Laminated glass and vehicle

Abstract

The invention provides laminated glass and a vehicle. The laminated glass comprises a first glass plate, a bonding layer, a second glass plate and a coating layer, the first glass plate is provided with a first surface and a second surface, the second glass plate is provided with a third surface and a fourth surface, the bonding layer is connected with the second surface and the third surface, and the coating layer is arranged on at least one of the second surface, the third surface and the fourth surface; the laminated glass is provided with a shielding area formed by a coating layer, the visible light transmittance TL of the shielding area is smaller than or equal to 7%, and the ultraviolet light transmittance Tuv1 of the shielding area to ultraviolet light is smaller than or equal to 0.5%. The coating layer is arranged in the shielding area, so that the shielding area has low visible light transmittance TL and low ultraviolet light transmittance Tuv1, and the shielding function of the ink area in the related technology is met. Moreover, the coating layer is arranged on the glass plate in a coating high-temperature sintering manner, so that the damage to the glass plate due to the arrangement of an ink area in the related technology can be reduced, and the impact resistance of the edge part of the laminated glass is improved.

Description

Technical Field

[0001] The present application belongs to the field of glass technology, and specifically relates to laminated glass and vehicles. Background Art

[0002] In vehicles, black ink is often screen-printed around the glass to mask the connection structure between the glass and the vehicle to achieve an aesthetically pleasing appearance. The ink printing process is mature and simple, and has good masking properties.

[0003] However, since the thickness of screen-printed ink is generally in the range of 5 to 20 microns, and the heat absorption coefficient and thermal expansion coefficient of ink and glass are quite different, the glass surface covered by ink will have a deformation trend different from that of the glass itself during heating and forming and subsequent annealing and cooling, which will lead to surface stress. Especially at the junction of ink and glass, it is easy to be superimposed with the edge stress of the glass itself during the forming process to produce a large edge tensile stress, which further leads to a decrease in the strength of the glass in the ink area and the probability of cracking. Summary of the invention

[0004] In view of this, the first aspect of the present application provides a laminated glass, the laminated glass comprising a first glass plate, an adhesive layer, a second glass plate, and a coating layer, the first glass plate having a first surface and a second surface, the second glass plate having a third surface and a fourth surface, the adhesive layer connecting the second surface and the third surface, the coating layer being provided on at least one of the second surface, the third surface, and the fourth surface;

[0005] The laminated glass has a shielding area formed by the coating layer, the shielding area is at least arranged along the edge of the laminated glass, the shielding area has a visible light transmittance TL, the visible light transmittance TL≤7%, and the shielding area has an ultraviolet light transmittance Tuv1 for ultraviolet light, the ultraviolet light transmittance Tuv1≤0.5%.

[0006] Wherein, the visible light transmittance TL≤6%, or TL≤5%, or TL≤4%, or TL≤3%, or TL≤2%, or TL≤1%, or TL≤0.5%.

[0007] Wherein, the ultraviolet light transmittance Tuv1≤0.4%, or Tuv1≤0.3%, or Tuv1≤0.2%, or Tuv1≤0.1%.

[0008] Among them, along the stacking direction from the first glass plate to the second glass plate, the outer surface of the laminated glass corresponding to the shielding area has a light reflectivity RL, and the light reflectivity RL is 7% to 30%, or 10% to 25%, or 12% to 20%, or 15% to 20%.

[0009] The bonding layer has an ultraviolet light transmittance Tuv2 for ultraviolet light, and the ultraviolet light transmittance Tuv2≤1%, or Tuv2≤0.5%, or Tuv2≤0.1%.

[0010] The laminated glass comprises a middle area and a peripheral area arranged at the periphery of the middle area, and the coating layer covers the peripheral area; or the coating layer covers the middle area and the peripheral area.

[0011] Wherein, the peripheral area includes a tensile stress concentration area connected to the edge of the laminated glass, the tensile stress concentration area is located in a size range of 0 to 50 mm in the extension direction from the edge of the laminated glass to the center of the laminated glass, and the coating layer covers the tensile stress concentration area.

[0012] The laminated glass is applied to a vehicle, the vehicle includes a vehicle interior, the vehicle interior is arranged on the inner surface of the laminated glass facing the interior of the vehicle, the vehicle interior is arranged in the peripheral area, a first distance D1 is provided between the vehicle interior and the edge of the laminated glass, a second distance D2 is provided between the end of the coating layer away from the edge of the laminated glass and the edge of the laminated glass, and the absolute value of the difference between the first distance D1 and the second distance D2 is 0 to 5 mm.

[0013] Wherein, the laminated glass further includes a heat insulation layer arranged between the second surface and the third surface.

[0014] Wherein, the orthographic projection of the heat insulation layer on the first surface and the orthographic projection of the coating layer on the first surface at least partially overlap with each other;

[0015] Alternatively, there is a gap between the orthographic projection of the heat insulation layer on the first surface and the orthographic projection of the coating layer on the first surface.

[0016] Wherein, the laminated glass further includes a low-emissivity layer, and the low-emissivity layer is disposed on at least one of the second surface, the third surface, and the fourth surface.

[0017] Wherein, the emissivity of the low emissivity layer is e≤0.3, or e≤0.25, or e≤0.2.

[0018] Wherein, the orthographic projection of the low-emissivity layer on the first surface and the orthographic projection of the coating layer on the first surface at least partially overlap with each other;

[0019] Alternatively, there is a gap between the orthographic projection of the low-emissivity layer on the first surface and the orthographic projection of the coating layer on the first surface.

[0020] Wherein, the physical thickness of the coating layer is 60nm-500nm, or 70nm-400nm, or 70nm-350nm.

[0021] The coating layer includes at least two light absorbing layers, and the material of the light absorbing layer is selected from at least one of W, Ni, Cr, Ti, Nb, Mo, Si, and Zr.

[0022] Wherein, the coating layer also includes at least one dielectric layer, and the material of the dielectric layer is selected from at least one of Zn, Si, Sn, Ti, Nb, Zr, Hf, Mg, Ni, In, Al, Ga, Bi metal oxides and mixtures thereof, or selected from at least one of Si, Al, Zr, Ti, Y, Hf, Nb, Ta metal nitrides or oxynitrides and mixtures thereof.

[0023] Wherein, the medium layer is arranged between the two light absorbing layers;

[0024] And / or, the dielectric layer is disposed on a side of the light absorbing layer facing the first glass plate;

[0025] And / or, the dielectric layer is disposed on a side of the light absorbing layer facing away from the first glass plate.

[0026] Wherein, the refractive index of the medium layer disposed between the two light absorbing layers is ≥1.8 at the light with a wavelength of 550 nm.

[0027] Wherein, the ratio of the total physical thickness of the visible light absorption layer to the total physical thickness of the dielectric layer is 0.2 to 1.8, or 0.5 to 1.5.

[0028] A second aspect of the present application provides a vehicle, comprising a vehicle body, and the laminated glass provided in the first aspect of the present application, wherein the laminated glass is arranged on the vehicle body.

[0029] The laminated glass and vehicle provided by the present application provide a low visible light transmittance TL and a low ultraviolet light transmittance Tuv1 in the shielding area by setting the coating layer in the shielding area, thereby satisfying the shielding function of the ink area in the related art. In addition, since the coating layer of the present application is set on the glass plate by high-temperature sintering of the coating, the damage to the glass plate caused by setting the ink area in the related art can be reduced, the impact resistance of the edge of the laminated glass is improved, the probability of the laminated glass breaking is reduced, and the structural strength of the laminated glass is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0031] Figure 1A schematic diagram of the structure of a laminated glass provided in one embodiment of the present application.

[0032] Figure 2 A schematic structural diagram of a laminated glass provided in another embodiment of the present application.

[0033] Figure 3 A schematic structural diagram of laminated glass provided in yet another embodiment of the present application.

[0034] Figure 4 A schematic diagram of the structure of a coating layer provided in one embodiment of the present application.

[0035] Explanation of reference numerals: laminated glass 10, first glass plate 11, first surface 111, second surface 112, bonding layer 12, second glass plate 13, third surface 131, fourth surface 132, coating layer 20, first dielectric layer 21, first light absorbing layer 22, high refractive index layer 23, second light absorbing layer 24, second dielectric layer 25, first dielectric sublayer 251, second dielectric sublayer 252, low-emissivity layer 30, ink layer 40, thermal insulation layer 50, functional component 60. DETAILED DESCRIPTION

[0036] The following are preferred implementations of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

[0037] The following are preferred implementations of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

[0038] Unless otherwise specified or there is a contradiction, the terms and phrases used in this application have the following meanings:

[0039] In this application, "first", "second", etc. are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0040] In this application, "one or several" refers to any one, any two or more of the listed items. Among them, "several" refers to any two or more of the listed items.

[0041] The value of x in the chemical formula: if it is clearly defined, it shall be within the defined range. If it is not clearly defined, it can be determined based on the deposition in a stoichiometric, substoichiometric or superstoichiometric manner in the magnetron sputtering process.

[0042] Refractive Index: The refractive index measured at a wavelength of 550 nm.

[0043] like Figure 1 As shown, the present application provides a laminated glass 10, the laminated glass 10 includes a first glass plate 11, an adhesive layer 12, a second glass plate 13, and a coating layer 20, the first glass plate 11 has a first surface 111 and a second surface 112, the second glass plate 13 has a third surface 131 and a fourth surface 132, the adhesive layer 12 connects the second surface 112 and the third surface 131, and the coating layer 20 is arranged on at least one of the second surface 112, the third surface 131, and the fourth surface 132.

[0044] The laminated glass 10 has a shielding area formed by the coating layer 20, and the shielding area is at least arranged along the edge of the laminated glass 10, and the shielding area has a visible light transmittance TL, and the visible light transmittance TL≤7%. The shielding area has an ultraviolet light transmittance Tuv1 for ultraviolet light, and Tuv1≤0.5%.

[0045] When the laminated glass 10 is installed on a vehicle, it is preferably used as the front windshield of the vehicle. However, it is not limited thereto. The laminated glass 10 can also be used as a rear windshield or side window glass, thereby providing more display scene applications for the vehicle. The laminated glass 10 has a light-transmitting area and a shielding area. The visible light transmittance of the light-transmitting area is greater than or equal to 70%. The shielding area is arranged around the light-transmitting area. The shielding area can play a shielding role and can also improve the overall aesthetics of the laminated glass 10.

[0046] The present application found that the use of screen-printed black ink for shielding on a glass plate may reduce the strength of the glass plate by at least 40-50%. If the glass plate is coated with an infrared reflective coating and then sintered at high temperature, the strength of the glass plate may be reduced by 2%-5%. If black ink and an infrared reflective coating are stacked on the glass plate, the strength of the substrate may be reduced by at least 50-55%. It can be seen that in the related art, due to the large differences in the heat absorption coefficient and thermal expansion coefficient between the ink and the glass plate, light distortion is easily formed at the interface between the ink and the glass plate after the glass plate is heated and formed, thereby weakening the stress of the glass plate in the ink area and making the glass plate in the ink area prone to cracking. Therefore, ink is the main factor that reduces the strength of the glass plate.

[0047] Specifically, the first glass plate 11 is used as the outer glass plate of the laminated glass 10, and the first glass plate 11 has a first surface 111 and a second surface 112, the first surface 111 is away from the adhesive layer 12 and is in contact with the vehicle exterior environment, and the second surface 112 is close to the adhesive layer 12; the second glass plate 13 is used as the inner glass plate of the laminated glass 10, and the second glass plate 13 has a third surface 131 and a fourth surface 132, the third surface 131 is close to the adhesive layer 12, and the fourth surface 132 is away from the adhesive layer 12 and is in contact with the vehicle interior environment; the adhesive layer 12 connects the second surface 112 and the third surface 131. The coating layer 20 is provided on the second surface 112, and / or the third surface 131, and / or the fourth surface 132.

[0048] The first glass plate 11 is transparent glass or tinted glass, the thickness of the first glass plate 11 is 0.7 mm to 4 mm, and the visible light transmittance of the first glass plate 11 is greater than or equal to 80%. The second glass plate 13 is transparent glass or tinted glass, the thickness of the second glass plate 13 is 0.7 mm to 4 mm, and the visible light transmittance of the second glass plate 13 is greater than or equal to 80%. The total iron content (in terms of Fe2O3) of the transparent glass is less than or equal to 0.1%, or even less than or equal to 0.05%, or further less than or equal to 0.01%, and the visible light transmittance of the transparent glass is 80% to 95%; the total iron content (in terms of Fe2O3) of the colored glass is 0.1% to 0.8%, preferably 0.1% to 0.5%, and the visible light transmittance of the colored glass is 80% to 90%. For example, the first glass plate 11 can be a transparent glass with a thickness of 2.1 mm and a visible light transmittance of 89%, and the second glass plate 13 can be a green glass with a thickness of 1.6 mm and a visible light transmittance of 83%, or a green glass with a thickness of 2.1 mm and a visible light transmittance of 80%.

[0049] Wherein, the bonding layer 12 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the bonding layer 12 is 0.38mm to 2.28mm. For example, the thickness of the bonding layer 12 can be, but is not limited to, 0.38mm, or 0.76mm, or 1.14mm, or 1.52mm, or 1.9mm, or 2.28mm, or other values ​​between 0.38mm and 2.28mm. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA) and ionic polymer (SGP). When the bonding layer 12 is a transparent thermoplastic polymer, the visible light transmittance of the transparent thermoplastic polymer is greater than or equal to 80%. For example, the visible light transmittance of the bonding layer 12 can be, but is not limited to, 80%, or 85%, or 90%, or 95%, etc. When the bonding layer 12 is a colored thermoplastic polymer film, the visible light transmittance of the colored thermoplastic polymer film is greater than or equal to 80%. For example, the visible light transmittance of the bonding layer 12 can be, but is not limited to, 80%, 85%, or 90%. The colored thermoplastic polymer film can be selected from a gray thermoplastic polymer film, a green thermoplastic polymer film, or a blue thermoplastic polymer film. Exemplarily, the bonding layer 12 can be a single-layer structure or a multi-layer structure, and the multi-layer structure can be exemplified by a double-layer structure, a three-layer structure, a four-layer structure, a five-layer structure, etc. The bonding layer 12 can also have other functions, such as providing at least one colored area as a shadow band to reduce the interference of sunlight to the human eye, or adding an infrared absorber to have a sunscreen or heat insulation function, or adding an ultraviolet absorber to have an ultraviolet light isolation function, or at least one layer of the multi-layer structure has a higher plasticizer content to have a sound insulation function.

[0050] Optionally, a dimming film is provided between the first glass plate 11 and the second glass plate 13, and the dimming film may be a polymer dispersed liquid crystal film (PDLC), a suspended particle film (SPD), an electrochromic film (EC), a dye liquid crystal film (LC), etc. The minimum visible light transmittance of the dimming film is less than or equal to 3%, such as 3%, 2%, 1%, 0.5%, 0%. In addition, the maximum visible light transmittance of the dimming film is set as required, such as 10%, 20%, 30%, 50%, 70%, 80%, etc. For example, the visible light transmittance of the dimming film can be adjusted between 0% and 20%, between 0.5% and 50%, between 0% and 70%, etc. The dimming film can meet the requirements of visible light transmittance in multiple scenarios. For example, when black-border display is required, the dimming film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%) to improve the contrast between the displayed image and the displayed background. When no display is performed, the dimming film is in a transparent state (visible light transmittance is greater than or equal to 70%) to achieve transparency in a larger area of ​​the vehicle window glass. The dimming film is arranged in the bonding layer 12. For example, the bonding layer 12 can be two thermoplastic polymer films, and the dimming film is sandwiched between the two thermoplastic polymer films.

[0051] The shielding area of ​​the present application has a visible light transmittance TL≤7%, which can be specifically exemplified by 7%, or 6%, or 5%, or 4%, or 3%, or 2%, or 1%, etc. Preferably, the shielding area has a visible light transmittance TL≤6%, more preferably, the shielding area has a visible light transmittance TL≤3%, and further preferably, the shielding area has a visible light transmittance TL≤1%.

[0052] The coating layer 20 is provided on a 2.1 mm transparent glass plate, the transparent glass plate has a visible light transmittance TL0, the visible light transmittance TL0 ≥ 88%, the TL and the TL0 satisfy: TL / TL0 < 0.08, specifically, 0.08, or 0.07, or 0.06, or 0.05, or 0.04, or 0.03, or 0.01, or 0.005, etc., preferably, TL / TL0 ≤ 0.05, more preferably TL / TL0 ≤ 0.03, further preferably, TL / TL0 ≤ 0.01, or TL / TL0 ≤ 0.005. The coating layer 20 of the present application can save the material used for the ink layer 40 in the related art to a certain extent, and replace the ink layer 40 in the related art to play a shielding role, which is conducive to reducing the manufacturing cost of the laminated glass 10.

[0053] In the present application, along the lamination direction from the first glass plate 11 to the second glass plate 13, the outer surface of the laminated glass 10 corresponding to the shielding area has a light reflectivity RL of 7% to 30%, specifically, 30%, 25%, 20%, 15%, 10%, 7%, etc. Preferably, the light reflectivity RL is 10% to 25%, more preferably, the light reflectivity RL is 12% to 20%, and further preferably, the light reflectivity RL is 15% to 20%, so that the mirror effect of the laminated glass 10 is more obvious and the user experience is improved. It should be noted that the light reflectivity RL of the outer surface of the laminated glass 10 is measured in the lamination direction from the first glass plate 11 to the second glass plate 13, and the outer surface of the laminated glass 10 can also be understood as the first surface 111, and the first surface 111 is arranged to face the outside of the vehicle.

[0054] The shielding area of ​​the present application has an ultraviolet light transmittance Tuv1 for ultraviolet light, Tuv1≤0.5%, and specific examples include 0.5%, or 0.4%, or 0.3%, or 0.2%, or 0.1%, or 0.05%, or 0.02%, etc. Preferably, the shielding area has an ultraviolet light transmittance Tuv1≤0.2%, and more preferably, the shielding area has an ultraviolet light transmittance Tuv1≤0.05%. By arranging a coating layer 20 in the shielding area, the shielding area can prevent more ultraviolet light from passing through, thereby improving the shielding effect of the shielding area.

[0055] Among them, the bonding layer 12 has an ultraviolet light transmittance Tuv2 for ultraviolet light, Tuv2≤1%, specifically, 1%, or 0.5%, or 0.3%, or 0.1%, etc. Preferably, the bonding layer 12 has an ultraviolet light transmittance Tuv2≤0.5%, and more preferably, the bonding layer 12 has an ultraviolet light transmittance Tuv2≤0.1%. The bonding layer 12 is a film layer with anti-ultraviolet light function. The anti-ultraviolet light bonding layer 12 cooperates with the coating layer 20, which can further improve the function of the laminated glass 10 to prevent ultraviolet light from passing through, and further improve the shielding effect of the shielding area.

[0056] In summary, the present application sets the coating layer 20 in the shielding area, so that the shielding area has a lower visible light transmittance TL and a lower ultraviolet light transmittance Tuv1, which satisfies the shielding function of the ink area in the related art. In addition, since the coating layer 20 of the present application is set on the glass plate by high-temperature sintering of the coating, the damage to the glass plate caused by setting the ink area in the related art can be reduced, the impact resistance of the edge of the laminated glass 10 is improved, the probability of the laminated glass 10 breaking is reduced, and the structural strength of the laminated glass 10 is improved.

[0057] The laminated glass 10 includes a middle area and a peripheral area arranged at the periphery of the middle area, and the coating layer 20 covers the peripheral area; or, the coating layer 20 covers the middle area and the peripheral area. For example, the coating layer 20 is only arranged in the peripheral area of ​​the laminated glass 10; for another example, the coating layer 20 is arranged in the middle area and the peripheral area of ​​the laminated glass 10, which can also be understood as the coating layer 20 covers the surface of at least one side of the laminated glass 10.

[0058] The peripheral area includes a tensile stress concentration area connected to the edge of the laminated glass 10, and the tensile stress concentration area is located in a size range of 0 to 50 mm in the extending direction from the edge of the laminated glass 10 to the center of the laminated glass 10. For example, the tensile stress concentration area can be located in a size range of 5 to 50 mm, 10 to 50 mm, 15 to 50 mm, 20 to 50 mm, 10 to 45 mm in the extending direction from the edge of the laminated glass 10 to the center of the laminated glass 10, and the coating layer 20 covers the tensile stress concentration area. The size covered by the tensile stress concentration area can be specifically exemplified as 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc. The tensile stress concentration area refers to the area of ​​the laminated glass 10 that is easily broken by external impact. The coating layer 20 is arranged in the tensile stress concentration area to better protect the laminated glass 10, reduce the damage to the laminated glass 10 caused by arranging the ink layer 40 in the tensile stress concentration area in the related art, improve the impact resistance of the edge of the laminated glass 10, reduce the probability of the laminated glass 10 breaking, and improve the structural strength of the laminated glass 10.

[0059] The laminated glass 10 is applied to a vehicle, and the vehicle includes a vehicle interior part, and the vehicle interior part is arranged on the inner surface of the laminated glass 10 facing the interior of the vehicle, and the inner surface of the laminated glass 10 refers to the surface of the laminated glass 10 facing the interior of the vehicle, and the vehicle interior part is arranged in the peripheral area, and there is a first distance D1 between the vehicle interior part and the edge of the laminated glass 10, and there is a second distance D2 between the end of the coating layer 20 away from the edge of the laminated glass 10 and the edge of the glass substrate, and the absolute value of the difference between the first distance D1 and the second distance D2 is 0 to 5 mm. The absolute value of the difference between D1 and D2 can be specifically exemplified as 1 mm, or 2 mm, or 3 mm, or 4 mm, or 5 mm, etc., providing space for setting the installation deviation of the vehicle interior part, and the coating layer 20 can be used to shield the vehicle interior part. It should be noted that the inner surface of the laminated glass 10 can also be understood as the fourth surface 132, and the fourth surface 132 is arranged facing the interior of the vehicle.

[0060] like Figure 2As shown, in one embodiment, the laminated glass 10 further includes a heat insulating layer 50 disposed between the second surface 112 and the third surface 131. For example, the heat insulating layer 50 is disposed between the second surface 112 and the bonding layer 12; for another example, the heat insulating layer 50 is disposed between the third surface 131 and the bonding layer 12; for another example, the bonding layer 12 is a two-layer structure, and the heat insulating layer 50 is disposed between the two bonding layers 12. In the laminated glass 10, the orthographic projection of the heat insulating layer 50 on the first surface 111 and the orthographic projection of the coating layer 20 on the first surface 111 at least partially overlap with each other; or, there is a gap between the orthographic projection of the heat insulating layer 50 on the first surface 111 and the orthographic projection of the coating layer 20 on the first surface 111. According to product requirements, the edges of the low heat insulating layer 50 and the coating layer 20 can be overlapped with each other, or separated from each other. By providing the heat insulating layer 50 , the heat insulating effect of the laminated glass 10 can be improved, thereby improving the comfort of the user and reducing the energy loss for cooling.

[0061] like Figure 2 As shown, in another embodiment, the laminated glass 10 further includes a low-emissivity layer 30, and the low-emissivity layer 30 is disposed on at least one of the second surface 112, the third surface 131, and the fourth surface 132. The emissivity of the low-emissivity layer 30 is e≤0.3, and specifically, it can be 0.25, 0.2, 0.15, or 0.1, etc. Preferably, the emissivity of the low-emissivity layer 30 is e≤0.25, and more preferably, the emissivity of the low-emissivity layer 30 is e≤0.2. On the laminated glass 10, the orthographic projection of the low-emissivity layer 30 on the first surface 111 and the orthographic projection of the coating layer 20 on the first surface 111 at least partially overlap with each other; or, there is a gap between the orthographic projection of the low-emissivity layer 30 on the first surface 111 and the orthographic projection of the coating layer 20 on the first surface 111. According to product requirements, the edges of the low-emissivity layer 30 and the coating layer 20 can be overlapped with each other, or separated from each other. By providing the low-emissivity layer 30 , the reflectivity of the laminated glass 10 to near-infrared light can be increased while ensuring that the visible light transmittance remains substantially unchanged, thereby reducing the solar energy transmittance of the laminated glass 10 .

[0062] like Figure 3As shown, in another embodiment, the laminated glass 10 further includes an ink layer 40 disposed in the shielding area, and the ink layer 40 is used to install or position the functional part 60. The ink layer 40 is disposed on at least one of the second surface 112, the third surface 131, and the fourth surface 132. Optionally, the ink layer 40 overlaps at least part of the area where the coating layer 20 is located. According to product requirements, a local ink layer 40 can be disposed on the laminated glass 10, and the peripheral area of ​​the laminated glass 10 can still retain a local ink layer 40. For example, the ink layer 40 is disposed on the fourth surface 132 and is obtained by ceramic printing. Car body glue can be disposed on the ink layer 40 to improve the bonding performance of the area. The ink layer 40 is disposed on the second surface 112 and / or the fourth surface 132, and can also be used as an assembly positioning mark for the functional part 60. The functional part 60 can be a pad, an edge strip, a bracket, etc.

[0063] There is no ink layer 40 in the shielding area; or, the ink layer 40 in the shielding area accounts for less than or equal to 10% of the entire shielding area. Specifically, for example, the ink layer 40 accounts for 10%, 8%, 6%, 4%, 2%, etc.

[0064] like Figure 4 As shown, the structure of the coating layer 20 is described in detail below. The coating layer 20 can be prepared by physical vapor deposition (PVD) or chemical vapor deposition (CVD), and is disposed on the first glass plate 11 and / or the second glass plate 13 by high-temperature sintering of the coating layer, which can reduce the damage to the first glass plate 11 and / or the second glass plate 13 caused by the ink area disposed in the related art, improve the impact resistance of the edge of the laminated glass 10, and reduce the probability of the laminated glass 10 breaking.

[0065] The physical thickness of the coating layer 20 is 60nm to 500nm, and specifically, for example, 60nm, or 70nm, or 80nm, or 90nm, or 100nm, or 150nm, or 200nm, or 250nm, or 300nm, or 350nm, or 400nm, or 450nm, or 500nm, etc. Preferably, the physical thickness of the coating layer 20 is 70nm to 400nm, and more preferably, the physical thickness of the coating layer 20 is 70nm to 350nm. In the related art, compared with using an ink layer with a physical thickness of 5μm to 20μm as a shielding layer, the physical thickness of the coating layer 20 is reduced by one order of magnitude. During the molding process, the coating layer 20 with a nanometer-level thickness will hardly have a weakening effect on the glass surface, which is equivalent to improving the impact resistance of the edge of the laminated glass 10, reducing the breakage of the laminated glass 10, and improving the structural strength of the laminated glass 10.

[0066] The coating layer 20 includes at least two light absorbing layers, and the material of the light absorbing layers is selected from at least one of W, Ni, Cr, Ti, Nb, Mo, Si, and Zr, and specific examples include NiCr, NiAl, NiSi, Cr, TiN, NbN, MoTi, etc.

[0067] The coating layer 20 further includes at least one dielectric layer, the material of which is selected from at least one of Zn, Si, Sn, Ti, Nb, Zr, Hf, Mg, Ni, In, Al, Ga, Bi metal oxides and mixtures thereof, or selected from at least one of Si, Al, Zr, Ti, Y, Hf, Nb, Ta metal nitrides or oxynitrides and mixtures thereof. Specific examples include SiN, SiO x , ZnSnOx (zinc tin oxide)), TiOx (titanium oxide), SiNx (silicon nitride), AZO (aluminum-doped zinc oxide), ZrOx (zirconium oxide), NbOx (niobium oxide), etc. The dielectric layer may be a single-layer structure or a multi-layer structure, for example, including at least two dielectric sublayers. For example, the dielectric layer is composed of a first dielectric sublayer 251 and a second dielectric sublayer 252 stacked. Figure 4 As shown, the second dielectric layer 25 is composed of a first dielectric sub-layer 251 and a second dielectric sub-layer 252 which are stacked.

[0068] Specifically, the dielectric layer is disposed between the two light absorbing layers; and / or, the dielectric layer is disposed on a side of the light absorbing layer facing the first glass plate 11; and / or, the dielectric layer is disposed on a side of the light absorbing layer facing away from the first glass plate 11.

[0069] Moreover, the dielectric layer disposed between the two light absorbing layers has a refractive index of ≥1.8 at a light with a wavelength of 550 nm. The dielectric layer disposed between the two light absorbing layers can also be understood as an intermediate dielectric layer, which has a high refractive index and can also be referred to as a high refractive index layer 23. The high refractive index layer 23 has a refractive index of ≥1.8 at a light with a wavelength of 550 nm, and specifically can be exemplified by 1.8, or 1.9, or 2.0, or 2.1, or 2.2, or 2.3, or 2.4, or 2.5, or 2.6, or 2.7, or 2.8, or 2.9, or 3.0, etc. Preferably, the high refractive index layer 23 has a refractive index of ≥2 at a light with a wavelength of 550 nm, more preferably, the high refractive index layer 23 has a refractive index of ≥2.3 at a light with a wavelength of 550 nm, and further preferably, the high refractive index layer 23 has a refractive index of ≥2.5, or ≥2.8, or ≥3 at a light with a wavelength of 550 nm.

[0070] like Figure 4As shown, the coating layer 20 is composed of two light absorbing layers, a high refractive index layer 23, and two dielectric layers, for example, composed of "first dielectric layer 21 / first light absorbing layer 22 / high refractive index layer 23 / second light absorbing layer 24 / second dielectric layer 25". The high refractive index layer 23 can also be understood as an intermediate dielectric layer. The second dielectric layer 25 is composed of a first dielectric sublayer 251 and a second dielectric sublayer 252 stacked in layers. Optionally, the physical thickness of the first dielectric layer 21 is 20nm to 45nm, and the physical thickness of the second dielectric layer 25 is 3nm to 200nm. The physical thickness of the first light absorbing layer 22 is 10nm to 100nm, and the physical thickness of the second light absorbing layer 24 is 10nm to 100nm.

[0071] The ratio of the total physical thickness of the light absorbing layer to the total physical thickness of the dielectric layer is 0.2 to 1.8, and specifically, it can be 0.2, or 0.5, or 0.8, or 1.0, or 1.2, or 1.5, or 1.8, etc. Preferably, the ratio of the total physical thickness of the light absorbing layer to the total physical thickness of the dielectric layer is 0.5 to 1.5. By optimizing the film thickness of the coating layer 20, the laminated glass 10 has a lower visible light transmittance TL and a lower light reflectance RL, which satisfies the shielding function of the ink area in the relevant technology.

[0072] In the coating layer 20, the total physical thickness of the light absorbing layer refers to the sum of the physical thicknesses of all the light absorbing layers in the coating layer 20. The total physical thickness of the light absorbing layer is ≥10nm, which can be specifically exemplified by 10nm, or 15nm, or 20nm, or 25nm, or 30nm, or 35nm, or 40nm, or 50nm, or 60nm, or 70nm, or 80nm, etc. Preferably, the total physical thickness of the light absorbing layer is ≥20nm, more preferably, the total physical thickness of the light absorbing layer is ≥30nm, and further, the total physical thickness of the light absorbing layer is ≥50nm, or ≥80nm. The physical thickness of one of the light absorbing layers is ≥5nm, which can be specifically exemplified by 5nm, or 10nm, or 15nm, or 20nm, or 25nm, or 30nm, etc. Preferably, the physical thickness of one of the light absorbing layers is ≥10nm, and more preferably, the physical thickness of one of the light absorbing layers is ≥20nm.

[0073] The physical thickness of the dielectric layer closest to the glass substrate in the coating layer 20 is 20nm to 45nm, and specifically, for example, 20nm, 25nm, 30nm, 35nm, 40nm, 45nm, etc. Preferably, the physical thickness of the dielectric layer closest to the glass substrate in the coating layer 20 is 25nm to 45nm, and more preferably, the physical thickness of the dielectric layer closest to the glass substrate in the coating layer 20 is 30nm to 40nm. When the coating layer 20 is disposed on the second surface 112, the glass substrate is the first glass plate 11; when the coating layer 20 is disposed on the third surface 131 or the fourth surface 132, the glass substrate is the second glass plate 13. Figure 4 As shown, the first dielectric layer 21 is the dielectric layer in the coating layer 20 that is closest to the glass substrate, and the physical thickness of the first dielectric layer 21 is 20 nm to 45 nm.

[0074] The physical thickness of the dielectric layer in the coating layer 20 farthest from the glass substrate is 3nm to 200nm, and specifically, for example, 3nm, or 10nm, or 50nm, or 100nm, or 150nm, or 200nm, etc. Preferably, the physical thickness of the dielectric layer in the coating layer 20 farthest from the glass substrate is 30nm to 150nm, and more preferably, the physical thickness of the dielectric layer in the coating layer 20 farthest from the glass substrate is 50nm to 100nm. When the coating layer 20 is disposed on the second surface 112, the glass substrate is the first glass plate 11; when the coating layer 20 is disposed on the third surface 131 or the fourth surface 132, the glass substrate is the second glass plate 13. Figure 4 As shown, the second dielectric layer 25 is the dielectric layer in the coating layer 20 that is farthest from the glass substrate, and the physical thickness of the second dielectric layer 25 is 3 nm to 200 nm.

[0075] The present application also provides a vehicle, comprising a vehicle body and the laminated glass provided in the present application, wherein the laminated glass is arranged on the vehicle body. When the laminated glass is installed on the vehicle, it is preferably used as the front windshield of the vehicle. However, the laminated glass can also be used as the rear windshield or side window glass, thereby providing more display scene applications for the vehicle.

[0076] In order to make the purpose and advantages of the present application clearer, the effects of the reflective element of the present application are further described in detail below in conjunction with specific embodiments.

[0077] In Examples 1-11, the coating layer is provided on the outer glass plate and / or the inner glass plate for illustration. The outer glass plate and the inner glass plate are both white glass with a thickness of 2.1 mm. The outer glass plate and the inner glass plate are connected by an adhesive layer.

[0078] Among them, Examples 1-11 are all transparent glass plate / dielectric layer SiN 30nm~32nm / light absorption layer NiCr 15nm~18nm / high refractive index layer SiN 75nm~78nm / light absorption layer NiCr 13nm~17nm / dielectric sublayer SiN 7nm~8nm / dielectric sublayer SiO2 18nm~20nm.

[0079] In Examples 1-4, the coating layer is disposed in the peripheral area and the middle area of ​​the laminated glass, that is, completely covers one side surface of the laminated glass. In Examples 5-11, the coating layer is disposed in the peripheral area of ​​the laminated glass, that is, partially covers the peripheral area of ​​the laminated glass.

[0080] Table 1: Performance parameters of laminated glass of Examples 1-11

[0081]

[0082] As can be seen from Table 1, the coated glasses in Examples 1-11 all meet the requirements of visible light transmittance TL≤7% and light reflectance RL of 7% to 30%. It can be seen that by arranging the coating layer in the shielding area, the shielding area has a lower visible light transmittance TL and a lower light reflectance RL, which satisfies the shielding function of the ink area in the related art. In addition, since the coating layer of the present application is arranged on the glass plate by high-temperature sintering of the coating, the damage to the glass plate caused by the ink area in the related art can be reduced, the impact resistance of the edge of the laminated glass can be improved, the probability of the laminated glass breaking can be reduced, and the structural strength of the laminated glass can be improved.

[0083] The above is a detailed introduction to the contents provided in the implementation mode of the present application. This article explains and illustrates the principles and implementation modes of the present application. The above explanation is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation mode and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A laminated glass, characterized in that: The laminated glass comprises a first glass plate, an adhesive layer, a second glass plate, and a coating layer, wherein the first glass plate has a first surface and a second surface, the second glass plate has a third surface and a fourth surface, the adhesive layer connects the second surface and the third surface, and the coating layer is disposed on at least one of the second surface, the third surface, and the fourth surface; The laminated glass has a shielding area formed by the coating layer, the shielding area is at least arranged along the edge of the laminated glass, the shielding area has a visible light transmittance TL, the visible light transmittance TL≤7%, and the shielding area has an ultraviolet light transmittance Tuv1 for ultraviolet light, the ultraviolet light transmittance Tuv1≤0.5%.

2. The laminated glass according to claim 1, characterized in that: The visible light transmittance TL≤6%, or TL≤5%, or TL≤4%, or TL≤3%, or TL≤2%, or TL≤1%, or TL≤0.5%.

3. The laminated glass according to claim 1, characterized in that: The ultraviolet light transmittance Tuv1≤0.4%, or Tuv1≤0.3%, or Tuv1≤0.2%, or Tuv1≤0.1%.

4. The laminated glass according to claim 1, characterized in that: Along the laminating direction from the first glass plate to the second glass plate, the outer surface of the laminated glass corresponding to the shielding area has a light reflectivity RL, and the light reflectivity RL is 7% to 30%, or 10% to 25%, or 12% to 20%, or 15% to 20%.

5. The laminated glass according to claim 1, characterized in that: The bonding layer has an ultraviolet light transmittance Tuv2 for ultraviolet light, and the ultraviolet light transmittance Tuv2≤1%, or Tuv2≤0.5%, or Tuv2≤0.1%.

6. The laminated glass according to claim 1, characterized in that: The laminated glass comprises a middle area and a peripheral area arranged at the periphery of the middle area, and the coating layer covers the peripheral area; or the coating layer covers the middle area and the peripheral area.

7. The laminated glass according to claim 6, characterized in that: The peripheral area includes a tensile stress concentration area connected to the edge of the laminated glass, the tensile stress concentration area is located in a size range of 0 to 50 mm in an extending direction from the edge of the laminated glass to the center of the laminated glass, and the coating layer covers the tensile stress concentration area.

8. The laminated glass according to claim 6, characterized in that: The laminated glass is applied to a vehicle, and the vehicle includes a vehicle interior component, wherein the vehicle interior component is arranged on the inner surface of the laminated glass facing the interior of the vehicle, and the vehicle interior component is arranged in the peripheral area. A first distance D1 is provided between the vehicle interior component and the edge of the laminated glass, and a second distance D2 is provided between the end of the coating layer away from the edge of the laminated glass and the edge of the laminated glass, and an absolute value of a difference between the first distance D1 and the second distance D2 is 0 to 5 mm.

9. The laminated glass according to claim 1, characterized in that: The laminated glass further includes a heat insulation layer disposed between the second surface and the third surface.

10. The laminated glass according to claim 9, characterized in that: The orthographic projection of the heat insulation layer on the first surface and the orthographic projection of the coating layer on the first surface at least partially overlap with each other; Alternatively, there is a gap between the orthographic projection of the heat insulation layer on the first surface and the orthographic projection of the coating layer on the first surface.

11. The laminated glass according to claim 1, characterized in that: The laminated glass further includes a low-emissivity layer, and the low-emissivity layer is disposed on at least one of the second surface, the third surface, and the fourth surface.

12. The laminated glass according to claim 11, characterized in that: The emissivity of the low emissivity layer is e≤0.3, or e≤0.25, or e≤0.

2.

13. The laminated glass according to claim 11, characterized in that: The orthographic projection of the low-emissivity layer on the first surface and the orthographic projection of the coating layer on the first surface at least partially overlap with each other; Alternatively, there is a gap between the orthographic projection of the low-emissivity layer on the first surface and the orthographic projection of the coating layer on the first surface.

14. The laminated glass according to any one of claims 1 to 13, characterized in that: The physical thickness of the coating layer is 60nm to 500nm, or 70nm to 400nm, or 70nm to 350nm.

15. The laminated glass according to any one of claims 1 to 13, characterized in that: The coating layer includes at least two light absorbing layers, and the material of the light absorbing layers is selected from at least one of W, Ni, Cr, Ti, Nb, Mo, Si, and Zr.

16. The laminated glass according to claim 15, characterized in that: The coating layer also includes at least one dielectric layer, and the material of the dielectric layer is selected from at least one of Zn, Si, Sn, Ti, Nb, Zr, Hf, Mg, Ni, In, Al, Ga, Bi metal oxides and mixtures thereof, or selected from at least one of Si, Al, Zr, Ti, Y, Hf, Nb, Ta metal nitrides or oxynitrides and mixtures thereof.

17. The laminated glass according to claim 16, characterized in that: The medium layer is disposed between the two light absorbing layers; And / or, the dielectric layer is disposed on a side of the light absorbing layer facing the first glass plate; And / or, the dielectric layer is disposed on a side of the light absorbing layer facing away from the first glass plate.

18. The laminated glass according to claim 16, wherein: The refractive index of the medium layer disposed between the two light absorbing layers is ≥1.8 at a light with a wavelength of 550 nm.

19. The laminated glass according to claim 16, characterized in that: The ratio of the total physical thickness of the visible light absorption layer to the total physical thickness of the dielectric layer is 0.2 to 1.8, or 0.5 to 1.

5.

20. A vehicle, characterized in that: The vehicle comprises a vehicle body, and the laminated glass according to any one of claims 1 to 19, wherein the laminated glass is arranged on the vehicle body.

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