Black edge display glass and black edge display system

Abstract

The invention provides black edge display glass and a black edge display system. The black edge display glass comprises a light-transmitting area and a shielding area. At least one display area is arranged in the shielding area. The black edge display glass comprises an outer glass plate, an inner glass plate, a bonding layer and a reflecting layer. The outer glass plate comprises a first surface and a second surface which are arranged oppositely, the inner glass plate comprises a third surface and a fourth surface which are arranged oppositely, and the bonding layer is connected between the second surface and the third surface. The reflecting layer is arranged between the inner glass plate and the outer glass plate and at least covers the display area. When the black-edge display glass is installed on a vehicle, the distance between the top end of the reflecting layer and the fourth surface is larger than the distance between the bottom end of the reflecting layer and the fourth surface in the thickness direction of the black-edge display glass. The black-edge display glass provided by the invention can solve the technical problems that the black-edge display image of the display area has ghosting and the display image is not clear.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a black-border display glass and a black-border display system. Background Art

[0002] With the development of vehicle intelligence, automation, and networking technologies, vehicles can provide various types of information to drivers and passengers, such as vehicle information, road information, social media information, and even entertainment information. This can generally be achieved by using glass black-edged displays, head-up display systems (HUDs), instrument panels, central control screens, co-pilot displays, and their combinations to meet multi-format, near- and far-level display needs, thereby bringing passengers a more comfortable, safe, and intelligent experience and rich information.

[0003] Among them, the black border display is generally between the car dashboard and the transparent field of view of the windshield. Compared with the traditional dashboard display, the human eye can leave the road less, which greatly improves driving safety. The prior art discloses a black border display scheme of P polarized light and a reflective layer set in the windshield, such as patent CN115250617A. However, since the black border display is close to the dashboard, the lower viewing angle corresponding to the projected image seen by the human eye is usually larger, and the incident angle of the projection light is required to be larger, resulting in a larger deviation from the Brewster angle, which will cause the P polarized light to generate more reflections on the inner surface of the windshield and form ghosting visible to the human eye, thereby affecting the clarity of the projected image. Summary of the invention

[0004] The purpose of this application is to provide a black-bordered display glass and a black-bordered display system, which can avoid ghosting of projected images and improve driving safety and visual comfort.

[0005] In a first aspect, the present application provides a black-bordered display glass, the black-bordered display glass comprising a light-transmitting area and a shielding area, the visible light transmittance of the light-transmitting area is greater than or equal to 70%, the visible light transmittance of the shielding area is less than or equal to 5%, and at least one display area is provided in the shielding area;

[0006] The black-border display glass comprises an outer glass plate, an inner glass plate, an adhesive layer and a reflective layer, the outer glass plate comprises a first surface and a second surface disposed opposite to each other, the inner glass plate comprises a third surface and a fourth surface disposed opposite to each other, and the adhesive layer is connected between the second surface and the third surface;

[0007] The reflective layer is disposed between the inner glass plate and the outer glass plate, and the reflective layer at least covers the display area;

[0008] When the black-bordered display glass is installed on a vehicle, along the thickness direction of the black-bordered display glass, the distance between the top end of the reflective layer and the fourth surface is greater than the distance between the bottom end of the reflective layer and the fourth surface.

[0009] The projection light emitted by the projection device is incident from the fourth surface to the display area of ​​the black-bordered display glass, passes through the fourth surface into the black-bordered display glass and reaches the reflective layer, is reflected by the reflective layer to form reflected light, and the reflected light is emitted from the fourth surface and enters the human eyes of the driver and passengers to form a projection image, thereby forming a projection image in the display area of ​​the black-bordered display glass.

[0010] In a possible implementation, the reflective layer has a reflective surface, the reflective surface faces the inner glass plate, and a first angle between the reflective surface and the fourth surface is greater than or equal to 0.3 mrad, or the first angle between the reflective surface and the fourth surface is greater than or equal to 0.5 mrad, or the first angle between the reflective surface and the fourth surface is greater than or equal to 0.7 mrad.

[0011] In a possible implementation manner, a top edge of the reflective layer is not located in the light-transmitting area.

[0012] In a possible implementation, the adhesive layer includes a first adhesive layer and a second adhesive layer. The reflective layer is disposed between the first adhesive layer and the second adhesive layer, the first adhesive layer is located between the reflective layer and the third surface, and the second adhesive layer is located between the reflective layer and the second surface.

[0013] In a possible implementation, when the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the first adhesive layer includes a first segment and a second segment connected in sequence, the first segment covers the display area, and the second segment at least covers the light-transmitting area; the first segment is a right wedge-shaped structure that is thick on the top and thin on the bottom, and has a first wedge angle.

[0014] In a possible implementation manner, the second section is in a positive wedge-shaped structure that is thick at the top and thin at the bottom, and has a second wedge angle, and the second wedge angle is less than or equal to the first wedge angle;

[0015] Alternatively, the second section is in an inverted wedge-shaped structure that is thin at the top and thick at the bottom, and has a second wedge angle, and the absolute value of the second wedge angle is smaller than the first wedge angle.

[0016] In a possible implementation, when the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the second adhesive layer includes a third segment and a fourth segment connected in sequence, the third segment covers the display area, and the fourth segment at least covers the light-transmitting area; the reflective layer is located between the first segment and the third segment, and the third segment has an inverted wedge-shaped structure that is thin on the top and thick on the bottom, and has a third wedge angle.

[0017] In a possible implementation manner, an absolute value of the sum of the first wedge angle and the third wedge angle is less than or equal to 0.50 mrad.

[0018] In a possible implementation manner, the fourth section is an inverted wedge-shaped structure that is thin at the top and thick at the bottom, and has a fourth wedge angle, the second section is a positive wedge-shaped structure that is thick at the top and thin at the bottom, and has a second wedge angle, and the absolute value of the fourth wedge angle is less than or equal to the second wedge angle;

[0019] Alternatively, the fourth section is a positive wedge-shaped structure that is thick on the top and thin on the bottom, and has a fourth wedge angle, and the second section is a reverse wedge-shaped structure that is thin on the top and thick on the bottom, and has a second wedge angle, and the absolute value of the second wedge angle is less than or equal to the fourth wedge angle.

[0020] In a possible implementation manner, the sum of the second wedge angle and the fourth wedge angle is less than or equal to 0.50 mrad.

[0021] In a possible implementation, the black-bordered display glass further includes a shielding layer, wherein the shielding layer is disposed between the outer glass plate and the reflective layer, the shielding layer covers the shielding area, the shielding area includes a top shielding area and a bottom shielding area, the top shielding area and the bottom shielding area are respectively located on opposite sides of the light-transmitting area, and the display area is disposed in the bottom shielding area.

[0022] In a possible implementation, the black-bordered display glass further includes a camera window area. When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the camera window area presents a positive wedge-shaped structure that is thick on the top and thin on the bottom, and the angle between the fourth surface in the camera window area and the first surface is greater than or equal to 0.05 mrad.

[0023] In a possible implementation, the light-transmitting area includes a head-up display area. When the black-bordered display glass is installed on a vehicle, the head-up display area presents a positive wedge-shaped structure that is thick on the top and thin on the bottom along the height direction of the black-bordered display glass. The angle between the fourth surface in the head-up display area and the first surface is smaller than the first angle between the reflective surface and the fourth surface.

[0024] In a possible implementation, when the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the light-transmitting area presents a right wedge-shaped structure that is thick on the top and thin on the bottom, and the angle between the fourth surface in the light-transmitting area and the first surface is smaller than the first angle between the reflective surface and the fourth surface.

[0025] In a possible implementation, when the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the inner glass plate presents a positive wedge-shaped structure that is thick at the top and thin at the bottom, and a wedge angle of the inner glass plate is less than or equal to the first angle between the reflective surface and the fourth surface.

[0026] In a possible implementation manner, when the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the outer glass plate presents an inverted wedge-shaped structure that is thin at the top and thick at the bottom.

[0027] In a possible implementation manner, the black-bordered display glass further includes a heat insulation layer, and the heat insulation layer is disposed on the second surface, or on the third surface, or in the adhesive layer; the heat insulation layer at least covers the light-transmitting area.

[0028] In a possible implementation, the black-bordered display glass further includes a heating layer and at least two bus bars, the bus bars are electrically connected to the heating layer, the heating layer is disposed on the second surface, or on the third surface, or in the adhesive layer; the heating layer at least covers the light-transmitting area.

[0029] In a possible implementation, the second adhesive layer includes at least one outer sublayer and at least one sound insulation sublayer, the hardness of the sound insulation sublayer is less than the hardness of the outer sublayer, and the sound insulation sublayer is located between one of the outer sublayers and the first adhesive layer.

[0030] In a second aspect, the present application provides a black-bordered display system. The black-bordered display system comprises a projection device and the black-bordered display glass, wherein the projection device is disposed on a side of the black-bordered display glass close to the fourth surface; the projection device is used to emit projection light, wherein the projection light comprises at least 80% of P-polarized light, and the reflective layer is used to reflect the projection light to form a projection image.

[0031] By using the shielding layer as the display background of the projected image, the present application can better block the external ambient light, avoid unnecessary interference of the line of sight, and can also improve the contrast between the projected image and the display background, making the image display clearer. At the same time, by setting the distance between the top of the reflective layer and the fourth surface to be greater than the distance between the bottom of the reflective layer and the fourth surface, the present application can reduce the deviation angle of the secondary image between the reflected secondary image and the projected image, thereby making the reflected secondary image and the projected image close to or even overlapping each other, reducing or even eliminating the visual reflection ghosting of the projected image, and improving the clarity of the projected image. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of the vehicle provided for this application;

[0033] Figure 2 A schematic diagram of the structure of the black border display system provided by this application;

[0034] Figure 3 A schematic diagram of a structure of a black-bordered display glass observed from inside a vehicle provided in this application;

[0035] Figure 4 Another structural schematic diagram of the black-bordered display glass observed from inside the vehicle provided in this application;

[0036] Figure 5 for Figure 2 The black border shown shows a schematic diagram of the exploded structure of the glass;

[0037] Figure 6 A schematic diagram of the structure of the wedge-shaped structure provided for this application;

[0038] Figure 7 A wedge angle variation curve of the first embodiment of the black-border display glass provided in the present application;

[0039] Figure 8 A wedge angle variation curve of the second embodiment of the black-border display glass provided in the present application;

[0040] Fig. 9 The wedge angle variation curve of the third embodiment of the black-border display glass provided in the present application;

[0041] Fig.10 The wedge angle variation curve of the fourth embodiment of the black-border display glass provided in the present application;

[0042] Fig.11 A schematic cross-sectional view of a black-edged display glass having a wedge-shaped structure in the camera window area provided in the present application;

[0043] Fig.12 The wedge angle variation curve of the fifth embodiment of the black-border display glass provided in the present application;

[0044] Fig.13 The wedge angle variation curve of the sixth embodiment of the black-border display glass provided in the present application;

[0045] Fig.14 A schematic cross-sectional view of a black-bordered display glass with a head-up display area viewed from inside a vehicle provided in the present application;

[0046] Fig.15 The wedge angle variation curve of the seventh embodiment of the black-border display glass provided in the present application;

[0047] Fig.16 A schematic diagram of the cross-sectional structure of the black-edge display glass with an inner glass plate in a positive wedge-shaped structure provided by the present application;

[0048] Fig.17 A schematic cross-sectional structure diagram of a black-edge display glass having an outer glass plate in an inverted wedge-shaped structure provided by the present application;

[0049] Fig.18 A schematic cross-sectional structure diagram of a black-edged display glass with a heat-insulating layer provided in the present application;

[0050] Fig.19 A schematic cross-sectional structure diagram of a black-edged display glass with an electric heating element provided in the present application.

[0051] Reference numerals: vehicle 300, vehicle body 210; black border display system 200; black border display glass 100; projection device 110; light transmission area 101; shielding area 102; bottom shielding area 1021; top shielding area 1022; left shielding area 1023; right shielding area 1024; display area 103; non-display area 104; camera window area 105; head-up display area 1011; field of view transparent area 1012; outer glass plate 10; second surface 11; first surface 12; reflection layer 30; reflection surface 31; back surface 32; inner glass plate 20; fourth surface 21; third surface 22; adhesive layer 1; first adhesive layer 40; second adhesive layer 50; first adhesive surface 41; second adhesive surface 42; first section 43; second section 44; first wedge angle δ 1p ; Second wedge angle δ 2a ; third bonding surface 51; fourth bonding surface 52; third section 53; fourth section 54; third wedge angle δ 2p ; Fourth wedge angle δ 2b ; Shielding layer 60; First auxiliary shielding layer 81; Second auxiliary shielding layer 82; Heat insulation layer 80; Electric heating element 70; Heating layer 71; Busbar 72; First busbar 721; Second busbar 722. DETAILED DESCRIPTION

[0052] The technical solution in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0053] In this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. And "multiple" in this application refers to two or more.

[0054] The present application provides a means of transportation. The means of transportation include but are not limited to vehicles, airplanes, trains, subways, light rails, etc. The following description is based on the transportation means being a vehicle.

[0055] See also Figure 1 and Figure 2 , an embodiment of the present application provides a vehicle 300. The vehicle 300 includes a vehicle body 210 and a black-bordered display system 200. The black-bordered display system 200 includes a black-bordered display glass 100 and a projection device 110. The black-bordered display glass 100 is installed at the opening of the vehicle body 210, and divides the vehicle 300 into the exterior of the vehicle 300 and the interior of the vehicle 300. The projection device 110 is installed inside the vehicle 300, and the projection device 110 is used to emit projection light, and the projection light is incident on the black-bordered display glass 100, and the black-bordered display glass 100 reflects the projection light into the human eyes of the driver and passenger to form a projection image, so that the driver and passenger can observe the projection image without having to lower their heads significantly, so that the human eyes of the driver and passenger can leave the road less, keep more attention on the road or nearby, which is conducive to observing the real-time situation outside the vehicle 300, and can more easily obtain the necessary information for auxiliary driving such as driving information and entertainment information, thereby greatly improving driving safety. The image displayed by the black-bordered display glass 100 provided in this embodiment can partially replace or even completely replace the traditional instrument panel, or even eliminate the traditional instrument panel.

[0056] The projection light may include at least 80% of P-polarized light. The higher the proportion of P-polarized light in the projection light, the more conducive it is to meeting the use needs of drivers wearing sunglasses and the easier it is to eliminate the visual reflection ghosting phenomenon of the displayed image. Exemplarily, the projection light includes at least 85% of P-polarized light, or the projection light includes at least 90% of P-polarized light, or the projection light includes at least 95% of P-polarized light, or even the projection light is 100% of P-polarized light, that is, the projection light is substantially pure P-polarized light.

[0057] In this embodiment, the vehicle 300 is a sedan. In other embodiments, the vehicle 300 may also be a multi-purpose vehicle (MPV), a sport / suburban utility vehicle (SUV), an off-road vehicle (ORV), a pickup truck, a van, a bus, a truck, etc. The black-bordered display glass 100 may be used as a front windshield, a rear windshield, a side window glass, or a corner window glass of the vehicle 300. The following description is made by taking the black-bordered display glass 100 as a front windshield as an example.

[0058] For ease of description, in this application, the width direction of the black-bordered display glass 100 is defined as the X direction, the height direction is defined as the Y direction, and the thickness direction is defined as the Z direction. The X direction, the Y direction, and the Z direction are mutually perpendicular. It can be understood that the X direction is parallel or approximately parallel to the width direction of the vehicle 300, the positive direction of the Y axis is toward the roof, and the negative direction of the Y axis is toward the bottom of the vehicle.

[0059] It should be noted that the directional terms such as "top", "bottom", "left" and "right" mentioned in the description of this application are based on the Figure 3 The black border is shown in the figure to describe the orientation of the glass 100. The orientation toward the positive direction of the Y axis is "top", the orientation toward the negative direction of the Y axis is "bottom", the orientation toward the negative direction of the X axis is "left", and the orientation toward the positive direction of the X axis is "right".

[0060] See also Figure 3 and Figure 4 , the black-bordered display glass 100 has a light-transmitting area 101 and a shielding area 102. The shielding area 102 is arranged around the periphery of the light-transmitting area 101. The visible light transmittance of the light-transmitting area 101 is greater than or equal to 70%, so that the occupants of the vehicle can observe the environment outside the vehicle through the light-transmitting area 101. The visible light transmittance of the shielding area 102 is less than or equal to 5%, so as to facilitate shielding, protection and improving the overall aesthetics. Preferably, the visible light transmittance of the shielding area 102 is less than or equal to 3%, more preferably less than or equal to 1%, further less than or equal to 0.5%, or even almost equal to 0, that is, it is opaque.

[0061] The shielding area 102 includes a bottom shielding area 1021, a top shielding area 1022, a left shielding area 1023 and a right shielding area 1024. The top shielding area 1022 and the bottom shielding area 1021 are respectively located at two opposite sides of the light-transmitting area 101, and the bottom shielding area 1021 is located below the light-transmitting area 101, that is, located at the negative side of the Y axis of the light-transmitting area 101. The top shielding area 1022 is located above the light-transmitting area 101, that is, located at the positive side of the Y axis of the light-transmitting area 101. The left shielding area 1023 and the right shielding area 1024 are also respectively located at two opposite sides of the light-transmitting area 101, and the left shielding area 1023 is located on the left side of the light-transmitting area 101, that is, located at the negative side of the X axis of the light-transmitting area 101. The right shielding area 1024 is located on the right side of the light-transmitting area 101, that is, located at the positive side of the X axis of the light-transmitting area 101. The bottom shielding area 1021 , the left shielding area 1023 , the top shielding area 1022 and the right shielding area 1024 are connected end to end, surround the outer periphery of the light-transmitting area 101 , and form the shielding area 102 .

[0062] Please continue reading Figure 3 , the shielding area 102 includes a display area 103 and a non-display area 104. The projection light emitted by the projection device 110 is emitted to the display area 103, thereby forming a projection image in the display area 103. The projection image can be driving information, patterns, text or video of the vehicle 300. The displayed information can be used in various scenes such as welcoming guests, creating an atmosphere, watching movies and working. Specifically, the projected image is used to display driving parameters, including vehicle speed, engine speed, fuel consumption, tire pressure, warning information, mileage, etc. It can also be used to display weather temperature, entertainment information, and can be used for dynamic navigation, night vision, real-life maps, etc.

[0063] like Figure 3 As shown, there is one display area 103, and it is located in the bottom shielding area 1021. That is, the display area 103 is located between the light-transmitting area 101 and the instrument panel. In other embodiments, the display area 103 can also be located in the top shielding area 1022, or in the left shielding area 1023, or in the right shielding area 1024.

[0064] like Figure 4As shown, there are multiple display areas 103. Multiple display areas 103 are arranged at intervals in the bottom shielding area 1021. Exemplarily, there are eight display areas 103. The eight display areas 103 are all located in the bottom shielding area 1021 and are arranged at intervals along the X direction. In other embodiments, there may be two, three or more display areas 103. The specific amount of display areas 103 can be designed according to actual needs. The display area 103 can be located in any two or three shielding areas 102 of the bottom shielding area 1021, the top shielding area 1022, the left shielding area 1023 and the right shielding area 1024, or the bottom shielding area 1021, the top shielding area 1022, the left shielding area 1023 and the right shielding area 1024 are all provided with display areas 103. Exemplarily, there are two display areas 103 , one of which is located in the bottom shielding area 1021 and is close to the instrument panel; the other display area 103 is located in the top shielding area 1022 and is close to the rearview mirror inside the vehicle.

[0065] The display area 103 may only cover a portion of the bottom shielding area 1021 , or may cover the entire bottom shielding area 1021 , so as to form a through-type panoramic display effect from A-pillar to A-pillar.

[0066] It should be noted that in the present application, the shape of the display area 103 and the number of the display areas 103 can be set according to the actual application requirements of the vehicle 300, and are not limited to the following. Figure 3 and Figure 4 The shape and number of display areas 103 are shown.

[0067] Please also read Figure 2 and Figure 5 The black-bordered display glass 100 is a laminated glass. The black-bordered display glass 100 comprises an outer glass plate 10, an inner glass plate 20, an adhesive layer 1 and a reflective layer 30. Along the thickness direction of the black-bordered display glass 100, the outer glass plate 10, the adhesive layer 1, the reflective layer 30 and the inner glass plate 20 are stacked, and the adhesive layer 1 and the reflective layer 30 are both located between the outer glass plate 10 and the inner glass plate 20.

[0068] When the black-bordered display glass 100 is installed on the vehicle body 210, the outer glass plate 10 faces the outside of the vehicle 300, and the inner glass plate 20 faces the inside of the vehicle 300. The inner glass plate 20 includes a fourth surface 21 and a third surface 22. The fourth surface 21 and the third surface 22 are arranged opposite to each other along the thickness direction of the inner glass plate 20. The third surface 22 of the inner glass plate 20 faces the adhesive layer 1 and is bonded and fixed to the adhesive layer 1. When the black-bordered display glass 100 is installed on the vehicle body 210, the fourth surface 21 of the inner glass plate 20 faces the inside of the vehicle 300, serving as the inner surface of the black-bordered display glass 100.

[0069] The outer glass plate 10 includes a second surface 11 and a first surface 12. The second surface 11 and the first surface 12 are arranged opposite to each other along the thickness direction of the outer glass plate 10. The second surface 11 of the outer glass plate 10 faces the adhesive layer 1 and is bonded and fixed to the adhesive layer 1. When the black-bordered display glass 100 is installed on the vehicle body 210, the first surface 12 of the outer glass plate 10 faces the outside of the vehicle 300 and serves as the outer surface of the black-bordered display glass 100.

[0070] The reflective layer 30 includes a reflective surface 31 and a back surface 32. The reflective surface 31 and the back surface 32 are arranged opposite to each other along the thickness direction of the reflective layer 30. The reflective layer 30 is stacked between the inner glass plate 20 and the outer glass plate 10, and the reflective surface 31 faces the inner glass plate 20. The reflective layer 30 is located in the shielding area 102 of the black-bordered display glass 100 and covers the display area 103. The area of ​​the reflective layer 30 is greater than or equal to the area of ​​the display area 103. That is, the orthographic projection of the reflective layer 30 along the thickness direction of the black-bordered display glass 100 completely covers the display area 103.

[0071] The reflective layer 30 is located outside the field of view B deduction area of ​​the black-bordered display glass 100. Furthermore, the reflective layer 30 is spaced apart from the light-transmitting area 101, that is, the light-transmitting area 101 is located outside the light-transmitting area 101 and does not enter the light-transmitting area 101, so as to avoid the boundary of the reflective layer 30 from causing adverse effects on the appearance, thereby avoiding affecting the field of view of the driver and passengers.

[0072] When the black-bordered display glass 100 is installed on the vehicle 300 , the reflective layer 30 has a top end and a bottom end along the height direction of the black-bordered display glass 100 . The projection light is incident on the display area 103, and the fourth surface 21 produces a certain reflection on the projection light to form a reflected secondary image. The projection light passing through the fourth surface 21 is incident on the reflective surface 31 of the reflective layer 30, and the reflective surface 31 reflects the projection light and then passes through the fourth surface 21 to form a projected image. In order to weaken the reflected secondary image or even eliminate the reflected secondary image, the present application arranges that when the black-bordered display glass 100 is installed on the vehicle 300, along the thickness direction of the black-bordered display glass 100, the distance between the top end of the reflective layer 30 and the fourth surface 21 is greater than the distance between the bottom end of the reflective layer 30 and the fourth surface 21, even if the first angle δ1 between the reflective surface 31 and the fourth surface 21 is an acute angle, thereby reducing the secondary image deviation angle between the reflected secondary image and the projected image, and then making the reflected secondary image and the projected image close to or even overlapping each other, thereby weakening or even eliminating the visual reflection ghosting of the projected image, and improving the clarity of the projected image.

[0073] Among them, since the display area 103 is close to the instrument panel, the downward viewing angle corresponding to the projected image seen by the human eye is usually large, and the incident angle of the projection light can be 45° to 75°, or even 65° to 75°. The first angle δ1 is greater than or equal to 0.3mrad. Exemplarily, the first angle δ1 can be 0.3mrad, 0.4mrad, 0.5mrad, 0.6mrad, 0.7mrad, 0.75mrad, 0.8mrad, 0.9mrad, 1.0mrad, 1.1mrad, 1.2mrad, 1.3mrad, 1.4mrad or 1.5mrad, etc. Alternatively, the first angle δ1 is greater than or equal to 0.5mrad. Alternatively, the first angle δ1 can also be greater than or equal to 0.7mrad. Alternatively, the first angle δ1 can also be greater than or equal to 0.9mrad. Alternatively, the first angle δ1 can also be greater than or equal to 1.0mrad. Alternatively, the first angle δ1 can also be greater than or equal to 1.1mrad. Alternatively, the first angle δ1 may also be greater than or equal to 1.2 mrad. In this embodiment, by setting the first angle δ1 to be greater than or equal to 0.5 mrad, the deviation angle of the secondary image between the reflected secondary image and the projected image can be effectively reduced, thereby making the reflected secondary image and the projected image close to or even overlapping each other, which can improve the clarity of the projected image. In the actual design process, considering the design cost and design difficulty, the first angle δ1 is less than or equal to 2.0 mrad, and further less than or equal to 1.8 mrad.

[0074] Among them, the inner glass plate 20 is transparent glass or tinted glass. The outer glass plate 10 is transparent glass or tinted glass. The total iron content (in terms of Fe2O3) of the transparent glass is less than or equal to 0.1%, even less than or equal to 0.05%, and further less than or equal to 0.01%. The visible light transmittance of the transparent glass is 80% to 95%. The total iron content (in terms of Fe2O3) of the tinted glass is 0.1% to 0.8%, preferably 0.1% to 0.5%. The visible light transmittance of the tinted glass is 80% to 90%. In some embodiments, the inner glass plate 20 is transparent glass, which is conducive to allowing more projection light to be incident on the reflective layer 30, thereby improving the brightness of the projected image; the outer glass plate 10 is tinted glass, which is conducive to improving the heat insulation effect of the black-bordered display glass 100.

[0075] The thickness of the inner glass plate 20 is less than or equal to 1.8 mm. Preferably, the thickness of the inner glass plate 20 is less than or equal to 1.6 mm, or less than or equal to 1.4 mm, or less than or equal to 1.2 mm, less than or equal to 1.0 mm, or less than or equal to 0.7 mm.

[0076] It should be noted that the distance between the reflective surface 31 and the fourth surface 21 will affect the deviation angle of the secondary image between the reflected secondary image and the projected image. The greater the distance between the reflective surface 31 and the fourth surface 21, the greater the deviation angle of the secondary image between the reflected secondary image and the projected image, the more obvious the ghosting, and the worse the clarity of the projected image. At this time, the first angle δ1 between the reflective layer 30 and the fourth surface 21 needs to be set to be larger to reduce or eliminate the visual reflection ghosting.

[0077] In this embodiment, by setting the thickness of the inner glass plate 20 to be less than or equal to 1.8 mm, the distance between the reflective surface 31 and the fourth surface 21 can be reduced, thereby reducing the first angle δ1 between the reflective surface 31 and the fourth surface 21, thereby reducing the difficulty of manufacturing the black-bordered display glass 100.

[0078] Among them, the reflective layer 30 is a laminated polymer film, and the thickness of the laminated polymer film is preferably 20μm to 500μm, specifically 20μm, 50μm, 80μm, 100μm, 120μm, 150μm, 180μm, 200μm, 250μm, 300μm, 350μm, 400μm, 450μm, 500μm, etc., more preferably 50μm to 300μm. The laminated polymer film is composed of dozens, hundreds or even thousands of layers of two resin films with different refractive indices alternately laminated together, and the material of the resin film can be at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), syndiotactic polystyrene (sPS), polybutylene terephthalate (PBT), polycyclohexane dimethyl terephthalate (PCT), polyetherimide (PEI) and polymethacrylimide (PMI). The laminated polymer film can be obtained on the market, for example, from 3M Company, Toray Industries, Ltd., Sekisui Chemical Industry Co., Ltd., and Eastman Chemical Company.

[0079] The reflective layer 30 is an ultra-thin substrate with a high-low refractive index stack or a metal stack, and the thickness of the ultra-thin substrate is 20 μm to 300 μm, and specifically 20 μm, 50 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 250 μm, 300 μm, etc. The material of the ultra-thin substrate is soda-lime glass, high-aluminum glass, lithium-aluminum glass, borosilicate glass, polyethylene terephthalate, or polycarbonate. The high-low refractive index stack or the metal stack is arranged on the surface of the ultra-thin substrate by a magnetron sputtering process. The high-low refractive index stack includes at least one stacked structure, each stacked structure includes a high refractive index layer and a low refractive index layer stacked in sequence, the refractive index of the high refractive index layer is greater than or equal to 1.9, the refractive index of the low refractive index layer is less than 1.8, the physical thickness of the high-low refractive index stack is 100nm to 800nm, and the high-low refractive index stack can be exemplified by the transparent nanofilm in CN104267498A. The metal stack includes at least two dielectric layers and at least one metal layer, each metal layer is located between two adjacent dielectric layers, the physical thickness of the metal stack is 100nm to 500nm, and the metal stack can be exemplified by the transparent nanofilm in CN104267499A.

[0080] When the reflective layer 30 is disposed between the inner glass plate 20 and the outer glass plate 10, and when the projection light is incident on the display area 103 at an incident angle of 70°, the display area 103 has a reflectivity greater than or equal to 15% for the P polarized light incident at an incident angle of 70°, thereby enhancing the brightness of the black border display, improving the energy utilization rate of the projection device 110, and further reducing the energy consumption of the projection device 110, which is beneficial to the miniaturization and heat dissipation design of the projection device 110. Preferably, the display area 103 has a reflectivity greater than or equal to 20% for the P polarized light incident at an incident angle of 70°; or, the display area 103 has a reflectivity greater than or equal to 30% for the P polarized light incident at an incident angle of 70°; or, the display area 103 has a reflectivity greater than or equal to 40% for the P polarized light incident at an incident angle of 70°.

[0081] When the projection light is incident on the display area 103 at an incident angle of 70°, the ratio K of the reflectivity of the display area 103 to the S polarized light and the reflectivity to the P polarized light is ≤2, which can reduce the interference of the stray light in the vehicle on the projected image, thereby further improving the clarity of the projected image. Preferably, the ratio K can also be ≤1.5, or ≤1.0, or ≤0.8, or ≤0.6.

[0082] In this embodiment, the top of the reflective layer 30 is not located in the light-transmitting area 101, so as to avoid interfering with the vision of the driver and passengers. In some embodiments, the top of the reflective layer 30 is only located in the bottom shielding area 1021, that is, the reflective layer 30 only covers the display area 103 in the bottom shielding area 1021 and at most covers the entire bottom shielding area 1021, and the reflective layer 30 is spaced apart from the light-transmitting area 101, and along the thickness direction of the black-bordered display glass 100, the orthographic projection of the reflective layer 30 is staggered with the light-transmitting area 101, and there is no overlapping part; specifically, the distance between the top of the reflective layer 30 and the light-transmitting area 101 is at least 1 mm; preferably, the distance between the reflective layer 30 and the light-transmitting area 101 is at least 5 mm, or at least 10 mm, or at least 20 mm.

[0083] In other embodiments, the top of the reflective layer 30 is located in the top shielding area 1022 , that is, the reflective layer 30 covers both the bottom shielding area 1021 and the light-transmitting area 101 , and the top of the reflective layer 30 extends into the top shielding area 1022 .

[0084] It should be noted that, since the reflective layer 30 has a certain thickness, when the reflective layer 30 is sandwiched between the inner glass plate 20 and the outer glass plate 10, a height difference is formed at the boundary of the reflective layer 30, which will cause optical distortion at the boundary, thereby interfering with the field of vision of the driver and passengers. In this embodiment, by setting the top of the reflective layer 30 not to be located in the light-transmitting area 101, the optically poor area can be hidden in the bottom shielding area 1021 or in the top shielding area 1022, thereby avoiding interference with the field of vision of the driver and passengers.

[0085] Please continue reading Figure 2 and Figure 5 In this embodiment, the reflective layer 30 is disposed in the adhesive layer 1. The adhesive layer 1 includes a plurality of sub-adhesive layers, and the reflective layer 30 is disposed between any two adjacent sub-adhesive layers. In this embodiment, the adhesive layer 1 includes two sub-adhesive layers. The two sub-adhesive layers are respectively a first adhesive layer 40 and a second adhesive layer 50, and the first adhesive layer 40 and the second adhesive layer 50 are stacked along the thickness direction of the black-bordered display glass 100. The reflective layer 30 is disposed between the first adhesive layer 40 and the second adhesive layer 50, the first adhesive layer 40 is located between the reflective layer 30 and the third surface 22, and the second adhesive layer 50 is located between the reflective layer 30 and the second surface 11. In this embodiment, the reflective layer 30 is bonded and fixed by the first adhesive layer 40 and the second adhesive layer 50, so that the position of the reflective layer 30 can be prevented from moving.

[0086] The first adhesive layer 40 includes a first adhesive surface 41 and a second adhesive surface 42. The first adhesive surface 41 and the second adhesive surface 42 are arranged opposite to each other along the thickness direction of the first adhesive layer 40. When the black-bordered display glass 100 is installed in a vehicle, along the height direction of the black-bordered display glass 100, the first adhesive layer 40 includes a first section 43 and a second section 44 connected in sequence. The second adhesive surface 42 of the first adhesive layer 40 is bonded and fixed to the third surface 22 of the inner glass plate 20. The first section 43 covers at least the display area 103, and the second section 44 covers at least the light-transmitting area 101.

[0087] When the black-bordered display glass 100 is installed in the vehicle 300, along the height direction of the black-bordered display glass 100, the first section 43 is a positive wedge-shaped structure with a thick top and a thin bottom. The first section 43 has a first wedge angle δ at least in the display area 103. 1p , that is, the first segment 43 may have a first wedge angle δ only in the display area 103 1p The other regions are not limited, and the first segment 43 as a whole may have a first wedge angle δ 1p The first wedge angle δ 1p Greater than 0. In this embodiment, the first wedge angle δ 1p Greater than or equal to 0.5 mrad. Exemplarily, the first wedge angle δ 1p It can be 0.5mrad, 0.6mrad, 0.7mrad, 0.75mrad, 0.9mrad, 0.8mrad, 1.0mrad, 1.1mrad, 1.2mrad, 1.3mrad, 1.4mrad or 1.5mrad, etc.

[0088] like Figure 6 As shown, T1 is the bottom size of the wedge structure, T2 is the top size of the wedge structure, H is the distance from the bottom to the top of the wedge structure, and δ is the wedge angle of the wedge structure. The wedge angle δ of the wedge structure = arctan ((T2-T1) / H). The wedge angle reflects the thickness change gradient of the wedge structure. When δ is a positive value, the thickness of the wedge structure increases from the bottom to the top of the wedge structure. On the contrary, when δ is a negative value, the thickness of the wedge sheet decreases from the bottom to the top of the wedge structure.

[0089] In this embodiment, the first wedge angle δ 1p Since the height range of the display area 103 (i.e., along the Y direction) is usually short, such as 50 mm to 300 mm, the present application sets the first wedge angle δ 1p Setting it to a constant value can reduce the difficulty of making the first adhesive layer 40 and ensure that the first wedge angle δ 1p The accuracy of the first wedge angle δ 1pIn other embodiments, along the positive direction of the Y axis, the first wedge angle δ 1p It can also be continuously changed, for example, gradually increasing, or gradually decreasing, or first increasing and then decreasing, or first decreasing and then increasing, etc. This application does not apply to the wedge angle δ 1p specific restrictions on the changing trends.

[0090] In some embodiments, when the black-bordered display glass 100 is installed in the vehicle 300, along the height direction of the black-bordered display glass 100, the second section 44 is a positive wedge-shaped structure with a thick top and a thin bottom, and has a second wedge angle δ 2a The second wedge angle δ 2a Greater than or equal to 0. Second wedge angle δ 2a Less than or equal to the first wedge angle δ 1p Among them, the second wedge angle δ 2a Can be equal to the first wedge angle δ 1p , which is beneficial to the production of the first adhesive layer 40. Alternatively, the second wedge angle δ 2a Can be smaller than the first wedge angle δ 1p , which is beneficial to controlling the overall thickness of the black-bordered display glass 100. Alternatively, along the positive direction of the Y axis, the second wedge angle δ 2a That is, along the positive direction of the Y axis, the increase in the thickness of the second segment 44 gradually decreases, thereby preventing the thickness of the first adhesive layer 40 located in the light-transmitting area 101 from being too large. 2a Continuously decreases, and the second wedge angle δ 2a The rate of change of |ROC| is ≤0.3mrad / 100mm, so as to reduce the manufacturing difficulty of the first adhesive layer 40 and reduce the production cost. Preferably, the second wedge angle δ 2a The rate of change of |ROC|≤0.2mrad / 100mm. More preferably, the second wedge angle δ 2a The rate of change of the wedge angle |ROC|≤0.1mrad / 100mm. The wedge angle change rate ROC (rate of change) is the ratio of the difference between the wedge angles at any two positions to the distance between the two positions. A positive ROC value indicates an increase in the wedge angle, a negative ROC value indicates a decrease in the wedge angle, and a ROC value of 0 indicates that the wedge angle remains unchanged, that is, the wedge angle is a constant value.

[0091] In one embodiment, the second section 44 may also be in an inverted wedge-shaped structure with a thin top and a thick bottom, and has a second wedge angle δ 2a , the second wedge angle δ 2a The absolute value of the first wedge angle δ is less than or equal to 1p The second wedge angle δ of the second section 44 of the reverse wedge structure 2a The second wedge angle δ of the second segment 44 of the above-mentioned positive wedge structure can be set.2a The settings are not described again in this application.

[0092] In this embodiment, the thickness of the inner glass plate 20 is uniform, that is, the fourth surface 21 is arranged parallel to the third surface 22, and the cross-sectional shape of the inner glass plate 20 is a rectangular structure. It can be understood that the first angle δ1 between the reflective layer 30 and the fourth surface 21 is entirely provided by the first adhesive layer 40, that is, the first angle δ1 is equal to the first wedge angle δ 1p .

[0093] The second adhesive layer 50 includes a third adhesive surface 51 and a fourth adhesive surface 52. The third adhesive surface 51 and the fourth adhesive surface 52 are arranged opposite to each other along the thickness direction of the second adhesive layer 50. When the black-bordered display glass 100 is installed on a vehicle, along the height direction of the black-bordered display glass 100, the second adhesive layer 50 includes a third section 53 and a fourth section 54 connected in sequence. The second adhesive layer 50 is arranged between the outer glass plate 10 and the reflective layer 30, and the fourth adhesive surface 52 is bonded and fixed to the second surface 11 of the outer glass plate 10. The third section 53 at least covers the display area 103, and the fourth section 54 at least covers the light-transmitting area 101.

[0094] In some embodiments, the reflective layer 30 is only disposed in the bottom shielding area 1021, and the area of ​​the reflective layer 30 is smaller than the area of ​​the first adhesive layer 40 or the second adhesive layer 50; in the display area 103, the reflective surface 31 of the reflective layer 30 is bonded and fixed to the first adhesive surface 41, and the back surface 32 of the reflective layer 30 is bonded and fixed to the third adhesive surface 51; in the light-transmitting area 101, the third adhesive surface 51 is bonded and fixed to the first adhesive surface 41.

[0095] In other embodiments, the reflective layer 30 is only disposed in the bottom shielding area 1021, the area of ​​the reflective layer 30 is smaller than the area of ​​the first adhesive layer 40 or the second adhesive layer 50, an auxiliary adhesive layer (not shown) is added between the first adhesive layer 40 and the second adhesive layer 50, the sum of the area of ​​the reflective layer 30 and the area of ​​the auxiliary adhesive layer is equal to the area of ​​the first adhesive layer 40 or the second adhesive layer 50, and the thickness of the reflective layer 30 is equal to the thickness of the auxiliary adhesive layer; in the display area 103, the reflective surface 31 of the reflective layer 30 is bonded and fixed to the first adhesive surface 41, and the back surface 32 of the reflective layer 30 is bonded and fixed to the third adhesive surface 51; in the light-transmitting area 101, the two surfaces of the auxiliary adhesive layer are respectively bonded and fixed to the third adhesive surface 51 and the first adhesive surface 41.

[0096] In some other embodiments, the area of ​​the reflective layer 30 is equal to the area of ​​the first adhesive layer 40 or the second adhesive layer 50. In this case, no matter in the display area 103 or in the light-transmitting area 101, the first adhesive surface 41 is only bonded and fixed to the reflective surface 31 of the reflective layer 30, and the third adhesive surface 51 is only bonded and fixed to the back surface 32 of the reflective layer 30.

[0097] like Figure 5 As shown, when the black-bordered display glass 100 is installed on the vehicle 300, along the height direction of the black-bordered display glass 100, the reflective layer 30 is located between the first section 43 and the third section 53, and the third section 53 is an inverted wedge-shaped structure with a thin top and a thick bottom, and has a third wedge angle δ 2p By using the third section 53 of the reverse wedge structure and the first section 43 of the positive wedge structure to offset each other, the total wedge angle of the display area 103 can be reduced, which is beneficial to controlling the total thickness of the display area 103 and facilitating the production of the black-border display glass 100. Specifically, the first wedge angle δ of the first section 43 is 1p The third wedge angle δ of the third segment 53 2p The absolute value of the sum of is less than or equal to 0.50 mrad. Further, the first wedge angle δ 1p With the third wedge angle δ 2p The absolute value of the sum is less than or equal to 0.40 mrad; or, the first wedge angle δ 1p With the third wedge angle δ 2p The absolute value of the sum is less than or equal to 0.30 mrad; or, the first wedge angle δ 1p With the third wedge angle δ 2p The absolute value of the sum is less than or equal to 0.20 mrad; or the first wedge angle δ 1p With the third wedge angle δ 2p The absolute value of the sum is less than or equal to 0.10 mrad; or, the first wedge angle δ 1p With the third wedge angle δ 2p The absolute value of the sum is equal to 0, that is, the first wedge angle δ 1p Equal to the third wedge angle δ 2p Preferably, the first wedge angle δ 1p Greater than the third wedge angle δ 2p The absolute value of the third wedge angle δ makes the display area 103 present a positive wedge structure, which is beneficial to the production of the black-border display glass 100. 2p The setting of the first wedge angle δ can refer to the above 1p The settings are not described again in this application.

[0098] In some embodiments, the fourth section 54 is in an inverted wedge-shaped structure with a thin top and a thick bottom, and has a fourth wedge angle δ 2b The second section 44 is a positive wedge-shaped structure with a thick upper portion and a thin lower portion, and has a second wedge angle δ 2a , the fourth wedge angle δ 2b The absolute value of the second wedge angle δ is less than or equal to 2a In other embodiments, the fourth section 54 is a positive wedge-shaped structure with a thick top and a thin bottom, and has a fourth wedge angle δ 2bThe second section 44 is an inverted wedge-shaped structure with a thin top and a thick bottom, and has a second wedge angle δ 2a , the second wedge angle δ 2a The absolute value of the fourth wedge angle δ is less than or equal to 2b The second segment 44 and the fourth segment 54 of the opposite structure cooperate with each other to offset each other, so as to reduce the total wedge angle of the light-transmitting area 101, which is beneficial to control the total thickness of the light-transmitting area 101 and to facilitate the production of the black-border display glass 100. Specifically, the second wedge angle δ of the second segment 44 is 2a The fourth wedge angle δ of the fourth segment 54 2b The sum is less than or equal to 0.50 mrad and greater than or equal to 0, that is, the light-transmitting area 101 is in a rectangular structure or a positive wedge structure, which is conducive to reducing or even eliminating the transmission ghosting of the light-transmitting area 101 and is conducive to the production of the black-bordered display glass 100, and even realizing W-HUD or AR-HUD in the light-transmitting area 101. The projection distance of W-HUD is 2 meters to 5 meters, and the projection distance of AR-HUD is greater than 5 meters. Further, the second wedge angle δ of the second segment 44 is 2a The fourth wedge angle δ of the fourth segment 54 2b The sum is less than or equal to 0.40 mrad; or, the second wedge angle δ of the second segment 44 2a The fourth wedge angle δ of the fourth segment 54 2b The sum is less than or equal to 0.30 mrad; or, the second wedge angle δ of the second segment 44 2a The fourth wedge angle δ of the fourth segment 54 2b The sum is less than or equal to 0.20 mrad; or, the second wedge angle δ of the second segment 44 2a The fourth wedge angle δ of the fourth segment 54 2b The sum is less than or equal to 0.10 mrad; or, the second wedge angle δ of the second segment 44 2a The fourth wedge angle δ of the fourth segment 54 2b The sum is equal to 0, that is, the light-transmitting area 101 has a rectangular structure.

[0099] Among them, the fourth wedge angle δ 2b The absolute value of the third wedge angle δ is less than or equal to 2p The absolute value of is beneficial to the production of the second adhesive layer 50 and to the control of the overall thickness of the black-bordered display glass 100. Alternatively, along the positive direction of the Y axis, the fourth wedge angle δ 2b The absolute value of decreases continuously. That is, along the positive direction of the Y axis, the thickness variation of the second segment 44 decreases gradually. 2b The absolute value of the fourth wedge angle δ 2bThe absolute value change rate of |ROC| is ≤0.3mrad / 100mm, so as to reduce the manufacturing difficulty of the second adhesive layer 50 and reduce the production cost. Preferably, the fourth wedge angle δ 2b The absolute value change rate of |ROC| is ≤ 0.2 mrad / 100 mm. More preferably, the fourth wedge angle δ 2b The absolute value of the rate of change |ROC|≤0.1mrad / 100mm. The wedge angle change rate ROC (rate of change) is the ratio of the difference between the wedge angles at any two positions to the distance between the two positions. A positive ROC value indicates an increase in the wedge angle, a negative ROC value indicates a decrease in the wedge angle, and a ROC value of 0 indicates that the wedge angle remains unchanged, that is, the wedge angle is a constant value.

[0100] The material of the first adhesive layer 40 is one or more of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), and ionic polymer film (SuperSafeGlasSGP). The minimum thickness of the first adhesive layer 40 is less than or equal to 0.76 mm, which can reduce the distance between the reflective surface 31 and the fourth surface 21, thereby reducing the first angle δ1 between the reflective surface 31 and the fourth surface 21, and further reducing the first wedge angle δ 1p , further reducing the difficulty of making the first adhesive layer 40, and reducing the height difference formed at the top boundary of the reflective layer 30, weakening or even eliminating the optical distortion generated at the top boundary. Preferably, the minimum thickness of the first adhesive layer 40 is less than or equal to 0.38 mm. More preferably, the minimum thickness of the first adhesive layer 40 is less than or equal to 0.2 mm. Further, the minimum thickness of the first adhesive layer 40 is less than or equal to 0.1 mm. Alternatively, the minimum thickness of the first adhesive layer 40 is less than or equal to 0.075 mm.

[0101] In this embodiment, the material of the second adhesive layer 50 can be the same as that of the first adhesive layer 40, so as to improve the bonding strength between the second adhesive layer 50 and the first adhesive layer 40, and ensure the consistency of the first adhesive layer 40 and the second adhesive layer 50, and at the same time, reduce the manufacturing cost of the black-bordered display glass 100. In other embodiments, the material of the second adhesive layer 50 can also be different from that of the first adhesive layer 40.

[0102] Among them, the minimum thickness of the second adhesive layer 50 is greater than or equal to 0.38 mm, which can ensure the overall strength of the black-bordered display glass 100. Preferably, the minimum thickness of the second adhesive layer 50 is greater than or equal to 0.5 mm. More preferably, the minimum thickness of the second adhesive layer 50 is greater than or equal to 0.76 mm. In order to control the total thickness of the black-bordered display glass 100 and achieve lightweight, it is preferred that the sum of the maximum thickness of the first adhesive layer 40 and the maximum thickness of the second adhesive layer 50 is less than or equal to 1.6 mm, that is, the maximum thickness of the adhesive layer 1 is less than or equal to 1.6 mm.

[0103] In some embodiments, the ratio of the minimum thickness of the second adhesive layer 50 to the minimum thickness of the first adhesive layer 40 is greater than or equal to 3.8; or, the ratio of the minimum thickness of the second adhesive layer 50 to the minimum thickness of the first adhesive layer 40 is greater than or equal to 7.6; or, the ratio of the minimum thickness of the second adhesive layer 50 to the minimum thickness of the first adhesive layer 40 is greater than or equal to 10.1; or, the ratio of the minimum thickness of the second adhesive layer 50 to the minimum thickness of the first adhesive layer 40 is greater than or equal to 15.2.

[0104] Please continue reading Figure 2 and Figure 5 The black-bordered display glass 100 further includes a shielding layer 60. The shielding layer 60 is located between the first surface 12 and the back surface 32 of the reflective layer 30. The shielding layer 60 covers the shielding area 102. Along the thickness direction of the black-bordered display glass 100, the orthographic projection of the shielding layer 60 completely covers the reflective layer 30. The shielding layer 60 can shield the reflective layer 30 in the thickness direction of the black-bordered display glass 100, so that the shielding layer 60 can serve as the display background of the projected image, better shield the external ambient light, avoid unnecessary interference of the line of sight, and can also improve the contrast between the projected image and the display background, so that the image display is clearer.

[0105] In one embodiment, the shielding layer 60 may also be disposed on the first surface 12 of the outer glass plate 10, that is, on the outer surface of the black-bordered display glass 100. Alternatively, the shielding layer 60 may also be disposed on the second surface 11 of the outer glass plate 10. Alternatively, the shielding layer 60 may also be disposed on the back surface 32 of the reflective layer 30. Alternatively, the shielding layer 60 may also be disposed in the second adhesive layer 50.

[0106] In one embodiment, the shielding layer 60 may be multiple. The shielding layer 60 is provided at any two or more positions of the first surface 12 of the outer glass plate 10, the second surface 11 of the outer glass plate 10, between the second surface 11 of the outer glass plate 10 and the second adhesive layer 50, inside the second adhesive layer 50, and on the back surface 32 of the reflective layer 30.

[0107] The visible light transmittance of the shielding layer 60 is less than or equal to 5%, for example, 5%, 4%, 3%, 2%, 1%, 0.5% or 0%, so that the shielding layer 60 has a better shielding effect.

[0108] In this embodiment, the shielding layer 60 is made of black ceramic ink, so that the entire shielding area 102 is black to improve the color consistency of the shielding area 102. From the outside of the vehicle body 210, the black-bordered display glass 100 is all black around, forming a black-bordered area of ​​the black-bordered display glass 100.

[0109] In other embodiments, the material of the shielding layer 60 may also be an opaque polymer film or a dimming film. The opaque polymer film may be a polymer film with coloring on the body, a polymer film with ink, paint or pigment printed on the surface, or a dyed or colored polymer film.

[0110] The dimming film can be a polymer dispersed liquid crystal film (PDLC), a suspended particle film (SPD), an electrochromic film (EC), a dye liquid crystal film (LC), etc. The minimum visible light transmittance of the dimming film is less than or equal to 5%, for example, 5%, 4%, 3%, 2%, 1%, 0.5%, 0%. In addition, the maximum visible light transmittance of the dimming film is set as needed, for example, the maximum visible light transmittance of the dimming film is 10%, 20%, 30%, 50%, 70%, 80%, etc. Exemplary: When black border display is required, the dimming film is in an opaque state, and the visible light transmittance of the dimming film is less than or equal to 5%, or even 0%, so as to improve the contrast between the projected image and the display background. When the display area 103 is not displayed, the dimming film is in a transparent state, and the visible light transmittance of the dimming film is greater than or equal to 70%, so that the black border display glass 100 has a larger transparent area.

[0111] See also Figures 7 to 10 , the horizontal axis in the figure is the distance to the bottom edge of the black-bordered display glass 100, in millimeters (mm); the vertical axis is the wedge angle, in mrad. Along the height direction of the black-bordered display glass 100, from the bottom edge to the top edge of the black-bordered display glass 100, the areas of the black-bordered display glass 100 are the bottom shielding area 1021, the light-transmitting area 101, and the top shielding area 1022 in sequence. The bottom shielding area 1021 includes the non-display area 104 and the display area 103. The non-display area 104 is closer to the bottom edge of the black-bordered display glass 100 than the display area 103. That is, from the bottom edge to the top edge of the black-bordered display glass 100, the areas of the black-bordered display glass 100 are the non-display area 104, the display area 103, the light-transmitting area 101, and the top shielding area 1022 in sequence.

[0112] Among them, curve W inneris a wedge angle variation curve of the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20, and the curve W outer is a wedge angle variation curve of the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10, and the curve W effective The wedge angle variation curve of the angle between the first surface 12 of the outer glass plate 10 and the fourth surface 21 of the inner glass plate 20 in the light transmission area 101 and the top shielding area 1022 is shown.

[0113] It should be noted that the curve W of the non-display area 104 is set inner and curve W outer It can be convenient for production, control the total thickness or facilitate the transition from the non-display area 104 to the display area 103, and set the curve W of the display area 103 inner The deviation angle of the secondary image between the reflected secondary image and the projected image can be reduced to reduce or even eliminate the visual reflection ghost of the black-bordered projected image. outer It can be easy to produce, control the total thickness, facilitate the transition from the non-display area 104 to the display area 103 or facilitate the transition from the display area 103 to the light-transmitting area 101, and set the curve W of the light-transmitting area 101 inner , Curve W outer and curve W effective It can be easy to produce, control the total thickness, facilitate the transition from the display area 103 to the light-transmitting area 101, facilitate the transition from the light-transmitting area 101 to the top shielding area 1022, weaken or even eliminate the transmission ghosting of the light-transmitting area 101, or realize W-HUD or AR-HUD in the light-transmitting area 101, and set the curve W of the top shielding area 1022 inner , Curve W outer and curve W effective This can facilitate production and manufacturing, control the total thickness, or facilitate the transition from the light-transmitting area 101 to the top shielding area 1022 .

[0114] Specifically, the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is greater than or equal to 0. It can be provided by the first bonding layer 40 alone, and the inner glass plate 20 has a rectangular structure at this time; it can also be provided by the inner glass plate 20 alone, and the first bonding layer 40 has a rectangular structure at this time; it can also be provided by both the first bonding layer 40 and the inner glass plate 20, and both the first bonding layer 40 and the inner glass plate 20 have a wedge-shaped structure.

[0115] Specifically, the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10 is less than or equal to 0. The bonding may be provided only by the second bonding layer 50, in which case the outer glass plate 10 has a rectangular structure; the bonding may be provided only by the outer glass plate 10, in which case the second bonding layer 50 has a rectangular structure; or the bonding may be provided jointly by the second bonding layer 50 and the outer glass plate 10, in which case both the second bonding layer 50 and the outer glass plate 10 have a wedge-shaped structure.

[0116] Specifically, the angle between the first surface 12 of the outer glass plate 10 of the light-transmitting area 101 and the top shielding area 1022 and the fourth surface 21 of the inner glass plate 20 is greater than 0 or equal to 0, which can be provided by at least one of the outer glass plate 10, the second adhesive layer 50, the first adhesive layer 40 and the inner glass plate 20.

[0117] like Figure 7 As shown, curve W inner The angle from the bottom to the top of the black-bordered display glass 100 remains constant, that is, the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant from the bottom to the top of the black-bordered display glass 100, and the angles between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 in the non-display area 104, the display area 103, the light-transmitting area 101 and the top shielding area 1022 are equal to each other and remain constant; Curve W outer The angle from the bottom to the top of the black-bordered display glass 100 is also kept constant, that is, the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10 is constant from the bottom to the top of the black-bordered display glass 100, and the angles between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10 in the non-display area 104, the display area 103, the light-transmitting area 101 and the top shielding area 1022 are equal to each other and constant. Among them, the angle between the first bonding surface 41 of the first bonding layer 40 in the display area 103 and the fourth surface 21 of the inner glass plate 20 is equal to the first angle δ1 between the reflective surface 31 of the reflective layer 30 and the fourth surface 21, thereby reducing the deviation angle of the secondary image between the reflected secondary image and the projected image to weaken or even eliminate the visual reflection ghost of the black-bordered projected image.

[0118] The angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is a positive number, that is, a positive wedge-shaped structure with a thick top and a thin bottom is formed between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20; the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10 is a negative number, that is, a reverse wedge-shaped structure with a thin top and a thick bottom is formed between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10; the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10, which is conducive to eliminating the transmission double image of the light-transmitting area 101. In some other embodiments, the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is equal to the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 has an overall rectangular structure, which is conducive to production.

[0119] like Figure 8 As shown, curve W inner The angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant only in the display area 103, as indicated by the solid line between a2 and a3; Curve W inner The non-display area 104 is not specifically limited, that is, the area between a1 and a2 is represented by a dotted line, and the curve W inner The wedge angle in the non-display area 104 can be constant or continuously variable; the curve W inner The wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and e1; the curve W inner The wedge angle in the top shielding area 1022 decreases continuously and eventually decreases to 0, as indicated by the solid line between e1 and e2. outer The wedge angles in the display area 103 and the non-display area 104 are not specifically limited, that is, the wedge angles between a1 and a3 are indicated by dashed lines, and the curve W outer The wedge angles in the display area 103 and the non-display area 104 can be constant or continuously variable; the curve W outer The absolute value of the wedge angle in the light-transmitting area 101 decreases continuously, as indicated by the solid line between a3 and e1; the curve W outer The absolute value of the wedge angle in the top shielding area 1022 decreases continuously and eventually decreases to 0, as indicated by the solid line between e1 and e2.

[0120] The curve W of the light-transmitting area 101 is inner and the curve W of the light-transmitting area 101 outerSymmetrically along the abscissa axis, the curve W of the top shielding area 1022 inner The curve W of the top shielding area 1022 outer The curve W is symmetrical to each other along the horizontal axis. effective It is constant to 0, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the light-transmitting area 101 and the top shielding area 1022 and the fourth surface 21 of the inner glass plate 20 is equal to the angle between the third bonding surface 51 of the second bonding layer 50 in the light-transmitting area 101 and the top shielding area 1022 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 has a rectangular structure in the light-transmitting area 101 and the top shielding area 1022, which is beneficial to controlling the total thickness of the light-transmitting area 101 and the top shielding area 1022 and is beneficial to the production of the black-bordered display glass 100.

[0121] like Fig. 9 As shown, curve W inner The angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant only in the display area 103, as indicated by the solid line between a2 and a3; Curve W inner The non-display area 104 is not specifically limited, that is, the area between a1 and a2 is represented by a dotted line, and the curve W inner The wedge angle in the non-display area 104 can be constant or continuously variable; the curve W inner The wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and e1; the curve W inner The wedge angle in the top shielding area 1022 is continuously reduced and finally becomes greater than 0, as indicated by the solid line between e1 and e2. outer The wedge angles in the display area 103 and the non-display area 104 are not specifically limited, that is, the wedge angles between a1 and a3 are indicated by dashed lines, and the curve W outer The wedge angles in the display area 103 and the non-display area 104 can be constant or continuously variable; the curve W outer The absolute value of the wedge angle in the light-transmitting area 101 first decreases continuously to 0, and then increases continuously to be greater than 0, as indicated by the solid line between a3 and e1; the curve W outer The wedge angle in the top shielding area 1022 increases continuously, as indicated by the solid line between e1 and e2.

[0122] The curve W of the light-transmitting area 101 and the top shielding area 1022 is effectiveis greater than 0 and increases continuously, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the light-transmitting area 101 and the top shielding area 1022 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 in the light-transmitting area 101 and the top shielding area 1022 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 is in a positive wedge structure in the light-transmitting area 101 and the top shielding area 1022, which can reduce or even eliminate the transmission ghosting of the light-transmitting area 101, thereby improving the clarity of the field of vision outside the vehicle and improving the driving safety of the driver and passengers. That is, the black-bordered display glass 100 provided in this embodiment can simultaneously solve the visual reflection ghosting problem of the display area 103 and the transmission ghosting problem of the light-transmitting area 101.

[0123] like Fig.10 As shown, curve W inner The angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant only in the display area 103, as indicated by the solid line between a2 and a3; Curve W inner The non-display area 104 is not specifically limited, that is, the area between a1 and a2 is represented by a dotted line, and the curve W inner The wedge angle in the non-display area 104 can be constant or continuously variable; the curve W inner The wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and e1; the curve W inner The wedge angle in the top shielding area 1022 is continuously reduced and finally equal to 0, as indicated by the solid line between e1 and e2. outer The wedge angles in the display area 103 and the non-display area 104 are not specifically limited, that is, the wedge angles between a1 and a3 are indicated by dashed lines, and the curve W outer The wedge angles in the display area 103 and the non-display area 104 can be constant or continuously variable; the curve W outer The absolute value of the wedge angle in the light-transmitting area 101 continuously decreases to 0 and remains at the top shielding area 1022, as indicated by the solid line between a3 and e1; the curve W outer The wedge angle in the top shielding area 1022 is constant at 0, as indicated by the solid line between e1 and e2.

[0124] The curve W of the light-transmitting area 101 is effectiveis greater than 0 and first increases continuously and then decreases continuously, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the light-transmitting area 101 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 is in a positive wedge-shaped structure in the light-transmitting area 101, which can reduce or even eliminate the transmission ghosting of the light-transmitting area 101, thereby improving the clarity of the field of vision outside the vehicle and improving the driving safety of the driver and passengers. That is, the black-bordered display glass 100 provided in this embodiment can simultaneously solve the visual reflection ghosting problem of the display area 103 and the transmission ghosting problem of the light-transmitting area 101. At the same time, the curve W of the top shielding area 1022 effective Being greater than 0 and decreasing continuously is beneficial to controlling the total thickness of the top shielding area 1022 and is beneficial to the production of the black-border display glass 100 .

[0125] See also Fig.11 In this embodiment, the black-bordered display glass 100 further includes a camera window area 105. A portion of the top shielding area 1022 surrounds the periphery of the camera window area 105. Exemplarily, a portion of the shielding layer 60 can be removed in the top shielding area 1022 to form the camera window area 105. The camera window area 105 is arranged opposite to the camera installed in the vehicle. The camera can collect data outside the vehicle through the camera window area 105, such as taking photos or recording videos. Along the height direction of the black-bordered display glass 100, from the bottom edge to the top edge of the black-bordered display glass 100, the areas of the black-bordered display glass 100 are sequentially the bottom shielding area 1021, the light-transmitting area 101, the camera window area 105, and the top shielding area 1022. That is, from the bottom edge to the top edge of the black-bordered display glass 100, the areas of the black-bordered display glass 100 are sequentially the non-display area 104, the display area 103, the light-transmitting area 101, the camera window area 105, and the top shielding area 1022.

[0126] The black-bordered display glass 100 located in the camera window area 105 has a wedge angle δ3. The wedge angle δ3 of the camera window area 105 is greater than 0. That is, the black-bordered display glass 100 is a positive wedge structure with a thick top and a thin bottom in the camera window area 105. The angle between the first surface 12 of the outer glass plate 10 and the fourth surface 21 of the inner glass plate 20 in the camera window area 105 is equal to the wedge angle δ3. In this embodiment, the wedge angle δ3 is greater than or equal to 0.05 mrad, or preferably the wedge angle δ3 is greater than or equal to 0.1 mrad, or preferably the wedge angle δ3 is greater than or equal to 0.15 mrad, or preferably the wedge angle δ3 is greater than or equal to 0.2 mrad, or preferably the wedge angle δ3 is greater than or equal to 0.25 mrad, or preferably the wedge angle δ3 is greater than or equal to 0.3 mrad. By setting the camera window area 105 to a positive wedge structure, the transmission ghosting in the camera window area 105 can be eliminated, thereby improving the clarity of the image captured by the camera from the camera window area 105.

[0127] Please also read Fig.12 , curve W inner The angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant only in the display area 103, as indicated by the solid line between a2 and a3; Curve W inner The non-display area 104 is not specifically limited, that is, the area between a1 and a2 is represented by a dotted line, and the curve W inner The wedge angle in the non-display area 104 can be constant or continuously variable; the curve W inner The wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and a4; the curve W inner The wedge angle in the camera window area 105 is continuously reduced, as indicated by the solid line between a4 and e1; the curve W inner The wedge angle in the top shielding area 1022 is continuously reduced and finally becomes greater than 0, as indicated by the solid line between e1 and e2. outer The wedge angles in the display area 103 and the non-display area 104 are not specifically limited, that is, the wedge angles between a1 and a3 are indicated by dashed lines, and the curve W outer The wedge angles in the display area 103 and the non-display area 104 can be constant or continuously variable; the curve W outer The absolute value of the wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and a4; the curve W outer The absolute value of the wedge angle in the camera window area 105 is continuously reduced, as indicated by the solid line between a4 and e1; the curve W outer The absolute value of the wedge angle in the top shielding area 1022 decreases continuously and is eventually greater than 0, as indicated by the solid line between e1 and e2.

[0128] Among them, curve W effective In the light transmission area 101, the camera window area 105 and the top shielding area 1022, the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 in the light transmission area 101, the camera window area 105 and the top shielding area 1022 is greater than 0 and remains unchanged, that is, the angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 in the light transmission area 101, the camera window area 105 and the top shielding area 1022 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 and the first surface 12 of the outer glass plate 10 in the light transmission area 101, the camera window area 105 and the top shielding area 1022, so that the black-bordered display glass 100 is in a positive wedge structure in the light transmission area 101, the camera window area 105 and the top shielding area 1022, which can reduce or even eliminate the transmission ghosting of the camera window area 105, thereby improving the clarity of the image captured by the camera from the camera window area 105. Accordingly, the curve W of the top shielding area 1022 is effective Being greater than 0 and remaining unchanged is beneficial to controlling the total thickness of the top shielding area 1022 and is beneficial to the production of the black-border display glass 100 .

[0129] Please also read Fig.13 , curve W inner The angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant only in the display area 103, as indicated by the solid line between a2 and a3; Curve W inner The non-display area 104 is not specifically limited, that is, the area between a1 and a2 is represented by a dotted line, and the curve W inner The wedge angle in the non-display area 104 can be constant or continuously variable; the curve W inner The wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and a4; the curve W inner The wedge angle in the camera window area 105 is continuously reduced, as indicated by the solid line between a4 and e1; the curve W inner The wedge angle in the top shielding area 1022 is continuously reduced and finally becomes greater than 0, as indicated by the solid line between e1 and e2. outer The wedge angles in the display area 103 and the non-display area 104 are not specifically limited, that is, the wedge angles between a1 and a3 are indicated by dashed lines, and the curve W outer The wedge angles in the display area 103 and the non-display area 104 can be constant or continuously variable; the curve W outer The absolute value of the wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and a4; the curve W outer The absolute value of the wedge angle in the camera window area 105 is continuously reduced, as indicated by the solid line between a4 and e1; the curve W outerThe absolute value of the wedge angle in the top shielding area 1022 continuously decreases to 0, as indicated by the solid line between e1 and e2.

[0130] The curve W of the light-transmitting area 101 is effective is greater than 0 and first increases continuously and then remains unchanged, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the light-transmitting area 101 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 is in a positive wedge-shaped structure in the light-transmitting area 101, which can reduce or even eliminate the transmission ghosting of the light-transmitting area 101, thereby improving the clarity of the field of vision outside the vehicle and improving the driving safety of the driver and passengers. That is, the black-bordered display glass 100 provided in this embodiment can simultaneously solve the visual reflection ghosting problem of the display area 103 and the transmission ghosting problem of the light-transmitting area 101. At the same time, the curve W of the camera window area 105 effective is greater than 0 and remains unchanged, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the camera window area 105 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 in the light transmission area 101 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 is in a positive wedge structure in the camera window area 105, which can reduce or even eliminate the transmission ghosting in the camera window area 105, thereby improving the clarity of the image captured by the camera from the camera window area 105. Correspondingly, the curve W of the top shielding area 1022 effective Being greater than 0 and remaining unchanged is beneficial to controlling the total thickness of the top shielding area 1022 and is beneficial to the production of the black-border display glass 100 .

[0131] See also Fig.14 In this embodiment, the light-transmitting area 101 includes a head-up display (HUD) area 1011 and a field of view transparent area 1012. The head-up display area 1011 is used to display driving information such as speed and navigation, and realize W-HUD or AR-HUD, so that the driver can see this information without lowering or turning his head, thereby improving driving safety. Specifically, the head-up display area 1011 is located in the light-transmitting area 101. When the black-bordered display glass 100 is installed on the vehicle 300, along the height direction of the black-bordered display glass 100, the head-up display area 1011 presents a positive wedge-shaped structure that is thick on the top and thin on the bottom, and the angle between the fourth surface 21 in the head-up display area 1011 and the first surface 12 is smaller than the first angle between the reflective surface 31 and the fourth surface 21.

[0132] Please also read Fig.15 , curve W innerThe angle between the first bonding surface 41 of the first bonding layer 40 and the fourth surface 21 of the inner glass plate 20 is constant only in the display area 103, as indicated by the solid line between a2 and a3; Curve W inner The non-display area 104 is not specifically limited, that is, the area between a1 and a2 is represented by a dotted line, and the curve W inner The wedge angle in the non-display area 104 can be constant or continuously variable; the curve W inner The wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and a4; the curve W inner The wedge angle in the camera window area 105 is continuously reduced, as indicated by the solid line between a4 and e1; the curve W inner The wedge angle in the top shielding area 1022 is continuously reduced and finally becomes greater than 0, as indicated by the solid line between e1 and e2. outer The wedge angles in the display area 103 and the non-display area 104 are not specifically limited, that is, the wedge angles between a1 and a3 are indicated by dashed lines, and the curve W outer The wedge angles in the display area 103 and the non-display area 104 can be constant or continuously variable; the curve W outer The absolute value of the wedge angle in the light-transmitting area 101 is continuously reduced, as indicated by the solid line between a3 and a4; the curve W outer The absolute value of the wedge angle in the camera window area 105 is continuously reduced, as indicated by the solid line between a4 and e1; the curve W outer The absolute value of the wedge angle in the top shielding area 1022 continuously decreases to 0, as indicated by the solid line between e1 and e2.

[0133] The curve W of the light-transmitting area 101 is effective is greater than 0 and decreases continuously, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the light transmission area 101 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 in the light transmission area 101 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 has a positive wedge structure in the light transmission area 101, which can reduce or even eliminate the visual reflection ghosting in the head-up display area 1011 and improve the clarity of the head-up display image. At the same time, the curve W of the camera window area 105 effectiveis greater than 0 and decreases continuously, that is, the angle between the first bonding surface 41 of the first bonding layer 40 in the camera window area 105 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third bonding surface 51 of the second bonding layer 50 in the light transmission area 101 and the first surface 12 of the outer glass plate 10, so that the black-bordered display glass 100 has a positive wedge structure in the camera window area 105, which can reduce or even eliminate the transmission ghosting of the camera window area 105, thereby improving the clarity of the image captured by the camera from the camera window area 105. Correspondingly, the curve W of the top shielding area 1022 effective Being greater than 0 and decreasing continuously is beneficial to controlling the total thickness of the top shielding area 1022 and is beneficial to the production of the black-border display glass 100 .

[0134] See also Fig.16 In this embodiment, when the black-bordered display glass 100 is installed on the vehicle 300, the inner glass plate 20 presents a positive wedge-shaped structure with a thick top and a thin bottom along the height direction of the black-bordered display glass 100. The inner glass plate 20 has a wedge angle δ4, and the wedge angle δ4 of the inner glass plate 20 is greater than 0. The thickness of the inner glass plate 20 gradually increases along the bottom edge to the top edge direction of the black-bordered display glass 100, that is, along the positive direction of the Y axis. The wedge angle δ4 of the inner glass plate 20 can be a constant value or a continuously changing value. When the wedge angle δ4 of the inner glass plate 20 is a continuously changing value, along the positive direction of the Y axis, the wedge angle δ4 of the inner glass plate 20 can increase monotonically, can decrease monotonically, or can decrease first and then increase.

[0135] In this embodiment, the first section 43 of the first adhesive layer 40 has a first wedge angle δ 1p The first included angle δ1 between the reflective surface 31 of the reflective layer 30 and the fourth surface 21 is the fourth wedge angle δ4 and the first wedge angle δ 1p The sum of δ1=δ4+δ 1p In this embodiment, by setting the inner glass plate 20 and the first section 43 of the first adhesive layer 40 to have a positive wedge structure, the reflective surface 31 and the fourth surface 21 of the inner glass plate 20 have a first angle, thereby reducing the deviation angle of the secondary image between the reflected secondary image and the projected image, and then making the reflected secondary image and the projected image close to each other or even overlapping, reducing or even eliminating the visual reflection ghost of the projected image, and improving the clarity of the projected image. In addition, in this embodiment, by setting the inner glass plate 20 to have a positive wedge structure, the first wedge angle δ of the first adhesive layer 40 can be reduced. 1p , thereby reducing the difficulty of manufacturing the first adhesive layer 40.

[0136] In one embodiment, the thickness of the first section 43 of the first adhesive layer 40 may also be uniform, that is, the first wedge angle δ 1pis 0. At this time, the reflective surface 31 is arranged parallel to the third surface 22 of the inner glass plate 20. The first angle δ1 between the reflective surface 31 of the reflective layer 30 and the fourth surface 21 is equal to the wedge angle δ4 of the inner glass plate 20, that is, δ1=δ4. In this embodiment, by setting the inner glass plate 20 to a positive wedge structure, there is no need to set a wedge angle on the first adhesive layer 40, so that the structure of the black-bordered display glass 100 can be simplified and the manufacturing difficulty of the black-bordered display glass 100 can be reduced.

[0137] It can be understood that the wedge angle δ4 of the inner glass plate 20 is less than or equal to the first angle between the reflective surface 31 and the fourth surface 21 , that is, δ4≤δ1.

[0138] In this embodiment, the outer glass plate 10 is a rectangular structure with uniform thickness, the inner glass plate 20 located in the light transmission area 101 has a wedge angle δ4, and the second section 44 of the first adhesive layer 40 has a second wedge angle δ 2a , the fourth section 54 of the second adhesive layer 50 has a fourth wedge angle δ 2b Among them, δ4 and δ 2a Greater than 0, δ 2b At this time, the angle δ2 between the fourth surface 21 in the light-transmitting area 101 and the first surface 12 is equal to δ4+δ 2a +δ 2b , that is, δ2=δ4+δ 2a -|δ 2b In this embodiment, by setting the fourth section 54 of the second adhesive layer 50 to an inverted wedge structure, the wedge angle of the first adhesive layer 40 and the wedge angle of the inner glass plate 20 can be partially offset, thereby reducing the wedge angle of the black-bordered display glass 100 located in the light-transmitting area 101, thereby preventing the wedge angle of the light-transmitting area 101 from being too large, thereby preventing the production of the black-bordered display glass 100 from being difficult and the cost from being too high.

[0139] See also Fig.17 In this embodiment, when the black-bordered display glass 100 is installed on the vehicle 300, along the height direction of the black-bordered display glass 100, the outer glass plate 10 presents an inverted wedge-shaped structure that is thin at the top and thick at the bottom, and has a wedge angle δ5. The wedge angle δ5 of the outer glass plate 10 is less than 0. In addition, along the direction from the bottom edge to the top edge of the black-bordered display glass 100, that is, along the positive direction of the Y axis, the thickness of the outer glass plate 10 gradually decreases. The wedge angle δ5 of the outer glass plate 10 can be a constant value or a continuously changing value. When the wedge angle δ5 of the outer glass plate 10 is a continuously changing value, along the positive direction of the Y axis, the absolute value of the wedge angle δ5 of the outer glass plate 10 can monotonically increase, can also monotonically decrease, or first decrease and then increase.

[0140] In this embodiment, the inner glass plate 20 is a rectangular structure with uniform thickness, and the first section 43 of the first adhesive layer 40 has a first wedge angle δ 1p The first wedge angle δ 1p greater than 0, that is, the first section 43 is a positive wedge structure, and the first angle δ1 between the reflecting surface 31 and the fourth surface 21 is equal to the first wedge angle δ 1p Consistent, that is, δ1=δ 1p .

[0141] The second section 44 of the first adhesive layer 40 has a second wedge angle δ 2a , the fourth section 54 of the second adhesive layer 50 has a fourth wedge angle δ 2b , the angle δ2 between the fourth surface 21 in the light-transmitting area 101 and the first surface 12 is equal to δ 2a +δ 2b +δ5, and δ 2a +δ 2b +δ5≥0. In some embodiments, the second wedge angle δ 2a >0, the fourth wedge angle δ 2b Can be greater than 0, then δ 2a +δ 2b -|δ5|≥0. In other embodiments, the second wedge angle δ 2a >0, the fourth wedge angle δ 2b can be equal to 0, then δ 2a -|δ5|≥0. In some other embodiments, the second wedge angle δ 2a >0, the fourth wedge angle δ 2b can be less than 0, then δ 2a -|δ 2b |-|δ5|≥0.

[0142] It should be noted that, since the downward viewing angle corresponding to the display area 103 is usually large and the virtual image distance is small, the first section 43 of the first adhesive layer 40 needs to be set with a larger wedge angle to reduce or even eliminate the visual reflection ghosting of the display area 103. At the same time, since the display area 103 is very close to the light-transmitting area 101, it is difficult for the wedge angle of the first adhesive layer 40 to be sharply reduced, resulting in the second wedge angle δ of the second section 44 of the first adhesive layer 40 in the light-transmitting area 101 being 2ais also relatively large. However, if the wedge angle of the light-transmitting area 101 is too large, it will cause serious transmission ghosting of the light-transmitting area 101, which will affect the human eye's observation of the road conditions in front of the vehicle 300 and seriously affect driving safety. The present application sets the outer glass plate 10 as an inverted wedge structure and / or sets the second adhesive layer 50 as an inverted wedge structure, which can partially offset the wedge angle of the first adhesive layer 40 and the inner glass plate 20, thereby reducing the angle δ2 between the fourth surface 21 and the first surface 12 in the light-transmitting area 101, avoiding the wedge angle of the light-transmitting area 101 being too large to cause obvious transmission ghosting, thereby improving the field of view clarity of the light-transmitting area 101 and improving driving safety.

[0143] See also Fig.18 In this embodiment, the black-bordered display glass 100 further includes a heat-insulating layer 80. The heat-insulating layer 80 at least covers the light-transmitting area 101. The heat-insulating layer 80 enables the black-bordered display glass 100 to have excellent heat-insulating performance, thereby improving the thermal comfort of the vehicle interior environment.

[0144] In this embodiment, the heat insulating layer 80 is disposed between the inner glass plate 20 and the first adhesive layer 40. In other embodiments, the heat insulating layer 80 may also be disposed on the fourth surface 21 or the first surface 12. Alternatively, the heat insulating layer 80 may also be disposed between the outer glass plate 10 and the second adhesive layer 50. Alternatively, the heat insulating layer 80 may also be disposed in the adhesive layer. Alternatively, the heat insulating layer 80 may also be disposed between the first adhesive layer 40 and the second adhesive layer 50.

[0145] The total solar transmittance (TTS) of the black-bordered display glass 100 with the heat-insulating layer 80 is less than or equal to 55%, preferably less than or equal to 50%, or even less than or equal to 45%. The lower the total solar transmittance, the better the heat-insulating performance of the black-bordered display glass 100.

[0146] The material of the heat insulation layer 80 can be one or more of single silver nano coating, double silver nano coating, triple silver nano coating, quadruple silver nano coating, ITO (Indium tin oxide) nano coating, FTO (fluorine-doped tin oxide) nano coating, and infrared blocking micro coating.

[0147] See also Fig.19 In this embodiment, the black-bordered display glass 100 further includes an electric heating element 70. The electric heating element 70 is disposed between the second adhesive layer 50 and the outer glass plate 10. In this embodiment, the electric heating element 70 covers the entire black-bordered display glass 100. That is, both the light-transmitting area 101 and the shielding area 102 are provided with the electric heating element 70. In other embodiments, the electric heating element 70 may also only cover the light-transmitting area 101, or partially cover the light-transmitting area 101. Exemplarily, the electric heating element 70 covers the display area 103 and the wiper parking area.

[0148] The electric heating element 70 includes a heating layer 71 and at least two busbars 72. The heating layer 71 can be a single silver electric heating coating, a double silver electric heating coating, a triple silver electric heating coating, a quadruple silver electric heating coating, a five silver electric heating coating, a TCO electric heating coating, a metal wire, a printed silver paste wire, a nano silver wire, a carbon fiber wire, a metal grid or a graphene heating sheet. The electric heating element 70 can make the black-bordered display glass 100 have a power of at least 400 W / m 2 The heating layer 71 may also be disposed on the second surface 11, or on the third surface 22, or in the adhesive layer. The heating layer 71 at least covers the light-transmitting area 101.

[0149] The busbar 72 is disposed on the surface of the heating layer 71 facing away from the outer glass plate 10 and is electrically connected to the heating layer 71. The at least two busbars 72 include a first busbar 721 and a second busbar 722. In this embodiment, the first busbar 721 is disposed in the bottom shielding area 1021, and the second busbar 722 is disposed in the top shielding area 1022. Along the thickness direction of the black-bordered display glass 100, the orthographic projection of the first busbar 721 is located in the shielding layer 60 of the bottom shielding area 102, and the orthographic projection of the second busbar 722 is located in the shielding layer 60 of the top shielding area 1022. The shielding layer 60 shields the busbar 72, which can prevent the busbar 72 from being seen outside the vehicle, thereby improving the consistency of the appearance of the black-bordered display glass 100.

[0150] One of the first busbar 721 and the second busbar 722 is electrically connected to the positive electrode of the power supply (not shown), and the other busbar 72 is electrically connected to the negative electrode of the power supply (not shown). The current of the power supply is input to the heating layer 71 through at least two busbars 72, so that the heating layer 71 generates heat, thereby heating the black-bordered display glass 100 to achieve the defog and defrost functions, thereby avoiding the interference of fog on the projected image and the driving field of view, and further improving driving safety.

[0151] In this embodiment, the black-bordered display glass 100 further includes a first auxiliary shielding layer 81, which is disposed between the electric heating element 70 and the reflective layer 30. Along the thickness direction of the black-bordered display glass 100, the orthographic projection of the first auxiliary shielding layer 81 completely covers the reflective layer 30 and the first busbar 721. The first auxiliary shielding layer 81 shields the first busbar 721, thereby preventing the first busbar 721 from being seen from inside the vehicle, and preventing the first busbar 721 from interfering with or affecting the projected image.

[0152] The material of the first auxiliary shielding layer 81 is an opaque polymer film or a dimming film. The first auxiliary shielding layer 81 and the shielding layer 60 together serve as the display background of the projected image, which can better block the external ambient light and avoid unnecessary interference in the line of sight. It can also improve the contrast between the projected image and the display background to make the image display clearer.

[0153] In this embodiment, the black-bordered display glass 100 further includes a second auxiliary shielding layer 82, which is disposed on the fourth surface 21 of the inner glass plate 20. Along the thickness direction of the black-bordered display portion, the orthographic projection of the second auxiliary shielding layer 82 covers the second busbar 722. The second auxiliary shielding layer 82 shields the first busbar 721, thereby preventing the second busbar 722 from being seen from inside the vehicle, thereby improving the consistency of the appearance of the black-bordered display glass 100.

[0154] In this embodiment, the material of the second auxiliary shielding layer 82 is black ceramic ink. Along the thickness direction of the black-bordered display glass 100, the orthographic projection of the second auxiliary shielding layer 82 also covers the edge of the reflective layer 30 close to the light-transmitting area 101, thereby shielding the edge of the reflective layer 30 from inside the vehicle, which can improve the overall aesthetics.

[0155] In one embodiment, the second adhesive layer 50 includes at least one outer sublayer and at least one sound insulation sublayer. The hardness of the sound insulation sublayer is less than that of the outer sublayer. The sound insulation sublayer is located between one of the outer sublayers and the first adhesive layer 40. In this embodiment, by providing the sound insulation sublayer, a sound insulation effect can be achieved, reducing the transmission of sound from the outside of the vehicle 300 to the inside of the vehicle 300, and reducing the transmission of sound from the inside of the vehicle 300 to the outside of the vehicle 300, thereby improving the driving comfort of the driver and passengers.

[0156] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A black-bordered display glass, characterized in that: The black-bordered display glass comprises a light-transmitting area and a shielding area, wherein the visible light transmittance of the light-transmitting area is greater than or equal to 70%, the visible light transmittance of the shielding area is less than or equal to 5%, and at least one display area is provided in the shielding area; The black-border display glass comprises an outer glass plate, an inner glass plate, an adhesive layer and a reflective layer, the outer glass plate comprises a first surface and a second surface disposed opposite to each other, the inner glass plate comprises a third surface and a fourth surface disposed opposite to each other, and the adhesive layer is connected between the second surface and the third surface; The reflective layer is disposed between the inner glass plate and the outer glass plate, and the reflective layer at least covers the display area; When the black-bordered display glass is installed on a vehicle, along the thickness direction of the black-bordered display glass, the distance between the top end of the reflective layer and the fourth surface is greater than the distance between the bottom end of the reflective layer and the fourth surface.

2. The black-bordered display glass according to claim 1, characterized in that: The reflective layer has a reflective surface, which faces the inner glass plate. A first angle between the reflective surface and the fourth surface is greater than or equal to 0.3 mrad, or a first angle between the reflective surface and the fourth surface is greater than or equal to 0.5 mrad, or a first angle between the reflective surface and the fourth surface is greater than or equal to 0.7 mrad.

3. The black-bordered display glass according to claim 1, characterized in that: The top edge of the reflective layer is not located in the light-transmitting area.

4. The black-bordered display glass according to claim 1, characterized in that: The adhesive layer includes a first adhesive layer and a second adhesive layer, the reflective layer is arranged between the first adhesive layer and the second adhesive layer, the first adhesive layer is located between the reflective layer and the third surface, and the second adhesive layer is located between the reflective layer and the second surface.

5. The black-bordered display glass according to claim 4, characterized in that: When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the first adhesive layer includes a first section and a second section connected in sequence, the first section covers the display area, and the second section at least covers the light-transmitting area; The first section is in a right wedge-shaped structure that is thick at the top and thin at the bottom, and has a first wedge angle.

6. The black-bordered display glass according to claim 5, characterized in that: The second section is in a positive wedge-shaped structure that is thick at the top and thin at the bottom, and has a second wedge angle, which is less than or equal to the first wedge angle; Alternatively, the second section is in an inverted wedge-shaped structure that is thin at the top and thick at the bottom, and has a second wedge angle, and the absolute value of the second wedge angle is smaller than the first wedge angle.

7. The black-bordered display glass according to claim 5, characterized in that: When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the second adhesive layer includes a third segment and a fourth segment connected in sequence, the third segment covers the display area, and the fourth segment at least covers the light-transmitting area; the reflective layer is located between the first segment and the third segment, the third segment has an inverted wedge-shaped structure that is thin on the top and thick on the bottom, and has a third wedge angle.

8. The black-bordered display glass according to claim 7, characterized in that: An absolute value of the sum of the first wedge angle and the third wedge angle is less than or equal to 0.50 mrad.

9. The black-bordered display glass according to claim 7, characterized in that: The fourth section is an inverted wedge-shaped structure that is thin at the top and thick at the bottom, and has a fourth wedge angle, the second section is a positive wedge-shaped structure that is thick at the top and thin at the bottom, and has a second wedge angle, and the absolute value of the fourth wedge angle is less than or equal to the second wedge angle; Alternatively, the fourth section is a positive wedge-shaped structure that is thick on the top and thin on the bottom, and has a fourth wedge angle, and the second section is a reverse wedge-shaped structure that is thin on the top and thick on the bottom, and has a second wedge angle, and the absolute value of the second wedge angle is less than or equal to the fourth wedge angle.

10. The black-bordered display glass according to claim 9, characterized in that: The sum of the second wedge angle and the fourth wedge angle is less than or equal to 0.50 mrad.

11. The black-bordered display glass according to claim 1, characterized in that: The black-bordered display glass also includes a shielding layer, which is arranged between the outer glass plate and the reflective layer. The shielding layer covers the shielding area, and the shielding area includes a top shielding area and a bottom shielding area. The top shielding area and the bottom shielding area are respectively located on opposite sides of the light-transmitting area, and the display area is arranged in the bottom shielding area.

12. The black-bordered display glass according to claim 2, characterized in that: The black-bordered display glass also includes a camera window area. When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the camera window area presents a positive wedge-shaped structure that is thick on the top and thin on the bottom, and the angle between the fourth surface in the camera window area and the first surface is greater than or equal to 0.05 mrad.

13. The black-bordered display glass according to claim 2, characterized in that: The light-transmitting area includes a head-up display area. When the black-bordered display glass is installed on a vehicle, the head-up display area presents a positive wedge-shaped structure that is thick on the top and thin on the bottom along the height direction of the black-bordered display glass. The angle between the fourth surface in the head-up display area and the first surface is smaller than the first angle between the reflective surface and the fourth surface.

14. The black-bordered display glass according to claim 2, characterized in that: When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the light-transmitting area presents a positive wedge-shaped structure that is thick at the top and thin at the bottom, and the angle between the fourth surface in the light-transmitting area and the first surface is smaller than the first angle between the reflective surface and the fourth surface.

15. The black-bordered display glass according to claim 2, characterized in that: When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the inner glass plate presents a positive wedge-shaped structure that is thick at the top and thin at the bottom, and the wedge angle of the inner glass plate is less than or equal to the first angle between the reflective surface and the fourth surface.

16. The black-bordered display glass according to claim 1, characterized in that: When the black-bordered display glass is installed on a vehicle, along the height direction of the black-bordered display glass, the outer glass plate presents an inverted wedge-shaped structure that is thin at the top and thick at the bottom.

17. The black-bordered display glass according to claim 1, characterized in that: The black-bordered display glass further comprises a heat-insulating layer, which is arranged on the second surface, or on the third surface, or in the adhesive layer; the heat-insulating layer at least covers the light-transmitting area.

18. The black-bordered display glass according to claim 1, characterized in that: The black-bordered display glass also includes a heating layer and at least two busbars, the busbars are electrically connected to the heating layer, the heating layer is arranged on the second surface, or on the third surface, or in the adhesive layer; the heating layer at least covers the light-transmitting area.

19. The black-bordered display glass according to claim 4, characterized in that: The second adhesive layer includes at least one outer sublayer and at least one sound insulation sublayer, the hardness of the sound insulation sublayer is less than the hardness of the outer sublayer, and the sound insulation sublayer is located between one of the outer sublayers and the first adhesive layer.

20. A black border display system, characterized in that: The black-border display system includes a projection device and a black-border display glass as described in any one of claims 1 to 19, wherein the projection device is arranged on a side of the black-border display glass close to the fourth surface; the projection device is used to emit projection light, wherein the projection light includes at least 80% of P-polarized light, and the reflective layer is used to reflect the projection light to form a projection image.

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