Anti-reflection anti-dazzle glass and display device

Abstract

The embodiment of the invention provides anti-reflection and anti-dazzle glass and a display device. The anti-reflection and anti-dazzle glass comprises a glass substrate and a plating layer, and the plating layer is arranged on the surface of the glass substrate; partial area of the surface, close to the plating layer, of the glass substrate sinks inwards to form pits, 10000-20000 pits are formed in any area of the surface of the glass substrate, the length of the area is 1 mm, and the width of the area is 1 mm; the diameter of each pit is 6 [mu] m-15 [mu] m, and the depth of each pit is 0.15 [mu] m-0. 3 [mu] m; the plating layer comprises high-refractive-index optical layers and low-refractive-index optical layers which are arranged in a stacked mode, and the high-refractive-index optical layers and the low-refractive-index optical layers are alternately arranged. The high-refractive-index optical layer is made of at least one of Nb2O5 and Ti3O5, and the low-refractive-index optical layer is made of Nb2O5. The anti-reflection anti-dazzle glass is good in anti-dazzle effect, low in reflectivity and high in transmittance, the display content of the display device containing the anti-reflection anti-dazzle glass is clear, the influence of ambient light is small, and the brightness loss is low.

Description

TECHNICAL FIELD

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

[0002] Anti-glare glass (Anti-glare glass, referred to as AG glass), it is a kind of glass that the surface of glass is specially treated, usually etching or spraying anti-glare agent is used, so that glass surface has pit or particle, to form anti-glare glass with good diffuse reflection.Anti-glare glass can be used on display screen, touch screen, mobile phone screen and other visual display, to improve the clarity of picture.

[0003] But the anti-glare glass of the present application has the problems of poor anti-glare effect, high reflectivity and low transmittance, which will cause the display to be significantly reflected, and the brightness loss is large. SUMMARY

[0004] The present application can provide a kind of anti-reflection anti-glare glass and display device, the anti-glare glass of the present application has good anti-glare effect, low reflectivity and high transmittance, the display device containing the anti-glare glass of the present application has clear display content, is little influenced by ambient light, and the brightness loss is also low.

[0005] In the first aspect, the present application provides an anti-reflection anti-glare glass, which comprises a glass substrate and a plating layer, the plating layer is arranged on the surface of the glass substrate; the surface of the glass substrate is recessed inward to form a pit in the part area close to the plating layer, and there are 10000-20000 pits in any area on the surface of the glass substrate, the length of the area is 1mm, and the width is 1mm; the diameter of each pit is 6-15 μm, and the depth of each pit is 0.15-0.3 μm; the plating layer comprises a high-refractive optical layer and a low-refractive optical layer arranged in layers, and the high-refractive optical layer and the low-refractive optical layer are arranged alternately; the material of the high-refractive optical layer comprises at least one of Nb2O5 or Ti3O5, and the material of the low-refractive optical layer comprises Nb2O5.

[0006] Based on the anti-reflective anti-dazzle glass of the present application, the inventors find that the glass substrate and the coating layer cooperate with each other to make the anti-reflective anti-dazzle glass have good anti-dazzle effect, low reflectivity, and also high transmittance. When light is irradiated from the glass substrate to the surface of the glass substrate away from the coating layer, the glass substrate and the coating layer have good transmittance for the light, so that the display device containing the anti-reflective anti-dazzle glass of the present application has low brightness loss. When the incident light passes through the coating layer to the surface of the glass substrate, the pits and the flat parts on the surface of the glass substrate form a concave-convex structure similar to a moth eye structure (the flat parts of the glass substrate correspond to the convex structure), and the number of pits in each unit area (i.e. an area with a length of 1 mm and a width of 1 mm) is large, and the diameter and the depth are not fixed, so that the moth eye-like structure of the glass substrate can well achieve the effects of anti-dazzle and reduction of specular reflection; and because the material of the high-refractive optical layer in the coating layer includes at least one of Nb2O5 or Ti3O5, and the material of the low-refractive optical layer includes SiO2, the refractive index of the high-refractive optical layer is greater than the refractive index of the low-refractive optical layer, and when the light passes through the coating layer, the reflected light waves of the layer structure with different refractive indices also interfere with each other, thereby greatly weakening the intensity of the reflected light waves, so that the anti-dazzle and reduction of specular reflection effects of the anti-reflective anti-dazzle glass are further improved, so that the display content of the display device containing the anti-reflective anti-dazzle glass of the present application is clear and less affected by the ambient light.

[0007] In a possible implementation, the distance between adjacent pits is 35 μm to 65 μm.

[0008] In the above technical solution, the anti-reflective anti-dazzle glass increases the anti-dazzle effect without affecting the display effect, and there is basically no problem of flash point.

[0009] In a possible implementation, the area of each pit is 3 x 10 -5 mm 2 to 1.9 x 10 -4 mm 2 .

[0010] In the above technical solution, the anti-dazzle effect is increased without affecting the display effect and without the problem of flash point.

[0011] In a possible implementation, the area of all pits accounts for 80% to 95% of the surface area of the glass substrate.

[0012] In the above technical solution, the pits are more uniform, and the surface feels delicate and not harsh.

[0013] In a possible implementation, the total thickness of the coating layer is 120 nm to 300 nm.

[0014] In the technical solution, when the thickness of the plating layer is in the range of 120nm-300nm, the anti-reflective anti-glare glass has lower reflectivity and better transmittance, and the image display is not easy to be distorted.

[0015] In a possible implementation, the plating layer comprises a first low-refractive optical layer, a first high-refractive optical layer, a second low-refractive optical layer, a second high-refractive optical layer and a third low-refractive optical layer arranged in a stack, and the first low-refractive optical layer is close to the glass substrate; in the layer structure of the plating layer, the thickness of the first low-refractive optical layer is the smallest, and the thickness of the third low-refractive optical layer is the largest; the thickness of the first low-refractive optical layer is 7nm-20nm, and the thickness of the third low-refractive optical layer is 50nm-100nm.

[0016] In the technical solution, the thickness of the first low-refractive optical layer is the smallest, generally 7nm-20nm, which can also increase the adhesion of the subsequent layer structure to the glass substrate; the thickness of the third low-refractive optical layer is the largest, generally 50nm-100nm, which can also protect the other layer structures in the plating layer from being scratched and can improve the service life of the anti-reflective anti-glare glass.

[0017] In a possible implementation, the thickness of the second low-refractive optical layer, the first high-refractive optical layer and the second high-refractive optical layer is independently 20nm-50nm.

[0018] In the technical solution, the anti-reflective anti-glare glass has lower reflectivity, better anti-glare effect and better transmittance; when used in a display device, the image display is not easy to be distorted, and the luminance loss is low.

[0019] In the technical solution, the anti-reflective anti-glare glass has lower reflectivity, better anti-glare effect and better transmittance.

[0020] In a possible implementation, the surface of the glass substrate close to the plating layer satisfies at least one of the following conditions: (1) the average roughness is 0.25-0.45; and (2) the average root roughness is not greater than 100.

[0021] In the technical solution, the glass substrate has better anti-glare effect and worse specular reflection effect, so that the anti-glare effect of the anti-reflective anti-glare glass is further improved, and the reflectivity of the anti-reflective anti-glare glass is reduced.

[0022] In a possible implementation, the anti-reflective anti-glare glass satisfies at least one of the following conditions: (1) the glossiness is 18-38; (2) the transmittance is not less than 93%; and (3) the reflectivity is not greater than 5.5%.

[0023] In a second aspect, the present application provides a display device comprising the anti-reflective anti-glare glass as described above.

[0024] Based on the display device of the present application, the display content is clear, the influence of ambient light is small, and the brightness loss is also low. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A 1000 times magnified image of the surface of the glass substrate in Example 1 of the present application close to the coating layer;

[0026] Figure 2 A partial enlarged view of Figure 1 ;

[0027] Figure 3 A structural schematic diagram of the anti-reflective anti-glare glass in Example 1 of the present application;

[0028] Figure 4 A structural schematic diagram of the anti-reflective anti-glare glass in Example 2 of the present application;

[0029] Figure 5 A comparison diagram of the reflection effect of the anti-glare glass of Comparative Example 1 and the anti-reflective anti-glare glass of Example 1 of the present application, wherein the left side is the anti-glare glass of Comparative Example 1, and the right side is the anti-reflective anti-glare glass of Example 1 of the present application. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below. If the specific conditions are not specified in the embodiments, the conventional conditions or the conditions recommended by the manufacturer are used. If the reagents or instruments used are not specified by the manufacturer, they are all conventional products that can be purchased on the market.

[0031] The anti-glare glass in the prior art has the problems of poor anti-glare effect, high reflectivity, and low transmittance, which will cause the reflection of the display to be obvious, and the brightness loss to be large. Therefore, the present application provides an anti-reflective anti-glare glass, which has good anti-glare effect, low reflectivity, and high transmittance. The display containing the anti-reflective anti-glare glass of the present application has good display effect, small influence of ambient light, and low brightness loss.

[0032] This application provides an anti-reflective and anti-glare glass, which includes a glass substrate and a coating. The coating is disposed on the surface of the glass substrate. A portion of the surface of the glass substrate near the coating is recessed inward to form pits. Within any unit area (i.e., an area 1 mm long and 1 mm wide) on the surface of the glass substrate, there are 10,000 to 20,000 pits. The diameter of each pit is 6 μm to 15 μm, and the depth of each pit is 0.15 μm to 0.3 μm. The coating includes a high-refractive-index optical layer and a low-refractive-index optical layer stacked on top of each other, with the high-refractive-index optical layer and low-refractive-index optical layer alternately disposed. The material of the high-refractive-index optical layer includes at least one of Nb2O5 or Ti3O5, and the material of the low-refractive-index optical layer includes SiO2.

[0033] The inventors discovered that the glass substrate and coating in the anti-reflective and anti-glare glass of this application can cooperate and work synergistically, resulting in excellent anti-glare performance and low reflectivity. Furthermore, the anti-reflective and anti-glare glass of this application also has high transmittance. When used in display devices, it ensures clear display content, minimal impact from ambient light, and low brightness loss. The specific principle is as follows:

[0034] When light shines from the glass substrate onto the surface of the glass substrate away from the coating, both the glass substrate and the coating have good light transmittance, resulting in low brightness loss in the display device containing the anti-reflective and anti-glare glass of this application. When incident light passes through the coating and reaches the surface of the glass substrate, the pits and flat parts on the surface of the glass substrate form a moth-eye-like uneven structure (the flat parts of the glass substrate are equivalent to a raised structure), which can achieve the effects of anti-glare and reduced specular reflection. Moreover, since the refractive indices of Nb2O5 and Ti3O5 are higher than those of SiO2, in this application, the refractive index of the high-refractive optical layer is greater than that of the low-refractive optical layer. When light passes through the coating, the light waves reflected by the layer structures with different refractive indices also interfere with each other, thereby greatly weakening the intensity of the reflected light waves. This can further improve the anti-glare and anti-spectral effect of the anti-reflective and anti-glare glass, so that the display content of the display device containing the anti-reflective and anti-glare glass of this application is clear and less affected by ambient light.

[0035] It should be noted that the calculation standard for the number of pits in this application is as follows: pits with clear outlines are counted as 1, pits with unclear outlines are counted as 0.5, and for pits whose edges are cut by a unit area, pits with clear but incomplete outlines are counted as 0.5. The sum of these numbers is the total number of pits.

[0036] Additionally, it should be noted that the definition standards for the various parameters of the pit are as follows:

[0037] The diameter of a pit refers to the maximum straight line distance between two points on the projection plane of the pit's outline. The distance between adjacent pits is the straight line distance between the center points of two adjacent pits, where the center point is the intersection of the maximum and second-largest straight line distances d1 and d2 on the projection plane of the pit's outline. The depth of a pit is the perpendicular distance from the pit's outline to its lowest point. The area of ​​a pit is the orthographic projection area of ​​its outline, which can be calculated using the same method as the area of ​​a circle: S = πr². 2 Specifically, the pit profile includes d1 (also known as the major axis) and d3, where r = (d1 + d3) / 2. The shortest path length passing through the midpoint of the major axis is taken as the center of the circle. Furthermore, it should be noted that the center point of the pit is determined by software identification of the intersection of the maximum and second-largest straight lines between two points on the projection plane, with an error range of ±1 μm.

[0038] In some embodiments of this application, in order to enhance the anti-glare effect of the anti-reflective and anti-glare glass without affecting its display effect and to essentially eliminate the problem of flickering, the distance between adjacent pits on the glass substrate is 35μm to 65μm; the average area of ​​each pit is 3×10. -5 mm 2 ~1.9 x 10 -4 mm 2 In addition, in some embodiments of this application, the area of ​​all the pits accounts for 80% to 95% of the surface area of ​​the glass substrate, which makes the pits more uniform and the surface smooth and non-gritty.

[0039] In addition, the inventors unexpectedly discovered that when the surface pits of the glass substrate meet the above conditions, the surface of the glass substrate near the coating of this application will meet at least one of the following conditions: (1) the average roughness is 0.25 to 0.45; (2) the average root roughness is not greater than 100.

[0040] It should be noted that average roughness (R) a R is a commonly used index to characterize surface roughness, used to describe the average degree of surface undulation. a It is obtained by calculating the average surface height, that is, summing the absolute values ​​of each data point of the surface height and then dividing by the measurement length. Root Mean Square Roughness (R sm R is also an index characterizing surface roughness, used to describe the degree of surface undulation. sm It is obtained by calculating the root mean square value of the surface height, which is the sum of the squares of the differences between each data point of the surface height and the average value, and then taking the square root. R a Or R smThe larger the value, the rougher the surface; R a Or R sm The smaller the value, the smoother the surface. R a and R sm In the engineering field, it is often used to evaluate the surface quality of materials and the effectiveness of processing techniques.

[0041] In some embodiments of this application, in order to ensure that the anti-reflective and anti-glare glass has good transmittance while also having low reflectivity and that the image display is not easily distorted, the thickness of the coating is typically 120μm to 300μm.

[0042] Specifically, in some embodiments of this application, the coating includes a first low-refractive optical layer, a first high-refractive optical layer, a second low-refractive optical layer, a second high-refractive optical layer, and a third low-refractive optical layer stacked together, with the first low-refractive optical layer close to the glass substrate. In the layer structure of the coating, the first low-refractive optical layer has the smallest thickness, typically 7nm to 20nm; the third low-refractive optical layer has the largest thickness, typically 50nm to 100nm. Thus, the first low-refractive optical layer can also increase the adhesion between the subsequent layer structures and the glass substrate, while the third low-refractive optical layer can also provide protection, preventing the other layer structures in the coating from being scratched, thereby improving the service life of the anti-reflective and anti-glare glass. More specifically, the thicknesses of the second low-refractive optical layer, the first high-refractive optical layer, and the second high-refractive optical layer are each independently 20nm to 50nm.

[0043] The inventors have discovered that when anti-reflective anti-glare glass meets the above conditions, it typically has at least one of the following characteristics: (1) gloss level of 18 to 38; (2) transmittance of not less than 93%; and (3) reflectance of not more than 5.5%. Therefore, the anti-reflective anti-glare glass of this application has good anti-glare effect, low reflectance, and high transmittance.

[0044] The method for preparing the anti-reflective and anti-glare glass of this application is generally as follows:

[0045] S100. The glass sheet is frosted to form a frosted glass.

[0046] In this step, the glass blank is typically immersed in hydrofluoric acid for 10-20 minutes, followed by immersion in a frosting solution for 1-5 minutes. This creates an uneven microstructure on the surface of the glass blank, causing diffuse reflection of light from the optical fiber shining on it, thus achieving an anti-glare effect. The specific operation process for this step is as follows:

[0047] Soak the white glass sheet in clean water for 1 to 3 minutes, then soak it in hydrofluoric acid for 10 to 20 minutes, followed by soaking in clean water for 3 to 5 minutes to remove the hydrofluoric acid. Rinse the surface for 20 to 50 seconds, and then soak it in frosting solution for 1 to 5 minutes. In addition, to facilitate the next step, the frosted glass is usually soaked in clean water for 1 to 3 minutes.

[0048] S200: Polish the frosted glass to form a glass substrate.

[0049] This step mainly involves immersing the frosted glass in hydrofluoric acid for 30 to 60 minutes. This cleans away the crystals and frosting reaction products on the glass surface, making the glass clearer and brighter. The immersion in hydrofluoric acid for 30 to 60 minutes can be done all at once or in batches, with each immersion typically lasting 10 to 20 minutes.

[0050] Specifically, the soaking process in batches is as follows:

[0051] 1. Soak in dilute sulfuric acid or dilute hydrochloric acid for 10-20 minutes; 2. Soak in clean water for 10-15 minutes; 3. Soak in hydrofluoric acid for 10-20 minutes; 4. Soak in clean water for 10-15 minutes; 5. Soak in hydrofluoric acid for 10-20 minutes; 6. Soak in clean water for 10-15 minutes; 7. Soak in hydrofluoric acid for 10-20 minutes; 8. Soak in clean water for 10-15 minutes.

[0052] The process of soaking once is as follows:

[0053] 1. Soak in dilute sulfuric acid or dilute hydrochloric acid for 10-20 minutes; 2. Soak in clean water for 10-15 minutes; 3. Soak in hydrofluoric acid for 30-60 minutes; 4. Soak in clean water for 10-15 minutes.

[0054] Similarly, in order to better carry out the next step, the glass substrate is usually soaked in clean water for 1 to 3 minutes after the polishing process is completed.

[0055] S300: A coating is deposited on the surface of a glass substrate with pits using a sputtering deposition method.

[0056] This step uses sputtering deposition to prepare the coating, which protects the uneven structure of the glass substrate surface from damage. Since the sputtering deposition process for preparing the layer structure is relatively mature, it will not be described in detail here.

[0057] During the entire preparation process, there will also be operations such as tempering, edge grinding, and cutting. Since these operations are not the focus of this application, they will not be described in detail here. The entire completed process is as follows:

[0058] Coating - Sanding - Liquid polishing - Cleaning - Cutting - Edge grinding - Chamfering - Cleaning - Tempering - Printing - Magnetron sputtering coating - Spraying AF (Anti-fingerprint) anti-fingerprint oil.

[0059] The anti-reflective and anti-glare glass of this application can be used in display devices, resulting in clear display content, minimal impact from ambient light, and low brightness loss. Specifically, display devices include, but are not limited to, displays, touchscreens, mobile phone screens, calculator screens, computer screens, and automotive or electric vehicle screens.

[0060] Example

[0061] The embodiments and comparative examples provided below illustrate the implementation of this application in more detail. Various tests and evaluations were conducted according to the methods described below. Furthermore, unless otherwise specified, "parts" and "%" are quality standards.

[0062] Test method and apparatus :

[0063] Dent parameter measurement:

[0064] Using a 1000x magnifying glass (Keyence VHX-X1 series from Japan), observe any unit area of ​​the glass substrate, count the number of pits in the unit area, and simultaneously measure the diameter of the pits, the distance between adjacent pits, the depth of the pits, the area of ​​the pits, and the area of ​​all pits relative to the surface area of ​​the glass substrate. Figure 1 This is a magnified image of the surface of the glass substrate near the coating in Embodiment 1 of this application, magnified 1000 times.

[0065] Ra and Rsm tests:

[0066] Five different points are selected on the surface of the glass substrate near the coating. Four of these points are located at the four corners of the glass substrate, 20 cm from the edge, and the other point is located at the center of the glass substrate. Then, the Ra and Rsm values ​​of the five points are measured using an SJ-210 needle roughness tester. The average Ra and Rsm values ​​of the five points are then calculated. These average values ​​are the average roughness and average root square roughness of the surface of the glass substrate near the coating.

[0067] Anti-glare effect test:

[0068] Select a D65 light source as the incident light source, illuminate the surface of the anti-glare layer of the anti-glare glass with the incident light source, and then use a glare tester to measure the anti-glare value of the anti-glare glass. The higher the anti-glare value, the worse the anti-glare effect.

[0069] Transmittance test:

[0070] Five different points are selected on the product to be tested. Four of the points are located at the four corners of the glass substrate to be tested, 20 cm from the edge, and the other point is located at the center of the glass substrate to be tested. The transmittance of the five points is then tested using a WGT-S transmittance meter (light source wavelength 370 nm to 700 nm). The average transmittance of the five points is then calculated, and this average value is the transmittance of the product to be tested.

[0071] Gloss test:

[0072] Five different points are selected on the product to be tested. Four of the points are located at the four corners of the glass substrate to be tested, 20 cm from the edge, and the other point is located at the center of the glass substrate to be tested. Then, the gloss of the five points is tested using an WGG60-E4 gloss meter. The average gloss of the five points is then calculated, and this average value is the gloss of the product to be tested.

[0073] Reflectivity test:

[0074] Place a black light-absorbing velvet cloth on the inner surface of the product to be tested (i.e., the surface of the glass substrate away from the coating). Then select five different points on the product to be tested, four of which are located at the four corners of the glass substrate 20cm from the edge, and the other point is located at the center of the glass substrate. Then use a CM-26D spectrophotometer to test the reflectance of the five points, and then calculate the average reflectance of the five points. This average value is the reflectance of the product to be tested.

[0075] Example 1

[0076] This embodiment provides an anti-reflective and anti-glare glass, which includes a glass substrate on which a coating layer of 120nm to 300nm is disposed. The coating layer, in a stacking order, includes the following layer structure:

[0077] The first low-refractive optical layer is made of SiO2 and has a thickness of 7nm to 20nm. This layer is close to the glass substrate.

[0078] The first high-refractive optical layer is made of Nb2O5 and has a thickness of 20nm to 50nm.

[0079] The second low-refractive optical layer is made of SiO2 and has a thickness of 20nm to 50nm.

[0080] The second high-refractive-index optical layer is made of Nb2O5 and has a thickness of 20nm to 50nm.

[0081] The third low-refractive optical layer is made of SiO2 and has a thickness of 50nm to 100nm.

[0082] Pits are formed on the surface of the glass substrate near the coating, with 10,000 pits per unit area. The average diameter of the pits is 6.1 μm, the average depth of the pits is 0.145 μm, the distance between adjacent pits is 35 μm, and the average area of ​​each pit is 3.02 × 10⁻¹⁰. -5 mm 2 The area of ​​all the pits accounts for 80.5% of the surface area of ​​the glass substrate. A schematic diagram of the anti-reflective and anti-glare glass in this embodiment is shown below. Figure 3 As shown.

[0083] In this embodiment, the glass substrate is prepared by frosting for 1 to 3 minutes and liquid polishing for 40 to 60 minutes.

[0084] Example 2

[0085] This embodiment provides an anti-reflective and anti-glare glass, which differs from Embodiment 1 mainly in that the first high-refractive optical layer is made of Ti3O5. Furthermore, pits are formed on the surface of the glass substrate near the coating layer, with 10,000 pits per unit area. The average diameter of the pits is 6.2 μm, the average depth is 0.151 μm, the distance between adjacent pits is 34.6 μm, and the average area of ​​each pit is 3.07 x 10. -5 mm 2 The area of ​​all the pits accounts for 80.2% of the surface area of ​​the glass substrate. A schematic diagram of the anti-reflective and anti-glare glass in this embodiment is shown below. Figure 4 As shown.

[0086] In this embodiment, the glass substrate is prepared by frosting for 1 to 3 minutes and liquid polishing for 40 to 60 minutes.

[0087] Example 3

[0088] This embodiment provides an anti-reflective and anti-glare glass, which differs from Embodiment 1 mainly in that: pits are formed on the surface of the glass substrate near the coating, with 20,000 pits per unit area, an average pit diameter of 15.3 μm, an average pit depth of 0.312 μm, a distance of 65.3 μm between adjacent pits, and an average area of ​​1.9 x 10. -4 mm 2 The area of ​​all the pits accounts for 95.2% of the surface area of ​​the glass substrate.

[0089] In this embodiment, the glass substrate is prepared by frosting for 3 to 5 minutes and liquid polishing for 30 to 40 minutes.

[0090] Comparative Example 1

[0091] This comparative example provides an anti-glare glass, which, compared to Example 1, mainly differs in that it does not contain a coating.

[0092] Comparative Example 2

[0093] This comparative example provides a glass that, compared to Example 1, is mainly different in that the glass substrate does not contain pits (i.e., a glass blank is used as a substitute for the glass substrate).

[0094] Comparative Example 3

[0095] This comparative example provides an anti-glare glass, which differs from Example 1 mainly in that: the number of pits per unit area is 8000, the average diameter of the pits is 6.1 μm, the average depth of the pits is 0.165 μm, the distance between adjacent pits is 55 μm, and the average area of ​​each pit is 3.02 x 10. -5 mm 2 The area of ​​all the pits accounts for 64% of the surface area of ​​the glass substrate.

[0096] In this comparative example, the glass substrate was prepared by frosting for 1 minute and liquid polishing for 40 to 60 minutes.

[0097] Comparative Example 4

[0098] This comparative example provides an anti-glare glass, which differs from Example 4 mainly in that: the number of pits per unit area is 21,000, the average diameter of the pits is 14.6 μm, the average depth of the pits is 0.331 μm, the distance between adjacent pits is 22 μm, and the average area of ​​each pit is 1.3 x 10. -4 mm 2 The area of ​​all the pits accounts for 99.8% of the surface area of ​​the glass substrate.

[0099] In this comparative example, the glass substrate was prepared by frosting for 6 minutes and liquid polishing for 30 to 40 minutes.

[0100] The main differences between the various embodiments and comparative examples are shown in Table 1, and the test results of the anti-glare glass in the embodiments and comparative examples are shown in Table 2.

[0101] Table 1

[0102] Group Frosted treatment Polished treatment Example 1 1 min ~ 3 min 40 min ~ 60 min Example 2 1 min ~ 3 min 40 min ~ 60 min Example 3 3 min ~ 5 min 30 min ~ 40 min Comparative Example 1 1 min ~ 3 min 40 min ~ 60 min Comparative Example 2 0 0 Comparative Example 3 1 min 40 min ~ 60 min Comparative Example 4 6 min 30 min ~ 40 min

[0103] Table 2

[0104]

[0105]

[0106] As shown in the table, the anti-glare glass of this application has good anti-glare effect, low reflectivity, and high transmittance. The display content of the display device containing the anti-glare glass of this application is clear, less affected by ambient light, and has low brightness loss. By visual inspection, it can be found that the anti-glare glass in Examples 1 to 3 has a good appearance effect, which has both low reflection effect and anti-glare effect; while Comparative Example 1 does not have a low reflection effect, Comparative Example 2 does not have an anti-glare effect, and the low reflection effect and anti-glare effect of Comparative Examples 3 and 4 are both unqualified.

[0107] In addition, this application also provides a comparison diagram of the reflection effects of the anti-glare glass of Comparative Example 1 and the anti-reflective anti-glare glass of Example 1, such as... Figure 5 As shown; the left image is a reflection effect diagram of the anti-glare glass in Example 1, and the right image is a reflection effect diagram of the anti-glare glass in Example 1. Figure 5 It can be seen that the anti-reflective and anti-glare glass of Example 1 is darker in color, which indicates that the anti-reflective and anti-glare glass of Example 1 has a lower reflectivity. When used in a display device, the displayed content is clearer and less affected by ambient light.

[0108] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An anti-reflective and anti-glare glass, characterized in that, It includes a glass substrate and a coating, wherein the coating is disposed on the surface of the glass substrate; The glass substrate has a recessed area near the coating to form pits. Any area on the surface of the glass substrate contains 10,000 to 20,000 pits. The length and width of the area are 1 mm. The diameter of each pit is 6 μm to 15 μm and the depth of each pit is 0.15 μm to 0.3 μm. The coating includes a high-refractive-index optical layer and a low-refractive-index optical layer stacked together, and the high-refractive-index optical layer and the low-refractive-index optical layer are alternately arranged; the material of the high-refractive-index optical layer includes at least one of Nb2O5 or Ti3O5, and the material of the low-refractive-index optical layer includes SiO2.

2. The anti-reflective and anti-glare glass according to claim 1, characterized in that, The distance between adjacent pits is 35μm to 65μm.

3. The anti-reflective and anti-glare glass according to claim 1, characterized in that, The average area of ​​each of the aforementioned pits is 3 x 10. -5 mm 2 ~1.9 x 10 -4 mm 2 .

4. The anti-reflective and anti-glare glass according to claim 1, characterized in that, The area of ​​all the aforementioned pits accounts for 80% to 95% of the surface area of ​​the glass substrate.

5. The anti-reflective and anti-glare glass according to claim 1, characterized in that, The thickness of the coating is 120nm to 300nm.

6. The anti-reflective and anti-glare glass according to any one of claims 1 to 5, characterized in that, The coating includes a first low-refractive optical layer, a first high-refractive optical layer, a second low-refractive optical layer, a second high-refractive optical layer, and a third low-refractive optical layer stacked together, with the first low-refractive optical layer close to the glass substrate; in the layer structure of the coating, the first low-refractive optical layer has the smallest thickness, and the third low-refractive optical layer has the largest thickness; the thickness of the first low-refractive optical layer is 7nm to 20nm, and the thickness of the third low-refractive optical layer is 50nm to 100nm.

7. The anti-reflective and anti-glare glass according to claim 6, characterized in that, The thicknesses of the second low-refractive optical layer, the first high-refractive optical layer, and the second high-refractive optical layer are each independently 20 nm to 50 nm.

8. The anti-reflective and anti-glare glass according to any one of claims 1 to 5, characterized in that, The surface of the glass substrate near the coating satisfies at least one of the following conditions: (1) The average roughness is 0.25 to 0.

45. (2) The average root roughness is not greater than 100.

9. The anti-reflective and anti-glare glass according to claim 1, characterized in that, The anti-reflective and anti-glare glass meets at least one of the following conditions: (1) Gloss level is 18-38; (2) The transmittance is not less than 93%; (3) The reflectivity is not greater than 5.5%.

10. A display device, characterized in that, It includes the anti-reflective and anti-glare glass as described in any one of claims 1 to 9.

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