Laminated glass and vehicle

Abstract

Laminated glass and a vehicle. The laminated glass comprises: an outer glass plate (1), an inner glass plate (8) and a bonding layer for bonding the outer glass plate (1) and the inner glass plate (8); the laminated glass has an upper edge (202) and a lower edge (102), and the laminated glass comprises a dimming area (201) on the side close to the upper edge (202) and a visual area (101) on the side close to the lower edge (102), and a signal transmission area is arranged in the visual area (101); the bonding layer comprises a dimming element (5), and the dimming element (5) is located in the dimming area (201); and at least in the signal transmission area, the thickness of the bonding layer on the side close to the upper edge (202) is greater than the thickness of the bonding layer on the side close to the lower edge (102).

Description

Laminated glass and vehicles

[0001] Related applications

[0002] This application claims priority to the Chinese invention patent application with application number 202311643537.5 filed on December 4, 2023, and cites the entire contents disclosed in the above patent application as part of this application. Technical Field

[0003] The present disclosure relates to the technical field of automobile glass, and in particular to a laminated glass and a vehicle. Background Art

[0004] Currently, electric vehicles are beginning to use panoramic windshields (also known as panoramic windshields). Compared to existing windshields, panoramic windshields extend the top edge of the windshield toward the roof, covering at least a portion of the roof, thus providing an extended vertical field of view for the driver and passengers.

[0005] While panoramic windshields expand the driver's field of view, they can also pose a risk of excessive light in certain scenarios. To address this issue, one approach is to create a gradient shadow design in the upper middle portion of the glass, such as a gradient colored ribbon.

[0006] However, with the continuous development of technology, people's demand for the functionality of panoramic windshields is also increasing. In order to better meet the user's driving experience, it is necessary to further optimize the existing windshield. Summary of the Invention

[0007] In response to the defects of the existing technology, the embodiments of the present disclosure provide a laminated glass and a vehicle that can meet the user's demand for color change of the skylight above the head and meet the demand for improving the intelligence of the panoramic windshield, thereby improving the user's driving experience.

[0008] The specific technical solutions of the embodiments of the present disclosure are:

[0009] A laminated glass, comprising:

[0010] An outer glass plate, an inner glass plate, and an adhesive layer for bonding the outer glass plate and the inner glass plate; the laminated glass has an upper edge and a lower edge, the laminated glass includes a dimming area near the upper edge and a visual area near the lower edge, and a signal transmission area is provided in the visual area; the adhesive layer includes a dimming element, and the dimming element is located in the dimming area; the thickness of the adhesive layer near the upper edge is greater than the thickness near the lower edge at least in the signal transmission area.

[0011] In an optional embodiment, the laminated glass further includes a first shielding layer, which is disposed on the inner surface of the outer glass plate and covers at least one side of the dimming element close to the lower edge of the laminated glass.

[0012] In an optional embodiment, in the extension direction from the lower edge to the upper edge, the length of the laminated glass is between 1300 mm and 1900 mm.

[0013] In an optional embodiment, the dimming element includes any one of the following: a dyed liquid crystal film, an electrochromic film, a suspended particle film, and a polymer dispersed liquid crystal film.

[0014] In an optional embodiment, the adhesive layer includes a colored layer with a visible light transmittance of less than 50%, the colored layer at least partially covers the dimming area, and the colored layer and the dimming element are stacked.

[0015] In an optional embodiment, the adhesive layer includes at least a first adhesive layer and a second adhesive layer, and the first adhesive layer and the second adhesive layer respectively cover two surfaces of the dimming element.

[0016] In an optional embodiment, the colored layer is located on the first adhesive layer or the second adhesive layer, and the colored layer is a film layer with uniform color at all locations or a gradient film layer with color gradually becoming lighter from the upper edge to the lower edge.

[0017] In an optional embodiment, the colored layer is located in the first adhesive layer, the first adhesive layer is a colored layer, or the first adhesive layer includes a transparent film covering the visible area and a colored layer covering the dimming area, and the transparent film and the colored layer have the same thickness; the second adhesive layer is a transparent film.

[0018] In an optional embodiment, when the first adhesive layer includes a transparent film covering the visible area and a colored layer covering the dimming area, the first shielding layer at least covers the joint position between the transparent film and the colored layer.

[0019] In an optional embodiment, the colored layer is located on the second adhesive layer; the first adhesive layer is a transparent film; and the second adhesive layer is a gradient film layer whose color gradually becomes lighter from the upper edge to the lower edge.

[0020] In an optional embodiment, the thickness of the second adhesive layer at least in the signal transmission area on the side close to the upper edge is greater than the thickness on the side close to the lower edge.

[0021] In an optional embodiment, a second notch is provided on the second adhesive layer, a wedge-shaped film is provided in the second notch, and the thickness of the wedge-shaped film decreases from the upper edge to the lower edge.

[0022] In an optional embodiment, the maximum thickness difference between the wedge-shaped film and the second adhesive layer is within 0.5 mm.

[0023] In an optional embodiment, the adhesive layer further includes a carrier layer used as a carrier of the dimming element, and a first gap for filling the dimming element is provided on the carrier layer.

[0024] In an optional embodiment, the width of the first notch from the edge of the carrier layer is at least 30 mm.

[0025] In an optional embodiment, the thickness of the carrier layer is the same as the thickness of the dimming element; or, when the first adhesive layer fills the first gap, the sum of the thickness of the first adhesive layer and the dimming element is equal to the thickness of the carrier layer.

[0026] In an optional embodiment, the laminated glass further includes a second shielding layer, which is disposed on the inner surface or outer surface of the inner glass plate and covers at least one side of the dimming element close to the lower edge of the laminated glass.

[0027] A vehicle comprises the above-mentioned laminated glass.

[0028] The technical solution disclosed in this disclosure has the following significant beneficial effects:

[0029] The laminated glass provided in the embodiments of the present disclosure can realize an intelligent dimming function above the heads of the driver and passengers by providing a dimming element in the dimming zone near the upper edge, thereby meeting the driver and passengers' requirements for the color change function of the overhead sunroof; by providing a signal transmission zone in the visible area near the lower edge, it can meet the intelligent requirements of large front windshield laminated glass, and in this signal transmission zone, an adhesive layer with a thickness decreasing from top to bottom is provided, at least in the range corresponding to the driver's line of sight, to correct the glass secondary phase value, thereby minimizing or even eliminating ghosting as much as possible, further improving the accuracy of the advanced driver assistance system.

[0030] With reference to the following description and drawings, specific embodiments of the present disclosure are disclosed in detail, indicating the manner in which the principles of the present disclosure can be employed. It should be understood that the embodiments of the present disclosure are not limited in scope thereby. Within the spirit and scope of the appended claims, the embodiments of the present disclosure include many variations, modifications, and equivalents. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to facilitate understanding of the present disclosure. They do not specifically limit the shapes and proportional dimensions of the various components of the present disclosure. Those skilled in the art, under the guidance of the present disclosure, can select various possible shapes and proportional dimensions to implement the present disclosure according to specific circumstances.

[0032] FIG1 is a schematic structural diagram of a laminated glass provided in an embodiment of the present disclosure;

[0033] FIG2 is a schematic structural diagram of a laminated glass provided in an embodiment of the present disclosure;

[0034] FIG3 is a schematic structural diagram of a laminated glass provided in an embodiment of the present disclosure;

[0035] FIG4 is an exploded schematic diagram of a laminated glass provided in a first embodiment of the present disclosure;

[0036] FIG5 is an exploded schematic diagram of a laminated glass provided in a second embodiment of the present disclosure;

[0037] FIG6 is an exploded schematic diagram of a laminated glass provided in a third embodiment of the present disclosure;

[0038] FIG7 is an exploded schematic diagram of a laminated glass provided in a fourth embodiment of the present disclosure;

[0039] FIG8 is an exploded schematic diagram of a laminated glass provided in a fifth embodiment of the present disclosure;

[0040] FIG9 is an exploded schematic diagram of a laminated glass provided in a sixth embodiment of the present disclosure;

[0041] FIG10 is an exploded schematic diagram of a laminated glass provided in a seventh embodiment of the present disclosure;

[0042] FIG11 is an exploded schematic diagram of a laminated glass provided in an eighth embodiment of the present disclosure;

[0043] FIG12 is an exploded schematic diagram of a laminated glass provided in a ninth embodiment of the present disclosure;

[0044] FIG13 is an exploded schematic diagram of a laminated glass provided in a tenth embodiment of the present disclosure;

[0045] FIG14 is an exploded schematic diagram of a laminated glass provided in an eleventh embodiment of the present disclosure;

[0046] FIG15 is an exploded schematic diagram of a laminated glass provided in a twelfth embodiment of the present disclosure;

[0047] FIG16 is an exploded schematic diagram of a laminated glass provided in a thirteenth embodiment of the present disclosure;

[0048] FIG17 is a schematic diagram of the splicing of a carrier layer and a dimming element provided in an embodiment of the present disclosure;

[0049] FIG18 is a schematic diagram of an optical path of a signal passing through an area provided in an embodiment of the present disclosure;

[0050] FIG. 19 is a schematic diagram showing the principle of determining the position, shape, and size of the wedge-shaped film based on the optical path schematic diagram of the signal projection area provided in FIG. 18 .

[0051] Figure numerals of the present disclosure: 1. outer glass plate; 2. tinting layer; 3. first adhesive layer; 4. carrier layer; 41. first notch; 5. dimming element; 6. second adhesive layer; 61. second notch; 7. wedge-shaped film; 8. inner glass plate; 9. first shielding layer; 10. second shielding layer; 101. visible area; 201. dimming area; 202. upper edge; 102. lower edge; 301. human head model. DETAILED DESCRIPTION

[0052] The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present disclosure and are not used to limit the scope of the present disclosure. After reading the present disclosure, various equivalent modifications of the present disclosure by those skilled in the art will fall within the scope defined by the claims attached to the present disclosure.

[0053] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0054] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. The terms used herein in the specification of this disclosure are only for the purpose of describing specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0055] The present disclosure provides a laminated glass, which, when used in a panoramic windshield of a vehicle, can meet the user's demand for color change of the skylight above the head and meet the demand for improving the intelligence of the large windshield, thereby improving the user's comprehensive driving experience.

[0056] Please refer to Figures 1 to 16 as a whole. In an embodiment of the present disclosure, a laminated glass is provided. The laminated glass may include: an outer glass plate 1, an inner glass plate 8, and an adhesive layer for bonding the outer glass plate 1 and the inner glass plate 8; the laminated glass has an upper edge 202 and a lower edge 102, the laminated glass includes a dimming area 201 on the side close to the upper edge 202 and a visible area 101 on the side close to the lower edge 102, and a signal transmission area is provided in the visible area 101; the adhesive layer includes a dimming element 5, and the dimming element 5 is located in the dimming area 201; the thickness of the adhesive layer on the side close to the upper edge 202 in at least the signal transmission area is greater than the thickness on the side close to the lower edge 102.

[0057] In the embodiments of the present disclosure, the laminated glass primarily comprises an outer glass sheet 1, an inner glass sheet 8, and an adhesive layer. The embodiments of the present disclosure are primarily illustrated using the laminated glass as a panoramic windshield for a vehicle. Applications of the laminated glass in other scenarios can be analogized with the present disclosure.

[0058] Please refer to Figures 1, 2, and 3 in conjunction with one another. A vehicle's panoramic windshield includes the vehicle's front windshield and a portion extending from the top of the windshield toward the vehicle's roof, forming a viewing area 101 and a dimming area 201. The viewing area 101 is located approximately in the lower-middle portion of the panoramic windshield. The dimming area 201 is located approximately in the upper portion of the panoramic windshield, opposite the top of the front passenger's head. As shown in Figure 1, the dimming area 201 specifically covers a front human head model 301. The viewing area 101 is located at the vehicle's front windshield.

[0059] As shown in Figure 2 , the length L of the panoramic windshield, from the lower edge 102 to the upper edge 202 along the entire length of the laminated glass, is between 1300 mm and 1900 mm, thereby forming a panoramic windshield structure for the vehicle. The length L can be adjusted based on factors such as the vehicle model and production process, and the disclosed embodiments do not completely exclude the possibility of the length L being less than 1300 mm or greater than 1900 mm.

[0060] As shown in Figure 3, the panoramic windshield has a certain curvature extending from the lower edge 102 to the upper edge 202. The maximum distance (i.e., spherical dimension) H1 of the laminated glass from the line connecting the lower edge 102 and the upper edge 202 is at least 50 mm. This spherical dimension H1 can be adjusted based on factors such as the vehicle model and production process, and may be less than 50 mm.

[0061] The outer glass plate 1 includes a first surface and a second surface opposite to each other, wherein the first surface is the outer surface and contacts the vehicle exterior. The inner glass plate 8 includes a third surface and a fourth surface opposite to each other, wherein the fourth surface is the inner surface and contacts the vehicle interior.

[0062] The outer glass panel 1 and inner glass panel 8 must meet predetermined transmittance requirements. Specifically, the transmittance of both the outer glass panel 1 and the inner glass panel 8 must be greater than 70%. Specifically, the glass color composition of the outer glass panel 1 and the inner glass panel 8 can be any combination of SG / G / C (dark green / green / transparent), not limited to the inner and outer order. When this laminated glass is used in a panoramic windshield of a vehicle, the single-layer thickness of the outer glass panel 1 and the inner glass panel 8 must be ≥ 2.0 mm to ensure both a good yield during production and reliability and safety during use.

[0063] The adhesive layer is located in the middle layer of laminated glass, and its primary function is to bond two adjacent surfaces to each other. When the adhesive layer is used in a vehicle's panoramic windshield, the material of the adhesive layer includes, but is not limited to, polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyolefin thermoplastic elastomer (POE), polycarbonate (PC), or polymethyl methacrylate (PMMA). In certain specific embodiments, the primary material of the adhesive layer can be polyvinyl butyral (PVB). PVB has excellent adhesion to glass and is optically transparent after lamination. In certain embodiments, the thickness of the adhesive layer is between 0.3 mm and 2 mm. In certain specific embodiments, the thickness of the adhesive layer can be 0.38 mm, 0.76 mm, 1.14 mm, 1.52 mm, etc.

[0064] The number of adhesive layers can vary depending on the specific composition of the laminated glass, the arrangement of the functional layers, and other factors. Specifically, it can include at least two layers, for example, two layers, three layers, or more than three layers. For example, when the adhesive layer includes a first adhesive layer 3 and a second adhesive layer 6, the first adhesive layer 3 and the second adhesive layer 6 respectively cover the two surfaces of the dimming element 5. The following description will be combined with different embodiments for explanation.

[0065] The laminated glass includes a dimming zone 201 near the upper edge 202 and a viewing zone 101 near the lower edge 102. Within the viewing zone 101 is a signal transmission zone, specifically designed to allow optical signals from devices such as lidar, sensors, or ADAS (Advanced Driving Assistance System) equipment to pass through. In particular, the signal transmission zone ensures good transmittance for infrared signals, meeting the intelligent requirements of large front laminated glass.

[0066] Among them, ADAS, or advanced driver assistance system, uses a variety of sensors installed on the car (such as millimeter-wave radar, lidar, monocular / binocular cameras, and satellite navigation, etc.) to sense the surrounding environment at any time during the car's driving, collect data, and identify, detect and track static and dynamic objects. It also combines navigation map data to perform systematic calculations and analysis, so that the driver can be aware of possible dangers in advance, effectively increasing the comfort and safety of car driving.

[0067] The thickness of the adhesive layer at least near the upper edge 202 in the signal transmission area is greater than that near the lower edge 102. By providing an adhesive layer with decreasing thickness from top to bottom in the signal transmission area, the optical sub-phase requirement can be met.

[0068] Specifically, the incident light enters the first surface (i.e., the outer surface) of the outer glass plate 1 at a certain angle of incidence and passes through the laminated glass to reach the observation point. The light bends when passing through the laminated glass (i.e., light refraction occurs). The refraction of light causes the initial image of the observed object to shift / offset. In addition, some of the light entering the laminated glass from the incident light is reflected back from the fourth surface (i.e., the inner surface) of the inner glass plate 8 and exits the laminated glass. A portion of the reflected light is reflected back again from the first surface of the outer glass plate 1, and the image received at the observation point will produce ghosting. In the present disclosure, by providing an adhesive layer with a decreasing thickness from top to bottom in the signal transmission area, ghosting can be minimized or even eliminated.

[0069] Specifically, the adhesive layer provided in the signal transmission area can be in the form of a wedge-shaped film, which can improve the glass subphase value. The wedge-shaped film can be provided in the signal transmission area by filling the second adhesive layer 6. When the wedge-shaped film 7 is provided in the second adhesive layer 6 as a filling layer, the maximum thickness difference between the wedge-shaped film 7 and the second adhesive layer 6 is controlled within 0.5 mm to avoid optical deformation of the glass caused by an excessive thickness difference. In certain further embodiments, the maximum thickness difference between the wedge-shaped film 7 and the second adhesive layer 6 is controlled within 0.4 mm, 0.3 mm, or 0.2 mm.

[0070] When the wedge-shaped film 7 is provided by filling, a second notch 61 can be provided in the second adhesive layer 6. Since the wedge-shaped film 7 fills the second notch 61, its shape matches that of the second notch 61. Referring to Figures 18 and 19 , the position, shape, and dimensions of the wedge-shaped film 7 can be determined as follows: the intersection of the optical path in the signal light-transmitting area and the inner surface of the glass forms a closed figure E, and the wedge-shaped film 7 is obtained by equidistantly translating this closed figure E. The distance A between the filling area corresponding to the second notch 61 and the intersection is ≥ 1.5 mm. In certain situations where margin requirements are high, A is ≥ 10 mm to avoid the ink printing boundary; to ensure the functionality and operability of the filling area, B is ≥ 10 mm + A. A larger B is preferred, provided it does not affect the optical performance of other areas.

[0071] Specifically, the shape of the second notch 61 can be square, rectangular, trapezoidal, etc. In some specific embodiments, the minimum height of the second notch 61 is ≥30 mm, and the minimum width of the second notch 61 is ≥30 mm.

[0072] In addition, a wedge-shaped film with a gradient thickness can be installed throughout the entire laminated glass area. The specific angle and size of the wedge-shaped film can be customized based on the actual vehicle application and is subject to theoretical data simulation. This disclosure does not make any specific restrictions here.

[0073] The adhesive layer also includes a dimming element 5, which is located in the dimming area 201. The dimming element 5 is used to implement the intelligent dimming function of the dimming area 201 above the driver's head. The dimming element adopts a diaphragm structure and can be better arranged in the adhesive layer.

[0074] Specifically, the dimming element 5 can be at least one of a liquid crystal dye (LC dye) film, an electrochromism (EC) film, a suspended particle device (SPD) film, and a polymer dispersed liquid crystal (PDLC) film. Of course, the dimming element 5 can also use other film forms and is not limited to the above description. Those skilled in the art may make other modifications based on the technical essence of this disclosure. However, as long as the functions and effects achieved are the same or similar to those of the present disclosure, they should be covered by the scope of protection of this disclosure.

[0075] In the embodiments of the present disclosure, the dimming element 5 is described by taking the EC film as an example. When the dimming element 5 uses other forms of films, the embodiments of the EC film can be adaptively referred to.

[0076] When an EC film is used for the dimming element 5, it is composed of five layers, namely, a PET protective layer, an electrochromic layer, a solid electrolyte, an ion storage layer, and a PET protective layer. Accordingly, the adhesive layer may also include a carrier layer 4, which serves as a carrier for the dimming element 5. The carrier layer 4 is provided with a first notch 41 for filling the dimming element 5. The carrier layer 4 secures the position of the dimming element 5, ensuring a more stable bond between the dimming element 5 and the glass. The carrier layer also protects the dimming element 5.

[0077] In some embodiments, the thickness of the carrier layer 4 can be the same as the thickness of the dimming element 5. Specifically, when the dimming element 5 is set using a PVB film as a carrier, a PVB film with a certain thickness can be selected, such as a transparent PVB film with a thickness of 0.38 mm. The PVB film used as a carrier is defined as the carrier layer 4. A first notch 41 can be provided in the carrier layer 4 at the dimming area 201, and the position of the first notch 41 is opposite to the top of the head area of ​​the front passenger. The first notch 41 is used to fill the dimming element 5, such as an EC film. The thickness of the EC film is the same as or similar to that of the carrier layer 4, which can avoid the formation of a significant thickness difference. For example, when the carrier layer 4 is 0.38 mm, the thickness of the EC film is also 0.38 mm, ensuring that the EC film achieves the best splicing effect on films of equal thickness.

[0078] Please refer to FIG. 17 . The first notch 41 has a width of ≥30 mm from the edge of the carrier layer 4 , which ensures that the outer periphery of the dimming element 5 is reliably sealed to prevent moisture from entering and causing the dimming element 5 to malfunction.

[0079] Among them, the shape of the first notch 41 can be regular or irregular shapes such as rectangle, trapezoid, etc. Of course, the specific shape of the first notch 41 is not limited to the above examples. It can vary according to the structure of the vehicle used, etc., and the present disclosure does not make specific limitations here.

[0080] The laminated glass provided in the embodiment of the present disclosure can realize an intelligent dimming function above the heads of the driver and passengers by providing a dimming element 5 in the dimming zone 201 on the side close to the upper edge 202, thereby meeting the driver and passengers' needs for the color change function and sunshade of the overhead skylight; by providing a signal transmission area in the visual area 101 on the side close to the lower edge 102, it can meet the intelligent needs of the panoramic front windshield, and in this signal transmission area, at least in the range corresponding to the driver's line of sight, an adhesive layer with a thickness decreasing from top to bottom is provided, which can correct the glass sub-phase value, thereby minimizing or even eliminating ghosting as much as possible, thereby reducing the optical interference to ADAS-related optical equipment, and further improving the accuracy of the advanced driver assistance system.

[0081] Furthermore, in some embodiments, the laminated glass may also include a first shielding layer 9, which is arranged on the inner surface (i.e., the second surface) of the outer glass plate 1. The first shielding layer 9 covers at least one side of the dimming element 5 close to the lower edge 102 of the laminated glass, thereby ensuring that the splicing marks between the boundary of the dimming element 5 and the PVB (carrier layer 4) cannot be seen from the outside of the vehicle.

[0082] Specifically, the first shielding layer 9 can be formed by ink printing. When the first shielding layer 9 is formed by ink printing, the manufacturing difficulty is low and no negative impact is brought to the surface of the laminated glass.

[0083] Of course, the formation method of the first shielding layer 9 is not limited to the above example, that is, it is not limited to printed graphic modeling, it only needs to meet the shielding function. Technical personnel in the relevant field may make other changes inspired by the technical essence of this disclosure, but as long as the functions and effects achieved are the same or similar to those of this disclosure, they should be covered within the scope of protection of this disclosure.

[0084] The effective shielding width of the first shielding layer 9 is ≥5 mm. Specifically, the first shielding layer 9 can be a strip-shaped area with a certain width. Of course, the specific shape and structure of the first shielding layer 9 is not specifically limited in this disclosure, and only needs to ensure good aesthetic requirements of the appearance.

[0085] In addition, in some embodiments, the first shielding layer 9 can also be arranged along the edge of the outer glass plate 1 and cover the edge of the outer glass plate 1 to shield the edge of the laminated glass. When the laminated glass is installed on the vehicle body, the structure of the connection between the glass and the vehicle body can be prevented from being seen from the outside of the vehicle, thereby achieving an aesthetic effect.

[0086] Furthermore, in some embodiments, the laminated glass may further include a second shielding layer 10, which is disposed on the inner or outer surface of the inner glass plate 8, and the second shielding layer 10 at least covers the side of the dimming element 5 close to the lower edge 102 of the laminated glass.

[0087] A second shielding layer may be provided on the inner surface (i.e., the third surface) or the outer surface (i.e., the fourth surface) of the inner glass panel 8. The second shielding layer 10 in the laminated glass is provided to cover at least the side of the dimming element 5 near the lower edge 102 of the laminated glass. This ensures that when the vehicle interior is bright, for example, when high-brightness lighting is turned on, the junction between the edge of the dimming element 5 and the PVB (carrier layer 4) is not visible from the vehicle interior.

[0088] In addition, in some embodiments, the second shielding layer 10 can also be set along the edge of the inner glass plate 8 and cover the edge of the inner glass plate 8 to shield the edge of the laminated glass. When the laminated glass is installed on the vehicle body, it can prevent the structure of the connection between the glass and the vehicle body from being seen from the inside of the vehicle, thereby playing an aesthetic role.

[0089] In some embodiments, the adhesive layer includes a colored layer 2 having a visible light transmittance of less than 50%. The colored layer 2 at least partially covers the dimming region 201. The colored layer 2 and the dimming element 5 are stacked. In some embodiments, the colored layer 2 completely covers the dimming region 201, while in other embodiments, the dimming region 201 completely covers the colored layer 2.

[0090] The tinting layer 2 is primarily used in conjunction with the dimming element 5. For example, when the dimming element 5 utilizes an EC film, the EC film can adjust the overall visible light transmittance (TL) of the transparent laminated glass within a range of 10% to 60%. In combination with a tinting layer 2 having a lower visible light transmittance, such as a gray PVB film, the overall visible light transmittance (TL) of the laminated glass can be adjusted within a range of 2% to 10%. The specific color of the tinting layer 2 is not limited to the gray color used in the example above; it can also be other colors. The dimming element 5's adjustment range for the visible light transmittance (TL) is also not limited to the aforementioned ranges of 10% to 60% or 2% to 10%. This disclosure does not limit the specific color of the tinting layer 2.

[0091] Alternatively, in some embodiments, when the adhesive layer includes a tinting layer 2, a tinting layer 2 is also disposed within the first notch 41, with the combined thickness of the tinting layer 2 and the dimming element 5 being equal to the thickness of the carrier layer 4. For example, the carrier layer 4 may be made of a 0.76mm thick PVB film, the tinting layer 2 may be made of a 0.38mm thick tinted PVB film, and the dimming element 5 may be made of a 0.38mm thick EC film. When the tinting layer 2 is disposed within the first notch 41 by filling, the dimensions of the tinting layer 2 are consistent with those of the dimming element 5. When the tinting layer 2 is also disposed within the first notch 41 by filling, the periphery of the tinting layer 2 is effectively constrained by the frame of the first notch 41 during filling, thereby improving the yield rate of laminated glass.

[0092] In addition, in some embodiments, the colored layer 2 can be a gradient film whose color gradually becomes lighter from the upper edge to the lower edge. If the area of ​​the gradient film is consistent with the overall area of ​​the adhesive layer, the side of the gradient film close to the visible area is a transparent film so as not to affect the line of sight of the driver and passengers. In some specific embodiments, the visible light transmittance within the visible area is greater than 70%.

[0093] The laminated glass provided by the present disclosure will be described in detail below with reference to specific drawings and embodiments.

[0094] As shown in FIG4 , in the first embodiment, the laminated glass includes: an outer glass plate 1 , a first adhesive layer 3 , a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , a wedge film 7 , an inner glass plate 8 and a first shielding layer 9 .

[0095] The first shielding layer 9 is located on the inner surface of the outer glass plate 1 and is primarily used to shield the splicing location of the dimming element 5 to prevent it from affecting the overall appearance of the vehicle when viewed from the outside. The first shielding layer 9 can be a strip of a certain width, with the width of the strip being at least 5 mm. The first shielding layer 9 is used to shield at least the splicing location on the lower side of the dimming element 5, which is relatively more likely to affect the appearance. Of course, it is not ruled out that the first shielding layer 9 is provided to fully cover the splicing location of the dimming element 5.

[0096] The colored layer 2 is located on the first adhesive layer 3. The first adhesive layer 3 comprises a transparent PVB film and a colored layer 2 of equal thickness, which are spliced ​​together to form the first adhesive layer 3. The first shielding layer 9 covers at least the splicing location between the transparent PVB film and the colored layer 2. Specifically, the first adhesive layer 3 comprises a transparent PVB film with a thickness of 0.38 mm and a colored PVB film sheet with a thickness of 0.38 mm. The two films of equal thickness are spliced ​​together to form the first adhesive layer 3.

[0097] The carrier layer 4 is provided with a first notch 41 for filling the dimming element 5. The thickness of the carrier layer 4 is the same as that of the dimming element 5. Specifically, the carrier layer 4 can be made of a transparent PVB film with a thickness of 0.38 mm, and the dimming element 5 can be made of an EC film with a thickness of 0.38 mm.

[0098] The second adhesive layer 6 is provided with a second notch 61, into which the wedge film 7 is disposed. The thickness of the wedge film 7 decreases from the upper edge 202 to the lower edge 102. Specifically, the second adhesive layer 6 can be made of a single sheet of transparent PVB film with a thickness of 0.76 mm. The second notch 61 is provided in the second adhesive layer 6 at a position corresponding to the signal transmission area for filling with the wedge film 7.

[0099] In this embodiment, the wedge-shaped film 7 is provided in the second adhesive layer 6 by filling, which can effectively reduce the thickness of the laminated glass and lower the production cost. Moreover, during the filling process, the wedge-shaped film 7 can be effectively constrained on all sides by the second notch 61, thereby ensuring the yield rate of the laminated glass during the production process.

[0100] As shown in FIG5 , in the second embodiment, the laminated glass includes: an outer glass plate 1 , a first adhesive layer 3 , a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , a wedge film 7 , an inner glass plate 8 , a first shielding layer 9 and a second shielding layer 10 .

[0101] The second embodiment differs from the first embodiment in that the laminated glass further comprises a second shielding layer 10. The second shielding layer 10 is disposed on the inner surface of the inner glass sheet 8 and covers at least one side of the dimming element 5 near the lower edge 102 of the laminated glass.

[0102] The laminated glass is provided with a second shielding layer 10 to cover at least the side of the dimming element 5 near the lower edge 102 of the laminated glass, thereby ensuring that when the interior of the vehicle is bright, for example, when a high-brightness lighting device is turned on, the splicing mark between the boundary of the dimming element 5 and the PVB film (carrier layer 4) is not visible from the interior of the vehicle. When both the first shielding layer 9 and the second shielding layer 10 are provided in the laminated glass, the second shielding layer 10 and the first shielding layer 9 can be provided in overlapping positions, that is, both cover the splicing position of the dimming element 5 that needs to be shielded.

[0103] As shown in FIG6 , in the third embodiment, the laminated glass includes: an outer glass plate 1 , a first adhesive layer 3 , a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , an inner glass plate 8 , a first shielding layer 9 and a second shielding layer 10 .

[0104] In this third embodiment, the main difference from the second embodiment is that the second adhesive layer 6 is a whole transparent wedge-shaped film 7, that is, the second adhesive layer 6 is a whole wedge-shaped film 7 instead of forming the second adhesive layer 6 by filling the wedge-shaped film 7 in a PVB film of uniform thickness.

[0105] As shown in Figure 7, in the fourth embodiment, the laminated glass includes: an outer glass plate 1, a colored layer 2 (a first adhesive layer 3), a carrier layer 4, a dimming element 5, a second adhesive layer 6, a wedge film 7, an inner glass plate 8, a first shielding layer 9 and a second shielding layer 10.

[0106] The main difference between this fourth embodiment and the second embodiment is that the first adhesive layer 3 and the colored layer 2 are integrated into one layer. In other words, the first adhesive layer 3 is a colored layer 2 whose size matches the first notch 41. The combined thickness of the colored layer 2 and the dimming element 5 is equal to the thickness of the carrier layer 4.

[0107] For example, the carrier layer 4 can be made of a 0.76mm thick PVB film, the tinting layer 2 can be made of a 0.38mm thick tinted PVB film, and the dimming element 5 can be made of a 0.38mm thick EC film. When the tinting layer 2 is placed within the first gap 41 by filling, this helps reduce the thickness of the laminated glass, thereby reducing its weight and cost. When the first adhesive layer 3 and the tinting layer 2 are integrated into one layer, this is equivalent to eliminating one layer of PVB film (the first adhesive layer 3).

[0108] In addition, when the colored layer 2 is also arranged in the first gap 41 by filling, the periphery of the colored layer 2 can be effectively constrained by the frame of the first gap 41 during filling, thereby improving the yield rate of the laminated glass.

[0109] As shown in Figure 8, in the fifth embodiment, the laminated glass includes: an outer glass plate 1, a colored layer 2 (a first adhesive layer 3), a carrier layer 4, a dimming element 5, a second adhesive layer 6 (a wedge-shaped film 7), an inner glass plate 8, a first shielding layer 9 and a second shielding layer 10.

[0110] In this fifth embodiment, the main difference from the fourth embodiment is that the second adhesive layer 6 is a whole transparent wedge-shaped film 7, that is, the second adhesive layer 6 is a whole wedge-shaped film 7 instead of forming the second adhesive layer 6 by filling the wedge-shaped film 7 in a PVB film of uniform thickness.

[0111] As shown in FIG9 , in the sixth embodiment, the laminated glass includes: an outer glass plate 1 , a tinted layer 2 (a first adhesive layer 3 ), a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , an inner glass plate 8 and a first shielding layer 9 .

[0112] The sixth embodiment is mainly different from the fifth embodiment in that the second shielding layer 10 on the inner glass plate 8 is eliminated.

[0113] As shown in Figure 10, in the seventh embodiment, the laminated glass includes: an outer glass plate 1, a colored layer 2 (first adhesive layer 3), a carrier layer 4, a dimming element 5, a second adhesive layer 6, a wedge film 7, an inner glass plate 8 and a first shielding layer 9.

[0114] The seventh embodiment is different from the sixth embodiment in that:

[0115] In this embodiment, the wedge-shaped film 7 is provided in the second adhesive layer 6 by filling, which can reduce production costs. Moreover, during filling, the wedge-shaped film 7 can be effectively constrained on all sides by the second notch 61, thereby ensuring the yield rate of the laminated glass.

[0116] Alternatively, when the seventh embodiment is compared with the fourth embodiment, the main difference between the seventh embodiment and the fourth embodiment is that the second shielding layer 10 on the inner glass plate 8 is eliminated.

[0117] As shown in Figure 11 or Figure 12, in some embodiments, the second adhesive layer 6 can be a gradient film with a color that gradually deepens from the lower edge 102 to the upper edge 202 and a uniform thickness. Using this gradient film as the second adhesive layer 6 can serve to set a coloring layer in the dimming area; the first adhesive layer 3 is a transparent PVB film filled in the first gap 41.

[0118] As shown in FIG11 , in an eighth embodiment, the laminated glass may include: an outer glass pane 1, a first adhesive layer 3, a carrier layer 4, a dimming element 5, a second adhesive layer 6, a wedge film 7, an inner glass pane 8, and a first shielding layer 9. In this embodiment, a second shielding layer 10 may or may not be included.

[0119] The eighth embodiment differs primarily from the seventh embodiment in that the second adhesive layer 6 comprises a PVB film with a uniform thickness and a gradually darkening color from the lower edge 102 to the upper edge 202. For example, the second adhesive layer 6 comprises a PVB film with a gradient color and a thickness of 0.76 mm, a second notch 61 being provided in the second adhesive layer 6 for receiving the wedge-shaped film 7, and the first adhesive layer 3 comprises a transparent PVB film. For another example, the second adhesive layer 6 comprises a single sheet of wedge-shaped film 7, i.e., the second adhesive layer 6 comprises a single sheet of wedge-shaped film 7, rather than a sheet of uniformly thick PVB film filled with the wedge-shaped film 7.

[0120] As shown in Figure 12, in the ninth embodiment, the laminated glass may include: an outer glass plate 1, a first adhesive layer 3, a carrier layer 4, a dimming element 5, a second adhesive layer 6, a wedge film 7, an inner glass plate 8, a first shielding layer 9 and a second shielding layer 10.

[0121] The ninth embodiment differs from the eighth embodiment in that a second shielding layer 10 is further provided on the inner glass plate 8. In addition, in this embodiment, the wedge-shaped film 7 is provided in the second adhesive layer 6 by filling.

[0122] As shown in Figures 13 to 16, in some embodiments, the second adhesive layer 6 is a whole piece of gradient wedge-shaped film 7. Specifically, the color of the whole piece of gradient wedge-shaped film 7 gradually darkens from the lower edge 102 of the laminated glass to the upper edge 202 of the laminated glass.

[0123] As shown in FIG. 13 , in the tenth embodiment, the laminated glass may include: an outer glass plate 1 , a first adhesive layer 3 , a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , an inner glass plate 8 and a first shielding layer 9 .

[0124] The main difference between the tenth embodiment and the sixth embodiment is that the second adhesive layer 6 is a whole piece of gradient wedge-shaped film 7 , and the first adhesive layer 3 is a transparent PVB film sheet filled in the first gap 41 .

[0125] As shown in FIG14 , in the eleventh embodiment, the laminated glass may include: an outer glass plate 1 , a first adhesive layer 3 , a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , an inner glass plate 8 , a first shielding layer 9 and a second shielding layer 10 .

[0126] The eleventh embodiment is mainly different from the fifth embodiment in that the second adhesive layer 6 is a whole piece of gradient wedge-shaped film 7 , and the first adhesive layer 3 is a transparent PVB film sheet filled in the first gap 41 .

[0127] As shown in FIG. 15 , in the twelfth embodiment, the laminated glass may include: an outer glass plate 1 , a first adhesive layer 3 , a carrier layer 4 , a dimming element 5 , a second adhesive layer 6 , an inner glass plate 8 and a first shielding layer 9 .

[0128] The twelfth embodiment is mainly different from the tenth embodiment described above in that the first adhesive layer 3 is a PVB film with uniform thickness.

[0129] As shown in Figure 16, in the thirteenth embodiment, the laminated glass may include: an outer glass plate 1, a first adhesive layer 3, a carrier layer 4, a dimming element 5, a second adhesive layer 6, an inner glass plate 8, a first shielding layer 9 and a second shielding layer 10.

[0130] The thirteenth embodiment is mainly different from the eleventh embodiment in that the first adhesive layer 3 is a PVB film with uniform thickness.

[0131] Furthermore, in the above-mentioned embodiments, while the relative positions of the outer glass plate 1 and the inner glass plate 8 remain unchanged, the positions of the first adhesive layer 3 and the second adhesive layer 6 can be interchanged to form other embodiments.

[0132] A vehicle is also provided in an embodiment of the present disclosure. The vehicle mainly includes the above-mentioned laminated glass, and the laminated glass is used to form a panoramic windshield of the vehicle. The vehicle can achieve the technical effect achieved by the laminated glass embodiment by setting the laminated glass. For details, please refer to the specific description of the above-mentioned embodiment, and the present disclosure will not repeat it here.

[0133] It should be noted that, in the description of this disclosure, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be understood to indicate or imply relative importance. Furthermore, in the description of this disclosure, unless otherwise specified, "plurality" means two or more.

[0134] The above-mentioned various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0135] The above are only a few embodiments of the present disclosure. Although the embodiments disclosed in the present disclosure are as above, the contents are only embodiments adopted to facilitate understanding of the present disclosure and are not intended to limit the present disclosure. Any person skilled in the art of the present disclosure may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope of the present disclosure. However, the scope of patent protection of the present disclosure shall still be based on the scope defined by the appended claims.

Claims

1. A laminated glass, characterized in that: include: An outer glass plate, an inner glass plate, and an adhesive layer for bonding the outer glass plate and the inner glass plate; The laminated glass has an upper edge and a lower edge, the laminated glass includes a dimming area close to the upper edge and a visual area close to the lower edge, and a signal transmission area is provided in the visual area; The bonding layer includes a dimming element, and the dimming element is located in the dimming area; The thickness of the adhesive layer at least on a side close to the upper edge in the signal transmission area is greater than the thickness on a side close to the lower edge.

2. The laminated glass according to claim 1, characterized in that: The laminated glass further comprises a first shielding layer, which is disposed on the inner surface of the outer glass plate, and covers at least one side of the dimming element close to the lower edge of the laminated glass.

3. The laminated glass according to claim 1, characterized in that: In the extension direction from the lower edge to the upper edge, the length dimension of the laminated glass is between 1300 mm and 1900 mm.

4. The laminated glass according to claim 1, characterized in that: The dimming element includes any one of the following: a dyed liquid crystal film, an electrochromic film, a suspended particle film, and a polymer dispersed liquid crystal film.

5. The laminated glass according to claim 2, characterized in that: The bonding layer includes a coloring layer with a visible light transmittance of less than 50%, the coloring layer at least partially covers the dimming area, and the coloring layer and the dimming element are stacked.

6. The laminated glass according to claim 5, characterized in that: The adhesive layer at least includes a first adhesive layer and a second adhesive layer, and the first adhesive layer and the second adhesive layer cover two surfaces of the dimming element respectively.

7. The laminated glass according to claim 6, characterized in that: The coloring layer is located on the first adhesive layer or the second adhesive layer, and the coloring layer is a film layer with uniform color at all locations or a gradient film layer with color gradually becoming lighter from the upper edge to the lower edge.

8. The laminated glass according to claim 7, characterized in that: The coloring layer is located on the first adhesive layer, the first adhesive layer is a coloring layer, or the first adhesive layer includes a transparent film covering the visible area and a coloring layer covering the dimming area, and the transparent film and the coloring layer have the same thickness; the second adhesive layer is a transparent film.

9. The laminated glass according to claim 8, characterized in that: When the first adhesive layer includes a transparent film covering the visible area and a colored layer covering the dimming area, the first shielding layer at least covers the joint position between the transparent film and the colored layer.

10. The laminated glass according to claim 7, characterized in that: The coloring layer is located on the second adhesive layer, the first adhesive layer is a transparent film, and the second adhesive layer is a gradient film layer whose color gradually becomes lighter from the upper edge to the lower edge.

11. The laminated glass according to claim 6, characterized in that: The thickness of the second adhesive layer at least in the signal transmission area on a side close to the upper edge is greater than the thickness of the second adhesive layer on a side close to the lower edge.

12. The laminated glass according to claim 11, characterized in that: The second adhesive layer is provided with a second notch, a wedge-shaped film is provided in the second notch, and the thickness of the wedge-shaped film decreases gradually from the upper edge to the lower edge.

13. The laminated glass according to claim 12, characterized in that: The maximum thickness difference between the wedge-shaped film and the second adhesive layer is within 0.5 mm.

14. The laminated glass according to claim 12, characterized in that: The minimum height of the second notch 61 is ≥30 mm, and the minimum width of the second notch 61 is ≥30 mm.

15. The laminated glass according to claim 6, characterized in that: The adhesive layer further includes a carrier layer used as a carrier of the dimming element, and a first gap used to fill the dimming element is arranged on the carrier layer.

16. The laminated glass according to claim 15, characterized in that: The width of the first notch from the edge of the carrier layer is at least 30 mm.

17. The laminated glass according to claim 15, characterized in that: The thickness of the carrier layer is the same as the thickness of the dimming element; Alternatively, when the first adhesive layer is filled in the first gap, the sum of the thickness of the first adhesive layer and the dimming element is equal to the thickness of the carrier layer.

18. The laminated glass according to claim 1, wherein: The laminated glass further comprises a second shielding layer, which is arranged on the inner surface or the outer surface of the inner glass plate, and the second shielding layer at least covers one side of the dimming element close to the lower edge of the laminated glass.

19. The laminated glass according to claim 1, wherein: The thickness of the adhesive layer is between 0.3 mm and 2 mm.

20. A vehicle, characterized in that: The laminated glass comprises the laminated glass according to any one of claims 1 to 19.

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