Temperable coated glass, and preparation method and application thereof

Abstract

This invention relates to the field of coated glass technology, and discloses a temperable coated glass, its preparation method, and its applications. The temperable coated glass provided by this invention achieves the highest level of film adhesion by introducing a Zr-Si-N substrate layer and optimizing the interface design, solving the problem of easy film peeling and ensuring the product can withstand high-temperature tempering processes. A composite protective layer composed of nickel-chromium alloy and aluminum-doped zinc oxide is used to encapsulate the Ag functional layer, resulting in extremely low performance degradation after rigorous dual 85 testing, and a breakthrough improvement in weather resistance and oxidation resistance. By introducing multiple light-absorbing adjustment layers, the indoor reflectivity of the tempered glass product is successfully reduced to below 15% and the outdoor reflectivity to below 9% without significantly affecting the light transmittance, greatly reducing light pollution and visual glare. The product possesses excellent energy-saving characteristics such as low emissivity and low shading coefficient while maintaining excellent optical uniformity and color stability.

Description

Technical Field

[0001] This invention relates to the field of coated glass technology, and in particular to a temperable coated glass, its preparation method, and its application. Background Technology

[0002] Tempered coated glass, as a functional glass product, possesses excellent optical and thermal properties by depositing a multi-layer film system consisting of metal layers such as gold, silver, and copper and their compounds onto the glass surface. Among them, the silver (Ag) layer is widely used as the core functional layer of low-emissivity tempered coated glass due to its high transmittance in the visible light range and high reflectivity to infrared light, and is widely used in building curtain walls, automotive glass, display devices, and other fields.

[0003] Currently, most low-emissivity temperable coated glass on the market employs single-layer or simple multi-layer film structures, such as film layers composed of materials like indium tin oxide, Ag, and silicon nitride. The Ag layer is often the functional layer, supplemented by oxides or nitrides as protective layers to achieve a certain level of low emissivity and high light transmittance. However, existing low-emissivity temperable coated glass still has many shortcomings in practical applications: First, the adhesion of the coating is insufficient, especially the bonding strength between the Ag layer and the glass substrate or adjacent coating layers is weak. This makes the coating prone to peeling during subsequent processing (such as tempering and bending) or long-term use, affecting product lifespan and appearance. Second, weather resistance is poor. The Ag layer is prone to oxidation or sulfidation in humid, sulfur-containing, or high-temperature environments, leading to a decline in optical and thermal properties. Third, optical performance stability is unsatisfactory. Due to insufficient precision in controlling the coating thickness and composition, problems such as color difference and uneven light transmission are easily caused, affecting the visual effect of building facades. Furthermore, the indoor and outdoor reflectivity of existing temperable coated glass is generally high, especially in strong light environments, easily producing glare, affecting visual comfort, and even causing light pollution.

[0004] Therefore, there is an urgent need for a new type of temperable coated glass structure and its preparation method, which can significantly improve the adhesion, weather resistance, and optical stability of the coating while maintaining low radiation and high light transmittance, and effectively reduce reflectivity, so as to meet the needs of high-end buildings and special glass applications. Summary of the Invention

[0005] The present invention aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, one object of the present invention is to provide a temperable coated glass.

[0006] A second objective of this invention is to provide a method for preparing such temperable coated glass.

[0007] The third objective of this invention is to provide a tempered glass product.

[0008] The fourth object of this invention is to provide applications for such tempered glass products.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A first aspect of the present invention provides a temperable coated glass, comprising a glass substrate, and a bottom dielectric composite layer, a first Ag functional layer, a first functional protective layer, an intermediate dielectric composite layer, a second Ag functional layer, a second functional protective layer, a top dielectric composite layer, and a top protective layer sequentially deposited on one side surface of the glass substrate. The bottom dielectric composite layer, the middle dielectric composite layer and the top dielectric composite layer are all composed of two or more dielectric layers and a light absorption adjustment layer, and the light absorption adjustment layer is disposed between any two adjacent dielectric layers. The dielectric layer in the bottom dielectric composite layer that is in contact with the glass substrate is a zirconium silicon oxynitride layer; Both the first and second functional protective layers comprise a combination of a nickel-chromium alloy layer and an aluminum-doped zinc oxide layer. The temperable coated glass has different materials for any adjacent layers.

[0010] In some embodiments of the present invention, the thicknesses of the first Ag functional layer and the second Ag functional layer are independently selected from 3-25 nm.

[0011] In some preferred embodiments of the present invention, the thicknesses of the first Ag functional layer and the second Ag functional layer are independently selected from 8-20 nm.

[0012] In some embodiments of the present invention, the underlying dielectric composite layer is composed of 3-5 dielectric layers and a light-absorbing adjustment layer stacked together.

[0013] In some embodiments of the present invention, the intermediate dielectric composite layer is composed of 3-7 dielectric layers and a light-absorbing adjustment layer stacked together.

[0014] In some embodiments of the present invention, the top dielectric composite layer is composed of 3-5 dielectric layers and a light-absorbing adjustment layer stacked together.

[0015] In some embodiments of the present invention, the total thicknesses of the bottom dielectric composite layer, the middle dielectric composite layer and the top dielectric composite layer are 14-85nm, 22-200nm and 14-130nm, respectively.

[0016] In some preferred embodiments of the present invention, the total thicknesses of the bottom dielectric composite layer, the middle dielectric composite layer and the top dielectric composite layer are 20-50 nm, 60-100 nm and 30-60 nm, respectively.

[0017] In some embodiments of the present invention, the thickness of the zirconium silicon oxynitride layer is 5-20 nm.

[0018] In some preferred embodiments of the present invention, the thickness of the zirconium silicon oxynitride layer is 8-15 nm.

[0019] In some embodiments of the present invention, the dielectric layer in the bottom dielectric composite layer is made of zirconium silicon oxynitride, and one or more of silicon oxynitride, silicon nitride, zinc oxide, and niobium oxide.

[0020] In some preferred embodiments of the present invention, the dielectric layer in the bottom dielectric composite layer is selected from zirconium silicon oxynitride, silicon oxynitride, and at least one of zinc oxide.

[0021] In some embodiments of the present invention, the dielectric layer in the intermediate dielectric composite layer is selected from one or more of zinc tin oxide, silicon nitride, silicon nitride, and zinc oxide.

[0022] In some preferred embodiments of the present invention, the dielectric layer in the intermediate dielectric composite layer is selected from one or more of zinc tin oxide, silicon nitride oxide, and zinc oxide.

[0023] In some embodiments of the present invention, the dielectric layer in the top dielectric composite layer is selected from one or more of zinc tin oxide, silicon nitride, and silicon nitride.

[0024] In some preferred embodiments of the present invention, the dielectric layer in the top dielectric composite layer is selected from one or more of zinc tin oxide, silicon nitride, and silicon nitride.

[0025] In some embodiments of the present invention, the thickness of the light absorption adjustment layer in the bottom dielectric composite layer, the middle dielectric composite layer and the top dielectric composite layer is independently selected from 1-20 nm.

[0026] In some preferred embodiments of the present invention, the thickness of the light absorption adjustment layer in the bottom dielectric composite layer, the middle dielectric composite layer and the top dielectric composite layer is independently selected from 1-5 nm.

[0027] In some embodiments of the present invention, the material of the light absorption regulating layer includes a nickel-chromium alloy.

[0028] In some embodiments of the present invention, the total thickness of the first functional protective layer and the second functional protective layer is independently selected from 4-50 nm.

[0029] In some preferred embodiments of the present invention, the total thickness of the first functional protective layer and the second functional protective layer is independently selected from 10-20 nm.

[0030] In some embodiments of the present invention, in the first functional protective layer and the second functional protective layer, the thickness of the nickel-chromium alloy layer is independently selected from 1-20 nm; and the thickness of the aluminum-doped zinc oxide layer is independently selected from 3-30 nm.

[0031] In some preferred embodiments of the present invention, in the first functional protective layer and the second functional protective layer, the thickness of the nickel-chromium alloy layer is independently selected from 1-5 nm; and the thickness of the aluminum-doped zinc oxide layer is independently selected from 5-15 nm.

[0032] In some embodiments of the present invention, the thickness of the top protective layer is 1-30 nm.

[0033] In some preferred embodiments of the present invention, the thickness of the top protective layer is 5-15 nm.

[0034] In some embodiments of the present invention, the material of the top protective layer is selected from one or more of zirconium oxide, titanium oxide, silicon oxide, silicon nitride, aluminum zirconium silicon nitride, and aluminum zirconium silicon oxide.

[0035] In some preferred embodiments of the present invention, the material of the top protective layer is selected from one or more of zirconium oxide, aluminum silicon nitride, and aluminum silicon oxide.

[0036] A second aspect of the present invention provides a method for preparing the temperable coated glass described in the first aspect of the present invention, comprising the following steps: Using magnetron sputtering deposition technology, the bottom dielectric composite layer, the first Ag functional layer, the first functional protective layer, the intermediate dielectric composite layer, the second Ag functional layer, the second functional protective layer, the top dielectric composite layer, and the top protective layer are sequentially deposited on one side surface of the glass substrate to obtain the temperable coated glass.

[0037] In some embodiments of the present invention, the sputtering pressure is 2 × 10⁻⁶. -3 mbar-5×10 -3 mbar.

[0038] A third aspect of the present invention provides a tempered glass article comprising the temperable coated glass described in the first aspect of the present invention after being tempered.

[0039] The fourth aspect of the present invention provides the application of the tempered glass products described in the third aspect of the present invention in building curtain walls, doors and windows, automotive glass, and display devices.

[0040] The basic principles of this invention are explained as follows: a. This invention employs zirconium silicon oxynitride (ZrSiN) with strong chemical bonding ability to the glass substrate. X ) as the bottom layer, and by introducing silicon nitride oxide (SiNO) X The dielectric layer optimizes the interlayer interface, improves overall adhesion and matches the coefficient of thermal expansion, ensuring that the film system can withstand the high thermal stress during the tempering process without peeling. b. For Ag low-emissivity functional layers that are easily oxidized and sulfided, this invention adopts a nickel-chromium alloy (NiCr) / aluminum-doped zinc oxide (AZO) double-layer composite structure as its direct protective layer. The NiCr layer serves as a sacrificial layer and lattice matching layer, while the AZO layer serves as a dense barrier layer. The two work together to provide both physical and chemical protection, which significantly delays the performance degradation of the Ag functional layer. c. The present invention introduces three light-absorbing adjustment layers at key positions in the film system. By precisely controlling their thickness, they actively absorb light of specific wavelengths, thereby effectively reducing the overall reflectivity of the film surface (especially indoor reflection) without excessively sacrificing visible light transmittance, and achieving low glare optical comfort. d. The present invention uses a top protective layer with high chemical stability (such as zirconium oxide) as the outermost layer to form a wear-resistant and corrosion-resistant physical barrier, thereby improving the environmental durability of the product during processing, transportation and use.

[0041] Compared with the prior art, the beneficial effects of the present invention are: 1) The temperable coated glass provided by this invention, by introducing a Zr-Si-N substrate layer and optimizing the interface design, achieves the highest level (5B) of film adhesion, fundamentally solving the problem of easy film peeling and ensuring that the product can withstand high-temperature tempering processing smoothly; the Ag functional layer is encapsulated with a composite protective layer composed of NiCr and AZO, which makes its performance degradation extremely low (change <1.5%) after the double 85 rigorous test, and the weather resistance and oxidation resistance are significantly improved. 2) By introducing a multi-layer light-absorbing adjustment layer, this invention successfully reduces the indoor reflectivity of tempered glass products made from tempered temperable coated glass to below 15% and the outdoor reflectivity to below 9% without significantly affecting the light transmittance. This greatly reduces light pollution and visual glare. The product possesses excellent energy-saving characteristics such as low emissivity (≤0.031) and low shading coefficient (≤0.25), while maintaining excellent optical uniformity and color stability. This tempered glass product successfully achieves a perfect balance of high adhesion, high durability, low reflectivity, and high energy efficiency, meeting the core requirements of high-performance glass in fields such as high-end green buildings. Detailed Implementation

[0042] The present invention will be further described in detail below through specific embodiments. Unless otherwise specified, the raw materials, reagents, or apparatus used in the embodiments and comparative examples are all available from conventional commercial sources or can be obtained by existing technical methods. Unless otherwise specified, the test or experimental methods are conventional methods in the art.

[0043] Example 1 This embodiment prepares a temperable coated glass, and the film structure is shown in Table 1 below: Table 1. Film structure of temperable coated glass in Example 1

[0044] The preparation method is as follows: After the white wave glass is sliced, edged, tempered, and coated and cleaned, a film layer is deposited on one side surface of the white wave glass according to the film layer structure in Table 1 using magnetron sputtering coating technology to obtain temperable coated glass. The magnetron sputtering coating parameters are shown in Table 2 below. Table 2. Sputtering coating process parameters for temperable coated glass in Example 1

[0045] Comparative Example 1 This comparative example prepares a temperable coated glass, the only difference from Example 1 being that the zirconium silicon oxynitride layer in the bottom dielectric composite layer is replaced with a silicon nitride layer.

[0046] Comparative Example 2 This comparative example prepares a temperable coated glass, which differs from Example 1 only in that neither the first nor the second functional protective layer contains a nickel-chromium alloy layer, but only an aluminum-doped zinc oxide layer.

[0047] Comparative Example 3 This comparative example prepares a temperable coated glass, which differs from Example 1 only in that neither the first nor the second functional protective layer contains an aluminum-doped zinc oxide layer, but only a nickel-chromium alloy layer.

[0048] Comparative Example 4 This comparative example prepares a temperable coated glass, which differs from Example 1 only in that the bottom dielectric composite layer does not contain a light absorption adjustment layer.

[0049] Comparative Example 5 This comparative example prepares a temperable coated glass, which differs from Example 1 only in that neither the bottom dielectric composite layer nor the middle dielectric composite layer contains a light absorption adjustment layer.

[0050] Comparative Example 6 This comparative example prepares a temperable coated glass, which differs from Example 1 only in that the bottom dielectric composite layer, the middle dielectric composite layer, and the top dielectric composite layer do not contain a light absorption adjustment layer.

[0051] Performance testing 1. The color data of the temperable coated glass prepared in Example 1 and Comparative Examples 1-6 before and after tempering were observed to quantitatively evaluate the optical properties of the temperable coated glass and its stability after the tempering process. The tests were performed using the portable energy-saving glass field comprehensive testing system GlasSmart1000. The colorimetric calculation conditions were CIE standard illuminant D65, 10° field of view, and the tempering conditions were 650℃ for 300s. Table 3. Transmittance and color data of temperable coated glass before tempering in Example 1 and Comparative Examples 1-6

[0052] Where Tv is the visible light transmittance; Y is the luminance factor; L a and b L represents the CIELAB color space coordinates. For brightness (0 for black, 100 for white), a The red-green axis (+a represents the red direction, -a represents the green direction), b The axis is yellow and blue (+b represents the yellow direction, -b represents the blue direction).

[0053] Table 3 shows the transmittance and color data of the temperable coated glass before tempering in Example 1 and Comparative Examples 1-6. As can be seen from Table 3, the temperable coated glass in Example 1 has a low reflectance and neutral color. In Comparative Example 1, replacing the zirconium silicon oxynitride layer with a silicon nitride layer resulted in a slightly higher reflectance Y-value and a reddish color, indicating that the zirconium silicon oxynitride underlayer helps reduce reflection and improve color neutrality. In Comparative Example 2, the lack of a nickel-chromium alloy functional protective layer resulted in an increased reflectance Y-value, indicating that the nickel-chromium alloy layer contributes to reducing reflection. In Comparative Example 3, the lack of an aluminum-doped zinc oxide functional protective layer resulted in a slightly higher reflectance Y-value and a slightly reddish color, indicating that the aluminum-doped zinc oxide layer has a fine-tuning effect on optical performance. In Comparative Examples 4-6, the number of light-absorbing adjustment layers gradually decreased, and the reflectance Y-value significantly increased, proving that the nickel-chromium alloy light-absorbing adjustment layer is key to reducing reflectance.

[0054] Table 4. Transmittance and color data of temperable coated glass after tempering in Examples 1 and Comparative Examples 1-6

[0055] Table 4 shows the transmittance and color data of the temperable coated glass in Example 1 and Comparative Examples 1-6 after tempering. As can be seen from Table 4, the visible light transmittance of the temperable coated glass in Example 1 increased due to the high temperature, but the reflection Y value further decreased, indicating that the optical performance of the film system was better after tempering. Although some functional layers were replaced or missing in Comparative Examples 1-3, the performance after tempering was not much different from that in Example 1, indicating that the tempering process itself has a certain repair or densification effect on the film layer, but Example 1 still maintained the lowest reflection. In Comparative Examples 4-6, the reflection Y value increased significantly as the nickel-chromium alloy layer decreased, which again proves that the nickel-chromium alloy light absorption adjustment layer is still effective after tempering.

[0056] 2. The temperable coated glass from Examples 1 and 1-6, after tempering treatment (650℃, 300s), were respectively made into insulated products with the following structure: 6mm thick tempered coated glass / 12mm thick air gap / 6mm thick clear glass. The glass was tested using GlasSmart1000, and the thermal performance parameters of the insulated products were calculated according to the standard "NFRC 100-2020: Procedure for Evaluating the Thermal Performance of Building Doors, Windows and Skylights". Table 5. Test results of thermal performance of hollow products

[0057] Table 5 shows the thermal performance test results of the insulated glass products. As can be seen from Table 5, the insulated glass products made with tempered coated glass in Example 1 have low reflectivity, low shading, and low radiation characteristics, meeting the requirements of high-performance energy-saving glass. The insulated glass products made with tempered coated glass in Comparative Examples 1-3 have performance similar to those in Example 1, indicating that the adjustment of the bottom layer and some functional protective layers has little impact on the overall performance of the insulated glass. The insulated glass products made with tempered coated glass in Comparative Examples 4-6 show significant deterioration in indoor and outdoor reflectivity, shading coefficient, and emissivity, proving that the nickel-chromium alloy light-absorbing adjustment layer is crucial to the final energy-saving effect of the insulated glass products.

[0058] 3. Adhesion tests were conducted on the temperable coated glass in Example 1 and Comparative Example 1, in accordance with ASTM D3359-23, "Standard Test Method for Assessing Adhesion by Tape Test": The tools used include a multi-blade cutter (grid cutter), 3M 610 special tape, a standard rubber roller, a soft brush, a 5x magnifying glass, and a standard rating chart. The steps are as follows: Use the multi-blade cutter to cut a 1mm×1mm grid on the film surface, so that the scratches penetrate the film layer to the glass substrate. Use the soft brush to remove debris. Firmly stick the 3M 610 special tape to the grid area and press it flat. After holding for 90 seconds, quickly peel off the tape at a 180° angle. Observe the film layer peeling in the grid area under a magnifying glass and compare it with the standard chart for rating (0B-5B, 5B is the best, no peeling).

[0059] Table 6 Adhesion test results of temperable coated glass in Example 1 and Comparative Example 1

[0060] Table 6 shows the adhesion test results of the temperable coated glass in Example 1 and Comparative Example 1. As can be seen from Table 6, the film adhesion of the temperable coated glass in Example 1 is excellent and there is no peeling. The adhesion of the temperable coated glass in Comparative Example 1 is significantly reduced, indicating that using the zirconium silicon oxynitride layer as the bottom layer can greatly improve the bonding force between the film layer and the glass substrate.

[0061] 4. The abrasion resistance of the temperable coated glass in Example 1 and Comparative Example 1 was tested, and the steps were as follows: After cleaning the sample surface, use a lint-free cloth to apply a small amount of anhydrous ethanol and wipe the same area of ​​the sample film surface in a straight line with moderate force. Observe and record whether there is any film peeling, scratches or loss of gloss on the film surface after wiping 10 and 20 times.

[0062] Table 7. Abrasion resistance test results of temperable coated glass in Example 1 and Comparative Example 1

[0063] Table 7 shows the abrasion resistance test results of the temperable coated glass in Example 1 and Comparative Example 1. As can be seen from Table 7, the temperable coated glass in Example 1 has excellent abrasion resistance and will not be damaged by daily cleaning. The bottom material of the temperable coated glass in Comparative Example 1 is not abrasion resistant and is easily damaged. This indicates that the zirconium silicon oxynitride bottom layer not only improves adhesion but also significantly enhances the surface abrasion resistance of the film.

[0064] 5. The temperable coated glass in Examples 1, 2, and 3 were subjected to a double 85 (85°C, 85% RH, 240h) damp heat test. Subsequently, the visible light transmittance and reflectance were remeasured using GlasSmart1000, and the performance degradation rate was calculated to accelerate the simulation of the long-term aging resistance, oxidation resistance, and sulfidation resistance of the coating under humid and hot climate, and to verify the reliability of the functional protective layer. Table 8 Results of the double 85 damp heat test on the temperable coated glass in Example 1, Comparative Example 2 and Comparative Example 3

[0065] Table 8 shows the results of the double 85 humidity test on the temperable coated glass in Example 1, Comparative Example 2, and Comparative Example 3. As can be seen from Table 8, the temperable coated glass in Example 1 has excellent high temperature and humidity resistance and stable performance. Comparative Examples 2 and 3 lack the nickel-chromium alloy layer and the aluminum-doped zinc oxide layer, respectively, which provides insufficient protection for the Ag layer. The Ag layer is easily oxidized / sulfurized, leading to failure. This indicates that the composite functional protective layer of the nickel-chromium alloy layer and the aluminum-doped zinc oxide layer can effectively block water vapor and corrosive media, significantly improving the weather resistance of the Ag functional layer.

[0066] The above results demonstrate that the temperable coated glass provided by this invention possesses characteristics such as low reflectivity, stable color, temperability, strong film adhesion, good surface wear resistance, and excellent weather resistance. It overcomes the defects of existing coated glass, including unstable optical performance, high reflectivity, easy dizziness, poor film adhesion, easy film damage, poor weather resistance, and easy oxidation / sulfurization of the Ag layer. The tempered glass products prepared by this invention have the characteristics of low shading, low radiation, and low reflectivity, overcoming the defects of existing products such as high shading coefficient, high emissivity, and high indoor reflectivity. It can better meet the application requirements of building curtain walls, doors and windows, automotive glass, display devices, and other fields.

Claims

1. Temperable coated glass, characterized in that, It includes a glass substrate, and a bottom dielectric composite layer, a first Ag functional layer, a first functional protective layer, an intermediate dielectric composite layer, a second Ag functional layer, a second functional protective layer, a top dielectric composite layer, and a top protective layer sequentially deposited on one side surface of the glass substrate. The bottom dielectric composite layer, the middle dielectric composite layer and the top dielectric composite layer are all composed of two or more dielectric layers and a light absorption adjustment layer, and the light absorption adjustment layer is disposed between any two adjacent dielectric layers. The dielectric layer in the bottom dielectric composite layer that is in contact with the glass substrate is a zirconium silicon oxynitride layer; Both the first and second functional protective layers comprise a combination of a nickel-chromium alloy layer and an aluminum-doped zinc oxide layer. The temperable coated glass has different materials for any adjacent layers.

2. The temperable coated glass of claim 1, wherein, The thicknesses of the first Ag functional layer and the second Ag functional layer are independently selected from 3-25 nm.

3. The temperable coated glass of claim 1, wherein, The total thicknesses of the bottom dielectric composite layer, the middle dielectric composite layer, and the top dielectric composite layer are 14-85nm, 22-200nm, and 14-130nm, respectively.

4. The temperable coated glass of claim 3, wherein, The dielectric material of the bottom dielectric composite layer is selected from zirconium silicon oxynitride, as well as silicon oxynitride, silicon nitride, zinc oxide, niobium oxide, or one or more of these materials. And / or, the material of the dielectric layer in the intermediate dielectric composite layer is selected from one or more of zinc tin oxide, silicon nitride, silicon nitride, and zinc oxide; And / or, the material of the dielectric layer in the top dielectric composite layer is selected from one or more of zinc tin oxide, silicon nitride, and silicon nitride.

5. The temperable coated glass of claim 3, wherein, The thicknesses of the light absorption modulation layers in the bottom dielectric composite layer, the middle dielectric composite layer, and the top dielectric composite layer are each independently selected from 1-20 nm; And / or, the material of the light absorption conditioning layer includes a nickel-chromium alloy.

6. The temperable coated glass of claim 1, wherein, The total thickness of the first functional protective layer and the second functional protective layer are each independently selected from 4-50 nm.

7. The temperable coated glass of claim 1, wherein, The thickness of the top protective layer is 1-30 nm; And / or, the material of the top protective layer is selected from one or more of zirconium oxide, titanium oxide, silicon oxide, silicon nitride, aluminum zirconium silicon nitride, and aluminum zirconium silicon oxide.

8. The method for preparing temperable coated glass according to any one of claims 1-7, characterized in that, Includes the following steps: Using magnetron sputtering deposition technology, the bottom dielectric composite layer, the first Ag functional layer, the first functional protective layer, the intermediate dielectric composite layer, the second Ag functional layer, the second functional protective layer, the top dielectric composite layer, and the top protective layer are sequentially deposited on one side surface of the glass substrate to obtain the temperable coated glass.

9. A tempered glass product, characterized in that, Including the temperable coated glass according to any one of claims 1-7 that has undergone tempering treatment.

10. The application of the tempered glass product according to claim 9 in building curtain walls, doors and windows, automotive glass, and display devices.

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