen 100.

[0086] wherein the reflectivity R=(n1-n2) / (n1+n2), n1 and n2 are the refractive indices of light from medium 1 entering medium 2, that is, n1 is the refractive index of the initial medium in which the incident light is located, for example, if the light enters the anti-reflective film from the air, n1 corresponds to the refractive index of the air, and n2 is the refractive index of the second medium in which the light enters, for example, in the above example, n2 corresponds to the refractive index of the anti-reflective film.

[0087] The performance of the glass cover plate 100a with or without the anti-reflective film 20 on the anti-glare glass 10 is tested, and the specific test results are shown in Table 1 below:

[0088] Clarity Reflective DOI Flash point Total reflectance Specular reflectance Anti-reflective film not provided on anti-glare glass 40％ 23％ 2.8％ 5.5％ 0.5％ Anti-reflective film provided on anti-glare glass 40％ 10％ 2.8％ 1.7％ 0.15％

[0089] Table 1

[0090] In Table 1 above and Tables 2-7 mentioned later, the clarity is represented by contrast, wherein the contrast is the difference in brightness between the brightest white and the darkest black in the image; and the brightness level relationship between the darkest black and the brightest white in the image is usually represented by gray scale, then the clarity (contrast) in the table=(gray value of high gray scale pixel-gray value of low gray scale pixel) / (gray value of high gray scale pixel+gray value of low gray scale pixel). Wherein, the gray value of the low gray scale pixel ranges from 0 to 85 (8-bit gray scale image), and the gray value of the high gray scale pixel ranges from 170 to 255 (8-bit gray scale image). It can be known that the higher the contrast, the more obvious the difference between light and dark in the image, and the better the details can be displayed, which means that the picture displayed on the display screen is clearer and the visual effect is better.

[0091] "Reflective DOI" is also known as Distinctness-Of-reflected-Image gloss, which is an aspect of gloss characterized by the sharpness of the image produced by the reflection of an object on a surface, and can also be written as Distinctness-Of-Image, which is also known as DOI, that is, image clarity, contour brightness, and is usually referred to as distinctness. It can be known that the lower the value of the reflective DOI, the less glare or reflection interference the display screen produces when reflecting ambient light, so that it can be displayed more clearly in a bright environment and the anti-glare effect is better.

[0092] It should be noted that when the AG glass is used, small bright spots will appear on the surface of the screen, and the position of the small bright spots will randomly move as the observer moves. This phenomenon is called a flash point. Generally, the measurement method of the flash point is as follows: a photograph is taken after the screen is fixed, the standard deviation of the brightness of the originally uniform display area of the screen is calculated, and then the standard deviation of the brightness and the average brightness of the screen can represent the flash point, that is, the flash point = the standard deviation of the brightness of the originally uniform display area of the screen / the average brightness of the screen. It can be known that the lower the value of the flash point, the fewer flash points the display screen produces, and the better the display effect and the visual experience of the user.

[0093] The total reflectance is the sum of the specular reflectance and the diffuse reflectance.

[0094] From Table 1, it can be seen that the reflective DOI, the total reflectance, and the specular reflectance are all reduced by covering the anti-glare glass with the anti-reflective film, among which the reflective DOI is reduced from 23% to 10%, the total reflectance is reduced from 5.5% to 1.7%, and the specular reflectance is reduced from 0.5% to 0.15%. It can be seen that by additionally providing the anti-reflective film 20 on the anti-glare glass 10, not only can the total reflectance and the specular reflectance be further reduced to improve the anti-glare effect of the glass cover plate 100a, but also the flash point can be effectively reduced to improve the image clarity and the visual comfort, so that the viewer can comfortably watch the content of the display screen 100.

[0095] In some embodiments, the ratio of the average reflectance of the anti-reflective film 20 to the reflectance of the anti-glare glass 10 is 1 / 4-1 / 2, for example, 1 / 4, 5 / 16, 3 / 8, 7 / 16, or 1 / 2, and the like.

[0096] When the ratio of the average reflectivity of the anti-reflective film 20 and the reflectivity of the anti-glare glass 10 is less than 1 / 4, the ambient light will be reflected multiple times at the interface between the anti-glare glass 10 and the anti-reflective film 20, which may form ghosting, light spots or "ghost" (especially in strong light environment), reducing the image clarity. Moreover, the overall light transmittance of the glass cover plate may be lower than expected, resulting in insufficient screen brightness, especially affecting the visibility in outdoor scenes. When the ratio of the average reflectivity of the anti-reflective film 20 and the reflectivity of the anti-glare glass 10 is greater than 1 / 2, the reflectivity of the anti-glare glass is too low, and its diffuse reflection ability is weakened, which cannot effectively disperse the incident light, resulting in obvious glare when strong light (such as sunlight) is directly incident, reducing the screen visibility. Moreover, it will also increase the difficulty of preparing the anti-glare glass 10, resulting in increased cost.

[0097] Therefore, when the above relationship is satisfied, the anti-reflective film 20 and the anti-glare glass 10 can be easily processed to form, thereby reducing the cost, while the image clarity and the overall light transmittance of the glass cover plate can be better improved, so that the viewer can comfortably watch the content of the display screen 100.

[0098] As an embodiment, Figure 5 is Figure 4 The structure diagram of the anti-reflective film 20 in some embodiments is shown. The anti-reflective film 20 can be an interference cancellation anti-reflective film. For example, different refractive index film layers can be deposited on the surface of the anti-glare glass 10 by sputtering method (such as magnetron sputtering, direct current sputtering, radio frequency sputtering, reactive sputtering, etc.), chemical plating (such as chemical vapor deposition (CVD)), etc. The different refractive index film layers constitute the anti-reflective film 20, so that the light waves reflected before and after the film layers interfere with each other and cancel out, thereby realizing the anti-reflective effect of interference cancellation, effectively reducing the reflected light, and making the glass cover plate 100a have better anti-glare effect.

[0099] Specifically, the anti-reflective film 20 can include a plurality of film layers 21 stacked along the thickness direction of the anti-glare glass 10 (for example, the up-down direction in Figure 4 , Figure 5 , the anti-reflective film 20 is directed to the anti-glare glass 10, for example, in the downward direction in Figure 4 , Figure 5 , the refractive index of each film layer 21 gradually changes.

[0100] As another embodiment, when the refractive index of the medium interface through which the light passes changes, a small part of the incident light will be consumed in the form of reflection, thereby reducing the reflected light.

[0101] Therefore, an example, as Figure 6 shown, Figure 6 is Figure 4 shown, the structure of the anti-reflective film 20 in some other embodiments, the gradient refractive index film layer can be prepared as an anti-reflective film 20, for example, the gradient refractive index film layer can be prepared by color inkjet printing, or by inclined sputtering process to achieve the purpose of reducing specular reflectance to improve the anti-glare effect. Among them, the gradient refractive index film layer refers to the refractive index of the film layer gradually changes along the film thickness direction to eliminate the interface between the film layers, but remains unchanged in the horizontal direction.

[0102] Specifically, the anti-reflective film 20 is a film layer whose refractive index gradually changes in the direction from the anti-reflective film 20 to the anti-glare glass 10.

[0103] Another example, as Figure 7 shown, Figure 7 is Figure 4 shown, the structure of the anti-reflective film 20 in some other embodiments, the anti-reflective film 20 includes a glass substrate 23 and a nanostructure 24, the glass substrate 23 is arranged on the anti-glare glass 10, and the nanostructure 24 is formed on the surface of the glass substrate 23 away from the anti-glare glass 10. At this time, the anti-reflective film 20 can be called a moth-eye anti-reflective film, and the nanostructure 24 can be a subwavelength structure, wherein the subwavelength structure refers to a structure similar to the moth eye, according to the effective medium theory (EMT), the structure refractive index is equivalent to the refractive index of the multilayer film with gradually changing refractive index, which can realize the gradual change of the refractive index from the air surface to the glass substrate, reduce the difference of the refractive index, not only can effectively reduce the reflectivity, but also solve the process problem between the multilayer anti-reflective film and the selection limitation of the anti-reflective film material.

[0104] Please refer to Figure 8 , Figure 8 is Figure 3 , Figure 4 shown, the structure of the anti-glare glass 10 in some embodiments. The anti-glare glass 10 provided by the embodiments of the present application includes a first surface 10a and a second surface 10b, the first surface 10a is the surface of the anti-glare glass 10 in the thickness direction (for example Figure 8 up and down direction) of the anti-glare glass 10, the second surface 10b is arranged away from the first surface 10a in the thickness direction of the anti-glare glass 10, and the second surface 10b is used to be close to the display module 30, that is, the second surface 10b is connected with the display module 30.

[0105] In some embodiments, the anti-glare glass 10 provided in this application further includes a plurality of microstructures 11, which are disposed on the first surface 10a. Each microstructure 11 includes a recess 111 and / or a protrusion 112; that is, all microstructures 11 can be recesses 111 (e.g., ...). Figure 8 As shown), they can all be protrusions 112 (as shown). Figure 9 As shown), some microstructures 11 can be concave 111 and other microstructures 11 can be convex 112.

[0106] Since the recessed portion 111 and the convex portion 112 can scatter light from the external environment onto the display screen in all directions, diffuse reflection is formed on the surface of the anti-glare glass 10, reducing the intensity of reflected light and thus achieving the anti-glare effect.

[0107] In this application, for ease of description, the direction parallel to the thickness of the anti-glare glass 10 (e.g.) Figure 10 The plane passing through the center points of at least two microstructures 11 (in the vertical direction) is defined as the first plane, and the direction within the first plane and perpendicular to the thickness direction of the anti-glare glass 10 is defined as the first direction, for example... Figure 10 The left and right directions within. The center point of microstructure 11 is typically the lowest point of the concave portion or the highest point of the convex portion.

[0108] In some embodiments, such as Figure 8 to Figure 10 As shown, the cross-sectional profile of the microstructure 11 intercepted by the first plane includes a morphology curve 113. The morphology curve 113 satisfies the following condition: the morphology curve is fitted by an objective function, which includes power functions. The average exponent of each power function is in the range of 1.5-3, such as 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9 or 3, etc.

[0109] This application uses power function curve fitting to fit the morphology curve of each microstructure 11 and controls the average exponent range of each power function within the range of 1.5-3 to constrain the morphology curve characteristics of the microstructure 11, so that the anti-glare glass 10 can simultaneously take into account the characteristics of good anti-glare effect, good clarity and low flash point, thereby obtaining an anti-glare glass 10 with good anti-glare effect, good clarity and low flash point.

[0110] Moreover, the application can match the change trend of the whole profile curve 113 of the microstructure 11 by fitting the profile curve 113 of the microstructure 11 with an exponential curve, so as to characterize the profile curve 113 of the microstructure 11, thereby obtaining all the profile features of the microstructure 11, and further preparing the anti-glare glass 10 with good anti-glare effect, high clarity and few flash points, or analyzing the influence of the microstructure 11 on the clarity and flash points, and obtaining the anti-glare glass 10 with good anti-glare effect, high clarity and few flash points.

[0111] In some embodiments, the objective function can only include the power function. In other embodiments, the objective function includes the power function and the trigonometric function, that is, in other embodiments, the objective function is a piecewise function composed of at least the power function and the trigonometric function.

[0112] As an embodiment, as shown in Figure 10 , a rectangular coordinate system is established in a plane, taking the position where the curvature of the profile curve 113 is zero as the coordinate origin, the first direction as the x-axis, and the thickness direction of the anti-glare glass as the z-axis.

[0113] As another embodiment, as shown in Figure 11 , the cross-sectional profile line of the microstructure 11 cut by the first plane includes two profile curves 113 symmetrically arranged about the thickness direction of the anti-glare glass, and a rectangular coordinate system is established in the first plane, taking the symmetric point of the two profile curves 113 as the coordinate origin, the first direction as the x-axis, and the thickness direction of the anti-glare glass as the z-axis.

[0114] In the present application, the profile curve 113 of the microstructure 11 satisfies the following power function formula:

[0115] z = zmax * (x / xmax)^γ;

[0116] wherein, Figure 10 and Figure 11 the coordinates of the M point in

[0117] As can be seen from the above function formula, the γ value is actually an exponential value related to curve fitting. By using power function curve fitting, the morphology curve 113 of microstructure 11 is characterized. Since this method can characterize the morphology curve 113 of microstructure 11 with a single parameter (i.e., the γ value), it can reduce the variables during fitting and increase the degree of fit, and has high simplicity and fitting accuracy.

[0118] like Figure 12 and Figure 13 As shown, Figure 12 and Figure 13 These are all real photos of the microstructure. Figure 12 and Figure 13 The fitted region highlighted in red indicates the location of the microstructure morphology curve. Figure 13 The x-axis is the horizontal axis, with units in micrometers (μm), and the y-axis is the vertical axis, with units in micrometers (μm). Figure 13 The coordinates of point M in the equation are (xmax, zmax). Figure 13 The blue curve in the image represents the power function curve for γ = 2.1. Figure 13 As can be seen, when γ is adjusted to 2.1, the power function curve and the morphology curve of the microstructure can basically match.

[0119] In order to characterize the changes in γ values ​​corresponding to each microstructure 11 on the entire anti-glare glass 10 as much as possible, and to characterize the characteristics of each microstructure 11, as well as its corresponding flash point, clarity, and anti-glare effect by the changes in γ values, it is necessary to take at least 50 sets of fitting data on the entire anti-glare glass 10. That is, it is necessary to take at least 50 γ values ​​corresponding to each microstructure 11 on the entire anti-glare glass 10 to calculate the average value γave and the standard deviation σγ of γ.

[0120] Among them, γave=(γ1+γ2+γ3+...+γn) / n.

[0121] σγ=(1 / n-1)*((γ1-γave)^2+(γ2-γave)^2+(γ3-γave)^2+...+(γn-γave)^2)^0.5.

[0122] Based on the above calculations, the average value γave and the standard deviation σγ of γ are limited so that the morphology curves 113 of each microstructure 11 on the anti-glare glass 10 can be approximately the same. For example, the concave and convex shapes and degrees of concave and convex shapes of each microstructure 11 can be approximately the same, so as to control the influence of each microstructure 11 on the flash point, clarity and anti-glare effect, and obtain an anti-glare glass 10 with good anti-glare effect, good clarity and low flash point.

[0123] In this application, the shape and degree of concavity of the power function curve can be adjusted by adjusting the value of γ, thereby adjusting the shape and degree of concavity of the morphology curve 113 of the microstructure 11, so as to control the influence of each microstructure 11 on the flash point, clarity and anti-glare effect.

[0124] For example, such as Figure 14 As shown, Figure 14 The x-axis is the horizontal axis, with units in micrometers (μm), and the y-axis is the vertical axis, with units in micrometers (μm). Figure 14 In the image, the original morphology curve of the microstructure, that is, the actual morphology curve of the microstructure (i.e., the blue curve), is distributed at five points, namely A, B, C, D, and E. The curvature of each point is different, and from... Figure 14 It can be seen that the radii of curvature at points A, B, C, D, and E gradually decrease from left to right. The radii of curvature at all five points are within the preset range of x1 - x2 (x1 > x2), for example, x1 = 2 μm. -1 -8μm -1 x2 = 23μm -1 -30μm -1 For example, x1 = 2μm -1 3μm -1 4μm -1 5μm -1 6μm -1 7μm -1 Or 8μm -1 Wait, x2 = 23μm -1 24μm -1 25μm -1 26μm -1 27μm -1 28μm -1 29μm -1 Or 30μm -1 And so on. When the radius of curvature of the original morphology curve of the microstructure is within the range of x1-x2, it is possible to facilitate the fabrication and formation of the microstructure while meeting the anti-glare requirements, improving clarity, and reducing flash point.

[0125] like Figure 14 As shown, when using a power function curve with γ = 2.5 for fitting, it can basically completely match the changes in the entire morphology curve and all morphological features.

[0126] like Figure 15 As shown, Figure 15The horizontal axis in the figure is x axis, with unit of micrometer (μm), and the vertical axis is z axis, with unit of micrometer (μm). When γ is adjusted to 2.2, each point of the original profile curve 113 can be basically matched. It can be seen that the power function curve fitting method can characterize the specific profile of the microstructure, and can completely describe the profile curve characteristics of the microstructure 11, and can effectively obtain the profile characteristics of the microstructure.

[0127] In some embodiments, 1.5≤γave≤2.4, such as 1.5≤γave≤1.7, 1.7≤γave≤1.8, 1.8≤γave≤1.9, 1.9≤γave≤2.0, 2.0≤γave≤2.1, 2.1≤γave≤2.2, 2.2≤γave≤2.3, or 2.3≤γave≤2.4, and the like. Exemplarily, γave=1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, or 2.4.

[0128] When the above relationship is satisfied, the concave-convex shape and the concave-convex degree of the profile curve 113 of the microstructure 11 can be constrained in a suitable range, so that the curvature radius of the profile curve 113 of most microstructures 11 can be within the range of x1-x2, thereby effectively balancing the contradiction between the anti-glare effect, the flash point, and the clarity while facilitating the formation of the microstructure 11, and thus the anti-glare glass 10 with good anti-glare effect and display effect can be prepared.

[0129] Preferably, 1.8≤γave≤2.2. Controlling the average value γave of γ within the range of 1.8-2.2 can constrain the concave-convex shape and the concave-convex degree of the profile curve 113 of the microstructure 11 in a more suitable range, so that the curvature radius of the profile curve 113 of most microstructures 11 can be within the range of x1-x2, thereby more effectively balancing the contradiction between the anti-glare effect, the flash point, and the clarity while facilitating the formation of the microstructure 11, and thus the anti-glare glass 10 with better anti-glare effect and display effect can be prepared.

[0130] The performance of the anti-glare glass with different values of γave was tested in the present application. It can be understood that in order to illustrate the influence of γave on the performance of the anti-glare glass 10, the variables such as clarity, σD, Dave, S2, and S3 mentioned later need to be controlled during the test.

[0131] For example, the performance of the anti-glare glass 10 with different values of γave was tested when the clarity was 35%, σD=0.14, Dave=25, and (S2+S3) / S1=1%, and the specific test results are shown in Table 2.

[0132]

[0133]

[0134] Table 2

[0135] Another example, the performance of anti-glare glass 10 with clarity of 50%, σD=0.14, Dave=25, (S2+S3) / S1=1%, and different values of γave was tested, and the test results are shown in Table 3 below.

[0136] Specific values of γave Clarity Reflective DOI Flash point γave = 1.5 50％ 35％ 2.1％ γave = 1.8 50％ 32％ 2.3％ γave = 2.0 50％ 30％ 2.5％ γave = 2.1 50％ 28％ 3.5％ γave = 2.2 50％ 29％ 4.2％ γave = 2.4 50％ 30％ 5.0％

[0137] Table 3

[0138] From the above Tables 2 and 3, it can be seen that as γave increases, the reflection DOI first decreases and then increases, and the sparkle increases gradually.

[0139] From the above Table 2, when γave is less than 1.5, although the sparkle is less, the reflection DOI is relatively high, making it difficult for the display screen to display more clearly in a bright environment; and when γave is greater than 3.0, not only is the reflection DOI relatively high, making it difficult for the display screen to display more clearly in a bright environment, but also the sparkle is relatively high, and the display effect and the user's visual experience. Therefore, the present application controls γave in the range of 1.5-3.0, which can make the display screen display more clearly in a bright environment, has a good anti-glare effect, reduces the sparkle, and improves the display effect and the user's visual experience.

[0140] Comparing Tables 2 and 3, when 1.8≤γave≤2.2, the clarity can reach 50% under the condition that the sparkle is less than 5% and the reflection DOI is less than 35%, therefore, the present application preferably controls it in the range of 1.8-2.2, which can effectively balance the contradiction among the anti-glare effect, the sparkle, and the clarity, and thus the anti-glare glass 10 with better anti-glare effect and display effect can be prepared.

[0141] In some embodiments, 0.04 < σγ < 0.15, such as 0.04 < σγ < 0.05, 0.05 ≤ σγ < 0.06, 0.06 ≤ σγ < 0.07, 0.07 ≤ σγ < 0.08, 0.08 ≤ σγ < 0.09, 0.09 ≤ σγ < 0.1, 0.1 ≤ σγ < 0.13, or 0.13 ≤ σγ < 0.15, and the like. Exemplarily, σγ = 0.045, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, or 0.145, and the like.

[0142] When the above relationship is satisfied, the morphology curves 113 of most microstructures 11 on the anti-glare glass 10 can be approximately the same. For example, the γ value corresponding to the morphology curves 113 of most microstructures 11 can be within the range of 1.5-2.4 as much as possible, so that the concave and convex shapes and degrees of concave and convex shapes of the morphology curves 113 of each microstructure can be approximately the same, so as to control the influence of each microstructure 11 on the flash point, clarity and anti-glare effect, and obtain an anti-glare glass 10 with good anti-glare effect, good clarity and low flash point.

[0143] Preferably, 0.05 < σγ < 0.08. By controlling the average value σγ of γ within the range of 0.05-0.08, the morphology curves 113 of each microstructure 11 on the anti-glare glass 10 can be made to have approximately the same characteristics. For example, the γ value corresponding to the morphology curves 113 of each microstructure 11 can be made to be within the range of 1.5-2.4 as much as possible, so that the concavity and convexity of the morphology curves 113 of each microstructure 11 can be approximately the same. This controls the influence of each microstructure 11 on the flash point, clarity, and anti-glare effect, resulting in an anti-glare glass 10 with better anti-glare effect, better clarity, and fewer flash points.

[0144] The applicant's research found that the proportion of the planar area on the glass surface affects the anti-glare effect of the anti-glare glass. The smaller the proportion of the planar area on the glass surface, the better the anti-glare effect of the anti-glare glass. Therefore, in order to maximize the anti-glare effect and make full use of the light scattering ability of the fixed area, it is necessary to reduce the proportion of the planar area on the glass surface.

[0145] In addition, the applicant's research also found that the planar regions are mainly distributed in two places: one is the central position of the microstructure, such as the bottom surface of the concave part or the top surface of the convex part; the other is the position where two adjacent microstructures intersect.

[0146] In some embodiments, such as Figure 16 As shown, the intersection of two adjacent microstructures 11 has an edge, or the intersection of two adjacent microstructures 11 has a smooth transition. This avoids the formation of a planar area at the intersection of two adjacent microstructures 11, thus preventing light reflection in the planar area, reducing specular reflectivity, and improving the anti-glare effect of the anti-glare glass.

[0147] In some embodiments, such as Figure 17 As shown, the cross-sectional profile of the microstructure 11 intercepted by the first plane includes the thickness direction of the anti-glare glass (e.g., Figure 17Two symmetrical topographic curves 113 are arranged in the vertical direction. The connection between the two topographic curves 113 is smoothly transitioned, or the connection between the two topographic curves 113 is formed with an edge. This avoids the formation of a planar area at the connection between the two topographic curves 113, that is, avoids the formation of a planar area on the bottom surface of the concave part or the top surface of the convex part, so as to avoid light reflection on the planar area, thereby reducing the specular reflectivity and improving the anti-glare effect of the anti-glare glass 10.

[0148] In this application, two adjacent microstructures 11 are connected by a connecting surface 115, and each microstructure 11 includes a third surface 11a and a fourth surface 11b. When the microstructure 11 is a concave part, the third surface 11a can be understood as the bottom surface of the concave part, and when the microstructure 11 is a convex part, the third surface 11a can be understood as the top surface of the convex part. The fourth surface 11b surrounds and connects to the periphery of the third surface 11a.

[0149] In some embodiments, the anti-glare glass 10 further includes a non-planar surface 116, which includes a connecting surface 115 connecting two adjacent microstructures 11, and / or, the non-planar surface 116 includes a third surface 11a of the microstructure 11, wherein the non-planar surface 116 can be understood as a curved surface, arc surface, etc.

[0150] The above design involves making the connecting surface 115 between two adjacent microstructures 11, and / or designing the third surface 11a of the microstructure 11 as a non-planar surface 116. This avoids the formation of a planar area at the intersection of two adjacent microstructures 11, and / or avoids the formation of a planar area on the bottom surface of the concave portion or the top surface of the convex portion, so as to avoid light reflection on the planar area, thereby reducing the specular reflectivity and improving the anti-glare effect of the anti-glare glass 10.

[0151] In some embodiments, such as Figure 18 As shown, the first plane passes through the center point of two adjacent microstructures 11, and the direction within the first plane and perpendicular to the thickness direction of the anti-glare glass is the first direction. For example, the thickness direction of the anti-glare glass can be understood as... Figure 18 The vertical direction in the middle, the first direction can be understood as Figure 18 The cross-sectional outline of the connecting surface 115 intercepted by the first plane is the first section line, the cross-sectional outline of the third surface 11a intercepted by the first plane is the second section line, and the cross-sectional outline of the fourth surface 11b intercepted by the first plane includes two morphological curves 113 spaced apart, with the second section line connecting the two morphological curves 113.

[0152] For two adjacent microstructures 11 with their center points located in the first plane, one of which has a maximum dimension in the first direction of W1, the other has a maximum dimension in the first direction of W2, and the distance between the two adjacent microstructures 11 in the first direction is M, the size of the first cross-section in the first direction is L1 (wherein L1 = M), the size of the second cross-section of one of the microstructures 11 in the first direction is L2, and the size of the second cross-section of the other microstructure 11 in the first direction is L3.

[0153] Moreover, the area of the first surface 10a is S1, the sum of the projected areas of the connecting surfaces 115 on the first surface is S2, and the sum of the projected areas of the third surfaces 11a on the first surface is S3.

[0154] In some embodiments, 2L1 / (W1+L1+W2)≤5%, such as 0<2L1 / (W1+L1+W2)≤1%, 1%≤2L1 / (W1+L1+W2)≤2%, 2%≤2L1 / (W1+L1+W2)≤3%, 3%≤2L1 / (W1+L1+W2)≤4%, or 4%≤2L1 / (W1+L1+W2)≤5%, and the like. Exemplarily, 2L1 / (W1+L1+W2)=0.1%, 0.02%, 0.3%, 0.04%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, or 5%, and the like.

[0155] When the above relationship is satisfied, the size of the first cross-section in the first direction is relatively short, and the connecting surface 115 can be approximately regarded as an edge rather than a plane, so as to avoid forming a planar area at the intersection of the two adjacent microstructures 11, to avoid the reflection of light on the planar area, thereby reducing the specular reflectance and improving the anti-glare effect of the anti-glare glass.

[0156] In some embodiments, L2 / (W1+M / 2)≤5%, for example, 0

[0157] When the above relationship is satisfied: L2 / (W1+M / 2)≤5%, and L3 / (W2+M / 2)≤5%, the size of the second cross line in the first direction is relatively short, the third surface 11a can be approximately regarded as an edge rather than a plane, and a planar area can be avoided on the bottom surface of the concave portion or the top surface of the convex portion to avoid reflection of light on the planar area, thereby reducing the specular reflectance and improving the anti-glare effect of the anti-glare glass.

[0158] It can be understood that when the curvature of the first cross line is less than 0.01 μm -1 , and 2L1 / (W1+L1+W2)>5%, the first cross line can be approximately regarded as a straight line, and the connecting surface 115 can be approximately regarded as a plane.

[0159] Therefore, in some embodiments, S2 / S1≤10%, for example, 0

[0160] When the above relationship is satisfied, the area ratio of the connecting surface 115 on the first surface can be reduced, the area ratio of the planar region on the first surface can be reduced, thereby facilitating the reduction of the light reflectivity of the anti-glare glass, improving the scattering ability of the anti-glare glass to light, so that the anti-glare effect of the anti-glare glass can be effectively improved, and the anti-glare glass has good anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0161] Preferably, S2 / S1≤1%. In this way, the area ratio of the connecting surface 115 on the first surface can be further reduced, the area ratio of the planar region on the first surface can be further reduced, the light reflectivity of the anti-glare glass can be further reduced, the scattering ability of the anti-glare glass to light can be further improved, so that the anti-glare effect of the anti-glare glass can be further improved, and the anti-glare glass has better anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0162] The performance of the anti-glare glass with different values of S2 / S1 is tested in the present application, and the specific test results are shown in Table 4:

[0163] Specific values of S2 / S1 Reflective DOI Flash point S2 / S1 = 0.5 15％ 2.8％ S2 / S1 = 1 18％ 2.6％ S2 / S1 = 5 25％ 2.5％ S2 / S1 = 10 30％ 2.3％ S2 / S1 = 12 37％ 2.2％ S2 / S1 = 30 45％ 2.1％

[0164] Table 4

[0165] From Table 4, it can be seen that as the ratio of S2 and S1 increases, the reflection DOI gradually increases, and the flash point gradually decreases. When S2 / S1≤10%, the reflection DOI can be reduced to less than 35%, and therefore the ratio of S2 and S1 is controlled to be less than or equal to 10%, which is beneficial to reduce the light reflectivity of the anti-glare glass and improve the light scattering ability of the anti-glare glass, thereby effectively improving the anti-glare effect of the anti-glare glass, so that the anti-glare glass has good anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0166] Similarly, when the curvature of the second tangent line is less than 0.01 μm -1 When L2 / (W1+M / 2)>5% and L3 / (W2+M / 2)>5%, the second tangent line can be approximately regarded as a straight line, and the third surface 11a can be approximately regarded as a plane.

[0167] Therefore, in some embodiments, S3 / S1≤10%, for example, 0<S3 / S1≤0.01%, 0.01%<S3 / S1≤0.03%, 0.03%<S3 / S1≤0.05%, 0.05%<S3 / S1≤0.07%, 0.07%<S3 / S1≤0.09%, 0.09%<S3 / S1≤1%, 1%<S3 / S1≤2%, 2%<S3 / S1≤3%, 3%<S3 / S1≤4%, 4%<S3 / S1≤5%, 5%<S3 / S1≤6%, 6%<S3 / S1≤7%, 7%<S3 / S1≤8%, 8%<S3 / S1≤9%, or 9%<S3 / S1≤10%, and the like. Exemplarily, S3 / S1=0.005%, 0.01%, 0.015%, 0.02%, 0.025%, 0.03%, 0.035%, 0.04%, 0.045%, 0.05%, 0.055%, 0.06%, 0.065%, 0.07%, 0.075%, 0.08%, 0.085%, 0.09%, 0.095%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, or 10%, and the like.

[0168] When the above relationship is satisfied, the area ratio of the third surface 11a on the first surface can be reduced, and the area ratio of the plane region on the first surface can be reduced, which is beneficial to reduce the light reflectivity of the anti-glare glass and improve the light scattering ability of the anti-glare glass, thereby effectively improving the anti-glare effect of the anti-glare glass, so that the anti-glare glass has good anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0169] Preferably, S3 / S1≤1%. In this way, the area ratio of the third surface 11a on the first surface can be further reduced, the area ratio of the planar region on the first surface can be further reduced, the light reflectivity of the anti-glare glass can be further reduced, the light scattering ability of the anti-glare glass can be further improved, and thus the anti-glare effect of the anti-glare glass can be further improved, and the anti-glare glass has better anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0170] The performance of the anti-glare glass with different S3 / S1 values is tested in the present application, and the specific test results are shown in Table 5.

[0171] Specific values of S3 / S1 Reflective DOI Flash point S3 / S1 = 0.5 15％ 2.8％ S3 / S1 = 1 18％ 2.7％ S3 / S1 = 5 23％ 2.6％ S3 / S1 = 10 28％ 2.4％ S3 / S1 = 12 37％ 2.3％ S3 / S1 = 20 40％ 2.2％

[0172] Table 5

[0173] As can be seen from Table 5, as the ratio of S3 and S1 increases, the reflection DOI gradually increases, and the sparkle is gradually reduced. When S3 / S1≤10%, the reflection DOI can be reduced to less than 35%, and thus the ratio of S3 and S1 is controlled to be less than or equal to 10% in the present application, which is beneficial to reduce the light reflectivity of the anti-glare glass, improve the light scattering ability of the anti-glare glass, and thus effectively improve the anti-glare effect of the anti-glare glass, so that the anti-glare glass has better anti-glare effect, and the viewer can comfortably watch the content of the display screen.

[0174] The curvature of the first tangent line is less than 0.01 μm -1 , and 2L1 / (W1+L1+W2) > 5%, and the curvature of the second tangent line is less than 0.01 μm -1When L2 / (W1+M / 2) > 5% and L3 / (W2+M / 2) > 5%, (S2+S3) / S1≤10%, for example, 0 < (S2+S3) / S1≤0.01%, 0.01% < (S2+S3) / S1≤0.03%, 0.03% < (S2+S3) / S1≤0.05%, 0.05% < (S2+S3) / S1≤0.07%, 0.07% < (S2+S3) / S1≤0.09%, 0.09% < (S2+S3) / S1≤1%, 1% < (S2+S3) / S1≤2%, 2% < (S2+S3) / S1≤3%, 3% < (S2+S3) / S1≤4%, 4% < (S2+S3) / S1≤5%, 5% < (S2+S3) / S1≤6%, 6% < (S2+S3) / S1≤7%, 7% < (S2+S3) / S1≤8%, 8% < (S2+S3) / S1≤9%, or 9% < (S2+S3) / S1≤10%, and so on. For example, (S2+S3) / S1=0.005%, 0.01%, 0.015%, 0.02%, 0.025%, 0.03%, 0.035%, 0.04%, 0.045%, 0.05%, 0.055%, 0.06%, 0.065%, 0.07%, 0.075%, 0.08%, 0.085%, 0.09%, 0.095%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, or 10%, and so on.

[0175] When the above relationship is satisfied, the area ratio of the planar region on the first surface can be reduced, thereby reducing the light reflectivity of the anti-glare glass, improving the scattering ability of the anti-glare glass to light, and thus effectively improving the anti-glare effect of the anti-glare glass, so that the viewer can comfortably watch the content of the display screen.

[0176] Preferably, (S2+S3) / S1≤1%. In this way, the area ratio of the planar region on the first surface can be further reduced, the light reflectivity of the anti-glare glass is further reduced, the scattering ability of the anti-glare glass to light is further improved, and thus the anti-glare effect of the anti-glare glass is further improved, and the anti-glare glass has better anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0177] The performance of the anti-glare glass with different values of (S2+S3) / S1 is tested in the present application, and the specific test results are as follows

[0178] Table 6 shows:

[0179]

[0180]

[0181] Table 6

[0182] From the above table 6, it can be seen that as (S2+S3) / S1 increases, the reflection DOI gradually increases, and the flash point gradually decreases. When (S2+S3) / S1≤10%, the reflection DOI can be reduced to less than 35%, therefore, the present application controls (S2+S3) / S1 in the range of less than or equal to 10%, which is beneficial to reduce the light reflectivity of the anti-glare glass and improve the light scattering ability of the anti-glare glass, thereby effectively improving the anti-glare effect of the anti-glare glass, so that the anti-glare glass has good anti-glare effect, so that the viewer can comfortably watch the content of the display screen.

[0183] Applicants have found that when a plurality of microstructures 11 are arranged in a certain rule, for example, a plurality of microstructures 11 are uniformly arranged on the first surface, it will seriously affect the anti-glare effect of the anti-glare glass, and when the anti-glare glass is arranged on the display screen, it is easy to interfere with the pixels to form Moire lines.

[0184] Therefore, the applicant also limits the arrangement of the microstructure 11, mainly using the following two parameters for constraint: one is the arrangement disorder degree of the microstructure 11, and the other is the average distance of the microstructure 11, that is, the average value of the distance of the microstructure 11.

[0185] Among them, the arrangement disorder degree of the microstructure 11 is mainly represented by the standard deviation of the distance of the microstructure 11.

[0186] In the present application, in order to facilitate the description, the distance between the center points of the adjacent two microstructures 11 is configured as D, the standard deviation of D is configured as σD, and the average value of D is configured as Dave.

[0187] Among them, σD=(1 / n-1)*((D1-Dave)^2+(D2-Dave)^2+(D3-Dave)^2+…+(Dn-Dave)^2)^0.5.

[0188] Dave=(D1+D2+D3+…+Dn) / n.

[0189] Among them, the distance D between the center points of the adjacent two microstructures 11 can be measured separately or tested by image processing method, and the method is not limited.

[0190] The arrangement disorder degree of the microstructures 11 can be obtained by counting the distance D between the center points of two adjacent microstructures 11 in a certain area (for example, the number of microstructures 11 is greater than 5000), recording as D1, D2, D3, …, Dn, and then calculating the standard deviation to obtain the standard deviation σD of D. Then, the greater the σD, the greater the arrangement disorder degree of the microstructures 11, and the more chaotic and irregular the arrangement of the plurality of microstructures; the smaller the σD, the smaller the arrangement disorder degree of the microstructures 11, and the more orderly and regular the arrangement of the plurality of microstructures.

[0191] The average value Dave of D can be obtained by counting the distance D between the center points of two adjacent microstructures 11 in a certain area (for example, the number of microstructures 11 is greater than 5000), recording as D1, D2, D3, …, Dn, and then calculating the average value.

[0192] In some embodiments, 0 < σD≤ 5 μm, or 0.10 μm < σD≤ 5 μm, for example, 0 < σD≤ 0.1 μm, 0.1 μm < σD≤ 0.2 μm, 0.2 μm < σD≤ 0.3 μm, 0.4 μm < σD≤ 0.5 μm, 0.5 μm < σD≤ 0.7 μm, 0.7 μm < σD≤ 0.9 μm, 0.9 μm < σD≤ 1 μm, 1 μm < σD≤ 1.5 μm, 1.5 μm < σD≤ 2 μm, 2 μm < σD≤ 2.5 μm, 2.5 μm < σD≤ 3 μm, 3 μm < σD≤ 3.5 μm, 3.5 μm < σD≤ 4 μm, 4 μm < σD≤ 4.5 μm, or 4.5 μm < σD≤ 5 μm, and the like. For example, σD= 0.03 μm, 0.05 μm, 0.07 μm, 0.09 μm, 0.1 μm, 0.15 μm, 0.2 μm, 0.25 μm, 0.3 μm, 0.35 μm, 0.4 μm, 0.45 μm, 0.5 μm, 0.55 μm, 0.6 μm, 0.65 μm, 0.7 μm, 0.75 μm, 0.8 μm, 0.85 μm, 0.9 μm, 0.95 μm, 1 μm, 1.3 μm, 1.5 μm, 1.7 μm, 1.9 μm, 2 μm, 2.2 μm, 2.5 μm, 2.7 μm, 3 μm, 3.3 μm, 3.5 μm, 3.8 μm, 4 μm, 4.3 μm, 4.5 μm, 4.8 μm, or 5 μm, and the like.

[0193] When the above relationship is satisfied, the plurality of microstructures 11 can be irregularly arranged on the first surface 10a to avoid the plurality of microstructures 11 being arranged in a certain rule, for example, to avoid the plurality of microstructures 11 being uniformly arranged on the first surface, thereby reducing or eliminating the moire patterns generated when the anti-glare glass is used with the display module, thereby effectively improving the clarity when the anti-glare glass is used with the display module, and improving the display effect and the user's visual experience.

[0194] Preferably, 0.5 pm≤σD≤1 pm. When the above relationship is satisfied, the plurality of microstructures 11 can be irregularly arranged on the first surface while avoiding the arrangement of the microstructures 11 being too sparse to ensure the anti-glare effect, reducing or eliminating the moire patterns generated when the anti-glare glass is used with the display module, thereby effectively improving the clarity when the anti-glare glass is used with the display module, improving the display effect and the user's visual experience.

[0195] In some embodiments, 10 pm≤Dave≤60 pm, for example, 10 pm≤Dave≤15 pm, 15 pm≤Dave≤20 pm, 20 pm≤Dave≤25 pm, 25 pm≤Dave≤30 pm, 30 pm≤Dave≤35 pm, 35 pm≤Dave≤40 pm, 40 pm≤Dave≤45 pm, 45 pm≤Dave≤50 pm, 50 pm≤Dave≤55 pm, or 55 pm≤Dave≤60 pm, and the like. Illustratively, Dave=10 pm, 12 pm, 14 pm, 15 pm, 16 pm, 17 pm, 18 pm, 19 pm, 20 pm, 21 pm, 22 pm, 23 pm, 24 pm, 25 pm, 26 pm, 27 pm, 28 pm, 29 pm, 30 pm, 32 pm, 35 pm, 38 pm, 40 pm, 43 pm, 45 pm, 47 pm, 50 pm, 52 pm, 54 pm, 55 pm, 57 pm, 58 pm, 59 pm, or 60 pm, and the like.

[0196] If Dave<10 pm, the number of microstructures increases, thereby increasing the difficulty of manufacturing the anti-glare glass; and when Dave>60 pm, the number of microstructures decreases, making it easier for the plurality of microstructures to be arranged in a certain rule, thereby easily generating moire patterns. Therefore, the present application controls Dave in the range of 10 pm-60 pm, which can reduce the difficulty of manufacturing the anti-glare glass, thereby reducing the cost while avoiding the plurality of microstructures 11 arranged in a certain rule, for example, avoiding the plurality of microstructures 11 arranged uniformly on the first surface, thereby reducing or eliminating the moire patterns generated when the anti-glare glass is used with the display module, thereby effectively improving the clarity when the anti-glare glass is used with the display module, improving the display effect and the user's visual experience.

[0197] Preferably, 15 μm≤Dave≤30 μm. When the above relationship is satisfied, the manufacturing difficulty of the anti-glare glass can be further reduced, the cost is further reduced, the plurality of microstructures 11 can be arranged more irregularly on the first surface, the moire generated when the anti-glare glass is used with the display module is further reduced or eliminated, the clarity when the anti-glare glass is used with the display module can be greatly improved, and the display effect and the visual experience of the user are greatly improved.

[0198] The performance of the anti-glare glass 10 with different σD and Dave is tested, and the specific test results are shown in Table 7.

[0199] Specific values of σD and Dave Reflective DOI Flash point σD = 0, Dave = 5 μm 80％ 2.2％ σD = 5 μm, Dave = 5 μm 8％ 10％ σD = 5 μm, Dave = 35 μm 13％ 3.6％ σD = 3 μm, Dave = 25 μm 15％ 2.8％ σD = 7 μm, Dave = 25 μm 10％ 5.0％ σD = 3 μm, Dave = 65 μm 16％ 5.8％

[0200] Table 7

[0201] From Table 7, when σD=0, the reflection DOI is as high as 80%, the anti-glare effect and the display effect are poor; when σD>0, the reflection DOI is reduced, but when Dave<15 μm or Dave>60 μm, the sparkle is relatively high, higher than 5%, the display screen generates relatively more sparkles, resulting in poor visual comfort of the viewer; when σD<5 μm, the sparkle is still relatively high, about 5%, the display screen generates relatively more sparkles, resulting in poor visual comfort of the viewer. Therefore, σD is controlled in the range of 0-5 μm, and on the basis, Dave is controlled in the range of 10 μm-60 μm, the moire generated when the anti-glare glass is used with the display module can be reduced or eliminated, the clarity of the anti-glare glass is improved, the sparkle is reduced, and the visual comfort of the viewer is improved.

[0202] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0203] In addition, the above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the content of the present application should not be understood as a limitation, the protection scope of the present application should be subject to the appended claims.

Claims

1. Anti-glare glass, characterized in that, The anti-glare glass comprises: a first surface, which is a surface of the anti-glare glass in a thickness direction thereof; and a plurality of microstructures disposed on the first surface, and the plurality of microstructures comprise concave portions and / or convex portions; wherein a spacing between center points of two adjacent microstructures is D, and σD is a standard deviation of D, wherein 0 < σD ≤ 5 μm.

2. The anti-glare glass according to claim 1, characterized in that, 0.01 μm ≤ σD ≤ 5 μm, or 0.5 μm ≤ σD ≤ 1 μm.

3. The anti-glare glass according to claim 1, characterized in that, Dave is an average value of D, wherein 10 μm ≤ Dave ≤ 60 μm.

4. The anti-glare glass according to claim 3, characterized in that, 15 μm ≤ Dave ≤ 30 μm.

5. The anti-glare glass according to any one of claims 1 to 4, characterized in that, The two adjacent microstructures are connected by a connecting surface; a plane parallel to the thickness direction of the anti-glare glass and passing through the center points of the two adjacent microstructures is a first plane, a direction in the first plane and perpendicular to the thickness direction of the anti-glare glass is a first direction, and a cross-sectional profile line of the connecting surface intersected by the first plane is a first cross line; for the two adjacent microstructures with the center points in the first plane, a maximum dimension of one of the microstructures in the first direction is W1, a maximum dimension of the other microstructure in the first direction is W2, and a dimension of the first cross line in the first direction is L1; an area of the first surface is S1, and a sum of projected areas of the connecting surface on the first surface is S2; wherein the curvature of the first cutline is less than 0.01 μm -1 and 2L1 / (W1+L1+W2) > 5%, S2 / S1 < 10%.

6. The anti-glare glass according to any one of claims 1 to 4, characterized in that, the microstructure comprises a third surface and a fourth surface, and the fourth surface surrounds a periphery of the third surface; a plane parallel to the thickness direction of the anti-glare glass and passing through the center points of the two adjacent microstructures is a first plane, a direction in the first plane and perpendicular to the thickness direction of the anti-glare glass is a first direction, and a cross-sectional profile line of the third surface intersected by the first plane is a second cross line; for the two adjacent microstructures with the center points in the first plane, a maximum dimension of one of the microstructures in the first direction is W1, a maximum dimension of the other microstructure in the first direction is W2, and a distance between the two adjacent microstructures in the first direction is M, wherein a dimension of the second cross line of one of the microstructures in the first direction is L2, and a dimension of the second cross line of the other microstructure in the first direction is L3; an area of the first surface is S1, and a sum of projected areas of the third surface on the first surface is S3; wherein the curvature of the second tangent is less than 0.01 μm -1 S3 / S1≤10% when L2 / (W1+M / 2)>5% and L3 / (W2+M / 2)>5%.

7. The anti-glare glass according to claim 6, characterized in that, the two adjacent microstructures are connected by a connecting surface, a sum of projected areas of the connecting surface on the first surface is S2, a cross-sectional profile line of the connecting surface intersected by the first plane is a first cross line, and a dimension of the first cross line in the first direction is L1; wherein the curvature of the first cutline is less than 0.01 pm -1 and 2L1 / (W1+L1+W2) > 5%, (S2+S3) / S1 < 10%.

8. The anti-glare glass according to claim 7, characterized in that, (S2+S3) / S1 ≤ 1%.

9. A display screen, characterized by The display screen has the anti-glare glass according to any one of claims 1-8.

10. An electronic device, comprising: The electronic device has the display screen according to claim 9.

Images