Coated glass and laminated glass

Abstract

The application relates to a coated glass and a laminated glass, the coated glass comprising a first glass sheet and a low-emissivity stack arranged on at least one surface of the first glass sheet, the low-emissivity stack 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 arranged on a side of the at least one transparent conductive oxide layer away from the first glass sheet, the at least one visible light blocking layer having a total physical thickness greater than 10 nm; the first glass sheet having a visible light transmittance TL1, the coated glass having a visible light transmittance TL2, TL1 and TL2 satisfying TL2 / TL1<=0.4. The coated glass can ensure low emissivity and low visible light transmittance, realize low visible light reflectivity, and make the prepared laminated glass have neutral color and lower manufacturing cost.

Description

Technical Field

[0001] This application relates to the field of glass, and in particular to a coated glass and laminated glass. Background Technology

[0002] More and more automakers are looking to eliminate sunroof sunshades to gain more interior space and reduce overall vehicle weight and manufacturing costs. With traditional sunroofs without sunshades, too much light enters the vehicle, affecting not only passengers' visual experience but also increasing interior temperature and thermal comfort. To reduce visible light transmittance and improve heat insulation, traditional techniques use laminated glass with tinted PVB as the bonding layer, and sometimes even incorporate dimming elements. However, this significantly increases the manufacturing cost of sunroofs.

[0003] Furthermore, sunroof glass not only needs low visible light transmittance but also low emissivity. For example, by adding a low-emissivity layer to the interior side of the sunroof, the emissivity on that side can be reduced from around 0.9 to below 0.3, thus achieving thermal insulation. While ordinary low-emissivity layers can reduce the emissivity of the sunroof glass, they also increase the visible light reflectivity on the interior side. This causes passengers and objects inside the vehicle (such as the center console display or other electronic device displays) to be reflected sharply on the sunroof, creating visual interference and discomfort, especially for rear passengers. Even when passengers are using mobile phones or other electronic devices, the content may be clearly displayed on the sunroof, allowing other passengers to observe it and thus compromising their privacy. Summary of the Invention

[0004] Therefore, it is necessary to provide a coated glass that can achieve low visible light reflectance while ensuring low emissivity and low visible light transmittance, as well as produce laminated glass with neutral color and lower manufacturing cost.

[0005] In a first aspect, this application provides a coated glass, including a first glass plate and a low-emissivity stack disposed on at least one surface of the first glass plate, the low-emissivity stack including 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 the 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.

[0006] The visible light transmittance of the first glass plate is TL1, and the visible light transmittance of the coated glass is TL2, wherein TL1 and TL2 satisfy TL2 / TL1≤0.4.

[0007] Wherein, the visible light reflectance RL1 of the coated glass on the low-emissivity laminate side is less than 6%, or RL1 ≤ 5%, or RL1 ≤ 4%, or RL1 ≤ 3%.

[0008] The visible light blocking layer is made of one or more of Ni, Cr, Ti, Nb, Mo, Si, Zr and W.

[0009] The coated glass satisfies at least one of the following conditions:

[0010] (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, wherein the doped zinc oxide is zinc oxide doped with at least one of aluminum, tungsten, hafnium, gallium, yttrium, niobium and neodymium;

[0011] (2) The thickness of the transparent conductive oxide layer is 80nm to 500nm;

[0012] (3) The emissivity of the coated glass on the low-emissivity stack side is less than 0.3.

[0013] The low-emissivity stack comprises 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 sequentially from the surface of the first glass plate outwards. The physical thickness of the visible light blocking layer is 11 nm to 16 nm.

[0014] The low-emissivity stack comprises, from the surface of the first glass plate outwards, 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, wherein the total physical thickness of the first visible light blocking layer and the second visible light blocking layer is 11 nm to 42 nm.

[0015] The intermediate barrier layer satisfies at least one of the following conditions:

[0016] (1) The refractive index of the intermediate barrier layer is greater than or equal to 1.8;

[0017] (2) The physical thickness of the intermediate barrier layer is 10 nm to 70 nm;

[0018] (3) 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.

[0019] (4) The material of the intermediate 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 from the nitride or oxynitride of at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

[0020] 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 (1~3):1, or (1~2):1.

[0021] The first high refractive index layer has a refractive index of 1.8 to 2.3, the second high refractive index layer has a refractive index of 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.

[0022] The material of the first high refractive index layer is selected from at least one nitride or oxide of Si, Al, Zr, B, Y, Ce, La and Ti, and the material of the second high refractive index layer is selected from at least one oxide of Zn, Sn, Ti, Al, Nb, Zr, Ni, Mg, Cr, In, Ce, W, Mo, Sb, Bi and Ta.

[0023] 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 selected from at least one element selected from Mg, Al and Ba.

[0024] The physical thickness of the first high refractive index layer is 5 nm to 40 nm, the physical thickness of the second high refractive index layer is 5 nm to 50 nm, and the physical thickness of the outermost low refractive index layer is 40 nm to 150 nm.

[0025] The low-emissivity 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. 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 selected from at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

[0026] Secondly, this application provides a laminated glass comprising a second glass plate, an adhesive layer, and a coated glass as described above, wherein the second glass plate is disposed on the side surface of the first glass plate away from the low-emissivity laminate via the adhesive layer.

[0027] Wherein, the laminated glass satisfies at least one of the following conditions:

[0028] (1) The visible light transmittance of the laminated glass is ≤10% or ≤5%;

[0029] (2) The visible light reflectance of the laminated glass is ≤6% or ≤4% when measured from the low-emissivity stack side of the laminated glass;

[0030] (3) The reflectance color Lab value of the laminated glass is measured from the low-emissivity stack side, with a value of -6 to 0.5 and a value of -15 to 0.

[0031] The first glass plate is transparent or tinted glass, the thickness of the first glass plate is 0.7mm to 2.1mm, and the visible light transmittance of the first glass plate is 25% to 95%.

[0032] The second glass plate is tinted glass, and its visible light transmittance is 10% to 85%.

[0033] The second glass plate is transparent glass or ultra-transparent glass. The total iron content of the transparent glass is less than or equal to 0.1%, and the total iron content of the ultra-transparent glass is less than or equal to 0.015%. The visible light transmittance of the second glass plate is 80% to 95%.

[0034] The laminated glass further includes an infrared reflective film, which includes at least one metal layer. The infrared reflective film is disposed on the surface of the second glass plate facing the adhesive layer, or on the adhesive layer.

[0035] The adhesive layer is a transparent thermoplastic polymer film with a visible light transmittance of 80% or more.

[0036] The coated glass and laminated glass provided in this application have excellent low-emissivity effects for heat insulation in summer and heat preservation in winter. Moreover, the coated glass and laminated glass can maintain a low visible light reflectivity while significantly reducing visible light transmittance, thus avoiding interference from specular reflections. This can significantly reduce manufacturing costs and manufacturing difficulty, and increase the diversity of combinations of laminated glass. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the coated glass provided in this application;

[0038] Figure 2 Cross-sectional schematic diagrams of low-radiation stacks provided for some embodiments of this application;

[0039] Figure 3 Cross-sectional schematic diagrams of low-radiation stacks provided for other embodiments of this application;

[0040] Figure 4 Schematic diagrams of the structure of laminated glass provided for some embodiments of this application;

[0041] Figure 5 Schematic diagrams of the structure of laminated glass provided for other embodiments of this application;

[0042] Explanation of the labels in the attached drawings:

[0043] 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 Implementation

[0044] To facilitate understanding of this application, a more comprehensive description of the application will be provided below in conjunction with specific embodiments. Preferred embodiments of the application are given in the specific embodiments. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0046] like Figure 1 As shown, the first aspect of this application provides a coated glass 100, which includes a first glass plate 110 and a low-emissivity stack 120 disposed on at least one surface of the first glass plate 110. The low-emissivity stack 120 can be deposited on at least one surface of the first glass plate 110 by processes such as magnetron sputtering to reduce the emissivity of the first glass plate 110. The emissivity of the first glass plate 110 without the low-emissivity stack 120 is about 0.9. The coated glass 100 provided in this application has an emissivity of less than 0.3 on the side with the low-emissivity stack 120, preferably less than or equal to 0.25, or even less than or equal to 0.20, and has excellent low-emissivity effects for heat insulation in summer and heat preservation in winter.

[0047] In some embodiments, the sheet resistance R of the low-emissivity stack 120 is ≤40Ω / □. Preferably, the sheet resistance R is ≤30Ω / □, and more preferably, the sheet resistance R is ≤20Ω / □.

[0048] 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, wherein the total physical thickness of the at least one visible light blocking layer is greater than 10 nm. The transparent conductive oxide (TCO) layer, as the low-emissivity functional layer in the low-emissivity stack 120, is mainly used to reflect mid- and far-infrared radiation to achieve a low-emissivity effect, while the visible light blocking layer is mainly used to absorb visible light to significantly reduce the visible light transmittance of the coated glass 100. Specifically, 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.

[0049] Specifically, the visible light transmittance of the first glass plate 110 is TL1, and the visible light transmittance of the coated glass 10 is TL2. TL1 and TL2 satisfy TL2 / TL1≤0.4, more preferably≤0.35, or≤0.30, or≤0.25, or≤0.20, or≤0.15, or even≤0.10. By adding at least one visible light blocking layer to the low-emissivity laminate 120, this application can obtain a coated glass 100 with significantly reduced visible light transmittance compared to the first glass plate 110 without the low-emissivity laminate 120. This allows for the use of lower-cost transparent glass or tinted glass with higher visible light transmittance as the first glass plate 110, thereby significantly reducing the manufacturing cost and difficulty of the coated glass 100. Furthermore, when the coated glass 10 is further manufactured into a laminated glass with low visible light transmittance, the use of higher-cost tinted glass, tinted adhesive layer, and dimming element can be reduced, thereby significantly reducing the manufacturing cost and difficulty of the laminated glass and increasing the diversity of laminated glass combination options.

[0050] In some embodiments, the visible light reflectance RL1 of the coated glass 100 on the low-emissivity stack side is less than 6%. Adding at least one visible light blocking layer in the low-emissivity stack 120 is also beneficial to reduce the visible light reflectance RL1. Preferably, RL1 ≤ 5%, more preferably RL1 ≤ 4%, and even more preferably RL1 ≤ 3%. This allows the coated glass 100 to maintain a low visible light reflectance while significantly reducing visible light transmittance, thus avoiding interference from specular reflections.

[0051] like Figure 2As shown, the low-emissivity stack 120 has only one visible light blocking layer, specifically comprising, stacked sequentially from the surface of the first glass substrate 110, 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. The visible light blocking layer 126 is in direct contact with the transparent conductive oxide layer 122, and the physical thickness of the visible light blocking layer 126 is preferably 11 nm to 16 nm, specifically examples being 11 nm, 12 nm, 13 nm, 14 nm, 15 nm, 16 nm, etc.

[0052] like Figure 3 As shown, the low-emissivity stack 120 has 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 sequentially from the surface of the first glass substrate 110 outwards. 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 11 nm to 42 nm, specifically 11 nm, 15 nm, 18 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 42 nm, etc.

[0053] In this application, by optimizing the design of the materials and thickness of each layer of the low-emissivity laminate 120, the low-emissivity laminate 120 can withstand subsequent high-temperature heat treatment of at least 560°C or other bending and forming processes, such as the self-weight bending process or pressing bending process in the production of automotive glass, and the optical properties and mechanical properties of the coated glass 100 can meet the standards for use in automotive glass.

[0054] exist Figure 2 and Figure 3In this structure, 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. During high-temperature heat treatment, the innermost barrier layer 121 can prevent alkali metal ions in the first glass substrate 110 from damaging the transparent conductive oxide layer 122, thus improving the heat treatment 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 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 selected from at least one element selected from Si, Al, Zr, B, Y, Ce, La, and Ti. Examples of materials for the innermost barrier layer 121 include Si3N4 and ZrN2. x ZrO x wait.

[0055] The transparent conductive oxide layer 122 is made of doped zinc oxide, indium tin oxide (ITO), chromium-doped nickel oxide, fluorine-doped tin oxide (FTO), and zinc tin oxide (ZnSnO). x At least one of the following, wherein 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, specifically 80 nm, 90 nm, 100 nm, 150 nm, 200 nm, 250 nm, 300 nm, 350 nm, 400 nm, 450 nm, and 500 nm, preferably 100 nm to 300 nm.

[0056] The low-emissivity stack 120 can have one or two visible light blocking layers. The material of the visible light blocking layers can be selected from one or more of Ni, Cr, Ti, Nb, Mo, Si, Zr, and W, specifically examples being 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 are preferably the same, for example, both being nickel-chromium alloy (NiCr); it is understood that the materials of the two visible light blocking layers can also be different, for example, one being nickel-chromium alloy (NiCr) and the other being metallic chromium (Cr).

[0057] In some embodiments, the low-emissivity stack 120 is provided with two visible light blocking layers, for example... Figure 3The first visible light blocking layer 127 and the second visible light blocking layer 129 are configured. The physical thickness of the first visible light blocking layer 127 can be from 5 nm to 25 nm, and the physical thickness of the second visible light blocking layer 129 can be from 3 nm to 20 nm. Considering factors such as visible light transmittance, visible light reflectance, manufacturing cost, and manufacturing difficulty, the total physical thickness of the first visible light blocking layer 127 and the second visible light blocking layer 129 is preferably from 15 nm to 35 nm.

[0058] In other embodiments, the low-emissivity stack 120 is provided with two visible light blocking layers. 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 to 4):1. 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. Preferably, 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, (1 to 3):1, more preferably (1 to 2):1, and even more preferably (1 to 1.5):1. This is beneficial for further reducing the visible light reflectivity of the coated glass 100 on the low-emissivity stack 120 side.

[0059] exist Figure 3 In the low-emissivity stack 120, an intermediate barrier layer 128 is also located between the first visible light blocking layer 127 and the second visible light blocking layer 129. The intermediate barrier layer 128 is optically designed to reduce visible light reflectivity and improve reflected color, and to protect the first visible light blocking layer 127 and the second visible light blocking layer 129 during magnetron sputtering and high-temperature heat treatment. The physical thickness of the intermediate barrier layer 128 is 10 nm to 70 nm. The material of the intermediate barrier layer 128 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 selected from at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti. Preferably, the refractive index of the intermediate barrier layer 128 is greater than or equal to 1.8, and specific examples include Si3N4, TiO2, SnO2, Nb2O5, etc.

[0060] 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. Preferably, 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, such as 20 nm, 25 nm, 30 nm, 40 nm, 45 nm, 50 nm, etc.

[0061] In this application, the transparent conductive oxide layer 122 serves as a low-emissivity functional layer in the low-emissivity stack 120, enabling the low-emissivity stack 120 to exhibit excellent low-emissivity effects, providing heat insulation in summer and heat preservation in winter. The lower the emissivity of the low-emissivity stack 120, the better the low-emissivity effect. Increasing the physical thickness of the transparent conductive oxide layer 122 is beneficial for further reducing emissivity, but this also increases visible light reflectivity and causes the reflected color to deviate from neutral colors, thus preventing the coated glass 100 from meeting the requirements for automotive glass. Therefore, the low-emissivity stack 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, sequentially stacked from the surface of the first glass plate 110, to reduce visible light reflectivity and improve reflected color, and to protect the transparent conductive oxide layer 122, the visible light blocking layer 126, and the second visible light blocking layer 129 during high-temperature heat treatment. Among them, the outermost low-refractive-index layer 125 is the film layer in the low-emissivity stack 120 that is furthest from the surface of the first glass plate 110. For example... Figure 2 As shown, the first high refractive index layer 123 is in direct contact with the visible light blocking layer 126; as Figure 3 As shown, the first high refractive index layer 123 is in direct contact with the second visible light blocking layer 129.

[0062] In some embodiments, the refractive index of the first high refractive index layer 123 is 1.8 to 2.3. Preferably, the material of the first high refractive index layer 123 is selected from at least one nitride or oxide of Si, Al, Zr, B, Y, Ce, La and Ti, and specific examples include Si3N4, AlN, BN, etc.

[0063] In other embodiments, the refractive index of the second high refractive index layer 124 is 2.0 to 2.7. Preferably, 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, etc. More preferably, the refractive index of the second high refractive index layer 124 is greater than the refractive index of the first high refractive index layer 123, which is more conducive to reducing visible light reflectivity and improving reflected color. Further preferably, the refractive index of the second high refractive index layer 124 is at least 0.3, or even at least 0.5, greater than the refractive index 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.

[0064] The refractive index of the outermost low refractive index layer 125 is less than 1.8, preferably less than or equal to 1.7, or even less than or equal to 1.6. The material of the outermost low refractive index layer 125 is selected from the oxide of at least one element selected from Si, Al and B, or the fluoride of at least one element selected from Mg, Al and Ba. Examples of specific materials include SiO2, Al2O3, and MgF2.

[0065] The first high refractive index layer 123 has a physical thickness of 5 nm to 40 nm, the second high refractive index layer 124 has a physical thickness of 5 nm to 50 nm, and the outermost low refractive index layer 125 has a physical thickness of 40 nm to 150 nm.

[0066] exist Figure 2 In this structure, the low-emissivity stack 120 includes only one visible light blocking layer 126. Preferably, the physical thickness of the first high-refractive-index layer 123 is 10 nm to 40 nm, specifically examples of 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, etc., more preferably 15 nm to 30 nm. Preferably, the physical thickness of the second high-refractive-index layer 124 is 20 nm to 50 nm, specifically examples of 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, 50 nm, etc., more preferably 20 nm to 40 nm.

[0067] exist Figure 3 In this structure, the low-emissivity stack 120 includes two visible light blocking layers: a first visible light blocking layer 127 and a second visible light blocking layer 129. Preferably, the physical thickness of the first high-refractive-index layer 123 is 5 nm to 10 nm, specifically examples being 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, 10 nm, etc. Preferably, the physical thickness of the second high-refractive-index layer 124 is 5 nm to 20 nm, specifically examples being 5 nm, 8 nm, 10 nm, 15 nm, 20 nm, etc., more preferably 5 nm to 10 nm.

[0068] exist Figure 2 and Figure 3 In the process, the physical thickness of the outermost low refractive index layer 125 is 40nm to 150nm, specifically for 40nm, 45nm, 50nm, 55nm, 60nm, 70nm, 80nm, 90nm, 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, etc., preferably 50nm to 100nm.

[0069] like Figure 4 and Figure 5 As shown, a second aspect of this application provides a laminated glass 10, including the above-mentioned coated glass 100, a second glass plate 210 and an adhesive layer 220, wherein the second glass plate 210 is disposed on the side surface of the first glass plate 110 away from the low-emissivity laminate 120 via the adhesive layer 220.

[0070] In some embodiments, the laminated glass 10 can be installed in a vehicle as automotive window glass, specifically as a sunroof or side window glass. Figure 4 In the process of installing the laminated glass 10 onto the vehicle, the structure of the laminated glass 10 consists of a second glass panel 210, an adhesive layer 220, a first glass panel 110, and a low-emissivity laminate 120, stacked sequentially from the outside of the vehicle to the inside. Figure 5 In this process, after the laminated glass 10 is installed on the vehicle, the structure from the outside to the inside of the vehicle consists of a second glass panel 210, an infrared reflective film 230, an adhesive layer 220, a first glass panel 110, and a low-emissivity laminate 120, which are stacked sequentially from the outside to the inside of the vehicle. The second glass panel 210 is the outer glass panel of the laminated glass 10, the first glass panel 110 is the inner glass panel of the laminated glass 10, the low-emissivity laminate 120 faces the inside of the vehicle, and the infrared reflective film 230 is disposed on the surface of the second glass panel 210 facing the adhesive layer 220, or on the adhesive layer 220.

[0071] In some embodiments, the visible light transmittance of the laminated glass 10 is ≤10%, making it better suited for use as a skylight or side window without a sunshade. The visible light transmittance of the laminated glass 10 may be, but is not limited to, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, or any combination thereof. Preferably, the visible light transmittance of the laminated glass 10 is ≤5%.

[0072] In some embodiments, the visible light reflectance of the laminated glass 10, measured from the low-emissivity stack 120 side, is ≤6%. Preferably, the visible light reflectance of the laminated glass 10 is ≤5%. More preferably, the visible light reflectance of the laminated glass 10 is ≤4%. Even more preferably, the visible light reflectance of the laminated glass 10 is ≤3%, and most preferably, the visible light reflectance of the laminated glass 10 is ≤2%.

[0073] In some embodiments, the reflectance color Lab value of the laminated glass 10, measured from the low-emissivity stack 120 side, has an a value of -6 to 0.5 and a b value of -15 to 0. For example, the a value can be, but is not limited to, -6, -5, -4, -3, -2, -1, 0, 0.5, or any combination of these values. The b value can be, but is not limited to, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, or any combination of these values. Within these ranges, the laminated glass 10 has a visually comfortable or even neutral color. Preferably, the reflectance color Lab value of the laminated glass 10, measured from the low-emissivity stack 120 side, has an a value of -3 to 0 and a b value of -10 to 0.

[0074] The first glass plate 110 is either transparent or tinted glass, with a thickness of 0.7 mm to 2.1 mm and a visible light transmittance of 25% to 95%. The transparent glass has a total iron content of less than or equal to 0.1% and a visible light transmittance of 80% to 95%; the tinted glass has a total iron content of greater than or equal to 0.5% and a visible light transmittance of 25% to 85%. Since the low-emissivity laminate 120 provided in this application can significantly reduce the visible light transmittance of the coated glass 100, considering manufacturing cost and difficulty, the first glass plate 110 is preferably 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 transparent glass with a visible light transmittance of 89%, or 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%.

[0075] exist Figure 4In this design, the laminated glass 10 does not have an infrared reflective film. The second glass plate 210 can be transparent glass or tinted glass, preferably tinted glass. The thickness of the second glass plate 210 is 1.6 mm to 4 mm, and the visible light transmittance of the second glass plate 210 is 10% to 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, 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%, or 1.6 mm thick gray glass with a visible light transmittance of 45%, or 2.1 mm thick gray glass with a visible light transmittance of 28%, etc.

[0076] exist Figure 5 In this design, the laminated glass 10 is provided with an infrared reflective film 230. The second glass plate 210 is preferably transparent or ultra-transparent glass, and its thickness is 1.6mm to 4mm. The visible light transmittance of the second glass plate 210 is 80% to 95%. The total iron content of the transparent glass is less than or equal to 0.1%, and its visible light transmittance is greater than or equal to 80%. The total iron content of the ultra-transparent glass is less than or equal to 0.015%, and its visible light transmittance is greater than or equal to 91%. By selecting transparent or ultra-transparent glass with a low total iron content, the absorption of infrared rays by the second glass plate 210 can be reduced, further improving the infrared reflection effect of the laminated glass 10. This is beneficial for further reducing the total solar energy transmittance of the laminated glass 10, resulting in a better heat insulation effect. For example, 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 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, 88%, 89%, 90%, 91%, 92%, 93%, or other values ​​between 80% and 95%. Specifically, the second glass plate 210 can be, but is not limited to, ultra-transparent glass with a thickness of 2.1 mm and a visible light transmittance of 91%.

[0077] Since the low-emissivity laminate 120 provided in this application can significantly reduce the visible light transmittance of the coated glass 100, from the perspective of manufacturing cost and manufacturing difficulty, at least one of the first glass plate 110 and the second glass plate 210 is transparent glass.

[0078] 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.

[0079] The thermoplastic polymer film can be made of at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionic polymer (SGP). When the adhesive 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 adhesive layer 220 can be, but is not limited to, 80%, 85%, 90%, or 95%. When the adhesive 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 adhesive 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%. Colored thermoplastic polymer films can be selected from gray, green, or blue thermoplastic polymer films.

[0080] Since the low-emissivity laminate 120 provided in this application can significantly reduce the visible light transmittance of the coated glass 100, from the perspective of manufacturing cost and manufacturing difficulty, the adhesive layer 220 is preferably a transparent thermoplastic polymer, such as a transparent PVB with a thickness of 0.76 mm and a visible light transmittance of 88%.

[0081] In some embodiments, the infrared reflective film 230 includes at least one metal layer, the material of which can be silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), or other metals or metal alloys. Preferably, the metal layer is silver or a silver alloy. When the metal layer is a silver alloy, it is preferably an alloy of silver with 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. 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 quadruple-silver infrared reflective film, a penta-silver infrared reflective film, etc. It is understood that the infrared reflective film 230 also includes at least two dielectric layers, each metal layer being disposed between two adjacent dielectric layers, and the metal layers and dielectric layers are deposited respectively by magnetron sputtering. 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 and forming processes, and the resulting laminated glass 10 meets the standards for vehicle glass in terms of optical and mechanical properties. The number of dielectric layers can be two, five, eight, ten, or even more. The material of the dielectric layers can be selected from oxides of Zn, Mg, Sn, Ti, Nb, Zr, Ni, In, Al, Ce, W, Mo, Sb, and Bi, or from at least one of nitrides, oxynitrides, and mixtures thereof of Si, Al, Zr, Y, Ce, and La. For example, the dielectric layers can be, but are 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.

[0082] In some embodiments, in order to ensure that the visible light transmittance of the laminated glass 10 can be adjusted in real time, a dimming element is preferably provided between the first glass plate 110 and the second glass plate 210 to adapt to 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, an LC (dye liquid crystal) dimming film, etc.

[0083] Thirdly, this application also provides a vehicle, the vehicle comprising:

[0084] Body; and

[0085] The laminated glass 10 as described in the second aspect is installed on the vehicle body.

[0086] To make the objectives and advantages of this application clearer, the coated glass, laminated glass, and their effects described below in conjunction with specific embodiments are further explained in detail. It should be understood that the specific embodiments described herein are only for explaining this application and should not be used to limit this application. Unless otherwise specified, the following embodiments do not include components other than unavoidable impurities. Unless otherwise specified, the drugs and instruments used in the embodiments are conventional choices in the art. Experimental methods in the embodiments that do not specify specific conditions are implemented according to conventional conditions, such as those described in literature, books, or methods recommended by the manufacturer.

[0087] Comparative Examples 1-5 and Examples 1-12

[0088] Using 2.1 mm thick transparent glass as the first glass plate 110, the low-emissivity stack 120 of Comparative Examples 1-5 and Examples 1-12 was deposited onto the surface of the transparent glass by magnetron sputtering to obtain the coated glass 100 of Comparative Examples 1-5 and Examples 1-12. In the following examples and comparative examples, 2.1 clear glass is 2.1 mm thick transparent glass, 2.1 green glass is 2.1 mm thick green glass, and 2.1 gray glass is 2.1 mm thick gray glass.

[0089] Among them, the low-emissivity stacks of Comparative Examples 1-2 do not contain a visible light blocking layer, while the low-emissivity stacks 120 of Comparative Examples 3-4 and Examples 1-2 contain only one visible light blocking layer. Their specific film structures are shown in Table 1.

[0090] Table 1: Coated Glass of Comparative Examples 1-4 and Examples 1-2

[0091]

[0092]

[0093] Among them, the low-emissivity stack 120 of Comparative Example 5 and Examples 3-7 contains two visible light blocking layers, and their specific film structures are shown in Table 2.

[0094] Table 2: Coated Glass of Comparative Example 5 and Examples 3-7

[0095]

[0096] Among them, the low-emissivity stack 120 of Examples 8-12 includes two visible light blocking layers, and its specific film structure is shown in Table 3.

[0097] Table 3: Coated Glass of Examples 8-12

[0098]

[0099] The coated glass 100 of Comparative Examples 1-5 and Examples 1-12 were subjected to high-temperature heat treatment at at least 560°C, and then their visible light transmittance TL2 was measured. The measurement results are recorded in Table 4.

[0100] Visible light transmittance: Measured and calculated according to ISO 9050 within the wavelength range of 380nm to 780nm.

[0101] Table 4: Visible light transmittance of coated glasses from Comparative Examples 1-5 and Examples 1-12

[0102] Total physical thickness of visible light blocking layer Visible light transmittance TL1 / TL2 2.1 Clear Glass 0 TL1 = 90% / 2.1 Green Glass 0 TL=80% / 2.1 Grey Glass 0 TL=28% / Comparative Example 1 0 TL2 = 79.6% 0.88 Comparative Example 2 0 TL2 = 88.2% 0.98 Comparative Example 3 9nm TL2 = 37.4% 0.42 Comparative Example 4 17nm TL2 = 26.6% 0.30 Comparative Example 5 27nm TL2 = 18.6% 0.21 Example 1 13nm TL2 = 30.8% 0.34 Example 2 15nm TL2 = 27.5% 0.31 Example 3 12nm TL2 = 33.1% 0.37 Example 4 12.5nm TL2 = 31.7% 0.35 Example 5 19nm TL2 = 22.4% 0.25 Example 6 23nm TL2 = 15.9% 0.18 Example 7 30nm TL2 = 11.1% 0.12 Example 8 35nm TL2 = 7.4% 0.08 Example 9 42nm TL2 = 5.8% 0.06 Example 10 23nm TL2 = 14.49% 0.16 Example 11 23nm TL2 = 15.03% 0.17 Example 12 23nm TL2 = 13.89% 0.15

[0103] As can be seen from Tables 1-4: the low-emissivity stack 120 of Comparative Examples 1 and 2 does not contain 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, and the TL2 of the coated glass 100 of Comparative Example 2 is close to the visible light transmittance level of 2.1 clear glass. The low-emissivity stack 120 of Comparative Examples 1 and 2 cannot significantly reduce the visible light transmittance of the coated glass 100. The low-emissivity stack 120 of Comparative Example 3 contains 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 > 0.4.

[0104] In Comparative Examples 4-5 and Examples 1-12, the low-emissivity stack 120 includes one or two visible light blocking layers, the total physical thickness of which is greater than 10 nm. The low-emissivity stack 120 in Comparative Examples 4-5 and Examples 1-12 can significantly reduce the visible light transmittance of the coated glass 100, making the ratio of the visible light transmittance TL2 of the coated glass 100 to the visible light transmittance TL1 of the first glass plate 110 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, making TL2 / TL1≤0.31, or even TL2 / TL1≤0.25, or even TL2 / TL1≤0.2, further TL2 / TL1≤0.15, and even further TL2 / TL1≤0.1. Therefore, it can be seen that even if 2.1 clear glass is used as the first glass plate 110, the visible light transmittance TL2 of the coated glass 100 can be less than or even much less than the visible light transmittance of 2.1 gray glass.

[0105] Comparative Examples 6-9 and Examples 13-14

[0106] Prepare 2.1 mm thick transparent glass and gray glass as the first glass plate 110 or the second glass plate 210. Prepare 0.76 mm thick transparent PVB and gray PVB as the adhesive layer. Deposit the low-emissivity stack 120 of Comparative Examples 1-4 and Examples 1-2 onto the surface of the first glass plate 100 by magnetron sputtering to obtain the coated glass 100 of Comparative Examples 6-9 and Examples 13-14. Perform high-temperature heat treatment of the coated glass 100 and the second glass plate 210 at at least 560°C. Then, laminate them with the adhesive layer and process them through automotive glass manufacturing process to obtain the laminated glass 10 of Comparative Examples 6-9 and Examples 13-14.

[0107] The visible light transmittance of 0.76mm thick transparent PVB is 88%, while that of 0.76mm thick gray PVB is 10%.

[0108] The visible light reflectance RL1 of the coated glass 100 of Comparative Examples 6-9 and Examples 13-14 after high-temperature heat treatment at at least 560°C was measured, and the visible light reflectance RL2, reflectance color Lab, visible light transmittance, and emissivity of the laminated glass 10 of Comparative Examples 6-9 and Examples 13-14 were measured, and the measurement results are recorded in Table 5.

[0109] The visible light reflectance RL1 of the coated glass 100 is calculated according to ISO 9050 from the low-emissivity stack side of the coated glass 100 within the wavelength range of 380nm to 780nm.

[0110] Visible light reflectance RL2 of laminated glass 10: The visible light reflectance RL2 of laminated glass 10 is measured and calculated from the low-emissivity stack side of laminated glass 10 in the wavelength range of 380nm to 780nm, according to ISO 9050.

[0111] The reflective color Lab of the laminated glass 10: According to the CIE Lab color model, the reflective colors L, a, and b of the laminated glass 10 are measured from the low-emissivity stack side, where L is the luminance value, a is the red-green chromaticity value, and b is the yellow-blue chromaticity value.

[0112] Visible light transmittance of laminated glass 10: measured and calculated according to ISO 9050 in the wavelength range of 380nm to 780nm.

[0113] Emissivity of laminated glass 10: Measured from the low-emissivity stack side of laminated glass 10, using a Fourier transform infrared spectrometer and calibrated according to standard EN12898;

[0114] Table 5: Laminated glass of Comparative Examples 6-9 and Examples 13-14 and their measurement results

[0115]

[0116]

[0117] As shown in Table 5, the visible light transmittance of the laminated glass 10 in Comparative Examples 6-9 and Examples 13-14 is less than 10%, and the emissivity is less than 0.25, achieving the effects of low visible light transmittance and low emissivity. However, the adhesive layer in the laminated glass 10 of Comparative Examples 6-8 all requires gray PVB, resulting in higher manufacturing costs. The low-emissivity laminate of Comparative Example 9 contains a visible light blocking layer with a physical thickness of 17 nm, causing its visible light reflectance RL1 and the visible light reflectance RL2 of the resulting laminated glass 10 to both be greater than 6%, resulting in the problem of specular reflection interference. Among them, the visible light reflectance RL2 of the laminated glass 10 of Comparative Example 6 is greater than 9%, resulting in a serious problem of specular reflection interference; the a value of the reflection color Lab of the laminated glass of Comparative Example 8 is greater than 10, resulting in a serious reddish tint to the reflection color.

[0118] Compared to Comparative Examples 6-9, the visible light reflectance RL1 of the coated glass 100 and the visible light reflectance RL2 of the laminated glass 10 produced in Examples 13-14 are both less than or equal to 4%, or even less than or equal to 3%, and the reflected color meets the requirements for visual comfort. In Examples 13-14, the visible light transmittance of the laminated glass is less than 10% using only transparent PVB and a single sheet of gray glass, significantly reducing manufacturing costs. Furthermore, Example 14 uses tinted glass as the first glass plate and transparent glass as the second glass plate, which facilitates the addition of an infrared reflective film on the surface of the second glass plate or on the adhesive layer, thereby improving the heat insulation effect of the laminated glass.

[0119] Comparative Example 10 and Examples 15-24

[0120] Prepare 2.1 mm thick transparent glass and gray glass as the first glass plate 110 or the second glass plate 210, and prepare 0.76 mm thick transparent PVB as the adhesive layer. Deposit the low-emissivity stack 120 of Comparative Example 5 and Examples 3-12 onto the surface of the first glass plate 100 by magnetron sputtering to obtain the coated glass 100 of Comparative Example 10 and Examples 15-24. The coated glass 100 and the second glass plate 210 are subjected to high-temperature heat treatment at at least 560°C. Then they are laminated with the adhesive layer and processed by automotive glass manufacturing process to obtain the laminated glass 10 of Comparative Example 10 and Examples 15-24.

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

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

[0123]

[0124] The visible light reflectance RL1 of the coated glass 100 of Examples 20-24 after high-temperature heat treatment at at least 560°C was measured, and the visible light reflectance RL2, reflectance color Lab, visible light transmittance, and emissivity of the laminated glass 10 of Examples 20-24 were measured, and the measurement results were recorded in Table 7.

[0125] Table 7: Laminated Glasses of Examples 20-24 and Their Measurement Results

[0126]

[0127]

[0128] As can be seen from Tables 6 and 7, the visible light transmittance of the laminated glass 10 in Comparative Example 10 and Examples 15-24 is less than 10%, and the visible light transmittance of the laminated glass 10 in some of the examples is even less than or equal to 5%, or even less than or equal to 3%. Furthermore, the emissivity of the laminated glass 10 in Examples 15-24 is less than 0.25, achieving the effects of low visible light transmittance and low radiation.

[0129] Although the low-emissivity stack of Comparative Example 5 includes two visible light blocking layers and has a total physical thickness greater than 10 nm, its film structure is different from that of Examples 3-12. In the low-emissivity stack of Comparative Example 5, the first visible light blocking layer 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. This results in the laminated glass having a reflectance color Lab a value greater than 13, which has the problem of a severely reddish reflectance color.

[0130] Compared with Comparative Example 10, the visible light reflectance RL1 of the coated glass 100 and the visible light reflectance RL2 of the laminated glass 10 prepared in Examples 15-24 are both less than or equal to 5.5%, even less than or equal to 4%, further less than or equal to 3%, and even further less than or equal to 2%, and the reflected color meets the requirements of visual comfort.

[0131] In Examples 15-24, the visible light transmittance of the laminated glass is less than 10% using only transparent PVB and a single sheet of gray glass, significantly reducing manufacturing costs. Furthermore, Example 15 uses tinted glass as the first glass sheet and transparent glass as the second glass sheet, which facilitates the addition of an infrared reflective film on the surface of the second glass sheet or on the adhesive layer, thereby improving the heat insulation effect of the laminated glass.

[0132] In Examples 15-24, the low-emissivity stack includes two visible light blocking layers. As the total physical thickness of the first and second visible light blocking layers increases, the visible light transmittance of the coated glass 100 and the laminated glass 10 of Examples 15-24 decreases accordingly, but their visible light reflectance RL1 and the visible light reflectance RL2 of the laminated glass 10 increase accordingly. To ensure that the visible light transmittance of the laminated glass 10 is less than or equal to 8% and the visible light reflectance RL2 is less than or equal to 5%, the total physical thickness of the first and second visible light blocking layers is preferably 15 nm to 35 nm. Further, to ensure that the visible light transmittance of the laminated glass 10 is less than or equal to 5% and the visible light reflectance RL2 is less than or equal to 4%, the total physical thickness of the first and second visible light blocking layers is preferably 20 nm to 30 nm.

[0133] In Examples 15-24, the low-emissivity stack comprises two visible light blocking layers, with the ratio of the physical thickness of the first visible light blocking layer to the physical thickness of the second visible light blocking layer being (0.875–3.6):1. Referring to Examples 18, 22, 23, and 24, it is preferable 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 (1–3):1, so that the visible light reflectance RL1 of the coated glass 100 and the visible light reflectance RL2 of the laminated glass 10 are both less than or equal to 3%. More preferably, 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, so that the visible light reflectance RL1 of the coated glass 100 and the visible light reflectance RL2 of the laminated glass 10 are both less than or equal to 2%.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0135] The embodiments described above are merely illustrative of several implementation methods of this application, intended to facilitate a detailed understanding of the technical solutions of this application, but should not be construed as limiting the scope of protection of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. It should be understood that technical solutions obtained by those skilled in the art based on the technical solutions provided in this application through logical analysis, reasoning, or limited experimentation are all within the scope of protection of the appended claims. Therefore, the scope of protection of this patent application should be determined by the content of the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A coated glass, characterized in that, The device includes a first glass plate and a low-emissivity stack disposed on at least one surface of the first glass plate. The low-emissivity stack includes at least one transparent conductive oxide layer and at least one visible light blocking layer. 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. 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, and the visible light transmittance of the coated glass is TL2. TL1 and TL2 satisfy TL2 / TL1≤0.

4. The first glass plate is transparent glass or colored glass with a visible light transmittance greater than or equal to 70%. The visible light transmittance of the transparent glass is 80%~95%. The visible light reflectance RL1 of the coated glass on the low-emissivity laminate side is less than 6%; The low-emissivity stack comprises, from the surface of the first glass plate outwards, 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. The total physical thickness of the first and second visible light blocking layers is 11 nm to 42 nm. The refractive index of the intermediate barrier layer is greater than or equal to 1.

8. 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.

2. The coated glass according to claim 1, characterized in that, The visible light reflectance RL1 of the coated glass on the low-emissivity laminate side is ≤5%.

3. The coated glass according to claim 2, characterized in that, The visible light reflectance RL1 of the coated glass on the low-emissivity laminate side is ≤4%.

4. The coated glass according to claim 3, characterized in that, The visible light reflectance RL1 of the coated glass on the low-emissivity laminate side is ≤3%.

5. The coated glass according to claim 1, characterized in that, The material of the visible light blocking layer is selected from one or more of Ni, Cr, Ti, Nb, Mo, Si, Zr and W.

6. The coated glass according to claim 1, characterized in that, The coated glass satisfies 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, wherein the doped zinc oxide is zinc oxide doped with at least one of aluminum, tungsten, hafnium, gallium, yttrium, niobium and neodymium; (2) The thickness of the transparent conductive oxide layer is 80nm~500nm; (3) The emissivity of the coated glass on the low-emissivity stack side is less than 0.

3.

7. The coated glass according to claim 1, characterized in that, The total physical thickness of the first visible light blocking layer and the second visible light blocking layer is 15nm to 35nm.

8. The coated glass according to claim 1, characterized in that, The physical thickness of the first visible light blocking layer is 5nm to 25nm, and the physical thickness of the second visible light blocking layer is 3nm to 20nm.

9. The coated glass according to claim 1 or 8, characterized in that, The intermediate barrier layer satisfies at least one of the following conditions: (1) The physical thickness of the intermediate barrier layer is 10 nm to 70 nm; (2) 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. (3) 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 selected from at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

10. The coated glass according to claim 1 or 8, characterized in 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 (1~3):

1.

11. The coated glass according to claim 10, characterized in 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 (1~2):

1.

12. The coated glass according to claim 1, 7, or 8, characterized in that, The first high refractive index layer has a refractive index of 1.8 to 2.3, and the second high refractive index layer has a refractive index of 2.0 to 2.

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

13. The coated glass according to claim 1, 7, or 8, characterized in that, The physical thickness of the intermediate barrier layer is 20 nm to 50 nm.

14. The coated glass according to claim 1, 7, or 8, characterized in that, 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 selected from at least one element selected from Mg, Al and Ba.

15. The coated glass according to claim 1, 7, or 8, characterized in that, The physical thickness of the first high refractive index layer is 5 nm to 40 nm, the physical thickness of the second high refractive index layer is 5 nm to 50 nm, and the physical thickness of the outermost low refractive index layer is 40 nm to 150 nm.

16. The coated glass according to claim 1, 7, or 8, characterized in that, The low-emissivity 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. 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 selected from at least one element selected from Si, Al, Zr, B, Y, Ce, La and Ti.

17. A laminated glass, characterized in that, It includes a second glass plate, an adhesive layer, and a coated glass as described in any one of claims 1 to 16, wherein the second glass plate is disposed on the surface of the first glass plate away from the low-emissivity stack via the adhesive layer.

18. The laminated glass according to claim 17, characterized in that, The laminated glass satisfies at least one of the following conditions: (1) The visible light transmittance of the laminated glass is ≤10%; (2) The visible light reflectance of the laminated glass, measured from the low-emissivity laminate side, is ≤6%; (3) The reflectance color Lab value of the laminated glass is measured from the low-emissivity stack side, and the value of a is -6 to 0.5 and the value of b is -15 to 0.

19. The laminated glass according to claim 18, characterized in that, The visible light transmittance of the laminated glass is ≤5%.

20. The laminated glass according to claim 18, characterized in that, The visible light reflectance of the laminated glass, measured from the low-emissivity laminate side, is ≤4%.

21. The laminated glass according to claim 17, characterized in that, The thickness of the first glass plate is 0.7mm to 2.1mm.

22. The laminated glass as claimed in claim 17, characterized in that, The second glass plate is tinted glass, and the visible light transmittance of the second glass plate is 10%~85%.

23. The laminated glass as claimed in claim 17, characterized in that, The second glass plate is transparent glass or ultra-transparent glass. The total iron content of the transparent glass is less than or equal to 0.1%, and the total iron content of the ultra-transparent glass is less than or equal to 0.015%. The visible light transmittance of the second glass plate is 80% to 95%.

24. The laminated glass as claimed in claim 23, characterized in that, The laminated glass further includes an infrared reflective film, which includes at least one metal layer. The infrared reflective film is disposed on the surface of the second glass plate facing the adhesive layer, or on the adhesive layer.

25. The laminated glass according to claim 17, characterized in that, The adhesive layer is a transparent thermoplastic polymer film with a visible light transmittance greater than or equal to 80%.

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