Anti-dazzle glass, preparation method thereof, anti-dazzle agent and display device

Abstract

The embodiment of the invention provides anti-dazzle glass, a preparation method of the anti-dazzle glass, an anti-dazzle agent and a display device. The anti-dazzle glass comprises a glass substrate, anti-dazzle particles are arranged on one surface of the glass substrate, an anti-dazzle layer is formed by the anti-dazzle particles, 100-200 anti-dazzle particles are contained in any area of the anti-dazzle layer, the length of each area is 1 mm, the width of each area is 1 mm, the diameter of each anti-dazzle particle is 5-15 microns, and the distance between every two adjacent anti-dazzle particles is 60-150 microns. The anti-dazzle glass is better in anti-dazzle effect, the surface of the anti-dazzle glass is fine and smooth, the hand feeling of a screen does not need to be improved through polishing, and the existing screen requirements can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of glass processing, in particular, relates to an anti-glare glass and a preparation method thereof, an anti-glare agent and a display device. BACKGROUND

[0002] Anti-glare glass (AG glass for short) is a kind of glass with a special surface treatment, which is widely used in visual display such as display screen, touch screen and mobile phone screen. The surface of AG glass is usually provided with pits or particles to make the AG glass have good diffuse reflection, so as to reduce the interference of ambient light and improve the clarity of the picture. With the wide application of screens, AG glass not only needs to have better anti-glare effect, but also needs to have good hand feeling. However, the anti-glare effect and hand feeling of the existing AG glass have been increasingly unable to meet the current screen requirements. SUMMARY

[0003] The present application can provide an anti-glare glass and a preparation method thereof, an anti-glare agent and a display device. The anti-glare glass of the present application has better anti-glare effect, and its surface is also relatively delicate, so that the hand feeling of the screen can be improved without polishing, which can meet the current screen requirements.

[0004] In a first aspect, the present application provides an anti-glare glass, which comprises a glass substrate, one surface of the glass substrate is provided with anti-glare particles, the anti-glare particles form an anti-glare layer, the anti-glare layer contains 100-200 anti-glare particles in any unit area, the length of the unit area is 1 mm, the width is 1 mm, the diameter of the anti-glare particles is 5-15 μm, and the distance between adjacent anti-glare particles is 60-150 μm.

[0005] Based on the anti-glare glass of the present application, the inventors found that when the anti-glare layer on the glass substrate contains 100-200 anti-glare particles with a diameter of 5-15 μm per unit area, and the distance between adjacent anti-glare particles is 60-150 μm, the light irradiated on the surface of the anti-glare layer will be more dispersed under the action of the anti-glare particles, which is more conducive to improving the anti-glare effect of the anti-glare glass.

[0006] In a possible implementation, the sphericity of the anti-glare particles is not less than 0.8.

[0007] In the above technical solution, when the sphericity of the anti-glare particles is not less than 0.8, the anti-glare particles can better disperse the light irradiated on the surface of the anti-glare layer, further improving the anti-glare effect of the anti-glare glass. At the same time, the hand feeling of such anti-glare glass is relatively smooth, which not only improves the hand feeling of the anti-glare glass, but also can be used in display devices without further polishing.

[0008] In one possible implementation, the projected area of ​​all anti-glare particles within any given unit area accounts for 4% to 6% of the total area of ​​the unit area.

[0009] In the above technical solution, the projected area of ​​all anti-glare particles in the unit area accounts for 4% to 6% of the total area of ​​the unit area, which is conducive to further increasing the anti-glare effect of the anti-glare glass.

[0010] In one possible implementation, the distance between adjacent anti-glare particles is 90μm to 120μm.

[0011] The above technical solution is conducive to further improving the anti-glare effect of anti-glare glass.

[0012] In one possible implementation, the average roughness of the anti-glare layer is 0.1 μm to 0.3 μm.

[0013] Among the above technical solutions, the anti-glare glass will have a better feel.

[0014] In one possible implementation, it satisfies at least one of the following conditions: (1) the reflectivity of the anti-glare glass is 50 to 70; (2) the gloss of the anti-glare glass is 55 to 75; (3) the haze of the anti-glare glass is 3 to 9.

[0015] Among the above technical solutions, anti-glare glass can meet current screen requirements.

[0016] Secondly, this application provides an anti-glare agent for preparing the anti-glare layer in the above-mentioned anti-glare glass, the components of which, by mass fraction, include 6% to 15% silica sol, 20% to 40% ethanol, 30% to 50% hexafluoropropylene trimer diluent, 0.1% to 0.5% hydrochloric acid, 2% to 5% fluoride, and 2% to 5% water.

[0017] Based on the anti-glare agent of this application, an anti-glare layer in the anti-glare glass of this application can be prepared. Moreover, compared with the prior art, because the concentration of hexafluoropropylene trimer diluent in the anti-glare agent of this application is higher and the ethanol content is lower, the evaporation rate of the anti-glare agent during spraying is slower, and the formation and setting of anti-glare particles is also slower. The anti-glare particles formed in this way not only have a smoother feel, but also are less likely to form surface dust. This means that the resulting anti-glare glass does not need to be polished to improve the feel or remove surface dust. Among them, silica sol, as a base solute, can ensure that the anti-glare layer formed after the anti-glare agent is sprayed is more uniformly coated; hydrochloric acid and fluoride can play a catalytic and curing role, and water can play a leveling role, which can reduce the agglomeration rate of solutes and facilitate the formation of the anti-glare layer in the anti-glare glass of this application.

[0018] Thirdly, this application provides a method for preparing the above-mentioned anti-glare glass, which includes the following steps: spraying an anti-glare agent onto one surface of a glass substrate using a spraying machine, and then baking it until the anti-glare agent forms anti-glare particles. The following conditions are met during spraying: (1) pressure is 5 MPa to 10 MPa; (2) flow rate is 150 g / min to 200 g / min; (3) conveyor belt speed is 500 mm / min to 800 mm / min.

[0019] In the above technical solution, the pressure, flow rate and conveyor belt speed are kept within the above range during spraying, which can produce the anti-glare glass of this application.

[0020] In one possible implementation, the baking temperature is 200℃~250℃ and the baking time is 30min~50min.

[0021] In the above technical solution, when the baking conditions meet the above requirements, the anti-glare glass produced has a better anti-glare effect and a smoother feel.

[0022] Fourthly, this application provides a display device that includes the aforementioned anti-glare glass.

[0023] The display device based on this application has high clarity and good anti-glare effect because it contains the aforementioned anti-glare glass. Attached Figure Description

[0024] Figure 1 This is a magnified image of the anti-glare layer of the anti-glare glass in Embodiment 1 of this application, magnified 1000 times. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0026] In existing technologies, although anti-glare layers are applied to the surface of glass to achieve an anti-glare effect, their effectiveness is relatively limited and cannot adequately meet current demands for glass anti-glare. Therefore, this application provides an anti-glare glass with superior anti-glare performance that meets current requirements. The anti-glare glass and anti-glare agent of this application are described in detail below.

[0027] This application provides an anti-glare glass, which includes a glass substrate. Anti-glare particles are disposed on one surface of the glass substrate. The anti-glare particles constitute an anti-glare layer. Each unit area of ​​the anti-glare layer contains 100 to 200 anti-glare particles. The unit area has a length of 1 mm, a width of 1 mm, a diameter of 5 μm to 15 μm, and a distance of 60 μm to 150 μm between adjacent anti-glare particles.

[0028] In the anti-glare glass of this application, the anti-glare particles on the glass substrate can disperse the irradiated light. Moreover, the inventors have discovered that when the anti-glare layer on the glass substrate contains 100 to 200 anti-glare particles with a diameter of 5 μm to 15 μm per unit area, and the distance between adjacent anti-glare particles is 60 μm to 150 μm, the light irradiated onto the surface of the anti-glare layer will be more dispersed under the action of the anti-glare particles, which is more conducive to improving the anti-glare effect of the anti-glare glass and can well meet the current screen requirements. Specifically, the anti-glare glass of this application can meet at least one of the following requirements: (1) the sharpness of the anti-glare glass is 50 to 70; (2) the gloss of the anti-glare glass is 55 to 75; (3) the haze of the anti-glare glass is 3 to 9. Among them, sharpness refers to the clarity of the image reflected by the coating surface, usually expressed by the DOI value (distinctness of image), which is used to characterize the decorative related properties of the object surface such as gloss, smoothness, fullness, etc.; the higher the sharpness value, the clearer the image and the better the decorative performance. Gloss, as a surface characteristic of an object, is a physical quantity that evaluates the ability of a material's surface to reflect light; the higher the gloss, the smoother and finer the object's surface. Haze refers to the percentage of transmitted light intensity that deviates from the incident light angle by more than 2.5° out of the total transmitted light intensity; the greater the haze, the higher the degree of blurriness of the material, and the greater the decrease in image clarity.

[0029] It should be noted that the phrase "containing 100 to 200 anti-glare particles per unit area" in this application refers to the number of projections of the anti-glare particles. That is, in any unit area of ​​the anti-glare layer (1mm long and 1mm wide), the number of projections of the anti-glare particles in the anti-glare layer is 100 to 200. For projection points that are not fully displayed in the unit area, if the portion of the selected unit area is less than 50% of the total projection points, it is not counted in the total; if it is equal to or greater than 50%, it is counted as one. Furthermore, it should be noted that the "diameter of the anti-glare particles" in this application refers to the equivalent particle size. The equivalent particle size is the diameter of a spherical particle when a certain physical characteristic of a particle is the same as or similar to that of an equal amount of spherical particles. Additionally, it should be noted that the "distance between adjacent anti-glare particles" refers to the distance between the projections of adjacent anti-glare particles on the anti-glare layer; this distance is the distance between the centers of the two projections. In some embodiments of this application, to further enhance the anti-glare effect of the anti-glare glass, the distance between adjacent anti-glare particles can be 90μm to 120μm. Furthermore, in other embodiments, transparent resin can be used instead of the glass substrate, achieving the same anti-glare effect.

[0030] In some embodiments of this application, the sphericity of the anti-glare particles is not less than 0.8. In this case, the anti-glare particles are generally spherical, near-spherical, or ellipsoidal. This allows the anti-glare layer on the surface of the anti-glare glass to better disperse the light irradiating the surface, further enhancing the anti-glare effect. Simultaneously, this type of anti-glare glass has a smoother feel, improving not only its tactile experience but also allowing it to be used in display devices without further polishing.

[0031] It should be noted that "sphericity" is a parameter characterizing particle morphology; the closer a particle's morphology is to a sphere, the closer its sphericity is to 1. The formula for calculating sphericity is: Where Vp is the particle volume and Sp is the particle surface area.

[0032] Furthermore, in some embodiments of this application, within any given unit area, the projected area of ​​all anti-glare particles accounts for 4% to 6% of the total area of ​​the unit area. This is beneficial for further enhancing the anti-glare effect of the anti-glare glass.

[0033] In some embodiments of this application, the average roughness of the anti-glare layer is 0.1 μm to 0.3 μm, which helps to further improve the feel of the anti-glare glass and also enhances its anti-glare effect. Average roughness (Ra) is a commonly used index to characterize surface roughness, describing the average degree of surface undulation. Ra is obtained by calculating the average value of the surface height, which is achieved by summing the absolute values ​​of each data point of the surface height and then dividing by the measurement length.

[0034] This application also provides an anti-glare agent that can be used to prepare the anti-glare layer in the anti-glare glass of this application. Its components, by mass fraction, include 6%–15% silica sol, 20%–40% ethanol, 30%–50% hexafluoropropylene trimer diluent, 0.1%–0.5% hydrochloric acid, 2%–5% fluoride, and 2%–5% water. When using the anti-glare agent of this application to prepare anti-glare glass, it is usually applied by spraying. After spraying, the liquid components of the anti-glare agent evaporate rapidly, while the solid components remain and form anti-glare particles, thereby forming the anti-glare layer in the anti-glare glass.

[0035] When preparing anti-glare glass using the anti-glare agent of this application, a spraying method is typically employed. After spraying, the liquid components of the anti-glare agent evaporate rapidly, while the solid components remain and form anti-glare particles, thus forming the anti-glare layer in the anti-glare glass. Compared to other anti-glare agents in the prior art, the anti-glare agent of this application has a higher concentration of hexafluoropropylene trimer diluent and a lower ethanol content. Therefore, the anti-glare agent evaporates more slowly during spraying, and the formation and setting of the anti-glare particles are also slower. The resulting anti-glare particles not only have a smoother feel but also do not easily form surface dust. This eliminates the need for subsequent polishing to improve the feel and remove surface dust from the prepared anti-glare glass.

[0036] Furthermore, in the anti-glare agent of this application, silica sol serves as the base solute, ensuring a relatively uniform anti-glare layer coating after spraying. Hydrochloric acid and fluorides act as catalysts and aging agents, while water acts as a leveling agent, reducing the solute aggregation rate and facilitating the formation of the anti-glare layer in the anti-glare glass of this application. As an example, in some embodiments of this application, the mass concentration of the hexafluoropropylene trimer diluent is generally 10% to 20%, and the solvent is typically a Class III solvent, such as ethanol, ethyl acetate, or acetone; the mass concentration of hydrochloric acid is generally 5% to 8%, and the fluoride can be at least one of sodium fluoride or ammonium bifluoride; additionally, the solid content of the anti-glare agent of this application is 12% to 25%.

[0037] Furthermore, the manufacturing process of the anti-glare agent in this application generally includes the following steps:

[0038] 1. Mix ethanol, silica sol, hexafluoropropylene trimer diluent, and fluoride according to the proportions specified in the anti-glare agent and stir until homogeneous.

[0039] 2. Then heat and maintain the temperature at 60℃, while adding 0.1% hydrochloric acid and stirring, and at the same time slowly injecting 2% to 5% deionized water.

[0040] 3. After stirring for 3 to 5 hours, test the pH value. When the pH value is 2 to 5, stop adding hydrochloric acid and stop heating. Continue stirring until the temperature drops to 35℃ to 45℃, and continue stirring for 10 to 20 minutes.

[0041] 4. Let it stand and mature for 6-10 hours until the temperature drops to room temperature (25℃~30℃).

[0042] 5. Filter the above mixed solution using meltblown fabric to obtain the anti-glare agent.

[0043] If not used temporarily, the anti-glare agent should be bottled, sealed, and stored in an environment below 8°C.

[0044] In this application, the steps for preparing anti-glare glass using the anti-glare agent of this application are as follows:

[0045] S100. Apply an anti-glare agent to one surface of a glass substrate using a spraying machine.

[0046] In this step, the spraying machine operates at a pressure of 5 MPa to 10 MPa, a flow rate of 150 g / min to 200 g / min, and a conveyor belt speed of 500 mm / min to 800 mm / min. Compared to existing technologies, the pressure, flow rate, and conveyor belt speed in this application are higher because the anti-glare agent in this application is less volatile. Improving the preparation parameters at each stage not only ensures the production of anti-glare glass with superior anti-glare performance but also increases production efficiency.

[0047] In addition, the glass substrate in this step is usually prepared from a glass sheet. The glass sheet is generally prepared by going through steps such as cutting, edge grinding, cleaning, tempering and cleaning in sequence to form a glass substrate to be sprayed. The specific process of preparing the glass substrate from the glass sheet will not be described in detail here.

[0048] S200, bake until the anti-glare agent on the glass substrate forms anti-glare particles.

[0049] In this step, the baking temperature is typically 200℃~250℃, and the baking time is typically 30min~50min. This allows the anti-glare agent to solidify smoothly and form anti-glare particles.

[0050] The anti-glare glass in this application can be used in display devices, including but not limited to computer screens, mobile phone screens, and car or electric vehicle screens.

[0051] Example

[0052] 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.

[0053] Test method and apparatus

[0054] Anti-glare particle parameter measurement:

[0055] Using a 1000x magnifying glass (Keyence VHX-X1 series, Japan), observe any unit area (1mm in length and width) of the anti-glare layer of the anti-glare glass under test, and count the number of anti-glare particles in the unit area (the statistical criteria are described above in this application). Figure 1 This is a magnified image of the anti-glare layer of the anti-glare glass in Example 1, magnified 1000 times. Then, by manually counting, the projections of the anti-glare particles in a unit area are marked, the distance between adjacent anti-glare particles is measured and calculated, and the percentage of the sum of the projected areas of all anti-glare particles in the unit area to the total area of ​​that unit area is calculated.

[0056] When measuring the distance between adjacent anti-glare particles, the center point of their projected shape is marked. The center point is identified by software as the intersection of the maximum and second-largest values ​​of the straight line between the two points on the projection plane, with an error range of ±1μm. Moreover, since the distance between adjacent anti-glare particles is roughly the same, there may still be slight differences. Therefore, the "distance between adjacent anti-glare particles" in Table 2 is an average value.

[0057] Ra test:

[0058] Five different points are selected on the anti-glare layer of the anti-glare glass to be tested. The Ra value of the five points is measured by a white light interferometer. Then the average Ra value of the five points is calculated. This average value is the average roughness of the anti-glare layer in the anti-glare glass.

[0059] Anti-glare effect test:

[0060] Select a standard C light source (C light source is a light source close to sunlight with a color temperature of 6774K) 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.

[0061] Gloss test:

[0062] Select a standard C light source as the incident light source and illuminate the anti-glare layer surface of the anti-glare glass. Then, use a gloss meter to measure the gloss value of the anti-glare glass. The higher the gloss, the more obvious the reflective effect of the glass surface. Under ambient light, the image controlled by the user will be less clear.

[0063] Haze test:

[0064] The experimental apparatus mainly consists of a standard C light source, a condenser lens, a sample holder, an integrating sphere, a standard white board, a trap, a photocell, and a galvanometer. Samples can be 50mm × 50mm thick plates, sheets, or films.

[0065] When a beam of light shines on an object, some of the light is reflected by the surface, some is absorbed by the object's interior, and some passes through the object. The proportion of these three parts depends on the characteristics of the object's surface and internal composition. For transparent glass specimens, most of the incident light passes through, but the transmitted light is divided into direct and scattered parts. The ratio of these two parts is related to the internal composition of the specimen material. The greater the proportion of direct light, the better the transparency of the material; the greater the proportion of scattered light, the more obvious the turbidity of the material, i.e., the greater the haze.

[0066] Example 1

[0067] <Ingredients of anti-glare agents>

[0068] By mass fraction, it comprises 10% silica sol, 50% hexafluoropropylene trimer diluent, 0.1% hydrochloric acid, 5% fluoride, 5% water, and the remainder is ethanol. The silica sol is a small-particle silica sol with a particle size less than 8 nm; the hexafluoropropylene trimer diluent has a mass concentration of 5%, the hydrochloric acid has a mass concentration of 10%, and the fluoride is a 1:1 mass ratio of sodium fluoride and ammonium hydrogen fluoride.

[0069] <Preparation of Anti-glare Glass>

[0070] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 500 mm / min.

[0071] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0072] Example 2

[0073] Except for the <anti-glare agent ingredients> being set as follows, the rest is basically the same as in Example 1:

[0074] By mass fraction, it comprises 15% silica sol, 35% hexafluoropropylene trimer diluent, 0.1% hydrochloric acid, 5% fluoride, 5% water, and the remainder is ethanol. The silica sol is a small-particle silica sol with a particle size less than 8 nm, the hexafluoropropylene trimer diluent has a mass concentration of 10%, the hydrochloric acid has a mass concentration of 15%, and the fluoride is a 1:1 mass ratio of sodium fluoride and ammonium hydrogen fluoride.

[0075] Example 3

[0076] Except for the <anti-glare agent ingredients> being set as follows, the rest is basically the same as in Example 1:

[0077] By mass fraction, it comprises 6% silica sol, 50% hexafluoropropylene trimer diluent, 0.1% hydrochloric acid, 5% fluoride, 5% water, and the remainder is ethanol. The silica sol is a small-particle silica sol with a particle size less than 8 nm, the hexafluoropropylene trimer diluent has a mass concentration of 15%, the hydrochloric acid has a mass concentration of 20%, and the fluoride is a 1:1 mass ratio of sodium fluoride and ammonium hydrogen fluoride.

[0078] Example 4

[0079] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0080] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 8 MPa, the flow rate was 170 g / min, and the conveyor belt speed was 600 mm / min.

[0081] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0082] Example 5

[0083] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0084] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 10 MPa, the flow rate was 200 g / min, and the conveyor belt speed was 800 mm / min.

[0085] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0086] Example 6

[0087] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0088] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 500 mm / min.

[0089] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 250℃ and the baking time is 30 minutes.

[0090] Example 7

[0091] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 2:

[0092] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 8 MPa, the flow rate was 170 g / min, and the conveyor belt speed was 600 mm / min.

[0093] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0094] Example 8

[0095] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 2:

[0096] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 10 MPa, the flow rate was 200 g / min, and the conveyor belt speed was 800 mm / min.

[0097] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0098] Example 9

[0099] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 2:

[0100] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 500 mm / min.

[0101] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 250℃ and the baking time is 30 minutes.

[0102] Example 10

[0103] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 3:

[0104] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 8 MPa, the flow rate was 170 g / min, and the conveyor belt speed was 600 mm / min.

[0105] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0106] Example 11

[0107] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 3:

[0108] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 10 MPa, the flow rate was 200 g / min, and the conveyor belt speed was 800 mm / min.

[0109] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0110] Example 12

[0111] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 3:

[0112] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 500 mm / min.

[0113] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 250℃ and the baking time is 30 minutes.

[0114] Comparative Example 1

[0115] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0116] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 4 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 500 mm / min.

[0117] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0118] Comparative Example 2

[0119] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0120] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 11 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 500 mm / min.

[0121] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0122] Comparative Example 3

[0123] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0124] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 140 g / min, and the conveyor belt speed was 500 mm / min.

[0125] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0126] Comparative Example 4

[0127] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0128] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 210 g / min, and the conveyor belt speed was 500 mm / min.

[0129] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0130] Comparative Example 5

[0131] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0132] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 450 mm / min.

[0133] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0134] Comparative Example 6

[0135] Except for the preparation of the anti-glare glass, which is carried out according to the following steps, the rest is basically the same as in Example 1:

[0136] Anti-glare agent was sprayed onto one surface of a glass substrate using a spraying machine. The spraying pressure was 5 MPa, the flow rate was 150 g / min, and the conveyor belt speed was 900 mm / min.

[0137] After spraying, the coating is baked until the anti-glare agent forms anti-glare particles, thus producing anti-glare glass; the baking temperature is 200℃ and the baking time is 50 minutes.

[0138] 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.

[0139] Table 1

[0140]

[0141]

[0142] Table 2

[0143]

[0144] Note: In actual production, the number of anti-glare particles, the diameter of all anti-glare particles, the distance between adjacent particles, and the sphericity of the anti-glare glass produced are not exactly the same in the unit area of ​​the anti-glare layer. Due to the large difference in diameter, the number of anti-glare particles, the diameter of anti-glare particles, and the distance between adjacent particles in Table 2 are all marked with range values.

[0145] As can be seen from the table, this application controls the number of anti-glare particles in a unit area to be within the range of 100 to 200, and the diameter of the anti-glare particles is 5μm to 15μm. When the distance between adjacent anti-glare particles is 60μm to 150μm, the values ​​of vividness, gloss and haze are all excellent. Therefore, the anti-glare layer of the anti-glare glass has an excellent anti-glare effect.

[0146] 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-glare glass, characterized in that, It includes a glass substrate, one surface of which is provided with anti-glare particles, which constitute an anti-glare layer. Each unit area of ​​the anti-glare layer contains 100 to 200 anti-glare particles. The unit area is 1 mm long and 1 mm wide. The diameter of the anti-glare particles is 5 μm to 15 μm, and the distance between adjacent anti-glare particles is 60 μm to 150 μm.

2. The anti-glare glass according to claim 1, characterized in that, The sphericity of the anti-glare particles is not less than 0.

8.

3. The anti-glare glass according to claim 1, characterized in that, Within any given unit area, the sum of the projected areas of all the anti-glare particles in that unit area accounts for 4% to 6% of the total area of ​​that unit area.

4. The anti-glare glass according to claim 1, characterized in that, The distance between adjacent anti-glare particles is 90μm to 120μm.

5. The anti-glare glass according to claim 1, characterized in that, The average roughness of the anti-glare layer is 0.1 μm to 0.3 μm.

6. The anti-glare glass according to claim 1, characterized in that, It satisfies at least one of the following conditions: (1) The sharpness of the anti-glare glass is 50-70; (2) The gloss level of the anti-glare glass is 55-75; (3) The haze of the anti-glare glass is 3 to 9.

7. An anti-glare agent for preparing the anti-glare layer in the anti-glare glass according to any one of claims 1 to 6, characterized in that, Its components, by mass fraction, include 6%–15% silica sol, 20%–40% ethanol, 30%–50% hexafluoropropylene trimer diluent, 0.1%–0.5% hydrochloric acid, 2%–5% fluoride, and 2%–5% water.

8. A method for preparing the anti-glare glass according to any one of claims 1 to 6, characterized in that, It includes the following steps: An anti-glare agent is sprayed onto one surface of a glass substrate using a spray gun, and then baked until the anti-glare agent forms anti-glare particles. The following conditions must be met during spraying: (1) The pressure is 5 MPa to 10 MPa; (2) The flow rate is 150g / min to 200g / min; (3) The mesh belt transmission speed is 500mm / min~800mm / min.

9. The method for preparing anti-glare glass according to claim 8, characterized in that, The baking temperature is 200℃~250℃, and the baking time is 30min~50min.

10. A display device, characterized in that, It includes the anti-glare glass as described in any one of claims 1 to 6.

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