Sunroof glass and vehicle

Abstract

The present application provides a sunroof glass and a vehicle. The sunroof glass includes a glass substrate, a metal absorbing layer, and an anti-reflection layer. The glass substrate has an outer surface and an inner surface. The metal absorbing layer and the anti-reflection layer are sequentially stacked on the inner surface along a direction away from the glass substrate. The sunroof glass according to the present application can reduce the visible light reflectance of the surface of the sunroof glass facing the inside of the vehicle, and can improve the visual experience of passengers when looking outside the vehicle from inside the vehicle.

Description

[Technical field]

[0001] REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202210109009.0, filed on January 28, 2022, entitled "Sunroof Glass and Vehicle," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of transportation, and in particular to sunroof glass and vehicles. [Background technology]

[0003] With the continuous development of the vehicle industry, more and more vehicles improve the lighting and appearance of the vehicle by improving the structure of the sunroof glass. However, as the area of ​​the sunroof glass increases, the light entering the vehicle interior becomes excessive, which not only affects the visual experience of the passengers, but also increases the temperature inside the vehicle, affecting the thermal comfort inside the vehicle. In the prior art, for example, colored glass, colored polyvinyl butyral (PVB), or a dimming element is added to reduce the visible light transmittance of the sunroof glass to improve the above problem. However, although the visible light transmittance of the sunroof glass is reduced, the visible light reflectance of the sunroof glass measured inside the vehicle is still high. As a result, an obvious mirror effect is generated on the sunroof glass, and the display of the center console or other electronic devices inside the vehicle is clearly reflected on the sunroof glass, which may disturb the passengers in the rear seats. Summary of the Invention

[0004] The present application provides a sunroof glass and a vehicle, which can reduce the visible light reflectance of the surface of the sunroof glass facing the inside of the vehicle, and improve the visual experience of passengers when looking outside from inside the vehicle.

[0005] In a first aspect, the present application provides a sunroof glass. The sunroof glass includes a glass substrate, a metal absorbing layer, and an anti-reflective layer. The glass substrate has an outer surface and an inner surface. The metal absorbing layer and the anti-reflective layer are sequentially stacked on the inner surface along a direction away from the glass substrate.

[0006] In one possible embodiment, the sunroof glass further comprises a first protective layer, the first protective layer being provided on the inner surface and being located between the inner surface and the metal absorbing layer.

[0007] In one possible embodiment, the sunroof glass further comprises a second protective layer, which is provided on a surface of the anti-reflection layer remote from the metal absorbing layer.

[0008] In one possible embodiment, the antireflection layer comprises at least one stack of a high refractive index layer and a low refractive index layer, the high refractive index layer having a refractive index greater than or equal to 1.7 and the low refractive index layer having a refractive index less than 1.7.

[0009] In one possible embodiment, the sunroof glass further comprises a low-emissivity layer, the low-emissivity layer being disposed between the first protective layer and the metal absorbing layer.

[0010] In one possible embodiment, the low emissivity layer includes one or more of an indium tin oxide (ITO) layer, a fluorine doped tin oxide (FTO) layer, an antimony doped tin oxide (ATO) layer, an aluminum doped zinc oxide (AZO) layer.

[0011] In one possible embodiment, the sunroof glass further comprises a barrier layer, the barrier layer being disposed between the low emissivity layer and the metal absorbing layer.

[0012] In one possible embodiment, the glass substrate is a laminated glass, the laminated glass including an inner glass, an outer glass, and an interlayer connected between the outer glass and the inner glass. The inner glass has a first surface and a second surface opposite the first surface, the first surface being the inner surface. The outer glass has a third surface and a fourth surface opposite the third surface, the fourth surface being the outer surface.

[0013] In one possible embodiment, the glass substrate further comprises an infrared reflective layer, which is provided on the second surface and / or the third surface.

[0014] In one possible embodiment, the visible light transmittance of the sunroof glass is in the range of 1% to 20%. The visible light reflectance of the sunroof glass measured from the inner surface side is 4% or less. In the Lab color space, the reflected color of the sunroof glass measured from the inner surface side has an a value in the range of -6 to 2 and a b value in the range of -12 to 0.

[0015] In one possible embodiment, the visible light transmittance of the outer glass is 70% or more, the visible light transmittance of the inner glass is 70% or more, and the visible light transmittance of the interlayer is in the range of 1% to 30%.

[0016] In one possible embodiment, the visible light transmittance of the outer glass is 50% or less, the visible light transmittance of the inner glass is 50% or less, and the visible light transmittance of the interlayer is 70% or more.

[0017] In one possible embodiment, a light control element is further provided between the second surface and the third surface, the light control element including one or more of a polymer dispersed liquid crystal (PDLC) light control film, a polymer network liquid crystal (PNLC) light control film, a suspended particle device (SPD) light control film, or an electrochromic (EC) light control film.

[0018] In one possible embodiment, the glass substrate is a single-pane tempered glass, and the thickness of the single-pane tempered glass is 5 mm or more.

[0019] In one possible embodiment, the single pane tempered glass is a tinted glass, the total iron content of which, expressed as Fe2O3, is in the range of 0.5% to 2.0%.

[0020] In a second aspect, the present application provides a vehicle, comprising a vehicle body and a sunroof glass as described above, the sunroof glass being connected to the vehicle body. [Brief description of the drawings]

[0021] In order to more clearly describe the technical solution of the present application, the following briefly introduces the drawings required for the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings from these drawings without creative efforts. [Figure 1] FIG. 1 is a schematic diagram showing the structure of a vehicle using a sunroof glass according to an embodiment of the present application. [Diagram 2] FIG. 2 is a schematic diagram showing the structure of one type of sunroof glass according to an embodiment of the present application. [Diagram 3] FIG. 3 is a schematic diagram showing the structure of a second type of sunroof glass according to an embodiment of the present application. [Figure 4] FIG. 4 is a schematic diagram showing three types of structures of the sunroof glass according to the embodiment of the present application. [Diagram 5] FIG. 5 is a schematic diagram showing a fourth type of structure of the sunroof glass according to the embodiment of the present application. [Figure 6] FIG. 6 is a schematic diagram showing five types of structures of sunroof glass according to the embodiment of the present application. [Figure 7] FIG. 7 is a schematic diagram showing the structure of six types of sunroof glass according to the embodiment of the present application. [Figure 8] FIG. 8 is a schematic diagram showing seven types of structures of sunroof glass according to an embodiment of the present application. [Figure 9] FIG. 9 is a schematic diagram showing the structure of eight types of sunroof glass according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, specific embodiments of the present application will be described in more detail with reference to the drawings. Although the drawings show exemplary embodiments of the present application, the present application may be implemented in other ways different from the way described in this specification. Therefore, the present application is not limited by the following embodiments.

[0023] 1 to 9, the embodiment of the present application provides a sunroof glass 10 and a vehicle 100. This can reduce the visible light reflectance of the sunroof glass 10 measured from the inside of the vehicle, thereby eliminating the mirror effect of the sunroof glass when viewed from inside the vehicle, and improving the visual experience of passengers when viewing the outside of the vehicle from inside the vehicle.

[0024] Referring to FIG. 1, a vehicle 100 includes a sunroof glass 10 and a vehicle body 20, and the sunroof glass 10 is connected to the vehicle body 20. Exemplarily, the sunroof glass 10 may be a panoramic sunroof glass. The visible light transmittance of the sunroof glass 10 may be 30% or less, preferably 20% or less, and specific examples include 19%, 18%, 17%, 16%, 15%, 14%, 13%, 12%, 11%, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, and 1%. The visible light reflectance of the sunroof glass 10 measured from the inside of the vehicle is 4% or less, preferably 3% or less, and more preferably 2% or less.

[0025] 2, the sunroof glass 10 includes a glass substrate 11, a metal absorption layer 12, and an anti-reflection layer 13. The metal absorption layer 12 and the anti-reflection layer 13 are laminated on the glass substrate 11 in this order.

[0026] 2 merely illustrates the connection relationship between the glass substrate 11, the metal absorption layer 12, and the anti-reflection layer 13 as an example, and does not specifically limit the connection position, specific structure, and number of each device. In addition, the exemplary structure of the embodiment of the present application does not specifically limit the sunroof glass 10. In other embodiments of the present application, the sunroof glass 10 may include more or less components than those shown in the drawing, may combine certain components, may divide certain components, or may have a different component arrangement. The components illustrated in the drawings may be implemented as hardware, software, or a combination of software and hardware.

[0027] 2, the glass substrate 11 has an inner surface 11a and an outer surface 11b provided opposite the inner surface 11a. The inner surface 11a is the surface of the glass substrate 11 facing the inside of the vehicle, and the outer surface 11b is the surface of the glass substrate 11 facing the outside of the vehicle. A metal absorbing layer 12 and an anti-reflection layer 13 are laminated in this order on the inner surface 11a along the direction away from the glass substrate 11.

[0028] The glass substrate 11 may be transparent or colored. The material of the glass substrate 11 may be soda-lime-silica glass, borosilicate glass, aluminosilicate glass, or organic glass. The organic glass may be, for example, poly methyl methacrylate (PMMA) or polycarbonate (PC).

[0029] The glass substrate 11 used as the sunroof glass 10 usually has a curved shape. The shape of the glass substrate 11 is not limited to the shapes described above, and may be any shape as long as it satisfies the requirements for use of the sunroof glass 10. For example, the glass substrate 11 may be flat. In the embodiment of the present application, there is no strict requirement for the shape of the glass substrate 11.

[0030] The glass substrate 11 may be a single-layer tempered glass. The thickness of the single-layer tempered glass is 5 mm or more, and may be, for example, 5.1 mm, 5.5 mm, 5.8 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, etc. The single-layer tempered glass may be a colored glass, and the colored glass has a total iron content expressed as Fe2O3 in the range of 0.5% to 2.0%, and examples of the colored glass include green glass, blue glass, and gray glass.

[0031] 2, the glass substrate 11 may be a laminated glass. The laminated glass includes an inner glass 111, an outer glass 112, and an intermediate layer 113 connected between the outer glass 112 and the inner glass 111. The inner glass 111 has a first surface 1111 and a second surface 1112 facing the first surface 1111, the first surface 1111 being the inner surface 11a of the glass substrate 11. The outer glass 112 has a third surface 1121 and a fourth surface 1122 facing the third surface 1121, the fourth surface 1122 being the outer surface 11b of the glass substrate 11.

[0032] As can be seen, the intermediate layer 113 is used to connect the outer glass 112 and the inner glass 111, so that the entire sunroof glass 10 has a laminated structure. This improves the strength of the glass body, making the glass body less likely to break and providing better impact resistance than single-layer glass. The improved impact resistance can improve the safety performance of the vehicle, make the glass body less likely to break, and reduce maintenance costs.

[0033] The sunroof glass 10 further includes a light control element (not shown). The light control element is provided between the second surface and the third surface. The light control element can include one or more of a polymer dispersed liquid crystal (PDLC) light control film, a polymer network liquid crystal (PNLC) light control film, a suspended particle device (SPD) light control film, or an electrochromic (EC) light control film.

[0034] 3, in one possible embodiment, the glass substrate 11 may further include an infrared reflective layer 14. The infrared reflective layer 14 is provided on the second surface 1112 of the inner glass 111 and / or the third surface 1121 of the outer glass 112.

[0035] As can be seen, an infrared reflective layer 14 is provided between the outer glass 112 and the intermediate layer 113 and / or between the inner glass 111 and the intermediate layer 113. The infrared reflective layer 14 includes at least one metallic functional layer and a plurality of dielectric layers. The metallic functional layer may be, for example, a gold layer, a silver layer, a copper layer, a silver-copper alloy layer, a silver-indium alloy layer, a silver-gold alloy layer, etc. More specifically, the infrared reflective layer 14 may be a single silver coating (including one silver layer), a double silver coating (including two silver layers), a triple silver coating (including three silver layers), a quadruple silver coating (including four silver layers), etc. The infrared reflective layer 14 can reflect most of the infrared rays in the wavelength range of 780 nm to 2500 nm, so that the sunroof glass 10 has solar radiation shielding properties and heat insulation properties. As a result, the thermal comfort inside the vehicle can be improved, and the sunroof glass 10 can adapt to the development trend of panoramic glass.

[0036] In one possible embodiment, the outer glass 112 is arranged parallel to the inner glass 111. In this arrangement, the intermediate layer 113 has a uniform thickness.

[0037] In another possible embodiment, the extension direction of the outer glass 112 crosses the extension direction of the inner glass 111. In this arrangement, the intermediate layer 113 can be arranged in a structure in which the thickness is not uniform, but gradually changes. For example, the intermediate layer 113 can be wedge-shaped.

[0038] As can be understood from the above description, the thickness of the intermediate layer 113 can be flexibly adjusted according to the actual application scenarios of the sunroof glass 10, which is advantageous for adapting to the application demands of the sunroof glass 10 in multiple scenarios.

[0039] For example, both the inner glass 111 and the outer glass 112 may be transparent glass (normal clear glass) having a thickness of 2.1 mm. Specifically, the requirement is met if the thickness of both the inner glass 111 and the outer glass 112 are within a range of 0.7 mm to 4.0 mm (including 0.7 mm and 4.0 mm). In order to meet the requirement of weight reduction, it is preferable that the thickness of the outer glass 112 is 1.6 mm to 4.0 mm, the thickness of the inner glass 111 is 0.7 mm to 2.1 mm, and the thickness of the outer glass 112 is equal to or greater than the thickness of the inner glass 111. The visible light transmittance of the outer glass 112 is 70% or more, preferably 80% or more, and further 90% or more. The visible light transmittance of the inner glass 111 is 70% or more, preferably 80% or more, and further 90% or more. By using normal clear glass as the inner glass 111 and the outer glass 112, the cost of the product can be significantly reduced and the market competitiveness of the product can be improved.

[0040] In one possible embodiment, the visible light transmittance of the sunroof glass 10 is adjusted by selecting an intermediate layer 113 having a different visible light transmittance. Preferably, the visible light transmittance of the intermediate layer 113 is 1% to 30%, such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, etc. The material of the intermediate layer 113 can be polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), ionic polymer membrane (SentryGlas(R) Plus (SGP)), etc.

[0041] In another possible embodiment, the visible light transmittance of the outer glass 112 is 50% or less, preferably 40% or less, more preferably 30% or less, or even 20% or less. The visible light transmittance of the inner glass 111 is 50% or less, preferably 40% or less, more preferably 30% or less, or even 20% or less. The visible light transmittance of the intermediate layer 113 is 70% or more, and as a specific example, it can be 70% or more, 75% or more, 80% or more, 85% or more, or 90% or more. By utilizing a normal transparent intermediate layer such as a standard transparent PVB, the product cost can be significantly reduced and the market competitiveness of the product can be improved.

[0042] Referring to FIG. 2, the metal absorbing layer 12 is connected to the first surface 1111 of the inner glass 111. As can be seen, by providing the metal absorbing layer 12 on the glass substrate 11, the following can be realized. On the one hand, the metal absorbing layer 12 can adjust the absorption of light to improve the radiation performance and appearance color of the sunroof glass 10. On the other hand, the metal absorbing layer 12 can absorb visible light to a certain extent, reduce the visible light reflectance of the inner surface 11a of the glass substrate 11 toward the inside of the vehicle, allow the user to better see the outside through the sunroof, reduce the impact of the light reflected by the inner surface 11a of the glass substrate 11 on the user in the vehicle, and improve the user's experience.

[0043] Exemplarily, the metal absorbing layer 12 may be a metal coating. The material of the metal absorbing layer 12 may be one or a combination of Ni, Cr, Fe, Ti, Mo, Zr, Si, Nb, etc. The thickness of the metal absorbing layer 12 may be 1 nm to 15 nm, preferably 3 nm to 12 nm, and more preferably 5 to 10 nm. The metal absorbing layer 12 having an appropriate thickness not only plays a role in absorbing visible light, but also cooperates with the anti-reflection layer 13 to further reduce the visible light reflectance of the glass substrate 11.

[0044] 2, the anti-reflection layer 13 is provided on one side of the metal absorbing layer 12 away from the inner glass 111. For example, the anti-reflection layer 13 can be coated by a magnetron sputtering process. As can be seen, the anti-reflection layer 13 can reduce the visible light reflectance of the glass substrate 11. The cooperation between the anti-reflection layer 13 and the metal absorbing layer 12 can further reduce the visible light reflectance of the inner surface 11a of the glass substrate 11, so that the sunroof glass 10 can meet the application trend of panoramic glass.

[0045] In addition, the cooperation between the anti-reflection layer 13 and the metal absorption layer 12 can significantly reduce the visible light reflectance of the inner surface 11a of the glass substrate 11, thereby eliminating the mirror effect of the sunroof glass 10 when viewed from inside the vehicle, and improving the user experience.

[0046] In an embodiment of the present application, the anti-reflection layer 13 includes at least one stack of a high refractive index layer 131 and a low refractive index layer 132. The high refractive index layer 131 is connected to the metal absorbing layer 12, and the low refractive index layer 132 is connected to the high refractive index layer 131 and is spaced apart from the metal absorbing layer 12. The refractive index of the high refractive index layer 131 is 1.7 or more, and the refractive index of the low refractive index layer 132 is less than 1.7.

[0047] The laminate consisting of the high refractive index layer 131 and the low refractive index layer 132 means that the high refractive index layer 131 and the low refractive index layer 132 are laminated in order. For example, one laminate consisting of the high refractive index layer 131 and the low refractive index layer 132 includes, in order, the high refractive index layer 131 and the low refractive index layer 132. Two laminates consisting of the high refractive index layer 131 and the low refractive index layer 132 include, in order, the high refractive index layer 131, the low refractive index layer 132, the high refractive index layer 131, and the low refractive index layer 132. Three laminates consisting of the high refractive index layer 131 and the low refractive index layer 132 include, in order, the high refractive index layer 131, the low refractive index layer 132, the high refractive index layer 131, the low refractive index layer 132. The thickness of the high refractive index layer 131 can be in the range of 1 nm to 70 nm (including 1 nm and 70 nm). In a specific application scenario, the high refractive index layer 131 can further include at least two high refractive index sub-layers. For example, a laminate consisting of a high refractive index layer 131 and a low refractive index layer 132 may specifically include, in order, a first high refractive index sublayer, a second high refractive index sublayer, and a low refractive index layer 132. The refractive index of the first high refractive index sublayer is smaller than the refractive index of the second high refractive index sublayer. The thickness of the low refractive index layer 132 may be in the range of 20 nm to 150 nm (inclusive).

[0048] Exemplarily, the refractive index of the high refractive index layer 131 may be in the range of 1.7 to 2.5 (inclusive). The refractive index of the low refractive index layer 132 may be in the range of 1.4 to 1.69 (inclusive). The material of the high refractive index layer 131 may be an oxide or alloy oxide of Zn, Sn, Nb, Ti, Ni, Cr, or Ta, for example, zinc tin oxide (ZnSnO x ), titanium dioxide (TiO x ), niobium oxide (NbO x Alternatively, the material of the high refractive index layer 131 may be a nitride or alloy nitride of Si, Zr, or Al, such as silicon nitride (SiN x ), silicon-based aluminum nitride (SiAlN x ), silicon-based zirconium nitride (SiZrN x The material of the low refractive index layer 132 may include oxides or alloy oxides of Si, Zr, and Al, such as silicon oxide (SiO x ), silicon-based aluminum oxide (SiAlO x ), silicon-based zirconium oxide (SiZrO x ) etc. The value of x is determined based on the stoichiometry, substoichiometry or superstoichiometry method in the magnetron sputtering process.

[0049] 2 to 9, the anti-reflection layer 13 may include one stack of the high refractive index layer 131 and the low refractive index layer 132, or may include at least two stacks of the high refractive index layer 131 and the low refractive index layer 132. Specifically, the anti-reflection layer 13 may include two stacks, three stacks, or four or more stacks. Considering obvious advantages in process manufacturing and cost, the anti-reflection layer 13 preferably includes only one stack of the high refractive index layer 131 and the low refractive index layer 132. In the embodiment of the present application, by cooperation between the metal absorption layer 12 and the anti-reflection layer 13, the anti-reflection layer 13 including only one stack can achieve the same level of anti-reflection effect as the conventional anti-reflection layer including two stacks, three stacks, or even four stacks.

[0050] In a specific application scenario, as shown in Figures 2, 3, 6, 7, 8, and 9, the antireflection layer 13 includes only one laminate consisting of a high refractive index layer 131 and a low refractive index layer 132, and in the direction from the inner surface 11a of the glass substrate 11 toward the inside of the vehicle, the laminate is provided in a structure of the high refractive index layer 131-the low refractive index layer 132. Specifically, along the direction away from the inner surface 11a, the antireflection layer 13 includes the high refractive index layer 131 and the low refractive index layer 132, which are laminated in order on one side of the metal absorption layer 12 away from the inner glass 111.

[0051] In another specific application scenario, the high refractive index layer 131 in the anti-reflection layer 13 includes two high refractive index sub-layers, and the anti-reflection layer 13 is provided in a structure of a first high refractive index sub-layer 1311-a second high refractive index sub-layer 1312-a low refractive index layer 132 in a direction away from the inner surface 11a of the inner glass 111. Specifically, as shown in FIG. 4, along the direction away from the inner surface 11a of the inner glass 111, the stacked structure includes a first high refractive index sub-layer 1311, a second high refractive index sub-layer 1312, and a low refractive index layer 132 stacked in order on one side of the metal absorption layer 12 away from the inner glass 111. The refractive index of the first high refractive index sub-layer 1311 is smaller than that of the second high refractive index sub-layer 1312.

[0052] In yet another specific application scenario, the anti-reflection layer 13 includes two laminates each consisting of a high refractive index layer 131 and a low refractive index layer 132, and the two laminates have a structure in which the high refractive index layer 131-the low refractive index layer 132 are periodically alternately arranged along the direction away from the inner surface 11a of the inner glass 111, and the outermost layer (i.e., the layer farthest from the first surface 1111 of the inner glass 111) is the low refractive index layer 132. Specifically, as shown in FIG. 5, the anti-reflection layer 13 includes a first high refractive index layer 131a, a first low refractive index layer 132a, a second high refractive index layer 131b, and a second low refractive index layer 132b, which are laminated in order on the inner glass 111. The material of the first high refractive index layer 131a and the material of the second high refractive index layer 131b may be the same or different. The thickness of the first high refractive index layer 131a and the thickness of the second high refractive index layer 131b may be the same or different. The material of the first low refractive index layer 132a and the material of the second low refractive index layer 132b may be the same or different. The thickness of the first low refractive index layer 132a and the thickness of the second low refractive index layer 132b may be the same or different.

[0053] In the embodiment of the present application, by selecting an appropriate glass substrate 11 and adjusting the material and thickness of the metal absorbing layer 12 and the material and thickness of the anti-reflection layer 13, the reflection color of the sunroof glass 10 measured from the inner surface 11a side has an a value in the range of -6 to 2 (including -6 and 2) and a b value in the range of -12 to 0 (including -12 and 0) in the Lab color space. As a result, the color of the sunroof glass 10 when viewed from the inside of the vehicle is a preferable neutral color, providing a better visual effect to the passengers inside the vehicle.

[0054] In one possible embodiment, as shown in Fig. 6, the sunroof glass 10 can further include a first protective layer 15. The first protective layer 15 is directly provided on the first surface 1111 of the inner glass 111, that is, the first protective layer 15 is provided between the inner surface 11a of the glass substrate 11 and the metal absorbing layer 12. During the bending process of the inner glass 111 at a high temperature of at least 500°C, the first protective layer 15 can prevent the damage and oxidation of the metal absorbing layer 12 caused by the diffusion of alkali metal ions and oxygen through the surface of the inner glass 111.

[0055] Exemplarily, the thickness of the first protective layer 15 may be 5 nm or more. The material of the first protective layer 15 may include an oxide or an alloy oxide of Zn, Sn, Ti, Si, Al, Nb, Zr, Ni, Mg, Cr, Ta, or the like, or may include a nitride or an alloy oxynitride of Si, Al, Zr, B, Ti, or the like. An alloy oxide is an oxide of at least two elements. An alloy oxynitride is an oxynitride of at least two elements.

[0056] In another possible embodiment, as shown in Fig. 7, the sunroof glass 10 can further include a second protective layer 16. The second protective layer 16 is provided on one side of the anti-reflection layer 13 away from the metal absorbing layer 12, i.e., the second protective layer 16 is provided on the outermost layer of the coating structure of the sunroof glass 10. The second protective layer 16 contributes to further improving the overall mechanical and thermal stability of the coating.

[0057] Exemplarily, the material of the second protective layer 16 is a nitride or an alloy oxynitride of Si, Al, Zr, Ti, B, Ni, etc., such as SiN x , SiAlN x , SiZrN x etc. The thickness of the second protective layer 16 is 3 nm or more. In consideration of the influence of the second protective layer 16 on the antireflection layer 13, the thickness of the second protective layer 16 is preferably 30 nm or less. More preferably, the thickness of the second protective layer 16 is 5 nm to 20 nm.

[0058] In yet another possible embodiment, as shown in Fig. 8, the sunroof glass 10 can further include a first protective layer 15 and a second protective layer 16. The first protective layer 15 is provided between the metal absorbing layer 12 and the inner glass 111, and the second protective layer 16 is provided on the surface of the anti-reflection layer 13 away from the metal absorbing layer 12.

[0059] In addition, the color of the sunroof glass 10 can be adjusted not only by adjusting the material and thickness of the metal absorbing layer 123 and the material and thickness of the anti-reflection layer 13, but also by adjusting the material and thickness of the first protective layer 15 and the material and thickness of the second protective layer 16. The embodiment of the present application is not strictly limited thereto.

[0060] Referring to FIG. 9, in the embodiment of the present application, the sunroof glass 10 may further include a low-emissivity layer 17. The low-emissivity layer 17 is provided between the first protective layer 15 and the metal absorbing layer 12. The low-emissivity layer 17 is used to reduce the emissivity of the sunroof glass 10 measured from the inner surface 11a side. The emissivity of the sunroof glass 10 measured from the inner surface 11a side is in the range of 0.01 to 0.25 (including 0.01 and 0.25). Thereby, the heat transfer between the inside and the outside of the vehicle can be better blocked. The low-emissivity layer 17 includes one or more of an indium tin oxide (ITO) layer, a fluorine-doped tin oxide (FTO) layer, an antimony tin oxide (ATO) layer, and an aluminum-doped zinc oxide (AZO) layer. A barrier layer 18 is further provided between the low-emissivity layer 17 and the metal absorption layer 12. On the first surface 1111, a first protective layer 15, a low-emissivity layer 17, a barrier layer 18, a metal absorption layer 12, a high refractive index layer 131, a low refractive index layer 132, and a second protective layer 16 may be provided in this order.

[0061] Specifically, the first protective layer 15 can be directly provided on the first surface 1111. The low-emissivity layer 17 is provided on one side of the first protective layer 15 away from the inner glass 111. The barrier layer 18 is provided on one side of the low-emissivity layer 17 away from the first protective layer 15. As can be seen, providing the first protective layer 15 on the surface of the inner glass 111 can block alkali metal ions and the like on the inner glass 111 from entering the coating structure, and can protect the optical layer between the first protective layer 15 and the second protective layer 16. Providing the low-emissivity layer 17 on one side of the first protective layer 15 away from the glass substrate 11 can allow the sunroof glass 10 to have an excellent low-emissivity effect. In addition, the barrier layer 18 is provided on one side of the low-emissivity layer 17 away from the first protective layer 15. Since the barrier layer 18 is located between the metal absorbing layer 12 and the low emissivity layer 17, it is possible to prevent the performance of the metal absorbing layer 12 or the low emissivity layer 17 from being deteriorated or even disabled due to the mutual influence between the metal absorbing layer 12 and the low emissivity layer 17.

[0062] The present application further provides a manufacturing method for the sunroof glass 10. For the specific structure of the sunroof glass 10, reference may be made to Figs. 1 to 9 and the above description. And, the improvement of the sunroof glass 10 described in the following method may be applied to the above description of the sunroof glass 10, unless there is any contradiction. The method includes the following contents.

[0063] S100: Provide an inner glass 111. The inner glass 111 includes a first surface 1111 and a second surface 1112 opposite the first surface 1111.

[0064] S200: On the first surface 1111 of the inner glass 111, the metal absorbing layer 12 and the anti-reflection layer 13 are laminated in this order.

[0065] S300: Manufacture a glass substrate 11. The glass substrate 11 includes an inner glass 111, an outer glass 112, and an intermediate layer 113 connected between the inner glass 111 and the outer glass 112. An inner surface 11a of the glass substrate 11 is a first surface 1111 of the inner glass 111.

[0066] The specific steps of S200 and S300 will be described below.

[0067] S200: On the first surface 1111 of the inner glass 111, the metal absorbing layer 12 and the anti-reflection layer 13 are laminated in this order.

[0068] First, a metal absorbing layer 12 and an anti-reflective layer 13 are deposited on the first surface 1111 by a magnetron sputtering process.

[0069] For example, the first protective layer 15, the low-emission layer 17, the barrier layer 18, the metal absorption layer 12, the high refractive index layer 131, the low refractive index layer 132, and the second protective layer 16 are sequentially deposited on the first surface 1111 of the inner glass 111 by a magnetron sputtering process.

[0070] S300: The glass substrate 11 is manufactured.

[0071] The glass substrate 11 includes an inner glass 111, an outer glass 112, and an intermediate layer 113 connected between the inner glass 111 and the outer glass 112. The inner surface 11a of the glass substrate 11 is the first surface 1111 of the inner glass 111. After depositing the metal absorption layer 12 and the anti-reflection layer 13 on the inner glass 111 by the magnetron sputtering process, the first protective layer 15, the low emissivity layer 17, the barrier layer 18, the second protective layer 16, etc. may be further deposited, and the infrared reflective layer 14 may be further deposited on the third surface 1121 of the outer glass 112, and the outer glass 112 and the inner glass 111 may be subjected to a bending forming process at a high temperature. The bending forming process at a high temperature may be performed in the range of 550°C to 700°C (including 550°C and 700°C). Then, the outer glass 112 and the inner glass 11 are connected by the intermediate layer 113. The visible light transmittance of the intermediate layer 113 may be in the range of 1% to 30%. Through the manufacturing process of vehicle glass, the outer glass 112, the inner glass 111, and the intermediate layer 113 form a laminated glass structure.

[0072] In addition, the present application provides six examples and four comparative examples to analyze and discuss the performance of the sunroof glass 10.

[0073] <Example 1>

[0074] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. A first protective layer 15 (a Si3N4 layer with a thickness of 10 nm), a metal absorbing layer 12 (a NiCr layer with a thickness of 6.5 nm), a high refractive index layer (a TiO2 layer with a thickness of 26 nm) and a low refractive index layer (a SiO2 layer with a thickness of 36 nm) are sequentially stacked on the first surface 1111 of the inner glass 111 by magnetron sputtering. The TiO2 layer with a thickness of 26 nm and the SiO2 layer with a thickness of 36 nm constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at a high temperature. Next, a gray PVB with a thickness of 0.76 mm and a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed by a manufacturing process of vehicle glass.

[0075] <Example 2>

[0076] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. A metal absorption layer 12 (a 6.5 nm thick NiCr layer), a high refractive index layer (a 26 nm thick TiO2 layer), a low refractive index layer (a 32 nm thick SiO2 layer) and a second protective layer 16 (a 15 nm thick Si3N4 layer) are sequentially stacked on the first surface 1111 of the inner glass 111 by magnetron sputtering. The 26 nm thick TiO2 layer and the 32 nm thick SiO2 layer constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at high temperature. Next, a 0.76 mm thick PVB with a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed by a manufacturing process of vehicle glass.

[0077] <Example 3>

[0078] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. A first protective layer 15 (a Si3N4 layer with a thickness of 10 nm), a metal absorbing layer 12 (a NiCr layer with a thickness of 6.5 nm), a high refractive index layer (a TiO2 layer with a thickness of 26 nm), a low refractive index layer (a SiO2 layer with a thickness of 34 nm), and a second protective layer 16 (a Si3N4 layer with a thickness of 15 nm) are sequentially stacked on the first surface 1111 of the inner glass 111 by magnetron sputtering. The TiO2 layer with a thickness of 26 nm and the SiO2 layer with a thickness of 34 nm constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at a high temperature. Next, a PVB with a thickness of 0.76 mm and a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed by a manufacturing process of vehicle glass.

[0079] <Example 4>

[0080] Both the outer glass 112 and the inner glass 111 are ordinary clear glass with a thickness of 2.1 mm. A first protective layer 15 (ZnSnO x layer), a metal absorption layer 12 (a 6.5 nm thick NiCr layer), a high refractive index layer (a 26 nm thick TiO2 layer), a low refractive index layer (a 34 nm thick SiO2 layer), and a second protective layer 16 (a 15 nm thick Si3N4 layer) are sequentially stacked. The 26 nm thick TiO2 layer and the 34 nm thick SiO2 layer constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at high temperature. Next, a 0.76 mm thick PVB with a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed through the manufacturing process of vehicle glass.

[0081] <Example 5>

[0082] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. By magnetron sputtering, the first protective layer 15 (Si3N4 layer with a thickness of 10 nm), the low emissivity layer 17 (ITO layer with a thickness of 138 nm), the barrier layer 18 (Si3N4 layer with a thickness of 10 nm), the metal absorption layer 12 (NiCr layer with a thickness of 8.5 nm), the high refractive index layer (TiO2 layer with a thickness of 34 nm), the low refractive index layer (SiO2 layer with a thickness of 63 nm), and the second protective layer 16 (Si3N4 layer with a thickness of 10 nm) are sequentially deposited on the first surface 1111 of the inner glass 111. The TiO2 layer with a thickness of 34 nm and the SiO2 layer with a thickness of 63 nm constitute the anti-reflection layer 13. After completing the deposition of the coatings, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at high temperature. Next, a 0.76 mm thick PVB with a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed through the manufacturing process of vehicle glass.

[0083] <Example 6>

[0084] Both the outer glass 112 and the inner glass 111 are 2.1 mm thick gray glass with a transmittance of about 40% to 50%. By magnetron sputtering, the first protective layer 15 (10 nm thick SiN layer), the metal absorption layer 12 (7.2 nm thick NiCr layer), the high refractive index layer (26 nm thick TiO2 layer), the low refractive index layer (36 nm thick SiO2 layer), and the second protective layer 16 (15 nm thick Si3N4 layer) are sequentially stacked on the first surface 1111 of the inner glass 111. The 26 nm thick TiO2 layer and the 36 nm thick SiO2 layer constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at high temperature. Next, a 0.76 mm thick PVB with a visible light transmittance of about 90% is prepared as the intermediate layer 113. A laminated glass structure is formed by the manufacturing process of vehicle glass.

[0085] <Comparative Example 1>

[0086] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. No coating is deposited. The outer glass 112 and the inner glass 111 are subjected to a bending forming process at high temperature. Then, a PVB with a thickness of 0.76 mm and a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed through the manufacturing process of vehicle glass.

[0087] <Comparative Example 2>

[0088] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. A high refractive index layer (a TiO2 layer with a thickness of 5 nm) and a low refractive index layer (a SiO2 layer with a thickness of 130 nm) are sequentially stacked and deposited on the first surface 1111 of the inner glass 111 by magnetron sputtering, and no metal absorption layer 12 is deposited. The TiO2 layer with a thickness of 5 nm and the SiO2 layer with a thickness of 130 nm constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at a high temperature. Next, a PVB with a thickness of 0.76 mm and a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed by a manufacturing process of vehicle glass.

[0089] <Comparative Example 3>

[0090] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. A high refractive index layer (a TiO2 layer with a thickness of 10 nm), a low refractive index layer (a SiO2 layer with a thickness of 48 nm), a high refractive index layer (a TiO2 layer with a thickness of 106 nm), and a low refractive index layer (a SiO2 layer with a thickness of 96 nm) are sequentially stacked and deposited on the first surface 1111 of the inner glass 111 by magnetron sputtering, and no metal absorption layer 12 is deposited. The TiO2 layer with a thickness of 10 nm, the SiO2 layer with a thickness of 48 nm, the TiO2 layer with a thickness of 106 nm, and the SiO2 layer with a thickness of 96 nm constitute the anti-reflection layer 13. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at a high temperature. Next, a PVB with a thickness of 0.76 mm and a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed by a manufacturing process of vehicle glass.

[0091] <Comparative Example 4>

[0092] Both the outer glass 112 and the inner glass 111 are normal clear glass with a thickness of 2.1 mm. A first protective layer 15 (a Si3N4 layer with a thickness of 16 nm), a metal absorbing layer 12 (a NiCr layer with a thickness of 7.5 nm), and a second protective layer 16 (a Si3N4 layer with a thickness of 58 nm) are sequentially stacked and deposited on the first surface 1111 of the inner glass 111 by magnetron sputtering, and no anti-reflection layer 13 is deposited. After completing the deposition of the coating, the outer glass 112 and the inner glass 111 are subjected to a bending forming process at a high temperature. Next, a PVB with a thickness of 0.76 mm and a visible light transmittance of about 10% is prepared as the intermediate layer 113. A laminated glass structure is formed by the manufacturing process of vehicle glass.

[0093] The visible light reflectance and reflected color of the laminated glass structures of Comparative Examples 1 to 4 and Example 3 were measured, and the measurement results are shown in Table 1.

[0094] [Table 1]

[0095] The visible light reflectance of the inner glass measured from the first surface side (after high-temperature heat treatment) is the visible light reflectance of the single-pane inner glass measured directly from the first surface side after the inner glass on which the coating has been deposited has been subjected to high-temperature bending forming treatment and before the laminated glass structure is formed. The visible light reflectance of the sunroof glass measured from the inner surface side is the visible light reflectance of the sunroof glass measured from the inner surface side after a laminated glass structure is formed from the outer glass that has been subjected to high-temperature bending forming treatment, the inner glass on which the coating has been deposited, and the intermediate layer in the manufacturing process for vehicle glass.

[0096] As can be seen from Table 1, in Comparative Example 1, the visible light reflectance of the inner glass 111 on which the metal absorbing layer 12 and the anti-reflection layer 13 were not deposited was 8% or more. Even if a laminated glass structure was then formed as a sunroof glass 10 using the inner glass 111 on which the metal absorbing layer 12 and the anti-reflection layer 13 were not deposited, the intermediate layer 113, and the outer glass 112, the visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side was still 4% or more, and a relatively obvious mirror effect existed.

[0097] In Comparative Example 2, the anti-reflection layer 13, i.e., one laminate consisting of a high refractive index layer 131 and a low refractive index layer 132, is disposed to reduce the visible light reflectance of the first surface 1111 of the inner glass 111 to 5% to 6%. The anti-reflection layer 13, the inner glass 111, the intermediate layer 113, and the outer glass 112 form a laminated glass structure to form the sunroof glass 10. The visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side is less than 3%. However, a color test in the Lab color space showed that the reflection color of the sunroof glass 10 when viewed from inside the vehicle is reddish purple, and this reflection color is clearly deviated from the neutral color. It is difficult for passengers to accept it.

[0098] In Comparative Example 3, two laminates each consisting of a high refractive index layer 131 and a low refractive index layer 132 are arranged to reduce the visible light reflectance of the first surface 1111 of the inner glass 111 to 4% to 5%. The two laminates each consisting of the high refractive index layer 131 and the low refractive index layer 132, the inner glass 111, the intermediate layer 113, and the outer glass 112 form a laminated glass structure to form the sunroof glass 10. The visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side is less than 2%. The reflected color of the sunroof glass 10 when viewed from inside the vehicle is neutral, but the total thickness of the coating is 260 nm, which is disadvantageous for the manufacturing process and relatively high manufacturing costs.

[0099] In Comparative Example 4, a nickel-chromium alloy (NiCr) is used as the metal absorbing layer 12, and the visible light reflectance of the first surface 1111 of the inner glass 111 is 4% or less. The metal absorbing layer 12, the inner glass 111, the intermediate layer 113, and the outer glass 112 form a laminated glass structure to form the sunroof glass 10. The visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side is less than 3%. However, a color test in the Lab color space shows that the reflected color of the sunroof glass 10 when viewed from inside the vehicle is clearly deviated from the neutral color. This reflected color is not well accepted by passengers.

[0100] As can be seen from the comparison, in the coating structure of Example 3, the visible light reflectance of the first surface 1111 of the inner glass 111 is less than 4%. The coating structure, the inner glass 111, the intermediate layer 113, and the outer glass 112 form a laminated glass structure to form the sunroof glass 10. The visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side is less than 2%. In addition, the reflected color of the sunroof glass 10 when viewed from inside the vehicle meets the requirement of a neutral color. Compared with Comparative Example 3, the total thickness of the coating in Example 3 is about 1 / 3 of the total thickness of the coating in Comparative Example 3, which has obvious advantages in terms of process manufacturing and cost.

[0101] The visible light reflectance and reflected color of the laminated glass structures of Examples 1 to 6 were measured, and the measurement results are shown in Table 2.

[0102] [Table 2]

[0103] The visible light reflectance of the inner glass measured from the first surface side (before high-temperature heat treatment) is the visible light reflectance of the inner glass of a single sheet measured directly from the first surface side after laminating a coating on the inner glass and before bending at high temperature. The visible light reflectance of the inner glass measured from the first surface side (after high-temperature heat treatment) is the visible light reflectance of the inner glass of a single sheet measured directly from the first surface side before forming a laminated glass structure after performing bending at high temperature on the inner glass laminated with a coating. The visible light reflectance of the sunroof glass measured from the inner surface side is the visible light reflectance of the sunroof glass measured from the inner surface side after forming a laminated glass structure with an outer glass that has been subjected to bending at high temperature, an inner glass on which a coating has been deposited, and an intermediate layer in the manufacturing process of vehicle glass.

[0104] As can be seen from Table 2, in Examples 1 to 6, the visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side is less than 4%, less than 3%, or even less than 2%. In addition, in the Lab color space, the reflected color of the sunroof glass 10 of Examples 1 to 6 measured from the inner surface 11a side has an a value in the range of -6 to 2 (including -6 and 2) and a b value in the range of -12 to 0 (including -12 and 0). That is, in Examples 1 to 6, the sunroof glass 10 can eliminate the mirror effect inside the car and at the same time has an excellent neutral color when viewed from inside the car. In Example 6, gray glass is used as the outer glass and the inner glass, but the technical solution of the present invention can still obtain a visible light reflectance of less than 2% and meet the requirement of neutral color.

[0105] In Examples 1 to 4 and Example 6, the total thickness of the first protective layer 15, the metal absorption layer 12, the anti-reflection layer 13 and the second protective layer 16 is 200 nm or less, preferably 150 nm or less, and even 100 nm or less, which has clear advantages in terms of manufacturing process and cost.

[0106] In addition, as can be seen from Example 2, if the first protective layer 15 is not provided, the metal absorption layer 12 may be partially oxidized during the bending forming process at high temperature of the inner glass 111 on which the coating is laminated, and finally, after the bending forming process at high temperature, the visible light reflectance of the inner glass 111 measured from the first surface side increases significantly. After the inner glass 111 without the first protective layer 15, the intermediate layer 113, and the outer glass 112 are laminated to form the sunroof glass 10, the visible light reflectance of the sunroof glass 10 measured from the inner surface 11a side is less than 4%, and the reflected color of the sunroof glass 10 when viewed from inside the vehicle also meets the requirement of a neutral color, but the reflected color value in Lab space of Example 2 is not as good as other Examples.

[0107] In Example 4, the material of the first protective layer 15 is ZnSnO x In Example 4, Si3N4 is used as the material of the first protective layer 15, and in Example 3, Si3N4 is used as the material of the first protective layer 15. The visible light reflectance of the inner glass 111 is measured from the first surface side. Compared with Example 3, the change in visible light reflectance before and after the bending forming process at high temperature in Example 4 is larger than that in Example 3. Preferably, the material of the first protective layer 15 contains a nitride of Si. This can improve the thermal stability of the coating and suppress the degree of oxidation of the metal absorption layer 12.

[0108] As can be seen from Example 5, the sunroof glass 10 has a low-emissivity function due to the additional provision of the low-emissivity layer 17, but can still maintain a relatively low visible light reflectance and excellent neutral color.

[0109] The above is an exemplary embodiment of the present application. Those skilled in the art can make some improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also fall within the protection scope of the present application.

Claims

1. A sunroof glass comprising a glass substrate, a metal absorbing layer, and an anti-reflection layer, the glass substrate having an outer surface and an inner surface, the metal absorbing layer and the anti-reflection layer being sequentially stacked on the inner surface along a direction away from the glass substrate, The sunroof glass is characterized by the above.

2. The sunroof glass further includes a first protective layer, the first protective layer being provided on the inner surface and positioned between the inner surface and the metal absorbing layer; 2. The sunroof glass according to claim 1.

3. The sunroof glass further includes a second protective layer, the second protective layer being provided on a surface of the anti-reflection layer away from the metal absorbing layer.

3. The sunroof glass according to claim 1 or 2.

4. the antireflection layer includes at least one laminate including a high refractive index layer and a low refractive index layer, the high refractive index layer having a refractive index of 1.7 or more, and the low refractive index layer having a refractive index of less than 1.7; The sunroof glass according to any one of claims 1 to 3.

5. The sunroof glass further includes a low-emissivity layer, the low-emissivity layer being disposed between the first protective layer and the metal absorbing layer.

3. The sunroof glass according to claim 2.

6. the low emissivity layer comprises one or more of an indium tin oxide (ITO) layer, a fluorine doped tin oxide (FTO) layer, an antimony doped tin oxide (ATO) layer, an aluminum doped zinc oxide (AZO) layer; 6. The sunroof glass according to claim 5.

7. The sunroof glass further comprises a barrier layer, the barrier layer being disposed between the low-emissivity layer and the metal absorbing layer.

7. The sunroof glass according to claim 6.

8. The glass substrate is a laminated glass, the laminated glass including an inner glass, an outer glass, and an intermediate layer connected between the outer glass and the inner glass, the inner glass having a first surface and a second surface opposite to the first surface, the first surface being the inner surface, the outer glass having a third surface and a fourth surface opposite to the third surface, the fourth surface being the outer surface. The sunroof glass according to any one of claims 1 to 7.

9. The glass substrate further includes an infrared reflective layer, the infrared reflective layer being provided on the second surface and / or the third surface.

9. The sunroof glass according to claim 8.

10. the visible light transmittance of the sunroof glass is in the range of 1% to 20%, the visible light reflectance of the sunroof glass measured from the inner surface side is 4% or less, and in the Lab color space, the reflected color of the sunroof glass measured from the inner surface side has an a value in the range of -6 to 2 and a b value in the range of -12 to 0; 9. The sunroof glass according to claim 8.

11. The visible light transmittance of the outer glass is 70% or more, the visible light transmittance of the inner glass is 70% or more, and the visible light transmittance of the intermediate layer is in the range of 1% to 30%.

11. The sunroof glass according to claim 10.

12. The visible light transmittance of the outer glass is 50% or less, the visible light transmittance of the inner glass is 50% or less, and the visible light transmittance of the intermediate layer is 70% or more.

11. The sunroof glass according to claim 10.

13. A light control element is further provided between the second surface and the third surface, the light control element including one or more of a polymer dispersed liquid crystal (PDLC) light control film, a polymer network liquid crystal (PNLC) light control film, a suspended particle device (SPD) light control film, or an electrochromic (EC) light control film; 11. The sunroof glass according to claim 10.

14. The glass substrate is a single-layer tempered glass, and the thickness of the single-layer tempered glass is 5 mm or more.

2. The sunroof glass according to claim 1.

15. The single-pane tempered glass is a colored glass, and the colored glass has Fe ２ O ３ The total iron content, expressed as 15. The sunroof glass according to claim 14.

16. A vehicle, The vehicle includes a vehicle body and the sunroof glass according to any one of claims 1 to 15, and the sunroof glass is connected to the vehicle body. A vehicle characterized by:

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