Window glass and vehicle

Abstract

The embodiment of the invention provides vehicle window glass and a vehicle, which can solve the problem of optical distortion when signal light is transmitted to sensing devices such as a camera and a radar through the vehicle window glass, and ensure that the signal transmission quality of the sensing devices such as the camera and the radar is good. The vehicle window glass comprises a glass substrate, a functional patch and a bonding layer, the functional patch is located on one side of the glass substrate in the thickness direction, the functional patch and the glass substrate are arranged in a spaced mode, and the bonding layer is connected between the glass substrate and the functional patch; the vehicle window glass is provided with a signal transmission area, and the projection of the functional patch covers the signal transmission area in the thickness direction of the glass substrate; wherein the functional patch comprises a patch layer and a functional layer, the patch layer is connected to the surface, away from the glass substrate, of the bonding layer and covers the surface, away from the glass substrate, of the bonding layer, the thickness h1 of the patch layer is smaller than or equal to the thickness h2 of the bonding layer, and the functional layer is connected to the surface, away from the bonding layer, of the patch layer and covers the surface, away from the bonding layer, of the patch layer.

Description

Technical Field

[0001] This application relates to the technical field of automobiles, and particularly to a window glass and a vehicle. Background Art

[0002] With the development of the automobile manufacturing industry, the intelligence level of automobiles is also constantly improving. In existing automobiles, camera and radar and other sensor components are usually arranged on the inner side of the window glass so that the automobile can realize functions such as assisted driving, face recognition, and surround view. However, there is an optical distortion problem when the signal light passes through the window glass and reaches the camera and radar and other sensor components, resulting in the abnormal use of the camera and radar and other sensor components and affecting the user experience. Summary of the Invention

[0003] Embodiments of this application provide a window glass and a vehicle, which can solve the optical distortion problem that occurs when the signal light passes through the window glass and reaches the camera and radar and other sensor components, ensure good signal transmission quality of the camera and radar and other sensor components, and thus help to improve the user experience.

[0004] In a first aspect, this application provides a window glass for use in a vehicle. The window glass includes a glass substrate, a functional patch, and an adhesive layer. The functional patch is located on one side of the glass substrate in the thickness direction and is spaced from the glass substrate. The adhesive layer is connected between the glass substrate and the functional patch;

[0005] The window glass has a signal transmission area, and in the thickness direction of the glass substrate, the projection of the functional patch covers the signal transmission area;

[0006] Wherein, the functional patch includes a patch layer and a functional layer. The patch layer is connected to the surface of the adhesive layer facing away from the glass substrate and covers the surface of the adhesive layer facing away from the glass substrate. The thickness h1 of the patch layer is less than or equal to the thickness h2 of the adhesive layer. The functional layer is connected to the surface of the patch layer facing away from the adhesive layer and covers the surface of the patch layer facing away from the adhesive layer.

[0007] Wherein, the ratio of the thickness h1 of the patch layer to the thickness h2 of the adhesive layer is 0.5 ≤ h1 / h2 ≤ 1.

[0008] Wherein, the thickness h1 of the patch layer is less than or equal to 700 μm.

[0009] Wherein, the thickness h2 of the adhesive layer is less than or equal to 900 μm.

[0010] Wherein, the window glass has a signal transmission area, and in the thickness direction of the glass substrate, the projection of the functional patch covers the signal transmission area.

[0011] Among them, the window glass further has a shielding area, and the shielding area is connected to the signal transmission area;

[0012] Along the thickness direction of the glass substrate, the shielding area partially overlaps with the functional patch.

[0013] Among them, the glass substrate further includes an outer glass plate, an inner glass plate and an intermediate layer. The outer glass plate and the inner glass plate are spaced apart and oppositely arranged, and the intermediate layer is located between the outer glass plate and the inner glass plate;

[0014] The outer glass plate has a first surface and a second surface arranged opposite to each other. The inner glass plate has a third surface and a fourth surface arranged opposite to each other. The second surface and the third surface are oppositely arranged, and the intermediate layer is located between the second surface and the third surface;

[0015] The adhesive layer is provided on the fourth surface of the inner glass plate.

[0016] Among them, the glass substrate further includes a shielding layer, and the shielding layer is located in the shielding area. The shielding layer is provided on the second surface of the outer glass plate and / or the fourth surface of the inner glass plate and / or the third surface of the outer glass plate.

[0017] Among them, the glass substrate further includes a heat insulation layer, and the heat insulation layer is provided on the second surface of the outer glass plate and / or the third surface of the inner glass plate, avoiding the signal transmission area.

[0018] Among them, the adhesive layer is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, ionic polymer and acrylic acid.

[0019] Among them, the adhesive layer is an OCA optical adhesive or an SCA optical adhesive.

[0020] Among them, the patch layer is a glass patch, or the patch layer is a plastic patch.

[0021] In a second aspect, the present application further provides a vehicle, including a vehicle body, a sensor and the window glass as described in any one of the above. The window glass and the sensor are both installed on the vehicle body. The sensor is located on the side of the window glass facing the vehicle body and is spaced apart and oppositely arranged from the functional patch.

[0022] Among them, the sensor is selected from at least one of lidar, infrared camera and visible light camera.

[0023] In the provided window glass of the present application, by reasonably adjusting the thickness of the patch layer and the thickness of the adhesive layer in the functional patch, and making the thickness of the patch layer less than or equal to the thickness of the adhesive layer, the maximum optical distortion value in the area corresponding to the functional patch in the window glass can be significantly reduced, thereby effectively improving the optical distortion phenomenon of the window glass, avoiding distortion of the signal light after passing through the window glass, ensuring high accuracy of the signal light received by the vehicle sensor, thus contributing to ensuring good signal transmission quality of the vehicle sensor, and further being beneficial to enhancing the user experience. Description of the Drawings

[0024] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments of the present application will be described below.

[0025] Figure 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0026] Figure 2 is Figure 1 a partial structural schematic diagram of the vehicle shown after being cut along A-A;

[0027] Figure 3 is Figure 2 a schematic cross-sectional structure diagram of the window glass shown.

[0028] The names corresponding to the reference numerals in the drawings are as follows:

[0029] Vehicle 100, vehicle body 120, window glass 110, sensor 130, signal receiving surface 130a, transmission area 110a, shielding area 110b, glass substrate 10, functional patch 20, adhesive layer 30, outer glass plate 11, inner glass plate 12, intermediate layer 13, shielding layer 14, heat insulation layer 15, first surface 111, second surface 112, third surface 121, fourth surface 122, patch layer 21, functional layer 22. Detailed Embodiments

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of a vehicle 100 provided by an embodiment of the present application, Figure 2 is Figure 1 a partial structural schematic diagram of the vehicle 100 shown after being cut along A-A. Among them, "being cut along A-A" means being cut along the plane where the A-A line is located.

[0032] The vehicle 100 provided by the embodiments of the present application may be, but is not limited to, a sedan, a truck, a pickup truck, a commercial vehicle, a bus, or an off-road vehicle, and the present application does not impose any restrictions thereon. In this embodiment, the vehicle 100 may include a window glass 110, a vehicle body 120, and a sensor 130. The window glass 110 and the sensor 130 are both mounted on the vehicle body 120. Among them, the window glass 110 may provide a signal transmission area for the sensor 130 to observe the external environment of the vehicle or collect external environment data. The window glass 110 may be used as the front windshield, rear windshield, or side window glass of the vehicle 100. Hereinafter, the window glass 110 being the windshield of the vehicle 100 will be taken as an example for description.

[0033] In this embodiment, the sensor 130 is located on the side of the window glass 110 facing the vehicle body 120, and is spaced apart from and oppositely arranged with the window glass 110. Among them, the sensor 130 has a signal receiving surface 130a. The signal receiving surface 130a is arranged facing the window glass 110.

[0034] It can be understood that the signal light rays emitted by the sensor 130 can pass through the window glass 110 to collect the surrounding environment information of the vehicle 100. Part of the signal light rays reflected by the objects in the surrounding environment can pass through the window glass 110 again and be received by the sensor 130, or the sensor 130 receives the signal light rays passing through the window glass 110 emitted or reflected by the objects in the surrounding environment, so that the sensor 130 can sense the surrounding environment information of the vehicle 100, enabling the vehicle 100 to realize the recognition, judgment, and display of the surrounding environment information, and further enabling the vehicle 100 to realize functions such as assisted driving, face recognition, and panoramic view.

[0035] In this embodiment, the number of the sensors 130 may be one or multiple, and the embodiments of the present application do not impose strict restrictions thereon. Among them, the sensor 130 may be an infrared camera, a visible light camera, a lidar (LiDAR), or an electronic toll collection system (ETC), etc., and the embodiments of the present application do not impose strict restrictions thereon.

[0036] Please refer to Figure 3 , Figure 3 which is Figure 2 a schematic cross-sectional structure diagram of the window glass 110 shown.

[0037] In this embodiment, the window glass 110 has a signal transmission area 110a and an occlusion area 110b connected to the signal transmission area 110a. Among them, the signal transmission area 110a is used for optical signal transmission so that the sensor 130 can achieve signal transmission. It should be noted that the shape and size of the signal transmission area 110a can be adjusted according to actual needs as long as the signal light of the sensor 130 can pass through. In addition, the maximum optical distortion value of the signal transmission area 110a of the window glass 110 is less than 150 mdpt, and can be optionally less than 120 mdpt, less than 100 mdpt, less than 80 mdpt, less than 60 mdpt, less than 40 mdpt, etc.

[0038] The window glass 110 includes a glass substrate 10, a functional patch 20, and an adhesive layer 30. The functional patch 20 is located on one side in the thickness direction of the glass substrate 10 and is spaced from the glass substrate 10. The adhesive layer 30 is connected between the glass substrate 10 and the functional patch 20 to fixedly connect the functional patch 20 and the glass substrate 10.

[0039] In this embodiment, the glass substrate 10 can be laminated glass or single-pane glass. Exemplarily, the glass substrate 10 is laminated glass. The glass substrate 10 includes an outer glass plate 11, an inner glass plate 12, an intermediate layer 13, a shielding layer 14, and a heat insulation layer 15. Among them, the outer glass plate 11 and the inner glass plate 12 are spaced and oppositely arranged. The intermediate layer 13, the shielding layer 14, and the heat insulation layer 15 are all located between the outer glass plate 11 and the inner glass plate 12.

[0040] Specifically, the outer glass plate 11 includes a first surface 111 and a second surface 112. Along the thickness direction of the outer glass plate 11, the first surface 111 and the second surface 112 are arranged in opposite directions. Among them, the first surface 111 is the surface of the outer glass plate 11 facing the outside of the vehicle 100. The inner glass plate 12 includes a third surface 121 and a fourth surface 122. Along the thickness direction of the inner glass plate 12, the third surface 121 and the fourth surface 122 are arranged in opposite directions. Among them, the third surface 121 faces the second surface 112.

[0041] The intermediate layer 13 is located between the second surface 112 and the third surface 121 and is used to bond the outer glass plate 11 and the inner glass plate 12. Among them, the intermediate layer 13 can be a transparent thermoplastic polymer film with a visible light transmittance greater than or equal to 70% to ensure that the signal light of the sensor 130 can normally pass through the glass substrate 10 and avoid interference of the intermediate layer 13 with the signal light.

[0042] In this embodiment, the intermediate layer 13 can be a single thermoplastic polymer film or composed of two or more thermoplastic polymer films laminated together. The material of the thermoplastic polymer film is selected from at least one of Polyvinyl Butyral (PVB), Polyurethane (PU), Ethylene-vinyl Acetate Copolymer (EVA), and Ionic Polymer (Sentry Glas Plus, SGP). It should be noted that when the intermediate layer 13 includes two or more thermoplastic polymer films, the two or more thermoplastic polymer films can be of the same or different materials to meet the requirements of different scenarios.

[0043] In this embodiment, the shielding layer 14 is located in the shielding area 110b, and the shielding layer 14 is provided on the surface of the outer glass plate 11 facing the inner glass plate 12. That is, the shielding layer 14 is provided on the second surface 112 of the outer glass plate 11. With this setting, the signal light emitted by the sensor 130 can be avoided, so as to prevent the shielding layer 14 from affecting the signal transmission of the sensor 130. At the same time, the shielding area 110b of the window glass 110 is formed by the shielding layer 14. The shielding layer 14 reduces the visible light transmittance of the shielding area 110b to less than 10%, and further can be reduced to less than 5% or less than 1%. In this way, the shielding layer 14 can play a role in shielding light. That is to say, the shielding layer 14 can be used to shield and protect the parts inside the vehicle 100. With this setting, on the one hand, the shielding layer 14 can block the parts inside the vehicle 100 to ensure the overall beauty of the external view. On the other hand, the shielding layer 14 can also play a role in preventing ultraviolet rays, preventing the parts inside the vehicle 100 from being directly irradiated by sunlight and causing aging and damage, so as to improve the service life of the parts inside the vehicle 100.

[0044] In some other embodiments, the shielding layer 14 can also be provided on the surface of the inner glass plate 12 facing away from the outer glass plate 11. That is, the shielding layer 14 can also be provided on the fourth surface 122 of the inner glass plate 12.

[0045] In some other embodiments, the shielding layer 14 can also be provided on the surface of the inner glass plate 12 facing the outer glass plate 11. That is, the shielding layer 14 can also be provided on the third surface 121 of the inner glass plate 12.

[0046] In this embodiment, the shielding layer 14 is usually formed by ceramic ink or ultraviolet ink by means of screen printing, inkjet printing, etc. around the second surface 112, and is formed into the shielding layer 14 after high-temperature sintering or UV curing. The shielding layer 14 is arranged around the four peripheral edge areas of the second surface 112. The color of the shielding layer 14 is usually a dark color, including but not limited to black, brown, etc., to achieve the shielding effect.

[0047] In some other embodiments, the shielding layer 14 may also be a dark polymer film or a light-adjusting element. The dark polymer film may be a polymer film with body coloring, and the material of the polymer film is a thermoplastic resin, such as polyvinyl butyral, polyethylene glycol terephthalate (PET), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer, thermoplastic polyurethane elastomer (TPU), polyolefin elastomer (POE), polyurethane (PU), or an ionomer film, etc. Preferably, it is PET or PVB. For example, coloring components are added during the manufacture of the polymer film to achieve body coloring, resulting in black or brown polymer films, etc. The dark polymer film may also be a polymer film with surface-printed pigments, such as printing black or brown pigments or paints on the surface of the polymer film, etc. The light-adjusting element may be a polymer dispersed liquid crystal film (PDLC), a suspended particle device (SPD), an electrochromic film (EC), or a dye liquid crystal film (LC), etc. The minimum visible light transmittance of the light-adjusting element is less than or equal to 5%, such as 3%, 2%, 1%, 0.5%, 0%. The maximum visible light transmittance of the light-adjusting element is set as needed, such as 10%, 20%, 30%, 50%, 70%, 80%, etc. Specifically, for example, the visible light transmittance of the light-adjusting element can be adjusted between 0% and 20%, or between 0.5% and 50%, or between 0% and 70%, etc., so as to meet the requirements of visible light transmittance in multiple scenarios.

[0048] In this embodiment, the heat insulation layer 15 is located in the visible area of the window glass 110, and the heat insulation layer 15 is disposed on the surface of the inner glass plate 12 facing the outer glass plate 11 while avoiding the signal transmission area 110a. That is to say, the heat insulation layer 15 is disposed on the third surface 121 of the inner glass plate 12 while avoiding the signal transmission area 110a. With this arrangement, the heat insulation layer 15 can avoid the signal light rays emitted by the sensor 130, thereby preventing the heat insulation layer 15 from affecting the signal transmission of the sensor 130. The heat insulation layer 15 can be formed on the third surface 121 by Physical Vapor Deposition (PVD) process, Chemical Vapor Deposition (CVD) process, magnetron sputtering process or the like. In this embodiment, the heat insulation layer 15 can be used to reflect heat rays, reduce heat radiation such as infrared rays entering the interior of the vehicle 100, and enable the window glass 110 to achieve a heat insulation effect, thereby contributing to improving the thermal comfort and brightness comfort inside the vehicle.

[0049] In some other embodiments, the heat insulation layer 15 can also be disposed on the surface of the outer glass plate 11 facing the inner glass plate 12. That is to say, the heat insulation layer 15 can also be disposed on the second surface 112 of the outer glass plate 11. At this time, the shielding layer 14 can be disposed on the surface of the inner glass plate 12 facing away from the outer glass plate 11. That is to say, the shielding layer 14 can also be disposed on the fourth surface 122 of the inner glass plate 12.

[0050] Please continue to refer to Figure 3 . Along the thickness direction of the glass substrate 10, the projection of the bonding layer 30 covers the signal transmission area 110a of the window glass 110 and is connected to the fourth surface 122 of the inner glass plate 12. In this embodiment, the thickness h2 of the bonding layer 30 ≤ 900 μm. Preferably, the thickness h2 of the bonding layer 30 ≤ 700 μm. More preferably, the thickness h2 of the bonding layer 30 ≤ 500 μm. With this arrangement, the thickness of the bonding layer 30 can be made thinner, reducing the optical distortion effect caused by the bonding layer 30, preventing the signal light rays of the sensor 130 from being distorted after passing through the window glass 110, and ensuring better signal transmission quality of the sensor 130.

[0051] In this embodiment, the preparation material of the bonding layer 30 is selected from at least one of organic substances such as polyvinyl butyral, ethylene-vinyl acetate copolymer (EVA), ionic polymer, and acrylic acid. Exemplarily, the bonding layer 30 can be an OCA (Optical Clear Adhesive) optical glue layer or an SCA (Supplemental Coolant Additive) optical glue layer, and the embodiments of the present application do not impose any restrictions on this.

[0052] In the thickness direction of the glass substrate 10, the projection of the functional patch 20 covers the signal transmission area 110a, is connected to the surface of the adhesive layer 30 facing away from the glass substrate 10, and covers the surface of the adhesive layer 30 facing away from the glass substrate 10. Specifically, the functional patch 20 is connected to the surface of the adhesive layer 30 facing away from the inner glass plate 12 and covers the surface of the adhesive layer 30 facing away from the inner glass plate 12. The functional patch 20 can enable the vehicle window glass 110 to achieve functions such as visible light cut-off, enhanced light transmission and coloring effects for specific wavelength bands or wave points.

[0053] In this embodiment, in the thickness direction of the glass substrate 10, the projection of the functional patch 20 partially overlaps with the shielding area 110b. That is, in the thickness direction of the glass substrate 10, the projection of the functional patch 20 partially overlaps with the projection of the shielding layer 14. This is because optical distortion is likely to occur when light passes through the edge of the functional patch 20, and the shielding layer 14 is required to shield the optical distortion at the edge of the functional patch 20 to prevent it from affecting the signal transmission of the sensor 130.

[0054] In this embodiment, the functional patch 20 includes a patch layer 21 and a functional layer 22 which are stacked. Among them, the patch layer 21 is connected to the surface of the adhesive layer 30 facing away from the glass substrate 10 and covers the surface of the adhesive layer 30 facing away from the glass substrate 10. Specifically, the patch layer 21 is connected to the surface of the adhesive layer 30 facing away from the inner glass plate 12. Exemplarily, the patch layer 21 is a glass patch. In some other embodiments, the patch layer 21 can also be a plastic patch, and the embodiments of the present application do not limit this.

[0055] In this embodiment, the thickness h1 of the patch layer 21 is less than or equal to the thickness h2 of the adhesive layer 30. Among them, the thickness h1 of the patch layer 21 ≤ 0.7 mm. Preferably, the thickness h1 of the patch layer 21 ≤ 0.5 mm. More preferably, the thickness h1 of the patch layer 21 ≤ 0.3 mm. Under this setting, it can not only ensure good structural strength of the patch layer 21, but also avoid affecting the signal transmission of the sensor 130 due to the excessive thickness of the patch layer 21, and ensure better signal transmission quality of the sensor 130.

[0056] It should be understood that when the functional patch 20 is attached to the glass substrate 10 through the adhesive layer 30, optical distortion is likely to occur in the signal transmission area 110a of the vehicle window glass 110. In this embodiment, by making the thickness h1 of the patch layer 21 less than or equal to the thickness h2 of the adhesive layer 30, the maximum optical distortion value of the signal transmission area 110a can be significantly reduced, the optical distortion phenomenon in the signal transmission area 110a of the vehicle window glass 110 can be effectively improved, the distortion of the optical signal light passing through the signal transmission area 110a of the vehicle window glass 110 can be avoided, the accuracy of the optical signal light received by the sensor 130 of the vehicle 100 can be ensured to be high, which helps to ensure good signal transmission quality of the sensor 130 of the vehicle 100, and further helps to improve the user experience.

[0057] The functional layer 22 is disposed on the surface of the patch layer 21 facing away from the adhesive layer 30 and covers the surface of the patch layer 21 facing away from the adhesive layer 30. Exemplarily, the functional layer 22 is at least one of an antireflection film, a visible light cutoff and infrared transmission film, and a coloring film. For example, the antireflection film can reduce the reflection of the signal light of the sensor 130 by the glass substrate 10 and improve the transmittance of the signal light of the sensor 130 by the glass substrate 10. For example, the optical transmittance of the glass substrate 10 coated with the antireflection film in the wavelength range of 920 nm - 980 nm is increased by at least 3% relative to the glass substrate 10 without the antireflection film, and preferably, it is increased by 3% - 9%. The visible light cutoff and infrared transmission film is an optical film that can completely block the signal transmission region 110a and does not attenuate the infrared signal transmittance. For example, the optical transmittance of the visible light cutoff and infrared transmission film in the wavelength range of 380 nm - 780 nm is less than 1%, and the optical transmittance in the wavelength range of 920 nm - 980 nm is greater than 90%. Among them, the visible light cutoff and infrared transmission film can have the same color as the shielding layer 14, which is beneficial to improving the appearance beauty of the window glass 110. In addition, a colored coloring film can also be designed according to the requirements of the optical signal transmittance of the sensor 130, so as to meet the aesthetic requirements of the window glass 110 and the signal transmission performance requirements of the sensor 130 for the window glass 110.

[0058] In this embodiment, the number of the functional patches 20 is at least one. That is to say, the number of the functional patches 20 can be one or multiple. Specifically, when the number of the functional patches 20 is one, the number of the sensors 130 can be one. At this time, the functional patch 20 provides a signal transmission window for one sensor 130. In some other embodiments, when the number of the functional patches 20 is one, the number of the sensors 130 can also be multiple. At this time, the functional patch 20 provides signal transmission windows for multiple sensors 130.

[0059] When the number of the functional patches 20 is multiple, the number of the sensors 130 is multiple. At this time, the multiple functional patches 20 are arranged in one-to-one correspondence with the multiple sensors 130. Each functional patch 20 is spaced apart from and opposite to one sensor 130 and provides a signal transmission window for one sensor 130. Hereinafter, one functional patch 20 and one sensor 130 will be taken as an example for description.

[0060] In this embodiment, the material of the adhesive layer 30 and the thickness h2 of the patch layer 21 of the functional patch 20 are important factors affecting the optical performance of the signal transmission region 110a of the window glass 110. Hereinafter, the material of the adhesive layer 30 and the thickness h2 of the patch layer 21 will be changed, and the optical performance of the signal transmission region 110a of the corresponding window glass 110 will be tested. The specific description is as follows:

[0061] The comparative example provided in this application is a glass substrate 10 without a bonding layer 30 and a functional patch 20. Prepare the glass substrate 10, the bonding layer 30, and the functional patch 20 in Examples 1-8. Connect the functional patch 20 and the glass substrate 10 together through the bonding layer 30 to obtain Examples 1-8. Among them, the structures and materials of the glass substrates 10 selected in Examples 1-8 are the same as those of the glass substrate 10 selected in the comparative example. The structures and materials of the functional layers 22 of the functional patches 20 selected in Examples 1-8 are the same. The differences in the window glasses 110 selected in Examples 1-8 lie in the thickness of the patch layer 21 of the functional patch 20 and the material of the bonding layer 30, which are specifically described as follows.

[0062] Examples 1-4

[0063] In Examples 1-4, the material of the bonding layer 30 selected is an SCA optical glue layer, and the thickness h2 of the bonding layer 30 is 350 μm. The differences in Examples 1-4 lie in the thickness h1 of the patch layer 21 in the functional patch 20. Among them, the thickness h1 of the patch layer 21 selected in Example 1 is 700 μm, the thickness h1 of the patch layer 21 selected in Example 2 is 400 μm, the thickness h1 of the patch layer 21 selected in Example 3 is 350 μm, and the thickness h1 of the patch layer 21 selected in Example 4 is 300 μm.

[0064] Examples 5-8

[0065] In Examples 5-8, the material of the bonding layer 30 selected is an OCA optical glue layer, and the thickness h2 of the bonding layer 30 is 350 μm. The differences in Examples 5-8 lie in the thickness h1 of the patch layer 21 in the functional patch 20. Among them, the thickness h1 of the patch layer 21 selected in Example 5 is 700 μm, the thickness h1 of the patch layer 21 selected in Example 6 is 400 μm, the thickness h1 of the patch layer 21 selected in Example 7 is 350 μm, and the thickness h1 of the patch layer 21 selected in Example 8 is 300 μm.

[0066] Measure the maximum light distortion value of the signal transmission area 110a of the window glasses 110 in the above Examples 1-8 and the comparative example, and record the measurement results in Table 1.

[0067] Table 1 Measurement results of the window glasses 110 in the comparative example and Examples 1-8

[0068]

[0069]

[0070] According to the above experimental results, when the bonding layer 30 and the functional patch 20 are not provided on the surface of the glass substrate 10, the maximum optical distortion value of the signal transmission area 110a of the window glass 110 is less than 150 mdpt. When the functional patch 20 is connected to the glass substrate 10 through the bonding layer 30, and the thickness h2 of the patch layer 21 in the functional patch 20 is greater than the thickness h1 of the bonding layer 30, the maximum optical distortion value of the signal transmission area 110a of the window glass 110 is greater than 150 mdpt. This indicates that the functional patch 20 will cause optical distortion in the signal transmission area 110a of the window glass 110, resulting in the maximum optical distortion value of the signal transmission area 110a of the window glass 110 exceeding the standard range. At this time, the window glass 110 will have optical distortion, which will reduce the signal transmission quality of the sensor 130 and does not meet the usage standards of the product.

[0071] When the functional patch 20 is connected to the glass substrate 10 through the bonding layer 30, and the thickness h2 of the patch layer 21 in the functional patch 20 is less than or equal to the thickness h1 of the bonding layer 30, the maximum optical distortion value of the signal transmission area 110a of the window glass 110 is less than 150 mdpt. At this time, the degree of optical distortion of the signal transmission area 110a of the window glass 110 is significantly reduced, so that it is possible to avoid the distortion of the signal light of the sensor 130 passing through the window glass 110, and it can ensure that the transmission quality of the sensor 130 is better and meets the usage standards of the product.

[0072] In the window glass 110 provided by the embodiment of the present application, by reasonably adjusting the thickness h2 of the patch layer 21 and the thickness h1 of the bonding layer 30 in the functional patch 20, and making the thickness h1 of the patch layer 1 less than or equal to the thickness h2 of the bonding layer 30, the maximum optical distortion value of the signal transmission area 110a of the window glass 110 can be reduced, so as to effectively improve the optical distortion phenomenon of the signal transmission area 110a of the window glass 110, avoid the distortion of the optical signal light passing through the signal transmission area 110a of the window glass 110, ensure the high accuracy of the optical signal light received by the sensor 130 of the vehicle 100, thereby helping to ensure the good signal transmission quality of the sensor 130 of the vehicle 100, and further helping to improve the user experience.

[0073] The above has introduced the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A vehicle window glass, used in a vehicle, characterized in that: The vehicle window glass comprises a glass substrate, a functional patch and an adhesive layer, wherein the functional patch is located on one side of the glass substrate in a thickness direction and is spaced apart from the glass substrate, and the adhesive layer is connected between the glass substrate and the functional patch; The vehicle window glass has a signal transmission area, and along the thickness direction of the glass substrate, the projection of the functional patch covers the signal transmission area; Among them, the functional patch includes a patch layer and a functional layer, the patch layer is connected to the surface of the adhesive layer away from the glass substrate, and covers the surface of the adhesive layer away from the glass substrate, the thickness h1 of the patch layer is less than or equal to the thickness h2 of the adhesive layer, and the functional layer is connected to the surface of the patch layer away from the adhesive layer, and covers the surface of the patch layer away from the adhesive layer.

2. The vehicle window glass according to claim 1, characterized in that: The ratio of the thickness h1 of the patch layer to the thickness h2 of the adhesive layer is 0.5≤h1 / h2≤1.

3. The vehicle window glass according to claim 1 or 2, characterized in that: The thickness h1 of the patch layer is less than or equal to 700 μm.

4. The vehicle window glass according to claim 1 or 2, characterized in that: The thickness h2 of the bonding layer is less than or equal to 900 μm.

5. The vehicle window glass according to claim 1 or 2, characterized in that: The maximum optical distortion value of the signal transmission area is less than 150mdpt.

6. The vehicle window glass according to claim 1 or 2, characterized in that: The vehicle window glass also has a shielding area, and the shielding area is connected to the signal transmission area; Along the thickness direction of the glass substrate, the shielding area partially overlaps with the functional patch.

7. The vehicle window glass according to claim 6, characterized in that: The glass substrate further comprises an outer glass plate, an inner glass plate and an intermediate layer, wherein the outer glass plate and the inner glass plate are spaced apart and arranged opposite to each other, and the intermediate layer is located between the outer glass plate and the inner glass plate; The outer glass plate has a first surface and a second surface disposed opposite to each other, the inner glass plate has a third surface and a fourth surface disposed opposite to each other, the second surface and the third surface are disposed opposite to each other, and the intermediate layer is located between the second surface and the third surface; The adhesive layer is disposed on the fourth surface of the inner glass plate.

8. The vehicle window glass according to claim 7, characterized in that: The glass substrate further includes a shielding layer, which is located in the shielding area and is arranged on the second surface of the outer glass plate and / or the fourth surface of the inner glass plate and / or the third surface of the outer glass plate.

9. The vehicle window glass according to claim 7, characterized in that: The glass substrate further includes a heat insulation layer, and the heat insulation layer is arranged on the second surface of the outer glass plate and / or the third surface of the inner glass plate to avoid the signal transmission area.

10. The vehicle window glass according to claim 1, characterized in that: The adhesive layer is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, ionomer and acrylic acid.

11. The vehicle window glass according to claim 1, characterized in that: The bonding layer is OCA optical glue or SCA optical glue.

12. The vehicle window glass according to claim 1, characterized in that: The patch layer is a glass patch, or the patch layer is a plastic patch.

13. A vehicle, characterized in that: It comprises a vehicle body, a sensor and a vehicle window glass as described in any one of claims 1 to 12, wherein the vehicle window glass and the sensor are both installed on the vehicle body, and the sensor is located on the side of the vehicle window glass facing the vehicle body and is spaced apart from and arranged opposite to the functional patch.

14. The vehicle according to claim 13, characterized in that The sensor is selected from at least one of a laser radar, an infrared camera, and a visible light camera.

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