Coated glass and laminated glass

Abstract

The present application relates to coated glass and laminated glass. The coated glass (100) comprises a first glass plate (110) and a low-emissivity laminate (120) arranged on at least one surface of the first glass plate (110), wherein the low-emissivity laminate (120) comprises at least one transparent conductive oxide layer (122) and at least one visible light blocking layer arranged on the side of the at least one transparent conductive oxide layer (122) away from the first glass plate (110), the total physical thickness of the at least one visible light blocking layer being greater than 10nm; and the visible light transmittance of the first glass plate (110) is TL1, the visible light transmittance of the coated glass (100) is TL2, and TL1 and TL2 satisfy TL / 2 / TL1≤0.4.

Description

Coated glass and laminated glass

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 2023111872277, filed on September 14, 2023, entitled “Coated Glass and Laminated Glass,” the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the field of glass, and in particular to coated glass and laminated glass. Background Art

[0004] More and more automakers are looking to eliminate sunroof blinds to increase interior space and reduce vehicle weight and manufacturing costs. Traditional sunroof glass without blinds allows excessive light into the vehicle, impacting passengers' visual experience and increasing interior temperatures, thus affecting thermal comfort. To reduce visible light transmittance and improve thermal insulation, traditional technologies use laminated glass, using tinted PVB as the bonding layer, and even adding dimming elements. However, this significantly increases manufacturing costs.

[0005] In addition, the sunroof glass is not only required to have low visible light transmittance, but also low emissivity. For example, by adding a low-emissivity laminate to the surface on the inside of the car, the emissivity of the sunroof glass on the inside of the car can be reduced from about 0.9 to below 0.3, thereby achieving the purpose of thermal insulation. Although ordinary low-emissivity laminates can reduce the emissivity of the sunroof glass, they will also increase the visible light reflectivity of the sunroof glass on the inside of the car, causing the passengers and objects in the car (such as the center console display or the display of other electronic devices) to form obvious reflections on the sunroof glass due to mirror reflection, causing visual interference to passengers, especially those in the back row, and causing discomfort to the human eye. In some cases, when passengers in the car use electronic devices such as mobile phones, the content of the electronic devices may be clearly displayed on the sunroof glass and observed by other passengers, resulting in privacy leakage.

[0006] Summary of the Invention

[0007] Based on this, some embodiments of the present application provide a coated glass and a laminated glass.

[0008] In a first aspect, the present application provides a coated glass comprising a first glass plate and a low-emissivity laminate disposed on at least one surface of the first glass plate, the low-emissivity laminate comprising at least one transparent conductive oxide layer and at least one visible light blocking layer, the at least one visible light blocking layer being disposed on a side of the at least one transparent conductive oxide layer away from the first glass plate, and the total physical thickness of the at least one visible light blocking layer being greater than 10 nm;

[0009] The visible light transmittance of the first glass plate is TL1, the visible light transmittance of the coated glass is TL2, and TL1 and TL2 satisfy TL2 / TL1≤0.4.

[0010] Wherein, the visible light reflectivity RL1 of the coated glass on the side of the low-emissivity laminate is less than 6%.

[0011] Wherein, the visible light reflectivity RL1 of the coated glass on the side of the low-emissivity laminate is ≤5%.

[0012] Wherein, the visible light reflectivity RL1 of the coated glass on the side of the low-emissivity laminate is ≤4%.

[0013] Wherein, the visible light reflectivity RL1 of the coated glass on the side of the low-emissivity laminate is ≤3%.

[0014] The material of the visible light blocking layer is selected from any one or more of Ni, Cr, Ti, Nb, Mo, Si, Zr and W.

[0015] The transparent conductive oxide layer is made of at least one material selected from doped zinc oxide, indium tin oxide, chromium-doped nickel oxide, fluorine-doped tin oxide, and zinc tin oxide. The doped zinc oxide is zinc oxide doped with at least one element selected from aluminum, tungsten, hafnium, gallium, yttrium, niobium, and neodymium.

[0016] Wherein, the thickness of the transparent conductive oxide layer is 80nm to 500nm.

[0017] Wherein, the emissivity of the coated glass on the side of the low-emissivity laminate is less than 0.3.

[0018] The low-emissivity laminate includes a transparent conductive oxide layer, a visible light blocking layer, a first high refractive index layer, a second high refractive index layer and an outermost low refractive index layer stacked in sequence from the surface of the first glass plate outward, and the physical thickness of the visible light blocking layer is 11nm to 16nm.

[0019] The low-emissivity laminate includes a transparent conductive oxide layer, a first visible light blocking layer, an intermediate barrier layer, a second visible light blocking layer, a first high refractive index layer, a second high refractive index layer and an outermost low refractive index layer stacked in sequence from the surface of the first glass plate to the outside, and the total physical thickness of the first visible light blocking layer and the second visible light blocking layer is 11 nm to 42 nm.

[0020] Wherein, the refractive index of the intermediate barrier layer is greater than or equal to 1.8.

[0021] Wherein, the physical thickness of the intermediate barrier layer is 10 nm to 70 nm.

[0022] The physical thickness of the intermediate barrier layer is greater than the physical thickness of the first visible light blocking layer, and the physical thickness of the intermediate barrier layer is greater than the physical thickness of the second visible light blocking layer.

[0023] The material of the intermediate barrier layer is selected from oxides of at least one element selected from Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi and Ta, or nitrides or oxynitrides of at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

[0024] The ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (0.85-4):1.

[0025] The ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (1-3):1.

[0026] The ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (1-2):1.

[0027] The refractive index of the first high refractive index layer is 1.8 to 2.3, the refractive index of the second high refractive index layer is 2.0 to 2.7, and the refractive index of the second high refractive index layer is greater than that of the first high refractive index layer.

[0028] The material of the first high refractive index layer is selected from the nitride or oxynitride of at least one element among Si, Al, Zr, B, Y, Ce, La and Ti, and the material of the second high refractive index layer is selected from the oxide of at least one element among Zn, Sn, Ti, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi and Ta.

[0029] The refractive index of the outermost low refractive index layer is less than 1.8, and the material of the outermost low refractive index layer is selected from oxides of at least one element among Si, Al and B, or fluorides of at least one element among Mg, Al and Ba.

[0030] The physical thickness of the first high refractive index layer is 5nm to 40nm, the physical thickness of the second high refractive index layer is 5nm to 50nm, and the physical thickness of the outermost low refractive index layer is 40nm to 150nm.

[0031] The low-emissivity laminate further includes an innermost barrier layer, located between the surface of the first glass plate and the transparent conductive oxide layer. The physical thickness of the innermost barrier layer is greater than or equal to 5 nm. The material of the innermost barrier layer is selected from oxides of at least one element selected from Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi, and Ta, or nitrides or oxynitrides of at least one element selected from Si, Al, Zr, B, Y, Ce, La, and Ti.

[0032] In a second aspect, the present application provides a laminated glass comprising a second glass plate, an adhesive layer and the coated glass as described above, wherein the second glass plate is arranged on a surface of the first glass plate away from the low-emissivity laminate via the adhesive layer.

[0033] Wherein, the visible light transmittance of the laminated glass is ≤10%.

[0034] Wherein, the visible light transmittance of the laminated glass is ≤5%.

[0035] Wherein, the visible light reflectivity of the laminated glass measured from the low-emissivity laminated layer side of the laminated glass is ≤6%.

[0036] Wherein, the visible light reflectance of the laminated glass measured from the low-e laminated layer side of the laminated glass is ≤4%;

[0037] The a value of the reflected color Lab value of the laminated glass measured from the low-emissivity laminated layer side of the laminated glass is -6 to 0.5, and the b value is -15 to 0.

[0038] The first glass plate is transparent glass or tinted glass, the thickness of the first glass plate is 0.7 mm to 2.1 mm, and the visible light transmittance of the first glass plate is 25% to 95%.

[0039] Wherein, the second glass plate is tinted glass, and the visible light transmittance of the second glass plate is 10% to 85%.

[0040] The second glass plate is transparent glass or extra-transparent glass, the total iron content of the transparent glass is less than or equal to 0.1%, the total iron content of the extra-transparent glass is less than or equal to 0.015%, and the visible light transmittance of the second glass plate is 80% to 95%.

[0041] Wherein, the laminated glass further includes an infrared reflective film, which includes at least one metal layer. The infrared reflective film is provided on the surface of the second glass plate facing the bonding layer, or is provided on the bonding layer.

[0042] Wherein, the adhesive layer is a transparent thermoplastic polymer film, and the visible light transmittance of the transparent thermoplastic polymer film is greater than or equal to 80%.

[0043] The details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without any creative work.

[0045] FIG1 is a schematic structural diagram of the coated glass provided in this application;

[0046] FIG2 is a schematic cross-sectional view of a low-emissivity stack provided by some embodiments of the present application;

[0047] FIG3 is a schematic cross-sectional view of a low-emissivity stack provided in some other embodiments of the present application;

[0048] FIG4 is a schematic structural diagram of laminated glass provided in some embodiments of the present application;

[0049] FIG5 is a schematic structural diagram of laminated glass provided in other embodiments of the present application;

[0050] Explanation of the numbers in the drawings: laminated glass 10, coated glass 100, first glass plate 110, low-emissivity laminate 120, innermost barrier layer 121, transparent conductive oxide layer 122, first high refractive index layer 123, second high refractive index layer 124, outermost low refractive index layer 125, visible light blocking layer 126, first visible light blocking layer 127, intermediate barrier layer 128, second visible light blocking layer 129, second glass plate 210, adhesive layer 220, infrared reflective film 230. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] As shown in FIG1 , a first aspect of the present application provides a coated glass 100. The coated glass 100 includes a first glass sheet 110 and a low-emissivity laminate 120 disposed on at least one surface of the first glass sheet 110. The low-emissivity laminate 120 can be deposited on at least one surface of the first glass sheet 110 using a process such as magnetron sputtering to reduce the emissivity of the first glass sheet 110. The emissivity of the first glass sheet 110 without the low-emissivity laminate 120 is approximately 0.9. The emissivity of the coated glass 100 provided herein on the side with the low-emissivity laminate 120 is less than 0.3. In some embodiments, the emissivity of the coated glass 100 provided herein on the side with the low-emissivity laminate 120 is less than or equal to 0.25. Optionally, the emissivity of the coated glass 100 provided herein on the side with the low-emissivity laminate 120 is less than or equal to 0.20, providing excellent low-emissivity properties for both summer heat insulation and winter heat preservation.

[0053] In some embodiments, the sheet resistance R of the low-emissivity stack 120 is ≤40Ω / □. In some embodiments, the sheet resistance R of the low-emissivity stack 120 is ≤30Ω / □. Alternatively, the sheet resistance R of the low-emissivity stack 120 is ≤20Ω / □.

[0054] In some embodiments, the low-emissivity stack 120 includes at least one transparent conductive oxide (TCO) layer and at least one visible light blocking layer, with the total physical thickness of the at least one visible light blocking layer being greater than 10 nm. The transparent conductive oxide (TCO) layer, as the low-emissivity functional layer in the low-emissivity stack 120, primarily reflects mid- and far-infrared radiation to achieve a low-emissivity effect. The visible light blocking layer primarily absorbs visible light to significantly reduce the visible light transmittance of the coated glass 100. Specifically, the at least one visible light blocking layer is disposed on the side of the at least one transparent conductive oxide layer away from the first glass plate 110.

[0055] Specifically, the visible light transmittance of the first glass sheet 110 is TL1, and the visible light transmittance of the coated glass 10 is TL2, where TL1 and TL2 satisfy TL2 / TL1 ≤ 0.4. In some embodiments, TL2 / TL1 ≤ 0.35, or TL2 / TL1 ≤ 0.30, or TL2 / TL1 ≤ 0.25, or TL2 / TL1 ≤ 0.20, or TL2 / TL1 ≤ 0.15, or even TL2 / TL1 ≤ 0.10. By adding at least one visible light blocking layer to the low-emissivity laminate 120, the present application can achieve a coated glass 100 with a significantly lower visible light transmittance compared to the first glass sheet 110 without the low-emissivity laminate 120. This allows the use of lower-cost clear glass or tinted glass with higher visible light transmittance as the first glass sheet 110, significantly reducing the manufacturing cost and difficulty of the coated glass 100. Moreover, when the coated glass 10 is further made into laminated glass with low visible light transmittance, the selection of higher-cost tinted glass, tinted adhesive layer and dimming elements can be reduced, thereby significantly reducing the manufacturing cost and difficulty of laminated glass and increasing the diversity of combination options of laminated glass.

[0056] In some embodiments, the visible light reflectance RL1 of the coated glass 100 on the low-emissivity laminate side is less than 6%. Adding at least one visible light blocking layer to the low-emissivity laminate 120 further helps reduce the visible light reflectance RL1. In some embodiments, RL1 is ≤ 5%. Alternatively, RL1 is ≤ 4%. Alternatively, RL1 is ≤ 3%. This configuration allows the coated glass 100 to maintain a low visible light reflectance while significantly reducing visible light transmittance, thus avoiding interference from specular reflections.

[0057] As shown in FIG2 , the low-emissivity stack 120 includes a visible light blocking layer, specifically comprising an innermost blocking layer 121, a transparent conductive oxide layer 122, a visible light blocking layer 126, a first high refractive index layer 123, a second high refractive index layer 124, and an outermost low refractive index layer 125, stacked in order from the surface of the first glass substrate 110. Visible light blocking layer 126 is in direct contact with transparent conductive oxide layer 122 and has a physical thickness of 11 to 16 nm, with specific examples including 11 nm, 12 nm, 13 nm, 14 nm, 15 nm, and 16 nm.

[0058] As shown in FIG3 , the low-emissivity stack 120 includes two visible light blocking layers, specifically including an innermost blocking layer 121, a transparent conductive oxide layer 122, a first visible light blocking layer 127, an intermediate blocking layer 128, a second visible light blocking layer 129, a first high refractive index layer 123, a second high refractive index layer 124, and an outermost low refractive index layer 125, stacked in sequence from the surface of the first glass substrate 110. The first visible light blocking layer 127 is in direct contact with the transparent conductive oxide layer 122. The total physical thickness of the first visible light blocking layer 127 and the second visible light blocking layer 129 is between 11 nm and 42 nm, and specific examples include 11 nm, 15 nm, 18 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 42 nm, and the like.

[0059] In the present application, the materials and thicknesses of each layer of the low-emissivity laminate 120 are optimized so that the low-emissivity laminate 120 can withstand subsequent high-temperature heat treatment of at least 560°C or other bending forming processes, such as the self-weight bending process or press bending process in the production process of automotive glass, and the optical properties and mechanical properties of the coated glass 100 can meet the use standards of automotive glass.

[0060] In Figures 2 and 3, the innermost barrier layer 121 is located between the surface of the first glass substrate 110 and the transparent conductive oxide layer 122. The innermost barrier layer 121 is directly deposited on the surface of the first glass substrate 110. The innermost barrier layer 121 can prevent the alkali metal ions in the first glass substrate 110 from damaging the transparent conductive oxide layer 122 during high-temperature heat treatment, which helps improve the thermal stability of the low-emissivity stack 120. The physical thickness of the innermost barrier layer 121 is greater than or equal to 5 nm. The material of the innermost barrier layer 121 is selected from an oxide of at least one element selected from Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi, and Ta, or a nitride or oxynitride of at least one element selected from Si, Al, Zr, B, Y, Ce, La, and Ti. Examples of the material of the innermost barrier layer 121 include Si3N4, ZrN x 、ZrO x wait.

[0061] The material of the transparent conductive oxide layer 122 is selected from doped zinc oxide, indium tin oxide (ITO), chromium doped nickel oxide, fluorine doped tin oxide (FTO) and zinc tin oxide (ZnSnO x), and the doped zinc oxide is zinc oxide doped with at least one of aluminum, tungsten, hafnium, gallium, yttrium, niobium, and neodymium. The physical thickness of the transparent conductive oxide layer 122 is 80 nm to 500 nm, with specific examples being 80 nm, 90 nm, 100 nm, 150 nm, 200 nm, 250 nm, 300 nm, 350 nm, 400 nm, 450 nm, and 500 nm. In some embodiments, the physical thickness of the transparent conductive oxide layer 122 is 100 nm to 300 nm.

[0062] The low-emissivity stack 120 may include one or two visible light blocking layers. The material of the visible light blocking layers is selected from any one or more of Ni, Cr, Ti, Nb, Mo, Si, Zr, and W. Specific examples include nickel-chromium alloy (NiCr), nickel-silicon alloy (NiSi), metallic chromium (Cr), and titanium-molybdenum alloy (MoTi). When two visible light blocking layers are provided, the materials of the two visible light blocking layers may be the same, such as nickel-chromium alloy (NiCr). It is understood that the materials of the two visible light blocking layers may also be different, such as one nickel-chromium alloy (NiCr) and the other metallic chromium (Cr).

[0063] In some embodiments, the low-emissivity stack 120 is provided with two visible light blocking layers, such as the first visible light blocking layer 127 and the second visible light blocking layer 129 in FIG3 . The physical thickness of the first visible light blocking layer 127 can be 5 nm to 25 nm, and the physical thickness of the second visible light blocking layer 129 can be 3 nm to 20 nm. Taking into account factors such as visible light transmittance, visible light reflectance, manufacturing cost, and manufacturing difficulty, in some embodiments, the total physical thickness of the first visible light blocking layer 127 and the second visible light blocking layer 129 is 15 nm to 35 nm.

[0064] In other embodiments, the low-emissivity stack 120 is provided with two visible light blocking layers, and the ratio of the physical thickness of the first visible light blocking layer 127 to the physical thickness of the second visible light blocking layer 129 is (0.85-4):1, and specific examples include 0.85:1, 0.9:1, 0.95:1, 1:1, 1.05:1, 1.2:1, 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, etc. In some embodiments, the physical thickness of the first visible light blocking layer 127 is greater than the physical thickness of the second visible light blocking layer 129. For example, the ratio of the physical thickness of the first visible light blocking layer 127 to the physical thickness of the second visible light blocking layer 129 is (1-3):1. Alternatively, the ratio of the physical thickness of the first visible light blocking layer 127 to the physical thickness of the second visible light blocking layer 129 is (1-2):1. Alternatively, the ratio of the physical thickness of the first visible light blocking layer 127 to the physical thickness of the second visible light blocking layer 129 is (1-1.5):1. The above configuration is beneficial for further reducing the visible light reflectance of the coated glass 100 on the side of the low-emissivity laminate 120.

[0065] In FIG3 , the low-emissivity stack 120 further includes an intermediate barrier layer 128 positioned between the first visible light blocking layer 127 and the second visible light blocking layer 129. Intermediate barrier layer 128 is optically designed to reduce visible light reflectance and improve reflection color, and protects the first and second visible light blocking layers 127 and 129 during magnetron sputtering and high-temperature heat treatment. Intermediate barrier layer 128 has a physical thickness of 10 nm to 70 nm. The material of intermediate barrier layer 128 is selected from an oxide of at least one element selected from Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi, and Ta, or a nitride or oxynitride of at least one element selected from Si, Al, Zr, B, Y, Ce, La, and Ti. In some embodiments, the refractive index of intermediate barrier layer 128 is greater than or equal to 1.8. Specific examples include Si3N4, TiO2, SnO2, and Nb2O5.

[0066] In some embodiments, the physical thickness of the intermediate barrier layer 128 is greater than the physical thickness of the first visible light blocking layer 127, and the physical thickness of the intermediate barrier layer 128 is greater than the physical thickness of the second visible light blocking layer 129. In some embodiments, the physical thickness of the intermediate barrier layer 128 is greater than the sum of the physical thicknesses of the first visible light blocking layer 127 and the second visible light blocking layer 129. Specifically, the physical thickness of the intermediate barrier layer 128 is 20 nm to 50 nm, for example, 20 nm, 25 nm, 30 nm, 40 nm, 45 nm, 50 nm, etc.

[0067] In this application, the transparent conductive oxide layer 122 serves as the low-emissivity functional layer in the low-emissivity laminate 120, providing excellent low-emissivity performance, including heat insulation in summer and warmth retention in winter. The lower the emissivity of the low-emissivity laminate 120, the better the low-emissivity performance. Increasing the physical thickness of the transparent conductive oxide layer 122 as much as possible can further reduce emissivity, but this also increases visible light reflectivity and causes the reflected color to deviate from neutral, potentially rendering the coated glass 100 unsuitable for automotive applications. Therefore, the low-emissivity laminate 120 provided in this application also includes a first high-refractive-index layer 123, a second high-refractive-index layer 124, and an outermost low-refractive-index layer 125, stacked sequentially from the surface of the first glass sheet 110 outward. These layers are designed to reduce visible light reflectivity and improve reflected color, as well as protect the transparent conductive oxide layer 122, visible light blocking layer 126, and second visible light blocking layer 129 during high-temperature heat treatment. The outermost low-refractive-index layer 125 is the layer of the low-emissivity laminate 120 that is furthest from the surface of the first glass plate 110. As shown in FIG2 , the first high-refractive-index layer 123 is in direct contact with the visible-light-blocking layer 126; and as shown in FIG3 , the first high-refractive-index layer 123 is in direct contact with the second visible-light-blocking layer 129.

[0068] In some embodiments, the refractive index of the first high refractive index layer 123 is 1.8 to 2.3. In one example, the material of the first high refractive index layer 123 is selected from nitrides or oxynitrides of at least one element selected from Si, Al, Zr, B, Y, Ce, La, and Ti, and specifically includes Si3N4, AlN, BN, etc.

[0069] In other embodiments, the refractive index of the second high refractive index layer 124 is between 2.0 and 2.7. In one example, the material of the second high refractive index layer 124 is selected from oxides of at least one element selected from Zn, Sn, Ti, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi, and Ta, specifically TiO2, ZrO2, Nb2O5, and the like. In one example, the refractive index of the second high refractive index layer 124 is greater than that of the first high refractive index layer 123, thereby further facilitating reduced visible light reflectivity and improved reflected color. In one example, the refractive index of the second high refractive index layer 124 is at least 0.3 greater than that of the first high refractive index layer 123. Optionally, the refractive index of the second high refractive index layer 124 is at least 0.5 greater than that of the first high refractive index layer 123, for example, the refractive index of the second high refractive index layer 124 is 2.5 and the refractive index of the first high refractive index layer 123 is 2.0.

[0070] The refractive index of the outermost low-refractive-index layer 125 is less than 1.8. In some embodiments, the refractive index of the outermost low-refractive-index layer 125 is less than or equal to 1.7. Alternatively, the refractive index of the outermost low-refractive-index layer 125 is less than or equal to 1.6. The material of the outermost low-refractive-index layer 125 is selected from oxides of at least one element selected from Si, Al, and B, or fluorides of at least one element selected from Mg, Al, and Ba, and specifically includes SiO2, Al2O3, MgF2, etc.

[0071] The physical thickness of the first high refractive index layer 123 is 5 nm to 40 nm, the physical thickness of the second high refractive index layer 124 is 5 nm to 50 nm, and the physical thickness of the outermost low refractive index layer 125 is 40 nm to 150 nm.

[0072] In FIG2 , the low-emissivity stack 120 includes a visible light blocking layer 126. The physical thickness of the first high refractive index layer 123 is 10 nm to 40 nm, specifically 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, etc. In some embodiments, the physical thickness of the first high refractive index layer 123 is 15 nm to 30 nm. The physical thickness of the second high refractive index layer 124 is 20 nm to 50 nm, specifically 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, 50 nm, etc. In some embodiments, the physical thickness of the second high refractive index layer 124 is 20 nm to 40 nm.

[0073] In FIG3 , the low-emissivity stack 120 includes two visible light blocking layers, namely a first visible light blocking layer 127 and a second visible light blocking layer 129. The physical thickness of the first high refractive index layer 123 is 5 nm to 10 nm, and specific examples include 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, and 10 nm. The physical thickness of the second high refractive index layer 124 is 5 nm to 20 nm, and specific examples include 5 nm, 8 nm, 10 nm, 15 nm, and 20 nm. In some embodiments, the physical thickness of the second high refractive index layer 124 is 5 nm to 10 nm.

[0074] In FIG2 and FIG3 , the physical thickness of the outermost low refractive index layer 125 is 40 nm to 150 nm, and specific examples include 40 nm, 45 nm, 50 nm, 55 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, 110 nm, 120 nm, 130 nm, 140 nm, 150 nm, etc. In some embodiments, the physical thickness of the outermost low refractive index layer 125 is 50 nm to 100 nm.

[0075] As shown in Figures 4 and 5, the second aspect of the present application provides a laminated glass 10, including the above-mentioned coated glass 100, a second glass plate 210 and an adhesive layer 220, and the second glass plate 210 is arranged on the side surface of the first glass plate 110 away from the low-emissivity layer 120 through the adhesive layer 220.

[0076] In some embodiments, the laminated glass 10 can be installed in a vehicle as a vehicle window glass, specifically, as a sunroof or side window glass. In FIG4 , after the laminated glass 10 is installed in a vehicle, the laminated glass 10 comprises a second glass sheet 210, an adhesive layer 220, a first glass sheet 110, and a low-E laminate 120, stacked sequentially from the exterior of the vehicle to the interior. In FIG5 , after the laminated glass 10 is installed in a vehicle, the laminated glass 10 comprises a second glass sheet 210, an infrared reflective film 230, an adhesive layer 220, a first glass sheet 110, and a low-E laminate 120, stacked sequentially from the exterior of the vehicle to the interior. The second glass sheet 210 is the outer glass sheet of the laminated glass 10, the first glass sheet 110 is the inner glass sheet of the laminated glass 10, the low-E laminate 120 faces the interior of the vehicle, and the infrared reflective film 230 is disposed on the surface of the second glass sheet 210 facing the adhesive layer 220, or on the adhesive layer 220.

[0077] In some embodiments, the visible light transmittance of the laminated glass 10 is ≤10%, making it more suitable for use as a skylight or side window glass without a sunshade. The visible light transmittance of the laminated glass 10 can be, but is not limited to, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, or a range consisting of any two of these values. In some embodiments, the visible light transmittance of the laminated glass 10 is ≤5%.

[0078] In some embodiments, the visible light reflectance of the laminated glass 10 measured from the low-e laminate 120 side of the laminated glass 10 is 6% or less. In some embodiments, the visible light reflectance of the laminated glass 10 is 5% or less. In some embodiments, the visible light reflectance of the laminated glass 10 is 4% or less. In some embodiments, the visible light reflectance of the laminated glass 10 is 3% or less. In some embodiments, the visible light reflectance of the laminated glass 10 is 2% or less.

[0079] In some embodiments, the a value of the reflected color Lab value of the laminated glass 10 measured from the low-e laminate 120 side is between -6 and 0.5, and the b value is between -15 and 0. For example, the a value may be, but is not limited to, a range of -6, -5, -4, -3, -2, -1, 0, 0.5, or a range consisting of any two of these values. The b value may be, but is not limited to, a range of -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, or a range consisting of any two of these values. Within these ranges, the laminated glass 10 has a visually pleasing or even neutral color. In some embodiments, the a value of the reflected color Lab value of the laminated glass 10 measured from the low-e laminate 120 side is between -3 and 0, and the b value is between -10 and 0.

[0080] The first glass plate 110 is transparent glass or tinted glass. The thickness of the first glass plate 110 is 0.7 mm to 2.1 mm, and the visible light transmittance of the first glass plate 110 is 25% to 95%. Clear glass has a total iron content of less than or equal to 0.1%, and a visible light transmittance of 80% to 95%. Tinted glass has a total iron content of greater than or equal to 0.5%, and a visible light transmittance of 25% to 85%. Because the low-emissivity laminate 120 provided herein can significantly reduce the visible light transmittance of the coated glass 100, considering manufacturing cost and difficulty, the first glass plate 110 can be transparent glass or tinted glass with a visible light transmittance greater than or equal to 70%. For example, the first glass plate 110 can be, but is not limited to, 2.1 mm thick clear glass with a visible light transmittance of 89%, 1.6 mm thick green glass with a visible light transmittance of 83%, or 2.1 mm thick green glass with a visible light transmittance of 80%.

[0081] In FIG4 , the laminated glass 10 is not provided with an infrared reflective film. The second glass plate 210 can be transparent glass or tinted glass. In one example, the second glass plate 210 is tinted glass, and the thickness of the second glass plate 210 is between 1.6 mm and 4 mm. The visible light transmittance of the second glass plate 210 is between 10% and 85%. For example, the second glass plate 210 can be, but is not limited to, green glass or gray glass. The thickness of the second glass plate 210 can be, but is not limited to, 1.6 mm, 2.0 mm, 2.4 mm, 2.8 mm, 3.2 mm, 3.6 mm, 4.0 mm, or other values ​​between 1.6 mm and 4 mm. The visible light transmittance of the second glass plate 210 can be, but is not limited to, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 85%, or other values ​​between 10% and 85%. Specifically, the second glass plate 210 can be, but is not limited to, green glass with a thickness of 1.6 mm and a visible light transmittance of 83%, or green glass with a thickness of 2.1 mm and a visible light transmittance of 80%, or gray glass with a thickness of 1.6 mm and a visible light transmittance of 45%, or gray glass with a thickness of 2.1 mm and a visible light transmittance of 28%, etc.

[0082] In Figure 5, the laminated glass 10 is provided with an infrared reflective film 230. The second glass plate 210 can be clear glass or extra-clear glass. The thickness of the second glass plate 210 is between 1.6 mm and 4 mm, and the visible light transmittance of the second glass plate 210 is between 80% and 95%. Clear glass with a total iron content of less than or equal to 0.1% has a visible light transmittance of greater than or equal to 80%. Extra-clear glass with a total iron content of less than or equal to 0.015% has a visible light transmittance of greater than or equal to 91%. Using clear or extra-clear glass with a low total iron content can reduce infrared absorption by the second glass plate 210, further improving the infrared reflection efficiency of the laminated glass 10. This helps further reduce the total solar transmittance of the laminated glass 10, resulting in even better thermal insulation. For example, the thickness of the second glass plate 210 may be, but is not limited to, 1.6 mm, 2.0 mm, 2.4 mm, 2.8 mm, 3.2 mm, 3.6 mm, 4 mm, or any other value between 1.6 mm and 4 mm. The visible light transmittance of the second glass plate 210 may be, but is not limited to, 88%, 89%, 90%, 91%, 92%, 93%, or any other value between 80% and 95%. Specifically, the second glass plate 210 may be, but is not limited to, ultra-clear glass having a thickness of 2.1 mm and a visible light transmittance of 91%.

[0083] Since the low-emissivity laminate 120 provided in the present application can significantly reduce the visible light transmittance of the coated glass 100 , from the perspective of manufacturing cost and difficulty, at least one of the first glass plate 110 and the second glass plate 210 is transparent glass.

[0084] In some embodiments, the adhesive layer 220 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the adhesive layer 220 is 0.38 mm to 2.28 mm. For example, the thickness of the adhesive layer 220 can be, but is not limited to, 0.38 mm, 0.76 mm, 1.14 mm, 1.52 mm, 1.9 mm, 2.28 mm, or other values ​​between 0.38 mm and 2.28 mm.

[0085] The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP). When the bonding layer 220 is a transparent thermoplastic polymer, the visible light transmittance of the transparent thermoplastic polymer is greater than or equal to 80%. For example, the visible light transmittance of the bonding layer 220 can be, but is not limited to, 80%, 85%, 90%, or 95%. When the bonding layer 220 is a colored thermoplastic polymer film, the visible light transmittance of the colored thermoplastic polymer film is 1% to 45%. For example, the visible light transmittance of the bonding layer 220 can be, but is not limited to, 1%, 7%, 12%, 18%, 24%, 29%, 35%, 40%, 42%, 45%, or other values ​​between 1% and 45%. The colored thermoplastic polymer film may be a gray thermoplastic polymer film, a green thermoplastic polymer film, or a blue thermoplastic polymer film.

[0086] Since the low-emissivity laminate 120 provided in the present application can significantly reduce the visible light transmittance of the coated glass 100, from the perspective of manufacturing cost and difficulty, the bonding layer 220 can be a transparent thermoplastic polymer, for example, transparent PVB with a thickness of 0.76 mm and a visible light transmittance of 88%.

[0087] In some embodiments, the infrared reflective film 230 includes at least one metal layer, and the material of the metal layer can be selected from metals or metal alloys such as silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt). In some embodiments, the metal layer is silver or a silver alloy. When the metal layer is a silver alloy, the metal layer can be an alloy of silver and at least one of gold, aluminum, copper, and platinum. It should be noted that, depending on the specific design of the infrared reflective film 230, the number of metal layers can be, but is not limited to, one, two, three, four, five, or more than five. For example, when the metal layer is silver or a silver alloy, the infrared reflective film 230 can be, but is not limited to, a double-silver infrared reflective film, a triple-silver infrared reflective film, a quad-silver infrared reflective film, a five-silver infrared reflective film, etc. It is understood that the infrared reflective film 230 also includes at least two dielectric layers, each metal layer is disposed between two adjacent dielectric layers, and the metal layer and the dielectric layer are deposited separately by a magnetron sputtering process. By optimizing the thickness and materials of the metal and dielectric layers, the infrared reflective film 230 can withstand subsequent high-temperature heat treatment or other bending processes, and the resulting laminated glass 10 can meet the optical and mechanical properties required for vehicle glazing. The number of dielectric layers can be two, five, eight, ten, or even more, and the dielectric layer material can be selected from oxides of Zn, Mg, Sn, Ti, Nb, Zr, Ni, In, Al, Ce, W, Mo, Sb, and Bi, or nitrides, oxynitrides, and mixtures thereof of Si, Al, Zr, Y, Ce, and La. For example, the dielectric layer can be, but is not limited to, zinc stannate, magnesium-doped zinc stannate, zinc oxide, magnesium-doped zinc oxide, zirconium-doped zinc oxide, niobium oxide, bismuth oxide, aluminum-doped zinc oxide, zirconium oxide, titanium oxide, and titanium peroxide.

[0088] In some embodiments, to ensure real-time adjustment of the visible light transmittance of the laminated glass 10, a dimming element is provided between the first glass plate 110 and the second glass plate 210 to accommodate the needs of different scenarios. The dimming element may be, but is not limited to, a PDLC (polymer dispersed liquid crystal) dimming film, an SPD (suspended particle) dimming film, an EC (electrochromic) dimming film, or an LC (dye liquid crystal) dimming film.

[0089] The coated glass and laminated glass provided by the present application have excellent low-radiation effects of heat insulation in summer and thermal insulation in winter. Moreover, the coated glass and laminated glass can maintain a low visible light reflectivity while significantly reducing the visible light transmittance, avoiding the interference of mirror reflections, thereby significantly reducing manufacturing costs and manufacturing difficulty, and increasing the diversity of combination options for laminated glass.

[0090] In a third aspect, the present application further provides a vehicle, comprising:

[0091] body; and

[0092] As described in the second aspect, the laminated glass 10 is installed on a vehicle body.

[0093] In order to make the purpose and advantages of the present application clearer, the coated glass, laminated glass and their effects of the present application are further described in detail below in conjunction with specific examples. It should be understood that the specific examples described here are only used to explain the present application and shall not be used to limit the present application. The following examples do not include other components except for unavoidable impurities unless otherwise specified. The drugs and instruments used in the examples are all conventionally selected in the art unless otherwise specified. The experimental methods for which specific conditions are not specified in the examples shall be implemented according to conventional conditions, such as the conditions described in the literature, books or the methods recommended by the manufacturer.

[0094] Comparative Examples 1 to 5 and Examples 1 to 12

[0095] A 2.1 mm thick clear glass was used as the first glass plate 110. The low-emissivity laminate 120 of Comparative Examples 1-5 and Examples 1-12 was deposited onto the surface of the clear glass via a magnetron sputtering process, yielding the coated glass 100 of Comparative Examples 1-5 and Examples 1-12. In the following examples and comparative examples, 2.1 white glass refers to 2.1 mm thick clear glass, 2.1 green glass refers to 2.1 mm thick green glass, and 2.1 gray glass refers to 2.1 mm thick gray glass.

[0096] The low-emissivity laminates of Comparative Examples 1-2 do not contain a visible light blocking layer, and the low-emissivity laminates 120 of Comparative Examples 3-4 and Examples 1-2 only contain one visible light blocking layer. The specific film structures are shown in Table 1.

[0097] Table 1: Coated glass of Comparative Examples 1 to 4 and Examples 1 to 2

[0098] The low-emissivity stack 120 of Comparative Example 5 and Examples 3 to 7 includes two visible light blocking layers, and their specific film layer structures are shown in Table 2.

[0099] Table 2: Coated glass of Comparative Example 5 and Examples 3 to 7

[0100] The low-emissivity stack 120 of Examples 8 to 12 includes two visible light blocking layers, and the specific film structure thereof is shown in Table 3.

[0101] Table 3: Coated glass of Examples 8 to 12

[0102] The coated glasses 100 of Comparative Examples 1 to 5 and Examples 1 to 12 were subjected to a high-temperature heat treatment at a temperature of at least 560° C., and then their visible light transmittances TL2 were measured. The measurement results are recorded in Table 4.

[0103] Visible light transmittance: Measured and calculated in accordance with ISO 9050 within the wavelength range of 380nm to 780nm.

[0104] Table 4: Visible light transmittance of the coated glasses of Comparative Examples 1 to 5 and Examples 1 to 12

[0105] Tables 1-4 show that the low-emissivity laminates 120 of Comparative Examples 1 and 2 do not include a visible light blocking layer. The TL2 of the coated glass 100 of Comparative Example 1 is close to the visible light transmittance level of 2.1 green glass, while the TL2 of the coated glass 100 of Comparative Example 2 is close to the visible light transmittance level of 2.1 white glass. The low-emissivity laminates 120 of Comparative Examples 1 and 2 cannot significantly reduce the visible light transmittance of the coated glass 100. The low-emissivity laminate 120 of Comparative Example 3 includes a visible light blocking layer with a physical thickness of 9 nm, which can significantly reduce the visible light transmittance of the coated glass 100, but TL2 / TL1 is greater than 0.4.

[0106] In Comparative Examples 4-5 and Examples 1-12, the low-emissivity laminate 120 includes one or two visible light blocking layers, and the total physical thickness of the visible light blocking layers is greater than 10 nm. The low-emissivity laminate 120 of Comparative Examples 4-5 and Examples 1-12 can significantly reduce the visible light transmittance of the coated glass 100, such that the ratio of the visible light transmittance TL2 of the coated glass 100 to the visible light transmittance TL1 of the first glass sheet 110 is less than or equal to 0.4, i.e., TL2 / TL1 ≤ 0.4. In some embodiments, the total physical thickness of the visible light blocking layers is greater than or equal to 15 nm, such that TL2 / TL1 ≤ 0.31, even TL2 / TL1 ≤ 0.25, even more preferably TL2 / TL1 ≤ 0.2, further TL2 / TL1 ≤ 0.15, and even further TL2 / TL1 ≤ 0.1. It can be seen from this that even if 2.1 clear glass is selected as the first glass plate 110 , the visible light transmittance TL2 of the coated glass 100 can be lower than or even much lower than that of 2.1 gray glass.

[0107] Comparative Examples 6 to 9 and Examples 13 to 14

[0108] A 2.1 mm thick transparent glass and a gray glass were prepared as the first glass plate 110 or the second glass plate 210, and a 0.76 mm thick transparent PVB and a gray PVB were prepared as the adhesive layer. The low-emissivity laminate 120 of Comparative Examples 1 to 4 and Examples 1 to 2 was deposited on the surface of the first glass plate 100 by a magnetron sputtering process to obtain the coated glass 100 of Comparative Examples 6 to 9 and Examples 13 to 14. The coated glass 100 and the second glass plate 210 were subjected to a high-temperature heat treatment at a temperature of at least 560° C., and then they were laminated with the adhesive layer and subjected to an automotive glass production process to obtain the laminated glass 10 of Comparative Examples 6 to 9 and Examples 13 to 14.

[0109] The visible light transmittance of the transparent PVB with a thickness of 0.76 mm is 88%, and the visible light transmittance of the gray PVB with a thickness of 0.76 mm is 10%.

[0110] The visible light reflectance RL1 of the coated glass 100 of Comparative Examples 6 to 9 and Examples 13 to 14 after high-temperature heat treatment at at least 560° C. was measured, and the visible light reflectance RL2, reflection color Lab, visible light transmittance, and emissivity of the laminated glass 10 of Comparative Examples 6 to 9 and Examples 13 to 14 were measured, and the measurement results are recorded in Table 5.

[0111] Visible light reflectance RL1 of the coated glass 100: The visible light reflectance RL1 of the coated glass 100 is measured and calculated in accordance with ISO 9050 within a wavelength range of 380 nm to 780 nm from the side of the low-emissivity laminate of the coated glass 100.

[0112] Visible light reflectance RL2 of the laminated glass 10: The visible light reflectance RL2 of the laminated glass 10 is measured and calculated from the low-emissivity laminated layer side of the laminated glass 10 within a wavelength range of 380 nm to 780 nm according to ISO 9050.

[0113] Reflected color Lab of the laminated glass 10: According to the CIE Lab color model, the reflected color L, a, and b of the laminated glass 10 are measured from the low-e laminate side of the laminated glass 10, where L is the brightness value, a is the red-green chromaticity value, and b is the yellow-blue chromaticity value.

[0114] Visible light transmittance of the laminated glass 10 is measured and calculated in accordance with ISO 9050 within a wavelength range of 380 nm to 780 nm.

[0115] The emissivity of the laminated glass 10 is measured from the low-emissivity laminated layer side of the laminated glass 10 using a Fourier transform infrared spectrometer and calculated and calibrated according to standard EN12898.

[0116] Table 5: Laminated glasses of Comparative Examples 6 to 9 and Examples 13 to 14 and their measurement results

[0117] As can be seen from Table 5, the visible light transmittance of the laminated glasses 10 of Comparative Examples 6-9 and Examples 13-14 is less than 10%, and the emissivity is less than 0.25, achieving both low visible light transmittance and low emissivity. However, the adhesive layers in the laminated glasses 10 of Comparative Examples 6-8 all require gray PVB, resulting in high manufacturing costs. The low-emissivity laminate of Comparative Example 9 includes a visible light blocking layer with a physical thickness of 17 nm, resulting in both its visible light reflectance RL1 and the visible light reflectance RL2 of the resulting laminated glass 10 exceeding 6%, causing interference from mirror reflections. The visible light reflectance RL2 of the laminated glass 10 of Comparative Example 6 is greater than 9%, causing severe interference from mirror reflections. The a value of the reflected color Lab of the laminated glass of Comparative Example 8 is greater than 10, causing a severe reddish cast.

[0118] Compared to Comparative Examples 6-9, the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the resulting laminated glass 10 in Examples 13-14 are both less than or equal to 4%. In some examples, the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the resulting laminated glass 10 are both less than or equal to 3%, and the reflected color meets visual comfort requirements. In Examples 13-14, the use of transparent PVB and a single piece of gray glass can achieve a visible light transmittance of less than 10% for the laminated glass, significantly reducing manufacturing costs. Furthermore, Example 14 utilizes tinted glass as the first glass sheet and clear glass as the second glass sheet, facilitating the addition of an infrared reflective film on the surface of the second glass sheet or on the adhesive layer, further enhancing the thermal insulation performance of the laminated glass.

[0119] Comparative Example 10 and Examples 15 to 24

[0120] A 2.1 mm thick transparent glass or gray glass was prepared as the first glass plate 110 or the second glass plate 210, and a 0.76 mm thick transparent PVB was prepared as the adhesive layer. The low-emissivity laminate 120 of Comparative Example 5 and Examples 3 to 12 was deposited on the surface of the first glass plate 100 by a magnetron sputtering process to obtain the coated glass 100 of Comparative Example 10 and Examples 15 to 24. The coated glass 100 and the second glass plate 210 were subjected to a high-temperature heat treatment at a temperature of at least 560° C., and then they were laminated with the adhesive layer and subjected to an automotive glass production process to obtain the laminated glass 10 of Comparative Example 10 and Examples 15 to 24.

[0121] The visible light reflectance RL1 of the coated glass 100 of Comparative Example 10 and Examples 15 to 19 after high-temperature heat treatment at at least 560° C. was measured, and the visible light reflectance RL2, reflection color Lab, visible light transmittance, and emissivity of the laminated glass 10 of Comparative Example 10 and Examples 15 to 19 were measured, and the measurement results are recorded in Table 6.

[0122] Table 6: Laminated glasses of Comparative Example 10 and Examples 15 to 19 and their measurement results

[0123] The visible light reflectance RL1 of the coated glass 100 of Examples 20 to 24 after high-temperature heat treatment at at least 560° C. was measured, and the visible light reflectance RL2, reflection color Lab, visible light transmittance, and emissivity of the laminated glass 10 of Examples 20 to 24 were measured, and the measurement results are recorded in Table 7.

[0124] Table 7: Laminated glasses of Examples 20 to 24 and their measurement results

[0125] It can be seen from Tables 6 and 7 that the visible light transmittance of the laminated glasses 10 of Comparative Example 10 and Examples 15 to 24 is less than 10%. The visible light transmittance of the laminated glasses 10 of some examples is even less than or equal to 5%, and the visible light transmittance of the laminated glasses 10 of some examples is even less than or equal to 3%. In addition, the emissivity of the laminated glasses 10 of Examples 15 to 24 is all less than 0.25, achieving the effects of low visible light transmittance and low emissivity.

[0126] Although the low-emissivity laminate of Comparative Example 5 includes two visible light blocking layers and has a total physical thickness greater than 10 nm, its film layer structure differs from that of Examples 3 to 12. The first visible light blocking layer in the low-emissivity laminate of Comparative Example 5 is located between the transparent conductive oxide layer and the innermost blocking layer, and no low refractive index layer is provided as the outermost layer. As a result, the a value of the reflected color Lab of the resulting laminated glass is greater than 13, resulting in a severe reddish reflected color.

[0127] Compared with Comparative Example 10, the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the laminated glass 10 of Examples 15 to 24 are both less than or equal to 5.5%, wherein the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the laminated glass 10 of some embodiments are both less than or equal to 4%, the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the laminated glass 10 of some embodiments are both less than or equal to 3%, the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the laminated glass 10 of some embodiments are less than or equal to 2%, and the reflected color meets the visual comfort requirements.

[0128] In Examples 15-24, the use of transparent PVB and a single piece of gray glass can achieve a visible light transmittance of less than 10% for laminated glass, significantly reducing manufacturing costs. Furthermore, Example 15 utilizes tinted glass as the first glass sheet and clear glass as the second glass sheet, facilitating the addition of an infrared reflective film on the surface of the second glass sheet or on the adhesive layer, further enhancing the thermal insulation performance of the laminated glass.

[0129] In Examples 15 to 24, the low-emissivity laminate includes two visible light blocking layers. As the total physical thickness of the first visible light blocking layer and the second visible light blocking layer increases, the visible light transmittance of the coated glass 100 of Examples 15 to 24 and the visible light transmittance of the resulting laminated glass 10 decrease accordingly, but their visible light reflectance RL1 and the visible light reflectance RL2 of the resulting laminated glass 10 increase accordingly. To achieve a visible light transmittance of less than or equal to 8% and a visible light reflectance RL2 of less than or equal to 5% for the resulting laminated glass 10, the total physical thickness of the first visible light blocking layer and the second visible light blocking layer is between 15 nm and 35 nm. In some embodiments, to achieve a visible light transmittance of less than or equal to 5% and a visible light reflectance RL2 of less than or equal to 4% for the resulting laminated glass 10, the total physical thickness of the first visible light blocking layer and the second visible light blocking layer is between 20 nm and 30 nm.

[0130] In Examples 15 to 24, the low-emissivity laminate includes two visible light blocking layers, and the ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (0.875 to 3.6):1. Combining Examples 18, 22, 23, and 24, it can be seen that the ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (1 to 3):1, resulting in the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the resulting laminated glass 10 being less than or equal to 3%. In one example, the ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (1 to 2):1, resulting in the visible light reflectivity RL1 of the coated glass 100 and the visible light reflectivity RL2 of the resulting laminated glass 10 being less than or equal to 2%.

[0131] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0132] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A coated glass, wherein: A method for manufacturing a glass substrate comprising: comprising a first glass plate and a low-E stack disposed on at least one surface of the first glass plate, wherein the low-E stack comprises at least one transparent conductive oxide layer and at least one visible light blocking layer, wherein the at least one visible light blocking layer is disposed on a side of the at least one transparent conductive oxide layer away from the first glass plate, and wherein the total physical thickness of the at least one visible light blocking layer is greater than 10 nm; The visible light transmittance of the first glass plate is TL1, the visible light transmittance of the coated glass is TL2, and TL1 and TL2 satisfy TL2 / TL1≤0.

4.

2. The coated glass according to claim 1, wherein: The visible light reflectivity of the coated glass on one side of the low-emissivity laminate is RL1<6%, or RL1≤5%, or RL1≤4%, or RL1≤3%.

3. The coated glass according to any one of claims 1 to 2, wherein: The material of the visible light blocking layer is selected from any one or more of Ni, Cr, Ti, Nb, Mo, Si, Zr and W.

4. The coated glass according to any one of claims 1 to 3, wherein: The coated glass meets at least one of the following conditions: (1) The material of the transparent conductive oxide layer is selected from at least one of doped zinc oxide, indium tin oxide, chromium-doped nickel oxide, fluorine-doped tin oxide and zinc tin oxide, and the doped zinc oxide is zinc oxide doped with at least one element of aluminum, tungsten, hafnium, gallium, yttrium, niobium and neodymium; (2) The thickness of the transparent conductive oxide layer is 80 nm to 500 nm; (3) The emissivity of the coated glass on the side of the low-emissivity laminate is less than 0.

3.

5. The coated glass according to any one of claims 1 to 4, wherein: The low-emissivity stack includes a transparent conductive oxide layer, a visible light blocking layer, a first high refractive index layer, a second high refractive index layer and an outermost low refractive index layer stacked in sequence from the surface of the first glass plate outward, and the physical thickness of the visible light blocking layer is 11nm to 16nm.

6. The coated glass according to any one of claims 1 to 4, wherein: The low-emissivity stack includes a transparent conductive oxide layer, a first visible light blocking layer, an intermediate barrier layer, a second visible light blocking layer, a first high refractive index layer, a second high refractive index layer and an outermost low refractive index layer stacked in sequence from the surface of the first glass plate to the outside, and the total physical thickness of the first visible light blocking layer and the second visible light blocking layer is 11nm to 42nm.

7. The coated glass according to claim 6, wherein: The intermediate barrier layer satisfies at least one of the following conditions: (1) The refractive index of the intermediate barrier layer is greater than or equal to 1.8; (2) The physical thickness of the intermediate barrier layer is 10 nm to 70 nm; (3) The physical thickness of the intermediate barrier layer is greater than the physical thickness of the first visible light blocking layer, and the intermediate The physical thickness of the barrier layer is greater than the physical thickness of the second visible light blocking layer; (4) The material of the intermediate barrier layer is an oxide of at least one element selected from Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi and Ta, or a nitride or oxynitride of at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

8. The coated glass according to any one of claims 6 to 7, wherein: The ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (0.85-4):1, or the ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (1-3):1, or the ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer is (1-2):

1.

9. The coated glass according to any one of claims 5 to 8, wherein: The refractive index of the first high refractive index layer is 1.8 to 2.3, the refractive index of the second high refractive index layer is 2.0 to 2.7, and the refractive index of the second high refractive index layer is greater than that of the first high refractive index layer.

10. The coated glass according to any one of claims 5 to 9, wherein: The material of the first high refractive index layer is selected from the nitride or oxynitride of at least one element among Si, Al, Zr, B, Y, Ce, La and Ti, and the material of the second high refractive index layer is selected from the oxide of at least one element among Zn, Sn, Ti, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi and Ta.

11. The coated glass according to any one of claims 5 to 10, wherein: The refractive index of the outermost low refractive index layer is less than 1.8, and the material of the outermost low refractive index layer is selected from oxides of at least one element selected from Si, Al and B, or fluorides of at least one element selected from Mg, Al and Ba.

12. The coated glass according to any one of claims 5 to 11, wherein: The physical thickness of the first high refractive index layer is 5nm to 40nm, the physical thickness of the second high refractive index layer is 5nm to 50nm, and the physical thickness of the outermost low refractive index layer is 40nm to 150nm.

13. The coated glass according to any one of claims 5 to 12, wherein: The low-e stack further includes an innermost barrier layer, which is located between the surface of the first glass plate and the transparent conductive oxide layer, the physical thickness of the innermost barrier layer is greater than or equal to 5 nm, and the material of the innermost barrier layer is selected from the oxide of at least one element selected from Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi and Ta, or the nitride or nitride oxide of at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

14. A laminated glass, wherein: The coated glass comprises a second glass plate, an adhesive layer and the coated glass according to any one of claims 1 to 13, wherein the second glass plate is arranged on a side of the first glass plate away from the low-emissivity laminate through the adhesive layer.

15. The laminated glass according to claim 14, wherein: The laminated glass meets at least one of the following conditions: (1) The visible light transmittance of the laminated glass is ≤10%, or the visible light transmittance of the laminated glass is ≤5%; (2) the visible light reflectance of the laminated glass measured from the low-e laminated side of the laminated glass is ≤6%, or the visible light reflectance of the laminated glass measured from the low-e laminated side of the laminated glass is ≤4%; (3) The reflective color Lab value of the laminated glass measured from the low-emissivity laminated side of the laminated glass has an a value of -6 to 0.5 and a b value of -15 to 0.

16. The laminated glass according to any one of claims 14 to 15, wherein: The first glass plate is transparent glass or tinted glass, the thickness of the first glass plate is 0.7 mm to 2.1 mm, and the visible light transmittance of the first glass plate is 25% to 95%.

17. The laminated glass according to any one of claims 14 to 16, wherein: The second glass plate is tinted glass, and the visible light transmittance of the second glass plate is 10% to 85%.

18. The laminated glass according to any one of claims 14 to 16, wherein: The second glass plate is transparent glass or extra-transparent glass, the total iron content of the transparent glass is less than or equal to 0.1%, the total iron content of the extra-transparent glass is less than or equal to 0.015%, and the visible light transmittance of the second glass plate is 80% to 95%.

19. The laminated glass according to claim 18, wherein: The laminated glass further comprises an infrared reflective film, which comprises at least one metal layer. The infrared reflective film is arranged on the surface of the second glass plate facing the bonding layer, or is arranged on the bonding layer.

20. The laminated glass according to any one of claims 14 to 19, wherein: The bonding layer is a transparent thermoplastic polymer film, and the visible light transmittance of the transparent thermoplastic polymer film is greater than or equal to 80%.

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