Vehicle window glass and vehicle

Abstract

The embodiment of the invention provides vehicle window glass and a vehicle. The vehicle window glass comprises a glass substrate, the glass substrate is provided with a plurality of film removing areas and a plurality of film coating areas, the film coating areas are connected with the film removing areas, and the maximum tensile stress of the film removing areas is larger than that of the film coating areas; the vehicle window glass further comprises a film coating layer, the film coating layer is arranged on the surface of the glass substrate, and the film coating layer covers the film coating area in the thickness direction of the glass substrate. The vehicle window glass provided by the invention has a relatively large tensile stress area, so that the vehicle window glass has relatively low impact strength and a relatively low HIC value.

Description

Technical Field

[0001] This application relates to the field of glass, specifically to a vehicle window glass and a vehicle. Background Technology

[0002] With the booming development of the social economy and the continuous upgrading of the automotive industry, pedestrian-vehicle collisions caused by right-of-way issues are becoming increasingly serious and their numbers are rising sharply. Pedestrian accidents account for 20% of all traffic accidents, and their fatality rate reaches 30%, with head injuries from impacts to the windshield being the most common. However, the Head Injury Criteria (HIC) is used to assess the degree of head injury to pedestrians caused by the windshield during a collision. Nevertheless, the HIC values ​​of windshields in current technology remain high, indicating that windshields are not easily broken after impact, which is very unfriendly to pedestrians, and the head injuries after a collision remain significant. Summary of the Invention

[0003] This application provides a vehicle window glass with a large tensile stress area, thereby having lower impact resistance and a lower HIC value.

[0004] In a first aspect, embodiments of this application provide a vehicle window glass, the vehicle window glass including a glass substrate, the glass substrate having a plurality of film removal areas and a plurality of coating areas, the coating areas being connected to the film removal areas, and the maximum tensile stress of the film removal areas being greater than the maximum tensile stress of the coating areas;

[0005] The vehicle window glass also includes a coating layer, which is disposed on the surface of the glass substrate and covers the coating area along the thickness direction of the glass substrate.

[0006] Furthermore, the glass substrate includes a first glass layer, an intermediate layer and a second glass layer stacked sequentially. The first glass layer includes a first surface and a second surface disposed opposite to each other. The second glass layer includes a third surface and a fourth surface disposed opposite to each other. The intermediate layer is located between the second surface and the third surface.

[0007] The coating layer is disposed on the second surface and / or the third surface.

[0008] Furthermore, the maximum tensile stress in the membrane removal zone ranges from 1 MPa to 20 MPa.

[0009] Furthermore, the plurality of film removal zones are connected, the plurality of coating zones are spaced apart, and the film removal zones are arranged around the outer periphery of each of the coating zones.

[0010] Furthermore, along the arrangement direction of the film removal area and the film coating area, the distance between two adjacent film coating layers on the surface of the glass substrate is set as w1, where 0mm < w1 < 25mm.

[0011] Furthermore, along the arrangement direction of the film removal area and the film coating area, the distance w1 between two adjacent film coating layers on the surface of the glass substrate is in the range of 10mm≤w1<25mm.

[0012] Furthermore, along the arrangement direction of the film removal area and the film coating area, the distance between the two farthest points of the pattern outline formed by the coating layer on the surface of the glass substrate is set as w2, where 1mm≤w2≤30mm.

[0013] Furthermore, the plurality of coating areas are connected as one unit, the plurality of film removal areas are spaced apart, and the coating areas surround the outer periphery of each film removal area.

[0014] Furthermore, along the arrangement direction of the film removal area and the coating area, the width of the film removal area is set to w1, where 0mm < w1 < 25mm.

[0015] Furthermore, along the arrangement direction of the film removal area and the coating area, the width w1 of the film removal area is in the range of 10mm≤w1<25mm.

[0016] Furthermore, the maximum tensile stress in the membrane removal zone ranges from 7 MPa to 20 MPa.

[0017] Furthermore, the plurality of coating areas are separated and spaced apart, and the plurality of film removal areas are separated and spaced apart.

[0018] Furthermore, the thickness h of the coating layer is in the range of 50nm≤h≤400nm.

[0019] Furthermore, the HIC value of the vehicle window glass is less than or equal to 1000.

[0020] Furthermore, the vehicle window glass includes a transparent area and a shielding area, with the shielding area surrounding the outer periphery of the transparent area;

[0021] The coating area and the film removal area are located in the transparent area and / or the shielding area.

[0022] Furthermore, the visible light transmittance of the transparent area is greater than or equal to 70%, and the visible light transmittance of the shielded area is less than or equal to 5%.

[0023] Furthermore, the vehicle window glass also includes a shielding layer, which is disposed on the surface of the glass substrate and covers the shielding area along the thickness direction of the glass substrate;

[0024] The ultraviolet transmittance of the shielding layer is less than or equal to 0.05%.

[0025] Furthermore, the glass substrate is processed using a single-piece pressing, gravity-forming, or double-piece pressing process.

[0026] Furthermore, the coating layer is a metal layer or a non-metal layer;

[0027] The material used for the metal layer is selected from at least one of silver, copper, and indium tin oxide;

[0028] The non-metallic layer is selected from at least one of silicon dioxide, titanium dioxide, zinc oxide, silicon nitride, titanium nitride, and magnesium fluoride.

[0029] Secondly, embodiments of this application also provide a vehicle, the vehicle comprising:

[0030] Body; and

[0031] The vehicle window glass described in the first aspect of this application is mounted on the vehicle body.

[0032] The reason why car windows are prone to breakage is mainly due to the presence of stress concentration points within the glass. Dangerous defects in car windows (such as cracks, bubbles, and impurities) all constitute stress concentration points. Car window glass is a brittle material; its compressive strength is much higher than its tensile strength (typically, tensile strength is only 1 / 10 of compressive strength). Therefore, tensile stress in car windows is more likely to cause breakage. Tensile stress in car window glass is amplified at the crack tip. When the local tensile stress exceeds the material's theoretical strength, the crack propagates rapidly, leading to fracture. Thus, the greater the tensile stress in a car window, the lower its impact resistance, and the more easily it breaks upon impact. The coating layer of automotive window glass has a higher thermal conductivity than the glass substrate, allowing for faster heat dissipation. During the cooling process after high-temperature annealing, the coated area dissipates heat quickly, resulting in areas with high compressive stress after annealing. Conversely, the decoating area dissipates heat more slowly during the cooling process after high-temperature annealing, resulting in lower compressive stress and thus higher tensile stress. The automotive window glass of this application includes multiple decoating areas and multiple coated areas in the coating layer, with the decoating areas connected to the coated areas. This creates multiple decoating areas with high tensile stress on the window glass. When the window glass is impacted, the high tensile stress in the decoating areas causes cracks to propagate rapidly, making the window glass more prone to breakage, reducing its impact resistance, lowering its HIC value, and improving pedestrian safety. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the planar structure of a vehicle window glass according to an embodiment of this application.

[0035] Figure 2 This is a cross-sectional structural schematic diagram of a vehicle window glass according to an embodiment of this application.

[0036] Figure 3 This is a cross-sectional structural schematic diagram of a vehicle window glass according to an embodiment of this application.

[0037] Figure 4 This is a cross-sectional structural diagram of a vehicle window glass according to another embodiment of this application.

[0038] Figure 5 This is a cross-sectional structural diagram of a vehicle window glass according to another embodiment of this application.

[0039] Figure 6 This is a schematic diagram showing the changes in compressive and tensile stresses within the first or second glass layer after a coating layer is applied to the first or second glass layer according to an embodiment of this application.

[0040] Figure 7 This is a schematic diagram of the planar structure of a vehicle window glass according to an embodiment of this application.

[0041] Figure 8 This is a schematic diagram of the planar structure of a vehicle window glass according to another embodiment of this application.

[0042] Figure 9 This is a schematic diagram of the planar structure of a vehicle window glass according to another embodiment of this application.

[0043] Figure 10 This is a schematic diagram of the planar structure of a vehicle window glass according to another embodiment of this application.

[0044] Figure 11 This is a cross-sectional structural diagram of the coating layer according to an embodiment of this application.

[0045] Figure 12 This is a cross-sectional structural diagram of the coating layer according to another embodiment of this application.

[0046] Figure 13 This is a cross-sectional structural diagram of the coating layer according to another embodiment of this application.

[0047] Figure 14This is a schematic diagram of the planar structure of a vehicle window glass according to another embodiment of this application.

[0048] Figure 15 This is a structural schematic diagram of a vehicle provided in this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 100 - Vehicle window glass, 10a - Glass substrate, 11a - Film removal area, 12a - Coating area, 10 - First glass layer, 11 - First surface, 12 - Second surface, 20 - Intermediate layer, 30 - Second glass layer, 31 - Third surface, 32 - Fourth surface, 40 - Coating layer, 43 - Adhesion layer, 44 - Heat reflective layer, 45 - Outermost dielectric layer, 46 - Barrier layer, 47 - Intermediate dielectric layer, 50 - Transparent area, 60 - Shielding area, 101 - First side, 102 - Second side, 103 - Third side, 104 - Fourth side, 200 - Vehicle, 210 - Vehicle body. Detailed Implementation

[0051] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0052] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0053] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0054] It should be noted that, for ease of explanation, the same reference numerals denote the same components in the embodiments of this application, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0055] With the booming development of the social economy and the continuous upgrading of the automotive industry, pedestrian-vehicle collisions caused by right-of-way issues have become increasingly serious and their numbers have risen sharply. Pedestrian accidents account for 20% of all traffic accidents, and their fatality rate reaches 30%, with head injuries from impacts to the windshield being the most common. The Head Injury Criteria (HIC) is used to assess the degree of head injury to pedestrians caused by the windshield during a collision. However, the HIC value of windshields in current technology remains high, indicating that windshields are not easily broken after impact, which is very unfriendly to pedestrians, and once a collision occurs, the head injury after impact remains significant.

[0056] In related technologies, automotive window glass can be formed using methods such as gravity forming, single-piece pressing, and double-piece pressing. Gravity forming uses relatively simple molds, resulting in lower surface stress and a lower HIC (High Impact Capacity) in the finished window glass; however, it is slow, inefficient, and costly. Double-piece pressing also produces window glass with lower surface stress and a lower HIC; however, it requires complex molds and has high production costs. Single-piece pressing is simple, fast, and inexpensive, making it a popular process for automotive window glass; however, it produces window glass with higher surface compressive stress and a higher HIC, which is particularly harmful to pedestrians when used in vehicle windshields. Therefore, reducing the impact strength and HIC of automotive window glass is crucial.

[0057] Therefore, embodiments of this application provide a vehicle window glass and a vehicle.

[0058] Please see Figure 1 and Figure 2 This application provides a vehicle window glass 100, which includes a glass substrate 10a and a coating layer 40. The glass substrate 10a has a plurality of film removal areas 11a and a plurality of coating areas 12a. The film removal areas 11a are connected to the coating areas 12a. The maximum tensile stress of the film removal areas 11a is greater than the maximum tensile stress of the coating areas 12a. The coating layer is disposed on the surface of the glass substrate 10a and covers the coating areas along the thickness direction of the glass substrate 10a.

[0059] The vehicle window glass 100 of this application embodiment can be applied to a vehicle, serving as at least one of the vehicle's windshield, rear windshield, and side windows (e.g., front side windows and rear side windows). The vehicle in this application can be, but is not limited to, a car, sedan, bus, truck, train, or other means of transportation.

[0060] Understandably, the maximum compressive stress in the film removal area 11a is less than the maximum compressive stress in the coating area 12a.

[0061] Understandably, the defilming region 11a does not have the coating layer 40, while the coating region 12a has the coating layer 40.

[0062] It should be noted that during the preparation of the coating layer 40, the entire surface can be coated first, and then the coating can be removed at the corresponding removal area 11a of the glass substrate 10a. Optionally, the coating removal method can be, but is not limited to, masking removal (i.e., a masking layer is set at the corresponding position during coating, and the masking layer is removed after coating is completed, thereby achieving coating removal) or laser removal.

[0063] The reason why car window glass 100 is easily broken is mainly due to the presence of stress concentration points within it. Dangerous defects in the car window glass 100 (such as cracks, bubbles, and impurities) are considered stress concentration points. Car window glass 100 is a brittle material; its compressive strength is much higher than its tensile strength (typically, tensile strength is only 1 / 10 of compressive strength). Therefore, the tensile stress on the car window glass 100 is more likely to cause it to break. The tensile stress on the car window glass 100 is amplified at the crack tip. When the local tensile stress exceeds the material's theoretical strength, the crack propagates rapidly, leading to fracture. Therefore, the greater the tensile stress on the car window glass 100, the worse its impact resistance, and the more easily it breaks upon impact. The coating layer 40 of the window glass 100 has a higher thermal conductivity than the glass substrate 10a, which allows for faster heat dissipation. During the cooling process after the window glass 100 undergoes high-temperature annealing, the coating area 12a dissipates heat faster, resulting in a region with relatively high compressive stress after annealing. Conversely, the decoating area 11a dissipates heat more slowly during the cooling process after high-temperature annealing, resulting in less compressive stress and thus a region with relatively high tensile stress. The vehicle window glass 100 of this application includes a coating layer 40 comprising a plurality of decoating areas 11a and a plurality of coating areas 12a, wherein the decoating areas 11a are connected to the coating areas 12a. This results in a plurality of decoating areas 11a with large tensile stress distributed on the vehicle window glass 100. When the vehicle window glass 100 is impacted, the large tensile stress on the decoating areas 11a will cause the crack to propagate rapidly, making the vehicle window glass 100 more prone to breakage, reducing the impact resistance of the vehicle window glass 100, thereby reducing the HIC value of the vehicle window glass 100 and improving the safety of the vehicle window glass 100 for pedestrians.

[0064] In some embodiments, the glass substrate 10a comprises a monolithic glass layer.

[0065] Please see Figures 3 to 5In other embodiments, the glass substrate 10a includes a first glass layer 10, an intermediate layer 20 and a second glass layer 30 stacked sequentially. The first glass layer 10 has a first surface 11 and a second surface 12 disposed opposite to each other. The second glass layer 30 has a third surface 31 and a fourth surface 32 disposed opposite to each other. The intermediate layer 20 is located between the second surface 12 and the third surface 31. The coating layer 40 is disposed on the second surface 12 and / or the third surface 31.

[0066] Optionally, the coating layer 40 is disposed between the first glass layer 10 and the intermediate layer 20, between the intermediate layer 20 and the second glass layer 30, and on the surface of the second glass layer 30 facing away from the intermediate layer 20.

[0067] It should be noted that when the window glass 100 is installed in the vehicle, the first glass layer 10 faces outwards and the second glass layer 30 faces inwards. When the window glass 100 is installed in the vehicle, the surface of the first glass layer 10 that faces away from the second glass layer 30 is the outer surface of the window glass 100, and the surface of the second glass layer 30 that faces away from the first glass layer 10 is the outer surface of the window glass 100.

[0068] Understandably, the first surface 11 is away from the intermediate layer 20, the second surface 12 faces the intermediate layer 20, the third surface 31 faces the intermediate layer 20, and the fourth surface 32 is away from the intermediate layer 20.

[0069] It should be noted that the coating layer 40 can be disposed on at least one of the second surface 12, the third surface 31, and the fourth surface 32. For example, the coating layer 40 is disposed on the second surface 12, that is, the coating layer 40 is located between the first glass layer 10 and the intermediate layer 20; in other words, the first glass layer 10, the coating layer 40, the intermediate layer 20, and the second glass layer 30 are stacked sequentially. For another example, the coating layer 40 is disposed on the third surface 31, that is, the coating layer 40 is located between the second glass layer 30 and the intermediate layer 20; in other words, the first glass layer 10, the intermediate layer 20, the coating layer 40, and the second glass layer 30 are stacked sequentially. For yet another example, the coating layer 40 is disposed on the fourth surface 32, that is, the coating layer 40 is located on the surface of the second glass layer 30 facing away from the intermediate layer 20; in other words, the first glass layer 10, the intermediate layer 20, the second glass layer 30, and the coating layer 40 are stacked sequentially. Alternatively, the coating layer 40 is disposed on the second surface 12 and the third surface 31. Alternatively, the coating layer 40 is disposed on the second surface 12 and the fourth surface 32. Alternatively, the coating layer 40 is disposed on the third surface 31 and the fourth surface 32. Alternatively, the coating layer 40 is disposed on the second surface 12, the third surface 31, and the fourth surface 32.

[0070] The Head Injury Index (HIC) of a vehicle window 100 can be calculated using the following formula:

[0071]

[0072] Where a is the measured resultant acceleration, in g (1g = 9.81 m / s²). 2 ); t1 and t2 are two arbitrary moments (in seconds) when the car window glass 100 is impacted, and t2-t1 represents a time interval between the start and end of the recording. HIC takes the maximum value within this time interval, and t2-t1≤15ms.

[0073] If a pedestrian's head is struck by a car window 100, and the window does not break, the pedestrian's head will suffer a severe head injury from the enormous impact. If the window breaks, the impact on the pedestrian's head will be reduced, thus minimizing the injury. A lower HIC value indicates lower impact resistance of the car window 100, resulting in less head injury when it strikes the pedestrian.

[0074] Generally, the HIC value of the vehicle window glass 100 in the head shape testing area should not exceed 1700 (i.e., less than 1700), and at least two-thirds of the head shape testing area should have an HIC value not exceeding 1000 (i.e., less than 1000), and at least half of the children's head shape testing area should have an HIC value not exceeding 1000 (i.e., less than 1000). When the vehicle window glass 100 is used in the windshield of a vehicle, if the HIC value of the entire surface of the vehicle window glass 100 exceeds 1000, it is not very pedestrian-friendly. When a pedestrian's head hits the vehicle window glass 100, the vehicle window glass 100 is unlikely to break, which can easily cause serious head injuries to pedestrians.

[0075] A schematic diagram illustrating the changes in compressive and tensile stress within the first glass layer 10 or the second glass layer 30 after a coating layer 40 is applied to the first glass layer 10 or the second glass layer 30 according to an embodiment of this application is shown below. Figure 6 As shown. Figure 6 The surface of the first glass layer 10 or the second glass layer 30 (i.e., the area outside the dashed line) is subjected to compressive stress, and the area inside the dashed line is subjected to tensile stress. Figure 6 The intermediate tensile stress is represented by the symbol "+". Figure 6 In the diagram, the wavy line in the dashed section corresponds to the position of the peak where the film removal zone 11a has the maximum tensile stress. Figure 6 It can be seen that the tensile stress gradually increases from the edge of the coating area 12a to the position away from the coating area 12a.

[0076] Optionally, the HIC value of the vehicle window glass is less than or equal to 1000. This makes it easier for the vehicle window glass 100 to break when a pedestrian's head hits the windshield of a vehicle, thus reducing the risk of serious injury to the pedestrian's head.

[0077] In some embodiments, the maximum tensile stress in the membrane removal region 11a ranges from 1 MPa to 20 MPa.

[0078] In the embodiments of this application, when the numerical range a to b is involved, unless otherwise specified, it means that the numerical value can be any value between a and b, including the endpoint value a and the endpoint value b.

[0079] Specifically, the maximum tensile stress in the membrane removal zone 11a can be, but is not limited to, 1 MPa, 2 MPa, 4 MPa, 5 MPa, 6 MPa, 8.1 MPa, 8.3 MPa, 8.5 MPa, 8.8 MPa, 9.0 MPa, 9.2 MPa, 10 MPa, 11 MPa, 12 MPa, 13 MPa, 14 MPa, 15 MPa, 16 MPa, 17 MPa, 18 MPa, 18.8 MPa, 20 MPa, etc.

[0080] In this embodiment, if the maximum tensile stress of the film removal area 11a is too small, the reduction in the impact resistance of the window glass 100 will be limited, which is not conducive to reducing the HIC of the window glass 100; if the maximum tensile stress of the film removal area 11a is too large, the impact resistance of the window glass 100 will be too low, and it will break under relatively low external force or impact force, affecting the normal use of the window glass 100.

[0081] Furthermore, the maximum tensile stress in the film removal zone 11a ranges from 7 MPa to 20 MPa. This gives the window glass 100 a more suitable impact resistance and a more appropriate HIC value, enabling it to withstand certain impact forces. When applied to vehicles, it can also break even in the event of a vehicle accident, thus improving the safety of pedestrians when using the window glass 100.

[0082] Furthermore, the maximum tensile stress in the film removal zone 11a ranges from 8.1 MPa to 20 MPa. This gives the window glass 100 a more suitable impact resistance and a more appropriate HIC value, enabling it to withstand certain impact forces. When applied to vehicles, it can break even in the event of a vehicle accident, thus improving the safety of pedestrians when using the window glass 100.

[0083] Furthermore, the maximum tensile stress in the film removal zone 11a ranges from 9.2 MPa to 20 MPa. This gives the window glass 100 a more suitable impact resistance and a more appropriate HIC value, enabling it to withstand certain impact forces. When applied to vehicles, it can break even in the event of a vehicle accident, thus improving the safety of pedestrians when using the window glass 100.

[0084] Please see Figure 1 , Figures 7 to 9 In some embodiments, the vehicle window glass 100 has a first side 101, a second side 102, a third side 103, and a fourth side 104 arranged sequentially and connected end-to-end along its circumference. The first side 101 and the third side 103 are arranged opposite to each other, and the second side 102 and the fourth side 104 are arranged opposite to each other. In some embodiments, a plurality of coating areas 12a are spaced apart along the extending directions of the first side 101, the second side 102, the third side 103, and the fourth side 104; it can be understood that the plurality of coating areas 12a are spaced apart along the circumference of the vehicle window glass 100. In other embodiments, the coating areas 12a and the film removal areas 11a may also be arranged alternately in other directions. The accompanying drawings of this application only illustrate one or more arrangement methods and should not be construed as limiting the vehicle window glass 100 of the embodiments of this application.

[0085] Please see Figures 7 to 9 In some embodiments, the plurality of film removal areas 11a are connected, the plurality of coating areas 12a are spaced apart, and the film removal areas 11a surround the outer periphery of each of the coating areas 12a.

[0086] Understandably, the coating area 12a is embedded within the film removal area 11a. That is, each coating area 12a is an independent coating section, meaning that the coating layer 40 includes multiple coating sections, which are spaced apart.

[0087] In this embodiment, by alternating multiple coating areas, the window glass 100 can have a more suitable impact resistance and a more suitable HIC value, which can resist a certain impact force. When applied to a vehicle, it can break evenly in the event of a vehicle accident, thus improving the safety of the window glass 100 for pedestrians.

[0088] Please see again Figures 7 to 9 In some embodiments, along the arrangement direction of the film removal area 11a and the film coating area 12a, the spacing between two adjacent film coating layers 40 on the surface of the glass substrate 10a is set to w1, where 0mm < w1 < 25mm.

[0089] Specifically, along the arrangement direction of the film removal area 11a and the coating area 12a, the spacing w1 between two adjacent coating layers 40 on the surface of the glass substrate 10a can be, but is not limited to, 0.1mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 24.9mm, etc.

[0090] The inventors discovered through research that the location of the maximum tensile stress formed in the film removal area 11a is approximately 10 mm away from the edge of the coating layer 40. Therefore, by setting two adjacent coating layers 40 at an appropriate distance, that is, by allowing the film removal area 11a between two adjacent coating layers 40 to have an appropriate width, the tensile stress generated by the two adjacent coating layers 40 in the film removal area 11a between them can be superimposed, thereby better improving the maximum tensile stress in the film removal area 11a of the window glass 100 and reducing the HIC of the window glass 100. Therefore, if the distance w1 between two adjacent coating layers 40 on the surface of the glass substrate 10a is too small, the position of the maximum tensile stress generated by one of the two adjacent coating layers 40 will be on the other coating layer 40. The maximum tensile stress generated by the two adjacent coating layers 40 cannot be superimposed, which reduces the effect of setting multiple film removal areas 11a on improving the maximum tensile stress of the window glass 100. That is, it is not conducive to reducing the maximum tensile stress of the film removal area 11a of the window glass 100, and it is not conducive to reducing the HIC of the window glass 100. If the distance w1 between two adjacent coating layers 40 on the surface of the glass substrate 10a is too wide, although the positions of the maximum tensile stress generated by the two adjacent coating layers 40 are both on the film removal area 11a between them, the positions of the two maximum tensile stresses are still staggered, and the two maximum tensile stresses cannot be superimposed. This also reduces the effect of setting multiple film removal areas 11a on improving the maximum tensile stress of the window glass 100, that is, it is not conducive to reducing the maximum tensile stress of the film removal area 11a of the window glass 100, and it is not conducive to reducing the HIC of the window glass 100.

[0091] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the distance w1 between two adjacent coating layers 40 on the surface of the glass substrate 10a is in the range of 4mm ≤ w1 < 25mm. This allows the tensile stress generated by two adjacent coating layers 40 in the film removal area 11a to be better superimposed, forming a larger tensile stress, weakening the strength of the window glass 100, and thus better reducing the impact resistance and HIC of the window glass 100.

[0092] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the distance w1 between two adjacent coating layers 40 on the surface of the glass substrate 10a is in the range of 5mm ≤ w1 < 25mm. This allows the tensile stress generated by two adjacent coating layers 40 in the film removal area 11a to be better superimposed, forming a larger tensile stress, weakening the strength of the window glass 100, and thus better reducing the impact resistance and HIC of the window glass 100.

[0093] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the distance w1 between two adjacent coating layers 40 on the surface of the glass substrate 10a is in the range of 10mm ≤ w1 < 25mm. This allows the tensile stress generated by two adjacent coating layers 40 in the film removal area 11a to be better superimposed, forming a larger tensile stress, weakening the strength of the window glass 100, and thus better reducing the impact resistance and HIC of the window glass 100.

[0094] Please see again Figures 7 to 9 In some embodiments, along the arrangement direction of the film removal area 11a and the film coating area 12a, the distance between the two farthest points of the pattern outline formed by the coating layer 40 on the surface of the glass substrate 10a is set as w2, where 1mm≤w2≤30mm.

[0095] Understandably, along the arrangement direction of the film removal area 11a and the coating area 12a, the maximum width w2 of the coating layer 40 is in the range of 1mm≤w2≤30mm.

[0096] Specifically, the width w2 of the coating area 12a can be, but is not limited to, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, etc.

[0097] In this embodiment, if the width w2 of the coating layer 40 is too small, the coating layer 40 will have limited effect on improving the heat dissipation rate during the annealing and cooling process of the window glass 100, resulting in low compressive stress. Consequently, the compressive stress difference between the coating layer 40 and the decoating area 11a will be too small, and the tensile stress generated in the decoating area 11a will be too small. This is not conducive to improving the tensile stress of the decoating area 11a of the window glass 100, nor is it conducive to reducing the impact resistance of the window glass 100. The reduction in the HIC of the window glass 100 will be limited. In addition, when the decoating area 11a is located in the transparent area of ​​the window glass 100, the area covered by the decoating area 11a is too small, reducing the heat reflection of the decoating area 11a, which is not conducive to reducing the temperature inside the vehicle using the window glass 100. If the width w2 of the coating layer 40 is too wide, the number of decoating areas 11a that can be set in the limited-size window glass 100 will be small, which is also not conducive to reducing the impact resistance of the window glass 100 and reducing the HIC of the window glass 100.

[0098] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the distance w2 between the two farthest points of the pattern outline formed by the coating layer 40 on the surface of the glass substrate 10a is in the range of 5mm ≤ w2 ≤ 30mm. This can better improve the tensile stress of the film removal area 11a of the window glass 100, so that the window glass 100 has more film removal areas 11a (i.e., more impact-resistant weak points), which can better reduce the impact resistance of the window glass 100 and better reduce the HIC of the window glass 100.

[0099] Please see Figure 10 In other embodiments, the plurality of coating areas 12a are connected as one unit, the plurality of film removal areas 11a are spaced apart, and the coating areas 12a are arranged around the outer periphery of each of the film removal areas 11a.

[0100] Understandably, the film removal area 11a is embedded within the coating area 12a. That is, the coating layer 40 forms an independent hollow portion corresponding to the position of the film removal area 11a.

[0101] In this embodiment, by alternating multiple film removal zones, the vehicle window glass 100 can have a more suitable impact resistance and a more suitable HIC value, which can resist a certain impact force. When applied to a vehicle, it can break evenly in the event of a vehicle accident, thus improving the safety of the vehicle window glass 100 for pedestrians.

[0102] Please see Figure 10 In some embodiments, along the arrangement direction of the film removal area 11a and the coating area 12a, the width of the film removal area is set to w1, where 0mm < w1 < 25mm.

[0103] Specifically, along the arrangement direction of the film removal area 11a and the coating area 12a, the width w1 of the film removal area can be, but is not limited to, 0.1mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 24.9mm, etc.

[0104] The inventors discovered that the location of the maximum tensile stress in the removal zone 11a is approximately 10mm from the edge of the coating layer 40. Therefore, by ensuring an appropriate width for the removal zone 11a between two adjacent coating layers 40, the tensile stresses generated by the two adjacent coating layers 40 in the removal zone 11a can be superimposed, thereby better improving the maximum tensile stress in the removal zone 11a of the window glass 100 and reducing the HIC of the window glass 100. Conversely, if the width w1 of the removal zone is too small, the location of the maximum tensile stress generated by one of the two adjacent coating layers 40 will be on the other coating layer 40, and the maximum tensile stresses generated by the two adjacent coating layers 40 cannot be superimposed. This reduces the effect of multiple removal zones 11a on improving the maximum tensile stress of the window glass 100, thus hindering the reduction of the maximum tensile stress in the removal zone 11a of the window glass 100 and consequently reducing the HIC of the window glass 100. If the width of the decoction area is set to w1, which is too wide, although the positions of the maximum tensile stress generated by the two adjacent coating layers 40 are both on the decoction area 11a between them, the positions of the two maximum tensile stresses are still staggered, and the two maximum tensile stresses cannot be superimposed. This also reduces the effect of setting multiple decoction areas 11a on improving the maximum tensile stress of the window glass 100, that is, it is not conducive to reducing the maximum tensile stress of the decoction area 11a of the window glass 100, and it is not conducive to reducing the HIC of the window glass 100.

[0105] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the width w1 of the film removal area is in the range of 4mm ≤ w1 < 25mm. This allows the tensile stress generated by two adjacent coating layers 40 in the film removal area 11a to be better superimposed, forming a larger tensile stress, weakening the strength of the window glass 100, and thus better reducing the impact resistance and HIC of the window glass 100.

[0106] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the width w1 of the film removal area is in the range of 5mm ≤ w1 < 25mm. This allows the tensile stress generated by two adjacent coating layers 40 in the film removal area 11a to be better superimposed, forming a larger tensile stress, weakening the strength of the window glass 100, and thus better reducing the impact resistance and HIC of the window glass 100.

[0107] Furthermore, along the arrangement direction of the film removal area 11a and the coating area 12a, the width w1 of the film removal area is in the range of 10mm ≤ w1 < 25mm. This allows the tensile stress generated by two adjacent coating layers 40 in the film removal area 11a to be better superimposed, forming a larger tensile stress, weakening the strength of the window glass 100, and thus better reducing the impact resistance and HIC of the window glass 100.

[0108] In some other embodiments, the plurality of coating areas 12a are separated and spaced apart, and the plurality of film removal areas 11a are separated and spaced apart.

[0109] Compared to the scheme in which the film removal area 11a surrounds the outer periphery of each of the coating areas 12a, the coating area covered by the coating is larger in the scheme in which the coating area 12a surrounds the outer periphery of each of the film removal areas 11a. Thus, when the film removal area 11a is located in the transparent area, the window glass 100 can reflect more heat, thereby having a better heat insulation effect.

[0110] Optionally, the shape of the film removal area 11a can be, but is not limited to, at least one of a rectangle, a triangle, an ellipse, etc. When the shape of the film removal area 11a is rectangular, the spacing between two adjacent coating areas 12a is equal, which allows for more areas with greater tensile stress on the film removal area 11a, thus better reducing the impact resistance of the window glass 100 and lowering the HIC of the window glass 100.

[0111] Please see again Figure 5 In some embodiments, the thickness h of the coating layer 40 is in the range of 50nm ≤ h ≤ 400nm.

[0112] Understandably, along the stacking direction of the first glass layer 10, the intermediate layer 20 and the second glass layer 30, the thickness h of the coating layer 40 is in the range of 50nm≤h≤400nm.

[0113] Specifically, the thickness h of the coating layer 40 can be, but is not limited to, 50nm, 60nm, 70nm, 80nm, 90nm, 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, 160nm, 170nm, 180nm, 190nm, 200nm, 210nm, 220nm, 230nm, 240nm, 250nm, 260nm, 270nm, 280nm, 290nm, 300nm, 310nm, 320nm, 330nm, 340nm, 350nm, 360nm, 370nm, 380nm, 390nm, 400nm, etc.

[0114] In this embodiment, if the thickness h of the coating layer 40 is too thin, the coating layer 40 can reflect too little heat, reducing the heat insulation effect of the coating layer 40; if the thickness h of the coating layer 40 is too thick, the coating production line needs to be set up to be longer, increasing the difficulty of the coating process and increasing the coating cost.

[0115] In some embodiments, the glass substrate 10a is processed by single-piece pressing, gravity forming, or double-piece pressing. The solution of this application is applicable to glass substrates 10a manufactured using various processes, exhibiting good adaptability.

[0116] In some embodiments, the coating layer 40 is a metal layer or a non-metal layer. The material used for the metal layer is selected from at least one of silver, copper, and indium tin oxide; the non-metal layer is selected from at least one of silicon dioxide, titanium dioxide, zinc oxide, silicon nitride, titanium nitride, and magnesium fluoride.

[0117] Please see Figure 11 Optionally, the coating layer 40 includes an adhesion layer 43, a heat-reflective layer 44, and an outermost dielectric layer 45. The adhesion layer 43 is disposed between the heat-reflective layer 44 and the first glass layer 10 or the second glass layer 30 to improve the adhesion of the heat-reflective layer 44 to the first glass layer 10 or the second glass layer 30. The outermost dielectric layer 45 is disposed on the side of the heat-reflective layer 44 away from the adhesion layer 43 to protect the heat-reflective layer 44. In a specific example, along the stacking direction of the first glass layer 10 and the second glass layer 30, the coating layer 40 includes the adhesion layer 43, the heat-reflective layer 44, and the outermost dielectric layer 45 stacked sequentially.

[0118] Optionally, the number of heat-reflective layers 44 can be one or more, for example, the number of heat-reflective layers 44 can be, but is not limited to, one, two, three, four, or five layers. Optionally, the heat-reflective layer 44 can include at least one of a metal film layer and a non-metal film layer. The metal or non-metal film layer can also be printed with conductive silver paste or ink to reflect heat.

[0119] Please see Figure 12 Optionally, when the number of heat-reflective layers 44 is multiple, the coating layer 40 further includes a barrier layer 46, which is disposed between any two adjacent heat-reflective layers 44. In a specific example, along the stacking direction of the first glass layer 10 and the second glass layer 30, the coating layer 40 includes an adhesion layer 43, a heat-reflective layer 44, a barrier layer 46, another heat-reflective layer 44, a barrier layer 46, another heat-reflective layer 44, and an outermost dielectric layer 45, which are stacked sequentially.

[0120] Please see Figure 13 Optionally, when the number of heat-reflective layers 44 is multiple, the coating layer 40 further includes a barrier layer 46 and an intermediate dielectric layer 47. The barrier layer 46 is disposed between any two adjacent heat-reflective layers 44, and the intermediate dielectric layer 47 is disposed between the barrier layer 46 and the heat-reflective layer 44. In a specific example, along the stacking direction of the first glass layer 10 and the second glass layer 30, the coating layer 40 includes an adhesion layer 43, a heat-reflective layer 44, a barrier layer 46, an intermediate dielectric layer 47, a heat-reflective layer 44, a barrier layer 46, and an outermost dielectric layer 45, which are stacked sequentially.

[0121] Optionally, the adhesion layer 43 can be a single layer or a multi-layer structure. The adhesion layer 43 may include, but is not limited to, at least one of Si3N4, SiAlZrNx, and aluminum zinc oxide (AZO).

[0122] Optionally, the heat-reflective layer 44 can be a single layer or a multi-layer structure. The heat-reflective layer 44 may include, but is not limited to, at least one of Ag, aluminum zinc oxide (AZO), copper, etc.

[0123] Optionally, the barrier layer 46 may include, but is not limited to, at least one of NiCrOx, ZnSnOx, etc.

[0124] Optionally, the intermediate dielectric layer 47 can be a single layer or a multilayer structure. The intermediate dielectric layer 47 may include, but is not limited to, at least one of ZnSnOx, aluminum zinc oxide (AZO), etc.

[0125] Optionally, the outermost dielectric layer 45 can be a single layer or a multilayer structure. The outermost dielectric layer 45 may include, but is not limited to, at least one of ZnSnOx, aluminum zinc oxide (AZO), Si3N4, SiAlZrNx, etc.

[0126] In addition, the coating layer 40 may also include at least one of indium tin oxide, silicon dioxide, titanium dioxide, zinc oxide, silicon nitride, titanium nitride, magnesium fluoride, etc.

[0127] Optionally, the coating layer 40 can be prepared using, but not limited to, processes such as magnetron sputtering physical vapor deposition (PVD) or chemical vapor deposition (CVD).

[0128] Optionally, the first glass layer 10 can be transparent glass or tinted glass. Optionally, when the first glass layer 10 is transparent glass, the total iron content (calculated as Fe2O3) of the first glass layer 10 is ≤0.1%, ≤0.05%, or ≤0.01%. If the total iron content of the first glass layer 10 is too high, the color of the first glass layer 10 will be too dark, and the visible light transmittance will be too low, which is not conducive to reducing the emissivity of the vehicle window glass 100.

[0129] Optionally, the thickness of the first glass layer 10 ranges from 1.1 mm to 3.5 mm; specifically, the thickness of the first glass layer 10 can be, but is not limited to, 1.1 mm, 1.3 mm, 1.5 mm, 1.8 mm, 2.1 mm, 2.3 mm, 2.5 mm, 2.8 mm, 3.1 mm, 3.3 mm, 3.5 mm, etc.

[0130] Optionally, the visible light transmittance of the first glass layer 10 is greater than or equal to 70%; specifically, the visible light transmittance of the first glass layer 10 can be, but is not limited to, 70%, 75%, 80%, 85%, 90%, 95%, 96%, 98%, etc.

[0131] Optionally, the second glass layer 30 can be transparent glass or tinted glass. Optionally, when the second glass layer 30 is transparent glass, the total iron content (calculated as Fe2O3) of the second glass layer 30 is ≤0.1%, ≤0.05%, or ≤0.01%. If the total iron content of the second glass layer 30 is too high, the color of the second glass layer 30 will be too dark, and the visible light transmittance will be too low, which is not conducive to reducing the emissivity of the vehicle window glass 100.

[0132] Optionally, the thickness of the second glass layer 30 ranges from 0.5 mm to 2.6 mm; specifically, the thickness of the second glass layer 30 can be, but is not limited to, 0.5 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.1 mm, 1.3 mm, 1.5 mm, 1.8 mm, 2.1 mm, 2.3 mm, 2.5 mm, 2.6 mm, etc.

[0133] Optionally, the visible light transmittance of the second glass layer 30 is greater than or equal to 70%; specifically, the visible light transmittance of the second glass layer 30 can be, but is not limited to, 70%, 75%, 80%, 85%, 90%, 95%, 96%, 98%, etc.

[0134] Optionally, the thickness of the first glass layer 10 and the thickness of the second glass layer 30 can be the same or different.

[0135] Optionally, the intermediate layer 20 can be a single-layer structure or a multi-layer structure. When the intermediate layer 20 is a multi-layer structure, multiple membrane layers are stacked sequentially.

[0136] Optionally, the intermediate layer 20 may have an adhesive function. That is, the intermediate layer 20 includes an adhesive layer. Optionally, the adhesive layer may be, but is not limited to, a thermoplastic polymer film. Optionally, the material of the adhesive layer may be, but is not limited to, at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionic polymer (SGP).

[0137] Optionally, the intermediate layer 20 may also include at least one of the following: a sound insulation layer, a colored transparent layer, an ultraviolet blocking layer, and an infrared blocking layer.

[0138] For example, the intermediate layer 20 includes two adhesive layers and one sound insulation layer, with the adhesive layer, sound insulation layer and adhesive layer stacked in sequence.

[0139] Optionally, the thickness of the intermediate layer 20 ranges from 0.38 mm to 2.28 mm. Further, the thickness of the intermediate layer 20 ranges from 0.76 mm to 1.52 mm. Specifically, the thickness of the intermediate layer 20 can be, but is not limited to, 0.38 mm, 0.5 mm, 0.76 mm, 0.9 mm, 1.0 mm, 1.14 mm, 1.3 mm, 1.52 mm, 1.7 mm, 1.9 mm, 2 mm, 2.1 mm, or 2.28 mm, etc.

[0140] In some embodiments, the visible light transmittance of the intermediate layer 20 is greater than or equal to 70%. Further, the visible light transmittance of the intermediate layer 20 is greater than or equal to 80%. Specifically, the visible light transmittance of the intermediate layer 20 can be, but is not limited to, 70%, 72%, 74%, 76%, 78%, 80%, 82%, 84%, 86%, 88%, 90%, 92%, 94%, 96%, 98%, etc. In this embodiment, if the visible light transmittance of the intermediate layer 20 is too low, a dark-colored intermediate layer 20 is required. A dark-colored intermediate layer 20 has a higher cost, which is detrimental to reducing the manufacturing cost of the vehicle window glass 100. Furthermore, if the visible light transmittance of the intermediate layer 20 is too low, when the vehicle window glass 100 is applied to the windshield, it reduces the clarity of the windshield display, which is detrimental to safe driving.

[0141] Optionally, the thickness of the window glass 100 ranges from 2.3mm to 8.0mm. Specifically, the thickness of the window glass 100 can be, but is not limited to, 2.3mm, 2.5mm, 2.8mm, 3.0mm, 3.3mm, 3.5mm, 3.8mm, 4.0mm, 4.3mm, 4.5mm, 4.8mm, 5.0mm, 5.3mm, 5.5mm, 5.8mm, 6.0mm, 6.3mm, 6.5mm, 6.8mm, 7.0mm, 7.3mm, 7.5mm, 7.8mm, and 8.0mm.

[0142] Please see Figure 14 In some embodiments, the vehicle window glass 100 includes a transparent area 50 and a shielding area 60, the shielding area 60 being disposed around the outer periphery of the transparent area 50, and the plurality of film removal areas 11a being disposed in the transparent area 50 and / or the shielding area 60.

[0143] For example, multiple film removal areas 11a are provided only in the transparent area 50. Also for example, multiple film removal areas 11a are provided only in the shielding area 60. Yet another example, a portion of the multiple film removal areas 11a is provided in the transparent area 50, and another portion is provided in the shielding area 60.

[0144] Understandably, the visible light transmittance of the transparent area 50 is greater than that of the shielded area 60.

[0145] In this embodiment, the vehicle window glass 100 includes a transparent area 50 and a shielding area 60. The shielding area 60 surrounds the outer periphery of the transparent area 50, and the visible light transmittance of the transparent area 50 is greater than that of the shielding area 60. This allows the vehicle window glass 100 to have a better appearance, and the shielding area 60 can better protect the internal components of the vehicle and improve local adhesion.

[0146] Optionally, the visible light transmittance of the transparent area 50 is greater than or equal to 70%. Specifically, the visible light transmittance of the transparent area 50 can be, but is not limited to, 70%, 72%, 74%, 76%, 78%, 80%, 82%, 84%, 86%, 88%, 90%, 92%, 94%, 96%, 98%, etc. If the visible light transmittance of the transparent area 50 is too low, it will be detrimental to viewing the external environment through the window glass 100, and when the window glass 100 is used as the windshield of a vehicle, it will be detrimental to safe driving. If the visible light transmittance of the transparent area 50 is too high, it will increase the cost and manufacturing difficulty of the window glass 100.

[0147] Optionally, the visible light transmittance of the shaded area 60 is less than or equal to 5%. Specifically, the visible light transmittance of the shaded area 60 can be, but is not limited to, 5%, 4.5%, 4%, 3.5%, 3%, 2.5%, 2%, 1.5%, 1%, etc. Excessively high visible light transmittance of the shaded area 60 is detrimental to improving the appearance of the window glass 100, protecting the internal components of the vehicle, and improving local adhesion.

[0148] Optionally, the vehicle window glass 100 further includes a shielding layer (not shown), which is disposed in the shielding area 60 to reduce the visible light transmittance of the shielding area 60. Optionally, the shielding layer may be formed by printing or other methods and surrounding the outer periphery of the second surface 12, the third surface 31, and the fourth surface 32. Optionally, the shielding layer has a dark color, such as at least one of black, brown, or tan. Optionally, the ultraviolet transmittance of the shielding layer is ≤0.05%.

[0149] The following detailed description of the vehicle window glass 100 according to an embodiment of this application will further illustrate this application.

[0150] Example 1

[0151] The vehicle window glass 100 of this embodiment includes a first glass layer 10, a coating layer 40, an intermediate layer 20 and a second glass layer 30 stacked in sequence; the coating layer 40 includes a plurality of film removal areas 11a and a plurality of coating areas 12a, and the film removal areas 11a and the coating areas 12a are alternately arranged.

[0152] The thickness of the first glass layer 10 and the second glass layer 30 is 2.1 mm, and the intermediate layer 20 is a PVB layer with a thickness of 0.76 mm.

[0153] Along the arrangement direction of the film removal area 11a and the coating area 12a, the width of the film removal area 11a is 1 mm; the width of the coating area 12a is 20 mm.

[0154] The coating layer 40 includes an adhesion layer 43 (Si3N4 30nm + AZO 7nm), a heat-reflective layer 44 (Ag 10nm), a barrier layer 46 (NiCrOx 2nm), an intermediate dielectric layer 47 (AZO 8nm + ZnSnOx 71nm + AZO 7nm), a heat-reflective layer 44 (Ag 8.5nm), a barrier layer 46 (NiCrOx 2nm), and an outermost dielectric layer 45 (AZO 8nm + Si3N4 27nm); the adhesion layer 43 is disposed on the surface of the first glass layer 10 facing the intermediate layer 20.

[0155] Example 2

[0156] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 2mm.

[0157] Example 3

[0158] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 3mm.

[0159] Example 4

[0160] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 4mm.

[0161] Example 5

[0162] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 5mm.

[0163] Example 6

[0164] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 10mm.

[0165] Example 7

[0166] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 15mm.

[0167] Example 8

[0168] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 20mm.

[0169] Example 9

[0170] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 21 mm.

[0171] Example 10

[0172] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 22mm.

[0173] Example 11

[0174] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 23mm.

[0175] Example 12

[0176] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 24 mm.

[0177] Example 13

[0178] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 25mm.

[0179] Example 14

[0180] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 30mm.

[0181] Example 15

[0182] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 35mm.

[0183] Example 16

[0184] The difference between this embodiment and Embodiment 1 is that the width of the film removal area 11a in this embodiment is 40mm.

[0185] Comparative Example 1

[0186] The vehicle window glass 100 in each embodiment includes a first glass layer 10, an intermediate layer 20, a coating layer 40 and a second glass layer 30 stacked sequentially; the coating layer 40 covers the entire surface of the second glass layer 30 facing the intermediate layer 20;

[0187] The coating layer 40 in this comparative example is the same as the coating layer 40 in Example 1.

[0188] The stress values ​​of the stress bands in the decoction area 11a of the vehicle window glass 100 of each embodiment were tested according to GB / T 18144 "Glass Stress Test Method". Table 1 below shows the stress values ​​of the decoction area 11a of each embodiment.

[0189] Table 1 Performance parameters of the vehicle window glass 100 in each embodiment and comparative example

[0190]

[0191] The test results of Comparative Example 1 show that when the coating layer 40 has no removal area 11a, the tensile stress in the removal area 11a is relatively small. The test results of Examples 1 to 12 show that as the width of the removal area 11a gradually increases, although there is still only one tensile stress band in the removal area 11a, the tensile stress in the removal area 11a first gradually increases and then gradually decreases with the increase in width. This is because the tensile stress generated by the coating areas 12a on both sides of the removal area 11a is superimposed in the removal area 11a. The superposition effect first gradually increases and then gradually decreases with the increase in width of the removal area 11a. When the width of the removal area 11a is 5mm to 21mm, the superposition effect of the tensile stress generated by the two coating areas 12a on both sides in the removal area 11a is optimal, resulting in greater tensile stress, which can better reduce the impact resistance of the window glass 100 and reduce the HIC of the window glass 100. As can be seen from the test results of Examples 13 to 16, when the width of the film removal area 11a continues to increase, two tensile stress bands appear in the film removal area 11a. The tensile stress of the two tensile stress bands is relatively low, and the reduction in the impact resistance and HIC of the window glass 100 is relatively limited. However, the two tensile stress bands can increase the area of ​​the window glass 100 with tensile stress, thereby increasing the area and number of weak areas of the window glass 100, and can also reduce the impact resistance and HIC of the window glass 100 to a certain extent.

[0192] Example 17

[0193] The vehicle window glass 100 of this embodiment includes a first glass layer 10, a coating layer 40, an intermediate layer 20 and a second glass layer 30 stacked in sequence; the coating layer 40 includes a plurality of film removal areas 11a and a plurality of coating areas 12a, and the film removal areas 11a and the coating areas 12a are alternately arranged.

[0194] The thickness of the first glass layer 10 and the second glass layer 30 is 2.1 mm, and the intermediate layer 20 is a PVB layer with a thickness of 0.76 mm.

[0195] Along the arrangement direction of the film removal area 11a and the coating area 12a, the width of the film removal area 11a is 5mm; the width of the coating area 12a is 20mm.

[0196] The coating layer 40 includes an adhesion layer 43 (SiAlZrNx 17.6nm), a heat-reflective layer 44 (AZO 12.8nm + Ag 11nm + AZO 12.8nm), a barrier layer 46 (ZnSnOx 52.7nm), a heat-reflective layer 44 (AZO 12.8nm + Ag 13nm + AZO 12.8nm), a barrier layer 46 (ZnSnOx 54.2nm), a heat-reflective layer 44 (AZO 12.8nm + Ag 14nm + AZO 12.8nm), and an outermost dielectric layer 45 (ZnSnOx 14.8nm + SiAlZrNx 16.2nm) stacked sequentially. The adhesion layer 43 is disposed on the surface of the first glass layer 10 facing the intermediate layer 20.

[0197] Example 18

[0198] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 10 mm.

[0199] Example 19

[0200] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 15mm.

[0201] Example 20

[0202] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 20mm.

[0203] Example 21

[0204] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 25mm.

[0205] Example 22

[0206] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 30mm.

[0207] Example 23

[0208] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 35mm.

[0209] Example 24

[0210] The difference between this embodiment and embodiment 17 is that the width of the film removal area 11a in this embodiment is 40mm.

[0211] Comparative Example 2

[0212] The vehicle window glass 100 in each embodiment includes a first glass layer 10, an intermediate layer 20, a coating layer 40 and a second glass layer 30 stacked sequentially; the coating layer 40 covers the entire surface of the second glass layer 30 facing the intermediate layer 20;

[0213] The coating layer 40 in this comparative example is the same as the coating layer 40 in Example 17.

[0214] The stress values ​​of the stress bands in the decoction area 11a of the vehicle window glass 100 of each embodiment were tested according to GB / T 18144 "Glass Stress Test Method". Table 2 below shows the stress values ​​of the decoction area 11a of each embodiment.

[0215] Table 2 Performance parameters of the vehicle window glass 100 in each embodiment and comparative example

[0216]

[0217]

[0218] The test results of Comparative Example 2 show that there is no stress superposition in the coating layer 40, and the tensile stress in the film removal area 11a is relatively small. The test results of Examples 17 to 20 show that as the width of the film removal area 11a gradually increases, although there is still only one tensile stress band in the film removal area 11a, the tensile stress in the film removal area 11a first gradually increases and then gradually decreases with the increase in width. This is because the tensile stress generated by the coating areas 12a on both sides of the film removal area 11a is superimposed in the film removal area 11a. The superposition effect first gradually increases and then gradually decreases with the increase in width of the film removal area 11a. When the width of the film removal area 11a is 5mm to 20mm, the superposition effect of the tensile stress generated by the two coating areas 12a on both sides in the film removal area 11a is optimal, resulting in greater tensile stress, which can better reduce the impact resistance of the window glass 100 and reduce the HIC of the window glass 100. The test results from Examples 21 to 24 show that when the width of the decoction area 11a continues to increase, two tensile stress bands appear in the decoction area 11a. The tensile stress in both tensile stress bands is relatively low, and the reduction in impact resistance and HIC of the window glass 100 is limited. However, the two tensile stress bands can increase the area of ​​the window glass 100 with tensile stress, thereby increasing the area and number of weak areas in the window glass 100, and can also reduce the impact resistance and HIC of the window glass 100 to a certain extent.

[0219] Furthermore, compared to Examples 1 to 16, the silver layer in the coating layer 40 of Examples 17 to 24 is later and has a higher thermal reflectivity, which can reflect more heat and has a wider thermal efficiency. Therefore, the tensile stress values ​​generated in the coating area 12a and the removal area 11a will be higher.

[0220] Please see Figure 15 This application embodiment also provides a vehicle 200, which includes a body 210 and a window glass 100 as described in this application embodiment, wherein the window glass 100 is mounted on the body 210.

[0221] The vehicle 200 in this application embodiment can be, but is not limited to, a car, sedan, bus, truck, train, or other means of transportation.

[0222] For a detailed description of other aspects of the vehicle window glass 100, please refer to the description of the corresponding part of the above embodiment, which will not be repeated here.

[0223] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0224] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A type of vehicle window glass, characterized in that, The vehicle window glass includes a glass substrate, the glass substrate having multiple decoction areas and multiple coating areas, the coating areas being connected to the decoction areas, and the maximum tensile stress of the decoction areas being greater than the maximum tensile stress of the coating areas. The vehicle window glass also includes a coating layer, which is disposed on the surface of the glass substrate and covers the coating area along the thickness direction of the glass substrate.

2. The vehicle window glass according to claim 1, characterized in that, The glass substrate includes a first glass layer, an intermediate layer and a second glass layer stacked sequentially. The first glass layer includes a first surface and a second surface disposed opposite to each other. The second glass layer includes a third surface and a fourth surface disposed opposite to each other. The intermediate layer is located between the second surface and the third surface. The coating layer is disposed on the second surface and / or the third surface.

3. The vehicle window glass according to claim 1, characterized in that, The maximum tensile stress in the membrane removal zone ranges from 1 MPa to 20 MPa.

4. The vehicle window glass according to claim 1, characterized in that, The plurality of film removal zones are connected, the plurality of coating zones are spaced apart, and the film removal zones surround the outer periphery of each of the coating zones.

5. The vehicle window glass according to claim 4, characterized in that, Along the arrangement direction of the film removal area and the film coating area, the distance between two adjacent film coating layers on the surface of the glass substrate is set as w1, where 0mm < w1 < 25mm.

6. The vehicle window glass according to claim 5, characterized in that, Along the arrangement direction of the film removal area and the film coating area, the distance w1 between two adjacent film coating layers on the surface of the glass substrate is in the range of 10mm≤w1<25mm.

7. The vehicle window glass according to claim 4, characterized in that, Along the arrangement direction of the film removal area and the film coating area, the distance between the two furthest points of the pattern outline formed by the film coating layer on the surface of the glass substrate is set as w2, where 1mm≤w2≤30mm.

8. The vehicle window glass according to claim 1, characterized in that, The multiple coating areas are connected as one unit, and the multiple film removal areas are spaced apart, with the coating areas surrounding the outer periphery of each film removal area.

9. The vehicle window glass according to claim 8, characterized in that, Along the arrangement direction of the film removal area and the coating area, the width of the film removal area is set as w1, where 0mm < w1 < 25mm.

10. The vehicle window glass according to claim 9, characterized in that, Along the arrangement direction of the film removal area and the coating area, the width w1 of the film removal area is in the range of 10mm≤w1<25mm.

11. The vehicle window glass according to claim 5, 6, 9, or 10, characterized in that, The maximum tensile stress in the membrane removal zone ranges from 7 MPa to 20 MPa.

12. The vehicle window glass according to claim 1, characterized in that, The plurality of coating zones are separated and spaced apart, and the plurality of film removal zones are separated and spaced apart.

13. The vehicle window glass according to claim 1, characterized in that, The thickness h of the coating layer is in the range of 50nm≤h≤400nm.

14. The vehicle window glass according to claim 1, characterized in that, The HIC value of the vehicle window glass is less than or equal to 1000.

15. The vehicle window glass according to any one of claims 1-10 and 12-14, characterized in that, The vehicle window glass includes a transparent area and a shielding area, and the shielding area surrounds the outer periphery of the transparent area; The coating area and the film removal area are located in the transparent area and / or the shielding area.

16. The vehicle window glass according to claim 15, characterized in that, The visible light transmittance of the transparent area is greater than or equal to 70%, and the visible light transmittance of the shielded area is less than or equal to 5%.

17. The vehicle window glass according to claim 15, characterized in that, The vehicle window glass also includes a shielding layer, which is disposed on the surface of the glass substrate and covers the shielding area along the thickness direction of the glass substrate. The ultraviolet transmittance of the shielding layer is less than or equal to 0.05%.

18. The vehicle window glass according to claim 1, characterized in that, The glass substrate is processed by single-piece pressing, gravity pressing, or double-piece pressing.

19. The vehicle window glass according to claim 1, characterized in that, The coating layer can be a metal layer or a non-metal layer; The material used for the metal layer is selected from at least one of silver, copper, and indium tin oxide; The non-metallic layer is selected from at least one of silicon dioxide, titanium dioxide, zinc oxide, silicon nitride, titanium nitride, and magnesium fluoride.

20. A vehicle, characterized in that, The vehicles include: Body; and The vehicle window glass according to any one of claims 1-19, wherein the vehicle window glass is mounted on the vehicle body.

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