Window glass and vehicle

Abstract

According to the vehicle window glass and the vehicle provided by the embodiment of the invention, the optical distortion increment of signal light transmitted to a radar and other sensing devices through the vehicle window glass can be reduced, the optical distortion stability of the vehicle window glass is improved, and the good signal transmission quality of the radar and other sensing devices is ensured, so that the use experience of a user is improved. The vehicle window glass comprises a glass substrate and a functional patch, and the functional patch is located on the side, facing the interior of a vehicle, of the glass substrate. The glass substrate is provided with a signal transmission area, and the projection of the functional patch covers the signal transmission area along the thickness direction of the glass substrate; the functional patch comprises a glass sheet, the included angle between the shower direction of the glass sheet and the shower direction of the glass substrate is X, and X is larger than or equal to 0 degree and smaller than or equal to 15 degrees.

Description

Technical Field

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

[0002] In existing automobiles, sensor components such as radars are usually arranged on the inner side of the window glass so that the automobile can implement functions such as assisted driving, face recognition, and surround view. The sensor components such as radars usually transmit signals through the signal transmission area of the window glass. To improve the signal transmission quality of the sensor components such as radars, a functional patch is usually arranged in the signal transmission area. However, the functional patch makes the increment of optical distortion of the signal light transmitted to the sensor components such as radars unstable, reduces the optical distortion stability of the window glass, causes the sensor components such as radars to be unable to be used normally, and affects the user experience. Summary of the Invention

[0003] Embodiments of the present application provide a window glass and a vehicle, which can reduce the increment of optical distortion of the signal light transmitted through the window glass to the sensor components such as radars, improve the optical distortion stability of the window glass, ensure good signal transmission quality of the sensor components such as radars, and thus help to improve the user experience.

[0004] In a first aspect, the present application provides a window glass installed on a vehicle. The window glass includes a glass substrate and a functional patch, and the functional patch is located on a side of the glass substrate facing the interior of the vehicle;

[0005] The glass substrate 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] The functional patch includes a glass sheet, and the included angle X between the pouring direction of the glass sheet and the pouring direction of the glass substrate is 0°≤X≤15°.

[0007] Wherein, the included angle X between the pouring direction of the glass sheet and the pouring direction of the glass substrate is 0°≤X≤10°.

[0008] Wherein, the included angle between the pouring direction of the glass substrate and the vertical direction of the glass substrate is less than or equal to 20°, and the included angle between the pouring direction of the glass sheet and the vertical direction of the glass sheet is less than or equal to 20°.

[0009] Wherein, the glass sheet includes a first side, a second side, and a chamfered side. The first side and the second side are arranged adjacent to each other with a space therebetween. The length of the first side is greater than or equal to the length of the second side. The chamfered side is connected between the first side and the second side, and the ratio of the radius of the chamfered side to the length of the first side is Y 1 , Y1 ≥0.02.

[0010] Wherein, the ratio between the radius of the chamfered edge and the length of the second side is Y 2 , 0 < Y 2 ≤0.5.

[0011] Wherein, the optical distortion value of the signal transmission area is less than 150 mdpt.

[0012] Wherein, the shape of the glass sheet is polygonal, circular or oval.

[0013] Wherein, the functional patch further includes an adhesive layer and a functional layer. The adhesive layer is connected between the glass substrate and the glass sheet. Wherein, the glass sheet covers the surface of the adhesive layer facing away from the glass substrate. The functional layer is connected to the surface of the glass sheet facing away from the adhesive layer and covers the surface of the glass sheet facing away from the adhesive layer.

[0014] Wherein, the material of the adhesive layer is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, ionic polymer and acrylic acid.

[0015] Wherein, the material of the adhesive layer is OCA optical adhesive or SCA optical adhesive.

[0016] Wherein, the functional layer is selected from at least one of an infrared antireflection film layer, a transparent conductive thin film, a hydrophobic film, an anti-fingerprint film, a color film and an anti-fog layer.

[0017] Wherein, the glass substrate is a single-piece glass; or, the glass substrate is laminated glass, and the laminated glass 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. The intermediate layer is located between the outer glass plate and the inner glass plate; the functional patch is located on the side of the inner glass plate facing away from the outer glass plate.

[0018] Wherein, the thickness of the glass sheet is less than or equal to 0.5 mm.

[0019] Wherein, the visible light transmittance of the glass sheet is greater than or equal to 90%.

[0020] 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.

[0021] Wherein, the sensor is selected from at least one of a lidar, an infrared camera and a visible light camera.

[0022] In the provided window glass of the present application, by making the angle X between the shower direction of the glass sheet and the shower direction of the glass substrate satisfy 0° ≤ X ≤ 15°, the incremental optical distortion of the signal light transmitted through the signal transmission area to the vehicle's sensor can be significantly reduced, the optical distortion stability of the window glass can be improved, the optical distortion phenomenon of the window glass can be effectively improved, so as to avoid the distortion of the optical signal light after passing through the window glass, ensure the high accuracy of the optical signal light received by the vehicle's sensor, and further ensure good signal transmission quality of the vehicle's sensor, thus enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To 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.

[0024] Figure 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0025] Figure 2 is Figure 1 a partial structural schematic diagram of the vehicle shown after being cut along A-A;

[0026] Figure 3 is Figure 1 a schematic structural diagram of the window glass in the vehicle shown;

[0027] Figure 4 is Figure 3 a partial structural schematic diagram of the window glass shown after being cut along B-B.

[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, glass substrate 10, signal transmission area 10a, shielding area 10b, functional patch 20, outer glass plate 11, inner glass plate 12, intermediate layer 13, first surface 111, second surface 112, third surface 121, fourth surface 122, glass sheet 21, functional layer 22, bonding layer 23, first side 211, second side 212, chamfered edge 213. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 1Partial 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, and similar descriptions hereinafter can be understood in the same way.

[0032] The vehicle 100 provided by the embodiment of the present application can be, but is not limited to, a sedan, a truck, a pickup truck, a commercial vehicle, a bus, or a sports utility vehicle, and the present application does not make any restrictions in this regard. In this embodiment, the vehicle 100 may include a window glass 110, a vehicle body 120, and a sensor 130. Both the window glass 110 and the sensor 130 are installed on the vehicle body 120. Among them, the window glass 110 can 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 can be used as the front windshield, rear windshield, or side window glass of the vehicle 100. Hereinafter, the window glass 110 being the front windshield of the vehicle 100 will be taken as an example for illustration.

[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 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 can be one or multiple, and the embodiments of the present application do not make strict restrictions in this regard. Among them, the sensor 130 can 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 make strict restrictions in this regard.

[0036] Please refer to Figure 3 and Figure 4 , Figure 3 is Figure 1 the structural schematic diagram of the window glass 110 in the vehicle 100 shown, Figure 4 is Figure 3 the partial structural schematic diagram of the window glass 110 shown after being cut along B-B.

[0037] The window glass 110 includes a glass substrate 10 and a functional patch 20, and the functional patch 20 is located on the side of the glass substrate 10 facing the vehicle 100. Among them, the glass substrate 10 has a signal transmission area 10a and an occlusion area 10b connected to the signal transmission area 10a. In this embodiment, the signal transmission area 10a 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 10a can be adjusted according to actual needs as long as the signal light of the sensor 130 can pass through. In addition, the optical distortion value of the signal transmission area 10a 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. Under this setting, optical distortion of the window glass 110 can be prevented, and the signal light of the sensor 130 can be prevented from being distorted after passing through the window glass 110, ensuring good signal transmission quality of the sensor 130.

[0038] In this embodiment, the glass substrate 10 can be prepared by the float process. Exemplarily, the glass substrate 10 is generally trapezoidal. Among them, the angle between the pouring direction of the glass substrate 10 and the vertical direction of the glass substrate 10 is less than or equal to 20°. That is, the pouring direction of the glass substrate 10 is the vertical pouring direction of the glass substrate 10. Among them, the vertical direction of the glass substrate 10 refers to the height direction of the glass substrate 10.

[0039] In this embodiment, the glass substrate 10 can be laminated glass or single-pane glass, and the embodiments of the present application do not strictly limit this. The following will describe the case where the glass substrate 10 is laminated glass.

[0040] Specifically, the glass substrate 10 includes an outer glass plate 11, an inner glass plate 12, and an intermediate layer 13. Among them, the outer glass plate 11 and the inner glass plate 12 are spaced apart and arranged opposite to each other. Exemplarily, both the outer glass plate 11 and the inner glass plate 12 are ultra-clear glass. The intermediate layer 13 is located between the outer glass plate 11 and the inner glass plate 12. 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 opposite to each other. 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 opposite to each other. 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. Exemplarily, the thickness of the intermediate layer 13 is 0.76 mm.

[0042] In this embodiment, the intermediate layer 13 can be a single thermoplastic polymer film or can be formed by laminating two or more thermoplastic polymer films. 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 ionomer (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 needs of different scenarios.

[0043] In a possible implementation manner, the glass substrate 10 may further include a shielding layer (not shown in the figure). For example, the shielding layer is located in the shielding area 10b, and the shielding layer is provided on the surface of the outer glass plate 11 facing the inner glass plate 12. That is, the shielding layer 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 from affecting the signal transmission of the sensor 130. At the same time, the shielding area 10b of the window glass 110 is formed by the shielding layer. The shielding layer reduces the visible light transmittance of the shielding area 10b to less than 10%, and further can be reduced to less than 5% or less than 1%. In this way, the shielding layer can play a role in shielding light. That is to say, the shielding layer can be used to shield and protect the parts inside the vehicle 100. With this setting, on the one hand, the shielding layer can shield the parts inside the vehicle 100 to ensure the overall beauty of the external view, and on the other hand, the shielding layer can also play a role in blocking ultraviolet rays to prevent the parts inside the vehicle 100 from being directly irradiated by sunlight and aging and being damaged, so as to improve the service life of the parts inside the vehicle 100.

[0044] In some other embodiments, the shielding layer 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 can also be provided on the fourth surface 122 of the inner glass plate 12.

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

[0046] In this embodiment, the shielding layer is usually formed by screen printing, inkjet printing or the like of ceramic ink or ultraviolet ink around the second surface 112, and after high-temperature sintering or UV curing, the shielding layer is formed, and the shielding layer is disposed around the four peripheral edge regions of the second surface 112. The color of the shielding layer 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 may also be a dark polymer film or a dimming element. The dark polymer film may be a polymer film with a colored body, 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 ionic polymer film, etc., preferably PET or PVB. For example, during the manufacture of the polymer film, a coloring component is added to achieve coloring of the body, and a black or brown polymer film is obtained. The dark polymer film may also be a polymer film with a surface printed pigment, such as printing black or brown pigments or paints on the surface of the polymer film. The dimming 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 dimming element is less than or equal to 5%, such as 3%, 2%, 1%, 0.5%, 0%. The maximum visible light transmittance of the dimming element is set as required, such as 10%, 20%, 30%, 50%, 70%, 80%, etc. Specifically, for example: the visible light transmittance of the dimming 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 the visible light transmittance in multiple scenarios.

[0048] In a possible implementation, the glass substrate 10 may further include a heat insulation layer (not shown in the figure). For example, the heat insulation layer is located in the visible area of the window glass 110, and the heat insulation layer is disposed on the surface of the inner glass plate 12 facing the outer glass plate 11 while avoiding the signal transmission area 10a. That is to say, the heat insulation layer is disposed on the third surface 121 of the inner glass plate 12 while avoiding the signal transmission area 10a. In this setting, the heat insulation layer can avoid the signal light rays emitted by the sensor 130, thereby preventing the heat insulation layer from affecting the signal transmission of the sensor 130. The heat insulation layer 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 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 may 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 may also be disposed on the second surface 112 of the outer glass plate 11. At this time, the shielding layer may 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 may 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 functional patch 20 covers the signal transmission area 10a. In this embodiment, the functional patch 20 is connected to the fourth surface 122 of the inner glass plate 12. The functional patch 20 can enable the window glass 110 to achieve functions such as visible light cut-off, enhanced transmission and coloring effects in specific wavelength bands or wave points.

[0051] In this embodiment, along the thickness direction of the glass substrate 10, the projection of the functional patch 20 partially overlaps with the shielding area 10b. That is, along the thickness direction of the glass substrate 10, the projection of the functional patch 20 partially overlaps with the projection of the shielding layer. This is because optical distortion is likely to occur when light passes through the edge of the functional patch 20, and a shielding layer is needed 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.

[0052] In this embodiment, the functional patch 20 includes a glass sheet 21, a functional layer 22, and an adhesive layer 23. Among them, the adhesive layer 23 is connected to the glass substrate 10. Specifically, the adhesive layer 23 is connected to the fourth surface 122 of the inner glass sheet 12. The adhesive layer 23 is used to fixedly connect the functional patch 20 and the glass substrate 10. Exemplarily, the thickness of the adhesive layer 23 is 0.38 mm. In this embodiment, the preparation material of the adhesive layer 23 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 adhesive layer 23 can be an OCA (Optical Clear Adhesive) optical adhesive layer or an SCA (Supplemental Coolant Additive) optical adhesive layer, and the embodiments of the present application do not impose any restrictions on this. Among them, the OCA optical adhesive layer is an adhesive mainly composed of acrylic acid.

[0053] The glass sheet 21 is connected to the surface of the adhesive layer 23 facing away from the glass substrate 10 and covers the surface of the adhesive layer 23 facing away from the glass substrate 10. Exemplarily, the shape of the glass sheet 21 is a polygon with interior angles. For example, the shape of the glass sheet 21 is a rectangle. In some other embodiments, the shape of the glass sheet 21 can also be a circle or an ellipse without interior angles, and the embodiments of the present application do not impose any restrictions on this. In this embodiment, the thickness of the glass sheet 21 is less than or equal to 0.5 mm to avoid the light distortion problem of the window glass 110 caused by the too thick glass sheet 21. The visible light transmittance of the glass sheet 21 is greater than or equal to 90% to ensure that after the functional patch 20 is connected to the glass substrate 10, the visible light transmittance of the signal transmission area 10a of the window glass 110 is relatively high.

[0054] In this embodiment, the glass sheet 21 is prepared by the float process. Among them, the angle between the pouring direction of the glass sheet 21 and the vertical direction of the glass sheet 21 is less than or equal to 20°. That is, the pouring direction of the glass sheet 21 is the vertical pouring direction of the glass sheet 21. Among them, the vertical direction of the glass sheet 21 refers to the width direction of the glass sheet 21.

[0055] In this embodiment, the included angle X between the shower direction of the glass sheet 21 and the shower direction of the glass substrate 10 is such that 0° ≤ X ≤ 15°, preferably 0° ≤ X ≤ 10°, and most preferably X = 0°. It should be understood that when the functional patch 20 is attached to the glass substrate 10 through the adhesive layer 23, the optical distortion value of the signal transmission area 10a will increase and the optical distortion increment will be unstable, resulting in a more obvious optical distortion phenomenon of the window glass 110. In this embodiment, by making the included angle X between the shower direction of the glass sheet 21 and the shower direction of the glass substrate 10 satisfy 0° ≤ X ≤ 15°, the optical distortion increment of the signal light passing through the signal transmission area 10a to the sensor 130 can be significantly reduced, the optical distortion stability of the window glass 110 can be improved, the optical distortion phenomenon of the window glass 110 can be effectively improved, so as to avoid the distortion of the optical signal light after passing through the window glass 110, ensure the high accuracy of the optical signal light received by the sensor 130 of the vehicle 100, and further contribute to ensuring good signal transmission quality of the sensor 130 of the vehicle 100 and improving the user experience.

[0056] In this embodiment, the glass sheet 21 includes a first side 211, a second side 212, and a chamfered side 213. The first side 211 and the second side 212 are spaced apart and adjacent to each other. Among them, the length a of the first side is greater than or equal to the length b of the second side. The chamfered side 213 is connected between the first side 211 and the second side 212. Among them, the angle of the chamfered side 213 is greater than 0° and less than 180°. That is to say, the angle of the chamfered side 213 is a concave angle. It should be noted that acute angles, right angles, and obtuse angles are collectively referred to as concave angles. It can also be understood that the angle of the chamfered side 213 can be an acute angle, a right angle, or an obtuse angle.

[0057] In this embodiment, the ratio Y between the radius r of the chamfered side 213 and the length a of the first side 211 1 ≥ 0.02. With this setting, stress concentration at the corners of the glass sheet 21 can be avoided. On the one hand, it can make the functional patch 20 fit the surface of the glass substrate 10, prevent the corners of the functional patch 20 from warping, thereby preventing the propagation direction of the signal light from shifting at the corners of the functional patch 20, and further contributing to improving the optical distortion problem of the window glass 110. On the other hand, it can ensure that the functional patch 20 and the glass substrate 10 are not easily chipped when they are attached, ensuring a high yield rate of the window glass 110, thus contributing to reducing the production loss of the window glass 110 and saving production costs. At the same time, bubbles are not easily generated after the functional patch 20 and the glass substrate 10 are attached, ensuring a high appearance qualification rate of the window glass 110. In addition, it can also prevent the glass sheet 21 from chipping during production processes such as cutting, breaking, grinding, polishing, and toughening, thereby ensuring a high yield rate of the functional patch 20.

[0058] Under this setting, the optical distortion increment of the signal light passing through the signal transmission area 10a to the sensor 130 can be further reduced, the optical distortion stability of the window glass 110 can be improved, and the optical distortion phenomenon of the window glass 110 can be further improved. Thus, it is possible to further avoid the distortion of the optical signal light after passing through the window glass 110, ensure the high accuracy of the optical signal light received by the sensor 130 of the vehicle 100, and further contribute to ensuring the good signal transmission quality of the sensor 130 of the vehicle 100 and improving the user experience. The ratio Y between the radius r of the chamfered edge 213 and the length b of the second side 212 2 is 0 < Y 2 ≤ 0.5, so as to make the appearance of the glass sheet 21 more harmonious and smooth, which helps to improve the overall aesthetic feeling of the functional patch 20.

[0059] The functional layer 22 is provided on the surface of the glass sheet 21 facing away from the adhesive layer 23 and covers the surface of the glass sheet 21 facing away from the adhesive layer 23. In this embodiment, the functional layer 22 is selected from at least one of an infrared anti-reflective (AR) film layer, a transparent conductive thin film, a hydrophobic film, an anti-fingerprint (AF) film, a color film, an anti-fog layer, and a visible light cut-off infrared transmission film. Among them, the infrared anti-reflective film layer is an anti-reflection film, which can reduce the reflection of the signal light of the glass substrate 10 on the sensor 130 and improve the transmittance of the signal light of the glass substrate 10 on the sensor 130. For example, the optical transmittance of the glass substrate 10 coated with the infrared anti-reflective film layer in the wavelength range of 920 nm - 980 nm is increased by at least 3% relative to the glass substrate 10 without coating the anti-reflection film, and preferably, it is increased by 3% - 9%. The visible light cut-off infrared transmission film is an optical film that can completely shield the signal transmission area 10a and does not attenuate the infrared signal transmittance. For example, the optical transmittance of the visible light cut-off 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 cut-off infrared transmission film can have the same color as the shielding layer, which is beneficial to improving the appearance beauty of the window glass 110. In addition, the color film attached to the glass sheet 21 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.

[0060] 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 more. 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 more than one. At this time, the functional patch 20 provides signal transmission windows for multiple sensors 130.

[0061] When the number of the functional patches 20 is more than one, the number of the sensors 130 is more than one. At this time, the multiple functional patches 20 and the multiple sensors 130 are arranged in one-to-one correspondence. Each functional patch 20 is spaced and oppositely arranged with one sensor 130, and provides a signal transmission window for one sensor 130. The following will take one functional patch 20 and one sensor 130 as an example for illustration.

[0062] In this embodiment, the included angle X between the pouring directions of the glass sheet 21 and the glass substrate 10, and the radius of the chamfered edge 213 of the glass sheet 21 are important factors affecting the optical performance of the signal transmission area 10a of the vehicle window glass 110. The following will change the included angle X between the pouring directions of the glass sheet 21 and the glass substrate 10, and the radius of the chamfered edge 213 of the glass sheet 21, and test the optical performance of the signal transmission area 10a of the corresponding vehicle window glass 110.

[0063] Comparative example

[0064] The comparative example provided in this application is the glass substrate 10 without the functional patch 20. Prepare the outer glass plate 11, the inner glass plate 12 and the intermediate layer 13 in the comparative example. Among them, both the outer glass plate 11 and the inner glass plate 12 are made of ultra-clear glass with a thickness of 2.1 mm. The intermediate layer 13 is made of PVB with a thickness of 0.76 mm. The intermediate layer 13 is bonded between the second surface 112 of the outer glass plate 11 and the third surface 121 of the inner glass plate 12 to obtain the glass substrate 10 of the comparative example.

[0065] Examples 1-16

[0066] Prepare the glass substrates 10 and the functional patches 20 in Preparation Examples 1-16. Connect the functional patches 20 to the fourth surface 122 of the inner glass plate 12 of the glass substrate 10 to obtain Examples 1-16. Among them, the structures and materials of the glass substrates 10 selected in Examples 1-16 are the same as those of the glass substrates 10 in the Comparative Examples, which will not be elaborated here. The structures and materials of the functional patches 20 selected in Examples 1-16 are the same. Specifically, the glass sheets 21 in the functional patches 20 selected in Examples 1-16 are all square glasses with a side length of 300 mm and a thickness of 0.5 mm. That is, the length a of the first side 211 and the length b of the second side 212 of the glass sheet 21 are both 300 mm. The functional layers 22 in the functional patches 20 selected in Examples 1-16 are all near-infrared antireflection film layers. The adhesive layers 23 in the functional patches 20 selected in Examples 1-16 are all PVBs with a thickness of 0.38 mm. The difference in the window glasses 110 selected in Examples 1-16 lies in the angle X between the pouring direction of the glass sheet 21 in the functional patch 20 and the pouring direction of the glass substrate 10, and the radius r of the chamfered edge 213 of the glass sheet 21 in the functional patch 20, which is specifically described as follows.

[0067] Examples 1-4: The angle X between the pouring direction of the glass sheet 21 in the functional patch 20 and the pouring direction of the glass substrate 10 is 0°. Among them, the chamfered edge 213 is not provided on the glass sheet 21 in Example 1. That is, the radius r of the chamfered edge 213 of the glass sheet 21 in Example 1 is 0. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 2 is 2 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 3 is 6 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 4 is 8 mm.

[0068] Examples 5-8: The angle X between the pouring direction of the glass sheet 21 in the functional patch 20 and the pouring direction of the glass substrate 10 is 3°. Among them, the chamfered edge 213 is not provided on the glass sheet 21 in Example 5. That is, the radius r of the chamfered edge 213 of the glass sheet 21 in Example 5 is 0. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 6 is 3 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 7 is 6 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 8 is 8 mm.

[0069] Examples 9 - 12: The angle X between the pouring direction of the glass sheet 21 and the pouring direction of the glass substrate 10 in the functional patch 20 is 10°. Among them, the chamfered edge 213 is not provided on the glass sheet 21 in Example 9. That is, the radius r of the chamfered edge 213 of the glass sheet 21 in Example 9 is 0. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 10 is 4 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 11 is 6 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 12 is 8 mm.

[0070] Examples 13 - 16: The angle X between the pouring direction of the glass sheet 21 and the pouring direction of the glass substrate 10 in the functional patch 20 is 15°. Among them, the chamfered edge 213 is not provided on the glass sheet 21 in Example 13. That is, the radius r of the chamfered edge 213 of the glass sheet 21 in Example 13 is 0. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 14 is 4 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 15 is 6 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 16 is 8 mm.

[0071] Examples 17 - 20: The angle X between the pouring direction of the glass sheet 21 and the pouring direction of the glass substrate 10 in the functional patch 20 is 20°. Among them, the chamfered edge 213 is not provided on the glass sheet 21 in Example 17. That is, the radius r of the chamfered edge 213 of the glass sheet 21 in Example 17 is 0. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 18 is 4 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 19 is 6 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 20 is 8 mm.

[0072] Examples 21 - 24: The angle X between the pouring direction of the glass sheet 21 and the pouring direction of the glass substrate 10 in the functional patch 20 is 90°. Among them, the chamfered edge 213 is not provided on the glass sheet 21 in Example 21. That is, the radius r of the chamfered edge 213 of the glass sheet 21 in Example 21 is 0. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 22 is 5 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 15 is 6 mm. The radius r of the chamfered edge 213 of the glass sheet 21 in Example 24 is 8 mm.

[0073] The above comparative examples and Examples 1-24 were subjected to a temperature change resistance test in accordance with the national standard for automotive safety glass, National Standard GBT 5137.5-2020. The above comparative examples and Examples 1-24 were repeatedly subjected to the temperature change resistance test 10 times. The light distortion value of the signal transmission area 10a of the window glass 110 was measured using an ISRA INNOMES Moore optical scanner, and the measurement results were recorded in Table 1. The difference between the light distortion value of the signal transmission area 10a of Examples 1-24 and the light distortion value of the signal transmission area 10a of the comparative example was calculated respectively to obtain the light distortion increment of the signal transmission area 10a of Examples 1-24, and the calculation results were recorded in Table 1.

[0074] Table 1

[0075]

[0076]

[0077] According to the above experimental results, when the angle X between the pouring direction of the glass sheet 21 of the functional patch 20 and the pouring direction of the glass substrate 10 is ≤ 15°, regardless of the length r of the radius of the chamfered edge 213 of the glass sheet 21, the light distortion value of the signal transmission area 10a is less than 150 mdpt, and the light distortion increment of the signal transmission area 10a is less than 40 mdpt. This indicates that when the angle X between the pouring direction of the glass sheet 21 of the functional patch 20 and the pouring direction of the glass substrate 10 is ≤ 15°, regardless of the length r of the radius of the chamfered edge 213 of the glass sheet 21, there will be no optical distortion in the signal transmission area 10a of the window glass 110, and the light distortion stability is good, which can ensure better transmission quality of the sensor 130 and meet the usage standards of the product.

[0078] When the angle X between the pouring direction of the glass sheet 21 of the functional patch 20 and the pouring direction of the glass substrate 10 is equal, as the radius of the chamfered edge 213 of the glass sheet 21 increases, the light distortion value of the signal transmission area 10a decreases, and the light distortion increment of the signal transmission area 10a also decreases. When the ratio Y between the radius r of the chamfered edge 213 and the length a of the first side 211 of the glass sheet 21 1 ≥ 0.02, the light distortion value of the signal transmission area 10a decreases significantly, and the light distortion increment of the signal transmission area 10a also decreases significantly. Among them, when the angle X between the pouring direction of the glass sheet 21 of the functional patch 20 and the pouring direction of the glass substrate 10 is 0°, and the ratio Y between the radius r of the chamfered edge 213 and the length a of the first side 211 of the glass sheet 21 1 ≥ 0.02, the light distortion increment of the signal transmission area 10a is the smallest, and the light distortion stability is the best. It can be understood that by making the ratio Y between the radius r of the chamfered edge 213 and the length a of the first side 211 of the glass sheet 21 1≥0.02 can avoid stress concentration at the corners of the glass sheet 21, enable the functional patch 20 to fit onto the surface of the glass substrate 10, prevent the corners of the functional patch 20 from warping after the thermal shock test, and thus avoid the deviation of the propagation direction of the signal light at the corners of the functional patch 20, which helps to improve the light distortion problem of the window glass 110.

[0079] For the window glass 110 provided in this application, by standardizing the range of the angle X between the pouring direction of the glass sheet 21 of the functional patch 20 produced by the float process and the pouring direction of the glass substrate 10, and the ratio Y between the radius r of the chamfered edge 213 and the length a of the first side 211 of the glass sheet 21 1 can significantly improve the light distortion problem in the signal transmission area 10a of the window glass 110, enhance the light distortion stability of the signal transmission area 10a, thereby preventing optical distortion in the window glass 110, avoiding the distortion of the signal light of the sensor 130 passing through the window glass 110, ensuring high accuracy of the optical signal received by the sensor 130 of the vehicle 100, and further helping to ensure good signal transmission quality of the sensor 130 of the vehicle 100 and improve the user experience.

[0080] The embodiments of the present application have been described in detail above. 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 installed on a vehicle, characterized in that: The vehicle window glass comprises a glass substrate and a functional patch, wherein the functional patch is located on a side of the glass substrate facing the interior of the vehicle; The glass substrate 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; The functional patch comprises a glass sheet, and the angle between the pouring direction of the glass sheet and the pouring direction of the glass substrate is X, 0°≤X≤15°.

2. The vehicle window glass according to claim 1, characterized in that: The angle X between the shower direction of the glass sheet and the shower direction of the glass substrate is 0°≤X≤10°.

3. The vehicle window glass according to claim 1, characterized in that: The angle between the shower direction of the glass substrate and the vertical direction of the glass substrate is less than or equal to 20°, and the angle between the shower direction of the glass sheet and the vertical direction of the glass sheet is less than or equal to 20°.

4. The vehicle window glass according to claim 1, characterized in that: The glass sheet includes a first edge, a second edge and a chamfered edge, the first edge and the second edge are spaced apart and arranged adjacent to each other, the length of the first edge is greater than or equal to the length of the second edge, the chamfered edge is connected between the first edge and the second edge, and the ratio between the radius of the chamfered edge and the length of the first edge is Y1, and Y1≥0.

02.

5. The vehicle window glass according to claim 4, characterized in that: The ratio between the radius of the chamfered edge and the length of the second edge is Y2, 0<Y2≤0.

5.

6. The vehicle window glass according to any one of claims 1 to 5, characterized in that: The optical distortion value of the signal transmission area is less than 150mdpt.

7. The vehicle window glass according to claim 1, characterized in that: The shape of the glass sheet is polygonal, circular or elliptical.

8. The vehicle window glass according to claim 1, characterized in that: The functional patch also includes an adhesive layer and a functional layer, wherein the adhesive layer is connected between the glass substrate and the glass sheet, wherein the glass sheet covers the surface of the adhesive layer facing away from the glass substrate, and the functional layer is connected to the surface of the glass sheet facing away from the adhesive layer and covers the surface of the glass sheet facing away from the adhesive layer.

9. The vehicle window glass according to claim 8, characterized in that: The material of the bonding layer is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, ionomer and acrylic acid.

10. The vehicle window glass according to claim 8, characterized in that: The bonding layer is OCA optical glue or SCA optical glue.

11. The vehicle window glass according to claim 8, characterized in that: The functional layer is selected from at least one of an infrared anti-reflection film layer, a transparent conductive film, a hydrophobic film, an anti-fingerprint film, a color film and an anti-fog layer.

12. The vehicle window glass according to claim 1, characterized in that: The glass substrate is a single piece of glass; Alternatively, the glass substrate is a laminated glass, the laminated glass comprises 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 arranged opposite to each other, and the intermediate layer is located between the outer glass plate and the inner glass plate; The functional patch is located on a side of the inner glass plate facing away from the outer glass plate.

13. The vehicle window glass according to claim 1, characterized in that: The thickness of the glass sheet is less than or equal to 0.5 mm.

14. The vehicle window glass according to claim 1, characterized in that: The visible light transmittance of the glass sheet is greater than or equal to 90%.

15. 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 14, 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.

16. The vehicle according to claim 15, 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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