Black border display glass and black border display system

Abstract

This application provides a black-edge display glass and a black-edge display system. The black-edge display glass includes a light-transmitting area and a shielding area. At least one display area is provided within the shielding area. The black-edge display glass includes an outer glass panel, an inner glass panel, an adhesive layer, and a reflective layer. The outer glass panel includes a first surface and a second surface disposed opposite to each other, and the inner glass panel includes a third surface and a fourth surface disposed opposite to each other. The adhesive layer connects the second surface and the third surface. The reflective layer is disposed between the inner glass panel and the outer glass panel, and the reflective layer at least covers the display area. When the black-edge display glass is installed in a vehicle, along the thickness direction of the black-edge display glass, the distance between the top edge of the reflective layer and the fourth surface is greater than the distance between the bottom edge of the reflective layer and the fourth surface. The black-edge display glass provided by this application can solve the technical problems of ghosting and unclear images in the black-edge display area.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a black-bordered display glass and a black-bordered display system. Background Technology

[0002] With the development of technologies such as vehicle intelligence, automation, and connectivity, 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 through glass-bordered displays, head-up displays (HUDs), instrument panels, central control screens, passenger-side displays, and combinations thereof, to meet the needs of multi-form, near-far, and multi-level displays, thereby bringing a more comfortable, safe, and intelligent experience and rich information to drivers and passengers.

[0003] Black border displays typically lie between the dashboard and the transparent viewing area of ​​the windshield. Compared to traditional dashboard displays, this allows the driver's gaze to be less drawn away from the road, significantly improving driving safety. Existing technologies disclose black border display solutions using P-polarized light and a reflective layer in the windshield, such as patent CN115250617A. However, because the black border display is close to the dashboard, the downward viewing angle corresponding to the projected image is usually large, requiring a large incident angle of the projected light. This results in a significant deviation from the Brewster angle, causing more reflections of the P-polarized light on the inner surface of the windshield, creating visible ghosting and 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 that can avoid ghosting of projected images, thereby improving driving safety and visual comfort.

[0005] In a first aspect, this application provides a black-edged display glass, which includes a light-transmitting area and a shielding area. The visible light transmittance of the light-transmitting area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%. At least one display area is provided in the shielding area.

[0006] The black-edged display glass includes an outer glass plate, an inner glass plate, an adhesive layer, and a reflective layer. The outer glass plate includes a first surface and a second surface arranged opposite to each other. The inner glass plate includes a third surface and a fourth surface arranged opposite to each other. The adhesive layer connects 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-edged display glass is installed in a vehicle, along the thickness direction of the black-edged 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 enters the display area of ​​the black-bordered display glass from the fourth surface, passes through the fourth surface into the black-bordered display glass and reaches the reflective layer. After being reflected by the reflective layer, it forms reflected light. The reflected light exits from the fourth surface and enters the eyes of the driver and passengers to form a projected image, thus forming a projected image in the display area of ​​the black-bordered display glass.

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

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

[0012] In one 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, with the first adhesive layer located between the reflective layer and the third surface, and the second adhesive layer located between the reflective layer and the second surface.

[0013] In one possible implementation, when the black-edged display glass is installed in a vehicle, along the height direction of the black-edged display glass, the first adhesive layer includes a first segment and a second segment connected in sequence, the first segment covering the display area, and the second segment at least covering the light-transmitting area; the first segment has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a first wedge angle.

[0014] In one possible implementation, the second segment has a wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a second wedge angle that is less than or equal to the first wedge angle;

[0015] Alternatively, the second segment may have an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and may have a second wedge angle, the absolute value of which is smaller than the first wedge angle.

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

[0017] In one possible implementation, the 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 one possible implementation, the fourth segment has an inverted wedge shape with a thinner top and a thicker bottom, and has a fourth wedge angle; the second segment has a positive wedge shape with a thicker top and a thinner bottom, and has a second wedge angle; the absolute value of the fourth wedge angle is less than or equal to the second wedge angle.

[0019] Alternatively, the fourth segment has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a fourth wedge angle; the second segment has a negative wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a second wedge angle; the absolute value of the second wedge angle is less than or equal to the fourth wedge angle.

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

[0021] In one possible implementation, the black-edged display glass further includes a shielding layer disposed between the outer glass panel and the reflective layer. The shielding layer covers the shielding area, which includes a top shielding area and a bottom shielding area. The top shielding area and the bottom shielding area are located on opposite sides of the light-transmitting area, and the display area is located within the bottom shielding area.

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

[0023] In one possible implementation, the light-transmitting area includes a head-up display area. When the black-edged display glass is installed in a vehicle, the head-up display area has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass. The angle between the fourth surface and the first surface in the head-up display area is smaller than the first angle between the reflective surface and the fourth surface.

[0024] In one possible implementation, when the black-edged display glass is installed in a vehicle, the light-transmitting area has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass, and the angle between the fourth surface and the first surface in the light-transmitting area is smaller than the first angle between the reflective surface and the fourth surface.

[0025] In one possible implementation, when the black-edged display glass is installed in a vehicle, the inner glass plate has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass, 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.

[0026] In one possible implementation, when the black-edged display glass is installed in a vehicle, the outer glass panel has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom along the height direction of the black-edged display glass.

[0027] In one possible implementation, the black-edged display glass further includes a heat insulation layer 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 one possible implementation, the black-edged display glass further includes a heating layer and at least two busbars, the busbars being electrically connected to the heating layer, the heating layer being 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 one possible implementation, the second adhesive layer includes at least one outer sublayer and at least one sound-insulating sublayer, the sound-insulating sublayer having a lower hardness than the outer sublayer, and the sound-insulating sublayer being located between one of the outer sublayers and the first adhesive layer.

[0030] Secondly, this application provides a black border display system. The black border display system includes a projection device and a black border display glass, the projection device being disposed on the side of the black border display glass near the fourth surface; the projection device is used to emit projection light, the projection light including at least 80% P-polarized light, and the reflective layer is used to reflect the projection light to form a projected image.

[0031] This application, by using a shielding layer as the display background for the projected image, can better block ambient light, avoid unnecessary interference with the viewing experience, and improve the contrast between the projected image and the display background, resulting in a clearer image. Simultaneously, 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, this application can reduce the sub-image deviation angle between the reflected sub-image and the projected image, thereby bringing the reflected sub-image closer to or even overlapping the projected image, reducing or even eliminating visual reflection ghosting in the projected image, and improving the clarity of the projected image. Attached Figure Description

[0032] Figure 1 This is a structural diagram of the vehicle provided in this application;

[0033] Figure 2 This is a schematic diagram of the black border display system provided in this application;

[0034] Figure 3 A schematic diagram of a structure for viewing the black-edged display glass from inside a vehicle, as provided in this application;

[0035] Figure 4 Another structural schematic diagram of the black-edged display glass as viewed from inside the vehicle, provided for this application;

[0036] Figure 5 for Figure 2 The diagram shown is an exploded view of the black-bordered display glass.

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

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

[0039] Figure 8 The wedge angle variation curve of the second embodiment of the black-bordered display glass provided in this application;

[0040] Figure 9 The wedge angle variation curve of the third embodiment of the black-bordered display glass provided in this application;

[0041] Figure 10 The wedge angle variation curve of the fourth embodiment of the black-bordered display glass provided in this application;

[0042] Figure 11 A cross-sectional view of the black-edged display glass with a wedge-shaped structure in the camera window area provided in this application;

[0043] Figure 12 The wedge angle variation curve of the fifth embodiment of the black-bordered display glass provided in this application;

[0044] Figure 13 The wedge angle variation curve of the sixth embodiment of the black-bordered display glass provided in this application;

[0045] Figure 14 A cross-sectional view of the black-bordered display glass with a head-up display area, as seen from inside the vehicle, provided for this application;

[0046] Figure 15 The wedge angle variation curve of the seventh embodiment of the black-bordered display glass provided in this application;

[0047] Figure 16 A cross-sectional view of the black-edged display glass with a wedge-shaped inner glass panel provided in this application;

[0048] Figure 17 A cross-sectional view of the black-edged display glass with an inverted wedge-shaped outer glass panel provided in this application;

[0049] Figure 18 A cross-sectional view of the black-edged display glass with a heat-insulating layer provided in this application;

[0050] Figure 19 A cross-sectional view of the black-edged display glass with an electric heating element provided in this application.

[0051] Reference numerals: Vehicle 300, Vehicle body 210; Black border display system 200; Black border display glass 100; Projection device 110; Light-transmitting area 101; Shading area 102; Bottom shading area 1021; Top shading area 1022; Left side shading area 1023; Right side shading area 1024; Display area 103; Non-display area 104; Camera window area 105; Head-up display area 1011; Transparent field of view area 1012; Outer glass plate 10; Second surface 11; First surface 12; Reflective layer 30; Reflective 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 segment 43; Second segment 44; First wedge angle δ 1p Second wedge angle δ 2a Third bonding surface 51; Fourth bonding surface 52; Third segment 53; Fourth segment 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 Implementation

[0052] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0053] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, "multiple" in this application refers to two or more.

[0054] This application provides a means of transportation. Means of transportation include, but are not limited to, vehicles, airplanes, trains, subways, and light rail. The following description uses "vehicle" as the term for a means of transportation.

[0055] Please see Figure 1 and Figure 2 This application provides a vehicle 300. The vehicle 300 includes a vehicle body 210 and a black-border display system 200. The black-border display system 200 includes a black-border display glass 100 and a projection device 110. The black-border display glass 100 is installed at an opening in the vehicle body 210, dividing the vehicle 300 into its exterior and interior. The projection device 110 is installed inside the vehicle 300 and emits projection light. The projection light is incident on the black-border display glass 100, which reflects the projection light into the eyes of the driver and passengers, forming a projected image. This allows the driver and passengers to observe the projected image without significantly lowering their heads, thus reducing the time required for their eyes to leave the road and maintaining more attention on the road or nearby areas. This facilitates observation of the real-time external conditions of the vehicle 300 and makes it easier to obtain necessary driving assistance information such as driving information and entertainment information, thereby greatly improving driving safety. The image displayed on the black-bordered display glass 100 provided in this embodiment can partially or even completely replace the traditional dashboard, or even eliminate the traditional dashboard altogether.

[0056] The projected light can include at least 80% P-polarized light. The higher the proportion of P-polarized light in the projected light, the better it meets the usage needs of drivers wearing sunglasses and the easier it is to eliminate visual reflection ghosting phenomena in the displayed image. For example, the projected light includes at least 85% P-polarized light, or at least 90% P-polarized light, or at least 95% P-polarized light, or even 100% P-polarized light, that is, the projected light is essentially 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-edged display glass 100 may serve as the windshield, rear windshield, side window, or corner window of the vehicle 300. The following description uses the example of the black-edged display glass 100 serving as the windshield.

[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 as the Y direction, and the thickness direction as the Z direction. The X, Y, and Z directions are all perpendicular to each other. It can be understood that the X direction is parallel or approximately parallel to the width direction of the vehicle 300, the positive Y-axis points towards the roof, and the negative Y-axis points towards the bottom.

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

[0060] Please see Figure 3 and Figure 4 The black-edged display glass 100 has a light-transmitting area 101 and a shielding area 102. The shielding area 102 is disposed around the outer 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 as to facilitate the observation of the external environment by occupants of 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 enhancing 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, i.e., 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 located on opposite sides of the light-transmitting area 101. The bottom shielding area 1021 is located below the light-transmitting area 101, i.e., on the negative Y-axis side of the light-transmitting area 101. The top shielding area 1022 is located above the light-transmitting area 101, i.e., on the positive Y-axis side of the light-transmitting area 101. The left shielding area 1023 and the right shielding area 1024 are also located on opposite sides of the light-transmitting area 101. The left shielding area 1023 is located to the left of the light-transmitting area 101, i.e., on the negative X-axis side of the light-transmitting area 101. The right shielding area 1024 is located to the right of the light-transmitting area 101, i.e., on the positive X-axis side 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, together surrounding the outer periphery of the light-transmitting area 101, and forming the shielding area 102.

[0062] Please continue reading. Figure 3 The shaded area 102 includes a display area 103 and a non-display area 104. Projection light emitted from the projection device 110 is projected onto the display area 103, thus forming a projected image. The projected image can display vehicle 300 driving information, patterns, text, or video, etc. The displayed information can be used in various scenarios such as welcoming guests, creating an atmosphere, watching movies, and office work. 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, and real-view maps.

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

[0064] like Figure 4As shown, there are multiple display areas 103. These multiple display areas 103 are spaced apart within the bottom obscuring area 1021. For example, there are eight display areas 103. All eight display areas 103 are located in the bottom obscuring area 1021 and are spaced apart along the X direction. In other embodiments, there may be two, three, or more display areas 103. The specific number of display areas 103 can be designed according to actual needs. Display areas 103 can be located within any two or three of the following obscuring areas 102: the bottom obscuring area 1021, the top obscuring area 1022, the left obscuring area 1023, and the right obscuring area 1024; or display areas 103 may be provided in all three obscuring areas: the bottom obscuring area 1021, the top obscuring area 1022, the left obscuring area 1023, and the right obscuring area 1024. For example, there are two display areas 103, one of which is located in the bottom shaded area 1021 and close to the dashboard; the other is located in the top shaded area 1022 and near the rearview mirror inside the vehicle.

[0065] The display area 103 can cover only a portion of the bottom obscured area 1021, or it can cover the entire bottom obscured area 1021, to form a continuous panoramic display effect from A-pillar to A-pillar.

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

[0067] Please refer to the following: Figure 2 and Figure 5 The black-edged display glass 100 is laminated glass. The black-edged display glass 100 includes an outer glass panel 10, an inner glass panel 20, an adhesive layer 1, and a reflective layer 30. Along the thickness direction of the black-edged display glass 100, the outer glass panel 10, the adhesive layer 1, the reflective layer 30, and the inner glass panel 20 are stacked, with the adhesive layer 1 and the reflective layer 30 both located between the outer glass panel 10 and the inner glass panel 20.

[0068] When the black-edged display glass 100 is installed on the vehicle body 210, the outer glass panel 10 faces the outside of the vehicle 300, and the inner glass panel 20 faces the inside of the vehicle 300. The inner glass panel 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 panel 20. The third surface 22 of the inner glass panel 20 faces the adhesive layer 1 and is bonded and fixed to the adhesive layer 1. When the black-edged display glass 100 is installed on the vehicle body 210, the fourth surface 21 of the inner glass panel 20 faces the inside of the vehicle 300, serving as the inner surface of the black-edged display glass 100.

[0069] The outer glass panel 10 includes a second surface 11 and a first surface 12. The second surface 11 and the first surface 12 are disposed opposite to each other along the thickness direction of the outer glass panel 10. The second surface 11 of the outer glass panel 10 faces the adhesive layer 1 and is bonded and fixed to the adhesive layer 1. When the black-edge display glass 100 is installed on the vehicle body 210, the first surface 12 of the outer glass panel 10 faces the outside of the vehicle 300, serving as the outer surface of the black-edge 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 disposed 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, with the reflective surface 31 facing the inner glass plate 20. The reflective layer 30 is located within the shielding area 102 of the black-border 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-border display glass 100 completely covers the display area 103.

[0071] The reflective layer 30 is located outside the field of view B reduction 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 having an adverse effect on the appearance, thereby avoiding affecting the field of vision of the driver and passengers.

[0072] When the black-edged 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-edged display glass 100. Projected light rays are incident on the display area 103. The fourth surface 21 reflects the projected light rays to form a reflected sub-image. The projected light rays passing through the fourth surface 21 are incident on the reflective surface 31 of the reflective layer 30. The reflective surface 31 reflects the projected light rays and then exits from the fourth surface 21 to form a projected image. In order to reduce or even eliminate the reflected sub-image, this application sets that when the black-border display glass 100 is installed on the vehicle 300, along the thickness direction of the black-border 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 there is a first included angle δ1 between the reflective surface 31 and the fourth surface 21, the first included angle δ1 is an acute angle, thereby reducing the sub-image deviation angle between the reflected sub-image and the projected image, thereby making the reflected sub-image and the projected image closer to each other or even overlap, reducing or even eliminating the visual reflection ghosting of the projected image, and improving the clarity of the projected image.

[0073] Since the display area 103 is close to the dashboard, the downward viewing angle corresponding to the projected image seen by the human eye is usually large, and the incident angle of the projected light can be 45° to 75°, or even 65° to 75°. The first included angle δ1 is greater than or equal to 0.3 mrad. For example, the first included angle δ1 can be 0.3 mrad, 0.4 mrad, 0.5 mrad, 0.6 mrad, 0.7 mrad, 0.75 mrad, 0.8 mrad, 0.9 mrad, 1.0 mrad, 1.1 mrad, 1.2 mrad, 1.3 mrad, 1.4 mrad, or 1.5 mrad, etc. Alternatively, the first included angle δ1 is greater than or equal to 0.5 mrad. Alternatively, the first included angle δ1 can also be greater than or equal to 0.7 mrad. Alternatively, the first included angle δ1 can also be greater than or equal to 0.9 mrad. Alternatively, the first included angle δ1 can also be greater than or equal to 1.0 mrad. Alternatively, the first included angle δ1 can also be greater than or equal to 1.1 mrad. Alternatively, the first included angle δ1 can also be greater than or equal to 1.2 mrad. In this embodiment, by setting the first included angle δ1 to be greater than or equal to 0.5 mrad, the offset angle between the reflected sub-image and the projected image can be effectively reduced, thereby bringing the reflected sub-image and the projected image closer to each other or even overlapping, thus improving the clarity of the projected image. In actual design, considering design cost and design difficulty, the first included angle δ1 is less than or equal to 2.0 mrad, and further less than or equal to 1.8 mrad.

[0074] The inner glass plate 20 is either transparent or tinted glass. The outer glass plate 10 is either transparent or tinted glass. The total iron content (as 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 (as 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 facilitates more projection light to enter the reflective layer 30, thereby improving the brightness of the projected image; the outer glass plate 10 is tinted glass, which facilitates improving the heat insulation effect of the black-edge 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 reflecting surface 31 and the fourth surface 21 affects the sub-image deviation angle between the reflected sub-image and the projected image. The greater the distance between the reflecting surface 31 and the fourth surface 21, the greater the sub-image deviation angle between the reflected sub-image and the projected image, resulting in more obvious ghosting and poorer clarity of the projected image. In this case, the first included angle δ1 between the reflecting layer 30 and the fourth surface 21 needs to be set larger to reduce or eliminate visual reflection ghosting.

[0077] In this embodiment, by setting the thickness of the inner glass plate 20 to 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 included angle δ1 between the reflective surface 31 and the fourth surface 21, and thus reducing the manufacturing difficulty of the black-edge display glass 100.

[0078] The reflective layer 30 is a multilayer polymer film, and the thickness of the multilayer polymer film is preferably from 20 μm to 500 μm, specifically for 20 μm, 50 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, etc., and more preferably from 50 μm to 300 μm. Laminated polymer films consist of dozens, hundreds, or even thousands of alternating layers of two resin films with different refractive indices. The resin films can be made of at least one of the following: polyethylene terephthalate (PET), polyethylene naphthalate (PEN), styroscopic polystyrene (sPS), polybutylene terephthalate (PBT), polycyclohexanediol terephthalate (PCT), polyetherimide (PEI), and polymethacrylamide (PMI). Laminated polymer films are commercially available from companies such as 3M, Toray Industries, Sekisui Chemicals, and Eastman Chemical Company.

[0079] The reflective layer 30 is an ultrathin substrate with a high-low refractive index stack or a metal stack. The thickness of the ultrathin substrate is 20 μm to 300 μm, 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 ultrathin substrate is soda-lime glass, high-alumina glass, lithium aluminum glass, borosilicate glass, polyethylene terephthalate, or polycarbonate. The high-low refractive index stack or metal stack is deposited on the surface of the ultrathin substrate by magnetron sputtering. A high-low refractive index stack comprises at least one stacked structure, each stacked structure comprising a high refractive index layer and a low refractive index layer stacked sequentially. The refractive index of the high refractive index layer is greater than or equal to 1.9, and 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 100 nm to 800 nm. An example of a high-low refractive index stack is the transparent nanofilm in CN104267498A. A metal stack comprises at least two dielectric layers and at least one metal layer, each metal layer located between two adjacent dielectric layers. The physical thickness of the metal stack is 100 nm to 500 nm. An example of a metal stack is 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 projected light is incident on the display area 103 at a 70° incident angle, the display area 103 has a reflectivity of greater than or equal to 15% for P-polarized light incident at a 70° incident angle. This enhances the brightness of the black border display, improves the energy utilization rate of the projection device 110, and further reduces the energy consumption of the projection device 110, which is beneficial for the miniaturization and heat dissipation design of the projection device 110. Preferably, the display area 103 has a reflectivity of greater than or equal to 20% for P-polarized light incident at a 70° incident angle; or, the display area 103 has a reflectivity of greater than or equal to 30% for P-polarized light incident at a 70° incident angle; or, the display area 103 has a reflectivity of greater than or equal to 40% for P-polarized light incident at a 70° incident angle.

[0081] Specifically, when the projected 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 for S-polarized light to that for P-polarized light is ≤2. This reduces the interference of stray light inside the vehicle on the projected image, thereby further improving the clarity of the projected image. Preferably, the ratio K can also be ≤1.5, ≤1.0, ≤0.8, or ≤0.6.

[0082] In this embodiment, the top of the reflective layer 30 is not located within the light-transmitting area 101, thereby avoiding interference with the driver's or passenger's field of vision. In some embodiments, the top of the reflective layer 30 is located only within the bottom shielding area 1021, that is, the reflective layer 30 only covers the display area 103 within the bottom shielding area 1021 and at most completely covers the bottom shielding area 1021. The reflective layer 30 and the light-transmitting area 101 are spaced apart, and along the thickness direction of the black-edged display glass 100, the orthographic projection of the reflective layer 30 and the light-transmitting area 101 are misaligned and have no overlapping portion. 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 within the top shielding area 1022, that is, the reflective layer 30 simultaneously covers 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, due to the thickness of the reflective layer 30, when it is sandwiched between the inner glass plate 20 and the outer glass plate 10, a height difference will be formed at the boundary of the reflective layer 30, which will cause optical distortion at the boundary and thus interfere with the driver's and passengers' vision. In this embodiment, by setting the top of the reflective layer 30 not to be located within the light-transmitting area 101, the optically defective area can be hidden within the bottom shielding area 1021 or the top shielding area 1022, thus avoiding interference with the driver's and passengers' vision.

[0085] Please continue reading. Figure 2 and Figure 5 In this embodiment, the reflective layer 30 is disposed within the adhesive layer 1. The adhesive layer 1 includes multiple 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 a first adhesive layer 40 and a second adhesive layer 50, which are stacked along the thickness direction of the black-edge 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, which can prevent the position of the reflective layer 30 from shifting.

[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 disposed opposite to each other along the thickness direction of the first adhesive layer 40. When the black-edged display glass 100 is installed in a vehicle, along the height direction of the black-edged display glass 100, the first adhesive layer 40 includes a first segment 43 and a second segment 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 panel 20. The first segment 43 covers at least the display area 103, and the second segment 44 covers at least the light-transmitting area 101.

[0087] When the black-edged display glass 100 is installed on the vehicle 300, the first segment 43, along the height direction of the black-edged display glass 100, has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom. The first segment 43 has a first wedge angle δ at least in the display area 103. 1p That is, the first segment 43 can have a first wedge angle δ only in the display area 103. 1p Furthermore, other areas are not restricted, and the entire first segment 43 can also have a first wedge angle δ. 1p 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. For example, 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 edge dimension of the wedge structure, T2 is the top edge dimension of the wedge structure, H is the distance from the bottom edge to the top edge of the wedge structure, and δ is the wedge angle of the wedge structure. The wedge angle δ = arctan((T2-T1) / H). The wedge angle reflects the thickness gradient of the wedge structure. When δ is positive, the thickness of the wedge structure increases from the bottom to the top. Conversely, when δ is negative, the thickness of the wedge sheet decreases from the bottom to the top.

[0089] In this embodiment, the first wedge angle δ 1p It is a constant value. Since the height range of the display area 103 (i.e., along the Y direction) is typically short, such as 50mm to 300mm, this application uses the first wedge angle δ... 1p Setting it to a constant value can reduce the manufacturing difficulty of the first adhesive layer 40 and ensure the first wedge angle δ 1p The accuracy, and the reduction of the first wedge angle δ 1pProduction costs. In other embodiments, along the positive Y-axis, the first wedge angle δ 1p It can also be a continuous change, such as gradually increasing, gradually decreasing, increasing first and then decreasing, or decreasing first and then increasing, etc. This application does not address the wedge angle δ. 1p Specific restrictions are imposed on the trend of change.

[0090] In some embodiments, when the black-bordered display glass 100 is installed on the vehicle 300, the second segment 44 has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-bordered display glass 100, 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 It can be equal to the first wedge angle δ 1p This is beneficial for the production of the first adhesive layer 40. Alternatively, the second wedge angle δ 2a It can be less than the first wedge angle δ 1p This helps control the overall thickness of the black-bordered display glass 100. Alternatively, along the positive Y-axis, the second wedge angle δ 2a The thickness decreases continuously. That is, along the positive Y-axis, the increase in thickness of the second segment 44 gradually decreases, thus preventing the first adhesive layer 40 located in the light-transmitting area 101 from becoming too thick. The second wedge angle δ... 2a It decreases continuously, and the second wedge angle δ 2a The rate of change |ROC| ≤ 0.3 mrad / 100 mm is used to reduce the manufacturing difficulty of the first adhesive layer 40 and lower production costs. Preferably, the second wedge angle δ 2a The rate of change |ROC| ≤ 0.2 mrad / 100 mm. More preferably, the second wedge angle δ 2a The rate of change, |ROC|, is ≤0.1 mrad / 100 mm. The rate of change (ROC) is the ratio of the difference between the wedge angles at any two locations to the distance between those two locations. A positive ROC indicates an increase in the wedge angle, a negative ROC indicates a decrease in the wedge angle, and a ROC of 0 indicates that the wedge angle remains constant.

[0091] In one embodiment, the second segment 44 may also have an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and have a second wedge angle δ. 2a The second wedge angle δ 2a The absolute value is less than or equal to the first wedge angle δ 1p The second segment of the anti-wedge structure has a second wedge angle δ of 44. 2a The setting can refer to the second wedge angle δ of the second segment 44 of the above-mentioned positive wedge structure.2a The settings will not be described again in this application.

[0092] In this embodiment, the inner glass plate 20 has a uniform thickness, 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 rectangular. It can be understood that the first included angle δ1 between the reflective layer 30 and the fourth surface 21 is entirely provided by the first adhesive layer 40, i.e., the first included 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-edged display glass 100 is installed in a vehicle, along the height direction of the black-edged display glass 100, the second adhesive layer 50 includes a third segment 53 and a fourth segment 54 connected in sequence. The second adhesive layer 50 is disposed 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 segment 53 at least covers the display area 103, and the fourth segment 54 at least covers the light-transmitting area 101.

[0094] In some embodiments, the reflective layer 30 is only disposed within 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 within 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. 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 bonded and fixed to the third adhesive surface 51 and the first adhesive surface 41, respectively.

[0096] In some 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, whether in the display area 103 or 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-edged display glass 100 is installed on the vehicle 300, along the height direction of the black-edged display glass 100, the reflective layer 30 is located between the first segment 43 and the third segment 53. The third segment 53 has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a third wedge angle δ. 2p By utilizing the interaction between the third segment 53 of the anti-wedge structure and the first segment 43 of the positive wedge structure to cancel each other out, the total wedge angle of the display area 103 can be reduced, which is beneficial for controlling the total thickness of the display area 103 and for the production of the black-edge display glass 100. Specifically, the first wedge angle δ of the first segment 43... 1p The third wedge angle δ of the third segment 53 2p The absolute value of the sum is less than or equal to 0.50 mrad. Furthermore, 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, which is the first wedge angle δ. 1p Equal to the third wedge angle δ 2p The absolute value of . Preferably, the first wedge angle δ 1p Greater than the third wedge angle δ 2p The absolute value of δ makes the display area 103 have a positive wedge shape, which is beneficial to the production of the black-edge display glass 100. 2p The setting can be referenced from the first wedge angle δ mentioned above. 1p The settings will not be described again in this application.

[0098] In some embodiments, the fourth segment 54 has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a fourth wedge angle δ. 2b The second segment 44 has a wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a second wedge angle δ. 2a The fourth wedge angle δ 2b The absolute value is less than or equal to the second wedge angle δ 2a In other embodiments, the fourth segment 54 has a wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a fourth wedge angle δ. 2bThe second segment 44 has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a second wedge angle δ. 2a The second wedge angle δ 2a The absolute value is less than or equal to the fourth wedge angle δ. 2b By utilizing the complementary structures of the second segment 44 and the fourth segment 54, the total wedge angle of the light-transmitting area 101 can be reduced, which is beneficial for controlling the total thickness of the light-transmitting area 101 and for the production of the black-edge display glass 100. Specifically, 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 0.50 mrad and greater than or equal to 0, ensuring that the light-transmitting area 101 has a rectangular or wedge-shaped structure. This helps to reduce or even eliminate transmission ghosting in the light-transmitting area 101 and facilitates the production of the black-edge display glass 100. It can even enable W-HUD or AR-HUD in the light-transmitting area 101, with a projection distance of 2 to 5 meters for W-HUD and a projection distance greater than 5 meters for AR-HUD. Furthermore, 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 0.40 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 of these values ​​equals 0, meaning that the light-transmitting area 101 has a rectangular structure.

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

[0100] The first adhesive layer 40 is made of one or more of the following materials: polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), and ionomer film (SuperSafeGlasSGP). The minimum thickness of the first adhesive layer 40 is less than or equal to 0.76 mm, which reduces the distance between the reflective surface 31 and the fourth surface 21, thereby reducing the first included angle δ1 between them, and consequently reducing the first wedge angle δ of the first segment 43 of the first adhesive layer 40. 1p This further reduces the manufacturing difficulty of the first adhesive layer 40 and lowers the height difference formed at the top boundary of the reflective layer 30, thereby weakening or even eliminating optical distortion 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 to improve the bonding strength between the second adhesive layer 50 and the first adhesive layer 40, and to ensure the consistency between the first adhesive layer 40 and the second adhesive layer 50. This also reduces the manufacturing cost of the black-edge display glass 100. In other embodiments, the material of the second adhesive layer 50 can be different from that of the first adhesive layer 40.

[0102] The minimum thickness of the second adhesive layer 50 is greater than or equal to 0.38 mm, which ensures the overall strength of the black-edge 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. To control the total thickness of the black-edge display glass 100 and achieve weight reduction, the sum of the maximum thickness of the first adhesive layer 40 and the maximum thickness of the second adhesive layer 50 is preferably less than or equal to 1.6 mm, that is, the maximum thickness of adhesive layer 1 is less than or equal to 1.6 mm.

[0103] In some embodiments, the ratio between the minimum thickness of the second adhesive layer 50 and the minimum thickness of the first adhesive layer 40 is greater than or equal to 3.8; or, the ratio between the minimum thickness of the second adhesive layer 50 and the minimum thickness of the first adhesive layer 40 is greater than or equal to 7.6; or, the ratio between the minimum thickness of the second adhesive layer 50 and the minimum thickness of the first adhesive layer 40 is greater than or equal to 10.1; or, the ratio between the minimum thickness of the second adhesive layer 50 and 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-border display glass 100 also 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-border display glass 100, the orthogonal projection of the shielding layer 60 completely covers the reflective layer 30. The shielding layer 60 can block the reflective layer 30 along the thickness direction of the black-border display glass 100, allowing the shielding layer 60 to serve as a display background for the projected image. This better blocks ambient light, avoids unnecessary interference with the viewing experience, and also improves the contrast between the projected image and the display background, making the image display 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-edged 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 within the second adhesive layer 50.

[0106] In one embodiment, there may be multiple shielding layers 60. The shielding layer 60 is provided at any two or more of the following locations: 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, within 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 material of the shielding layer 60 is black ceramic ink, thereby forming a uniform black throughout the shielding area 102 to improve the color consistency of the shielding area 102. Viewed from the outside of the vehicle body 210, the black-edged display glass 100 is uniformly black around its perimeter, forming the black-edged area of ​​the black-edged 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 body coloring, a polymer film with surface-printed ink, paint or pigment, 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%, or 0%. Furthermore, the maximum visible light transmittance of the dimming film can be set as needed, for example, 10%, 20%, 30%, 50%, 70%, or 80%. For example, when a black border display is required, the dimming film is in an opaque state, at which point the visible light transmittance is less than or equal to 5%, or even 0%, to improve the contrast between the projected image and the display background. When the display area 103 is not displaying, the dimming film is in a transparent state, at which point the visible light transmittance is greater than or equal to 70%, thereby giving the black border display glass 100 a larger transparent area.

[0111] Please see Figures 7 to 10 In the diagram, the horizontal axis represents the distance to the bottom edge of the black-bordered display glass 100, in millimeters (mm); the vertical axis represents the wedge angle, in mrad. Along the height of the black-bordered display glass 100, from its bottom edge to its top edge, the areas of the black-bordered display glass 100 are, in sequence, a bottom-shading area 1021, a light-transmitting area 101, and a top-shading area 1022. The bottom-shading area 1021 includes a non-display area 104 and a 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, in sequence, a non-display area 104, a display area 103, a light-transmitting area 101, and a top-shading area 1022.

[0112] Among them, curve W innerThe curve W represents the wedge angle variation curve between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20. outer The curve W represents the wedge angle variation curve between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10. effective The curve showing the wedge angle variation 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-transmitting area 101 and the top shading area 1022.

[0113] It should be noted that the curve W of the non-display area 104 is set. inner And curve W outer This facilitates production, controls the overall thickness, or allows for a smoother transition from the non-display area 104 to the display area 103, by setting the curve W of the display area 103. inner The deviation angle between the reflected secondary image and the projected image can be reduced to weaken or even eliminate visual reflection ghosting of the projected image at the black border. The curve W of the display area 103 can be set accordingly. outer This facilitates production, controls the overall thickness, and allows for a smoother transition from the non-display area 104 to the display area 103, or from the display area 103 to the light-transmitting area 101. The curve W of the light-transmitting area 101 is also set. inner Curve W outer And curve W effective It facilitates production and manufacturing, controls the overall thickness, facilitates the transition from the display area 103 to the light-transmitting area 101, facilitates the transition from the light-transmitting area 101 to the top shielding area 1022, reduces or even eliminates transmission ghosting in the light-transmitting area 101, or enables W-HUD or AR-HUD in the light-transmitting area 101, and sets the curve W of the top shielding area 1022. inner Curve W outer And curve W effective It can facilitate production, control the total thickness, or facilitate the transition from the light-transmitting area 101 to the top shading area 1022.

[0114] Specifically, the angle between the first adhesive surface 41 of the first adhesive 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 adhesive layer 40 alone, in which case the inner glass plate 20 has a rectangular structure; it can also be provided by the inner glass plate 20 alone, in which case the first adhesive layer 40 has a rectangular structure; or it can be provided by both the first adhesive layer 40 and the inner glass plate 20, in which case both the first adhesive layer 40 and the inner glass plate 20 have a wedge-shaped structure.

[0115] Specifically, the angle between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10 is less than or equal to 0. It can be provided by the second adhesive layer 50 alone, in which case the outer glass plate 10 has a rectangular structure; it can also be provided by the outer glass plate 10 alone, in which case the second adhesive layer 50 has a rectangular structure; or it can be provided by both the second adhesive layer 50 and the outer glass plate 10, in which case both the second adhesive 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 and the fourth surface 21 of the inner glass plate 20 in the light-transmitting area 101 and the top shielding area 1022 is greater than or equal to 0, and it 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 between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 remains constant from the bottom edge to the top edge of the black-border display glass 100. Similarly, the angles between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 in the non-display area 104, display area 103, light-transmitting area 101, and top shielding area 1022 are equal and constant. (Curve W) outer The angle between the bottom and top edges of the black-bordered display glass 100 remains constant, meaning the angle between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10 is constant from the bottom to the top edge of the black-bordered display glass 100. Similarly, the angles between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10 in the non-display area 104, display area 103, light-transmitting area 101, and top shielding area 1022 are equal and constant. Furthermore, the angle between the first adhesive surface 41 of the first adhesive 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 sub-image deviation angle between the reflected sub-image and the projected image to weaken or even eliminate visual reflection ghosting of the black-bordered projected image.

[0118] The angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 is positive, that is, a positive wedge structure with a thicker upper surface and a thinner lower surface is formed between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20. The angle between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10 is negative, that is, a reverse wedge structure with a thinner upper surface and a thicker lower surface is formed between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10. The angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10, which helps to eliminate the transmission ghosting in the light-transmitting area 101. In some other embodiments, the angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 is equal to the angle between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10, so that the black-edge display glass 100 has a rectangular structure as a whole, which is beneficial to production.

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

[0120] Among them, the curve W of the light-transmitting area 101 inner Curve W of the light-transmitting area 101 outerThe curve W, symmetrical to each other along the horizontal axis, represents the top shading area 1022. inner Curve W of the top shading area 1022 outer Symmetrical to each other along the horizontal axis, such that curve W effective The angle is kept constant at 0, meaning that the angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive 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. This makes the black-edge display glass 100 have a rectangular structure in the light-transmitting area 101 and the top shielding area 1022, which is beneficial for controlling the total thickness of the light-transmitting area 101 and the top shielding area 1022 and for the production of the black-edge display glass 100.

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

[0122] Among them, the curves W of the light-transmitting area 101 and the top shading area 1022 effectiveThe angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive 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. This makes the black-edge display glass 100 have a positive wedge-shaped structure in the light-transmitting area 101 and the top shielding area 1022, which can reduce or even eliminate the transmission ghosting in the light-transmitting area 101, thereby improving the clarity of the external view and enhancing the driving safety of the occupants. In other words, the black-edge 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 Figure 10 As shown, curve W inner Only within the display area 103 remains constant; that is, the angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 remains unchanged only within the display area 103, as represented by the solid line between a2 and a3; curve W inner The non-display area 104 is not specifically defined; that is, it is represented by a dashed line between a1 and a2, and the curve W... inner The wedge angle in the non-display area 104 can be constant or continuously variable; curve W inner The wedge angle in the light-transmitting area 101 continuously decreases, as indicated by the solid line between a3 and e1; curve W inner The wedge angle in the top shading area 1022 decreases continuously and eventually equals 0, as represented by the solid line between e1 and e2. Curve W outer The wedge angles of display area 103 and non-display area 104 are not specifically defined, that is, they are represented by dashed lines between a1 and a3, and curve W outer The wedge angle between the display area 103 and the non-display area 104 can be constant or continuously variable; curve W outer The absolute value of the wedge angle in the light-transmitting area 101 continuously decreases to 0 and remains constant until the top shading area 1022, as represented by the solid line between a3 and e1; curve W outer The wedge angle in the top shading area 1022 is constant at 0, as indicated by the solid line between e1 and e2.

[0124] Among them, the curve W of the light-transmitting area 101 effectiveThe angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10. This makes the black-edge display glass 100 have a positive wedge-shaped structure in the light-transmitting area 101, which can reduce or even eliminate the transmission ghosting in the light-transmitting area 101, thereby improving the clarity of the external view and enhancing the driving safety of the occupants. In other words, the black-edge 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 A value greater than 0 and continuously decreasing is beneficial for controlling the total thickness of the top shading area 1022 and for the production of the black-edged display glass 100.

[0125] Please see Figure 11 In this embodiment, the black-bordered display glass 100 also includes a camera window area 105. A portion of the top shielding area 1022 surrounds the outer periphery of the camera window area 105. For example, a portion of the shielding layer 60 can be removed from the top shielding area 1022 to form the camera window area 105. The camera window area 105 is positioned opposite to a camera installed inside the vehicle. The camera can collect data from 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, the areas of the black-bordered display glass 100 are, in sequence, 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, the areas of the black-bordered display glass 100 are, in sequence, 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-edged 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-edged display glass 100 in the camera window area 105 has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom. The included angle between the first surface 12 of the outer glass plate 10 and the fourth surface 21 of the inner glass plate 20 of 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 greater than or equal to 0.1 mrad, or preferably greater than or equal to 0.15 mrad, or preferably greater than or equal to 0.2 mrad, or preferably greater than or equal to 0.25 mrad, or preferably 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 refer to the following: Figure 12 curve W inner Only within the display area 103 remains constant; that is, the angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 remains unchanged only within the display area 103, as represented by the solid line between a2 and a3; curve W inner The non-display area 104 is not specifically defined; that is, it is represented by a dashed line between a1 and a2, and the curve W... inner The wedge angle in the non-display area 104 can be constant or continuously variable; curve W inner The wedge angle in the light-transmitting area 101 continuously decreases, as indicated by the solid line between a3 and a4; curve W inner The wedge angle in the camera window area 105 continuously decreases, as indicated by the solid line between a4 and e1; curve W inner The wedge angle in the top shading area 1022 decreases continuously and eventually exceeds 0, as represented by the solid line between e1 and e2. Curve W outer The wedge angles of display area 103 and non-display area 104 are not specifically defined, that is, they are represented by dashed lines between a1 and a3, and curve W outer The wedge angle between the display area 103 and the non-display area 104 can be constant or continuously variable; curve W outer The absolute value of the wedge angle in the light-transmitting region 101 continuously decreases, as represented by the solid line between a3 and a4; curve W outer The absolute value of the wedge angle in the camera window area 105 continuously decreases, as represented by the solid line between a4 and e1; curve W outer The absolute value of the wedge angle in the top shading area 1022 decreases continuously and eventually becomes greater than 0, as indicated by the solid line between e1 and e2.

[0128] Among them, curve W effective In the light-transmitting area 101, camera window area 105, and top shielding area 1022, the angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 is greater than the angle between the third adhesive surface 51 of the second adhesive layer 50 and the first surface 12 of the outer glass plate 10. This makes the black-edge display glass 100 have a positive wedge-shaped structure in the light-transmitting area 101, camera window area 105, and top shielding area 1022, 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 A value greater than 0 and remaining constant is beneficial for controlling the total thickness of the top shading area 1022 and for the production of the black-edged display glass 100.

[0129] Please refer to the following: Figure 13 curve W inner Only within the display area 103 remains constant; that is, the angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 remains unchanged only within the display area 103, as represented by the solid line between a2 and a3; curve W inner The non-display area 104 is not specifically defined; that is, it is represented by a dashed line between a1 and a2, and the curve W... inner The wedge angle in the non-display area 104 can be constant or continuously variable; curve W inner The wedge angle in the light-transmitting area 101 continuously decreases, as indicated by the solid line between a3 and a4; curve W inner The wedge angle in the camera window area 105 continuously decreases, as indicated by the solid line between a4 and e1; curve W inner The wedge angle in the top shading area 1022 decreases continuously and eventually exceeds 0, as represented by the solid line between e1 and e2. Curve W outer The wedge angles of display area 103 and non-display area 104 are not specifically defined, that is, they are represented by dashed lines between a1 and a3, and curve W outer The wedge angle between the display area 103 and the non-display area 104 can be constant or continuously variable; curve W outer The absolute value of the wedge angle in the light-transmitting region 101 continuously decreases, as represented by the solid line between a3 and a4; curve W outer The absolute value of the wedge angle in the camera window area 105 continuously decreases, as represented by the solid line between a4 and e1; curve W outerThe absolute value of the wedge angle in the top shading area 1022 continuously decreases to 0, as indicated by the solid line between e1 and e2.

[0130] Among them, the curve W of the light-transmitting area 101 effective The angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10. This makes the black-edge display glass 100 have a positive wedge-shaped structure in the light-transmitting area 101, which can reduce or even eliminate the transmission ghosting in the light-transmitting area 101, thereby improving the clarity of the external view and enhancing the driving safety of the occupants. In other words, the black-edge 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 The angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10. This makes the black-edge display glass 100 have a positive wedge-shaped 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 shading area 1022... effective A value greater than 0 and remaining constant is beneficial for controlling the total thickness of the top shading area 1022 and for the production of the black-edged display glass 100.

[0131] Please see Figure 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, realizing W-HUD or AR-HUD, so that the driver can see this information without looking down or turning their head, improving driving safety. Specifically, the head-up display area 1011 is located within the light-transmitting area 101. When the black-edged display glass 100 is installed in the vehicle 300, along the height direction of the black-edged display glass 100, the head-up display area 1011 has a wedge-shaped structure that is thicker at the top and thinner at the bottom. The angle between the fourth surface 21 and the first surface 12 within the head-up display area 1011 is smaller than the first angle between the reflective surface 31 and the fourth surface 21.

[0132] Please refer to the following: Figure 15 curve W innerOnly within the display area 103 remains constant; that is, the angle between the first adhesive surface 41 of the first adhesive layer 40 and the fourth surface 21 of the inner glass plate 20 remains unchanged only within the display area 103, as represented by the solid line between a2 and a3; curve W inner The non-display area 104 is not specifically defined; that is, it is represented by a dashed line between a1 and a2, and the curve W... inner The wedge angle in the non-display area 104 can be constant or continuously variable; curve W inner The wedge angle in the light-transmitting area 101 continuously decreases, as indicated by the solid line between a3 and a4; curve W inner The wedge angle in the camera window area 105 continuously decreases, as indicated by the solid line between a4 and e1; curve W inner The wedge angle in the top shading area 1022 decreases continuously and eventually exceeds 0, as represented by the solid line between e1 and e2. Curve W outer The wedge angles of display area 103 and non-display area 104 are not specifically defined, that is, they are represented by dashed lines between a1 and a3, and curve W outer The wedge angle between the display area 103 and the non-display area 104 can be constant or continuously variable; curve W outer The absolute value of the wedge angle in the light-transmitting region 101 continuously decreases, as represented by the solid line between a3 and a4; curve W outer The absolute value of the wedge angle in the camera window area 105 continuously decreases, as represented by the solid line between a4 and e1; curve W outer The absolute value of the wedge angle in the top shading area 1022 continuously decreases to 0, as indicated by the solid line between e1 and e2.

[0133] Among them, the curve W of the light-transmitting area 101 effective The angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10. This makes the black-edge display glass 100 have a positive wedge-shaped structure in the light-transmitting area 101, which can reduce or even eliminate 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... effectiveThe angle between the first adhesive surface 41 of the first adhesive 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 adhesive surface 51 of the second adhesive layer 50 in the light-transmitting area 101 and the first surface 12 of the outer glass plate 10. This makes the black-edge display glass 100 have a positive wedge-shaped 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 shading area 1022... effective A value greater than 0 and continuously decreasing is beneficial for controlling the total thickness of the top shading area 1022 and for the production of the black-edged display glass 100.

[0134] Please see Figure 16 In this embodiment, when the black-edged display glass 100 is installed on the vehicle 300, the inner glass plate 20 has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass 100. The inner glass plate 20 has a wedge angle δ4, which is greater than 0. Along the direction from the bottom edge to the top edge of the black-edged display glass 100, that is, along the positive Y-axis, the thickness of the inner glass plate 20 gradually increases. The wedge angle δ4 of the inner glass plate 20 can be a constant value or a continuously varying value. When the wedge angle δ4 of the inner glass plate 20 is a continuously varying value, along the positive Y-axis, the wedge angle δ4 of the inner glass plate 20 can monotonically increase, monotonically decrease, or decrease first and then increase.

[0135] In this embodiment, the first segment 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, that is, δ1 = δ4 + δ 1p In this embodiment, by setting both the inner glass plate 20 and the first segment 43 of the first adhesive layer 40 into a positive wedge shape, the reflective surface 31 and the fourth surface 21 of the inner glass plate 20 form a first angle, thereby reducing the secondary image deviation angle between the reflected secondary image and the projected image. This allows the reflected secondary image and the projected image to approach or even overlap each other, weakening or even eliminating visual reflection ghosting of the projected image and improving the clarity of the projected image. Furthermore, in this embodiment, by setting the inner glass plate 20 into a positive wedge shape, the first wedge angle δ of the first adhesive layer 40 can be reduced. 1p This reduces the manufacturing difficulty of the first adhesive layer 40.

[0136] In one embodiment, the thickness of the first segment 43 of the first adhesive layer 40 can also be uniform, that is, the first wedge angle δ 1pThe value is 0. At this time, the reflective surface 31 is arranged parallel to the third surface 22 of the inner glass plate 20. The first included angle δ1 between the reflective surface 31 and the fourth surface 21 of the reflective layer 30 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 as a positive wedge structure, it is not necessary to set a wedge angle on the first adhesive layer 40, thereby simplifying the structure of the black-edge display glass 100 and reducing the manufacturing difficulty of the black-edge display glass 100.

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

[0138] In this embodiment, the outer glass plate 10 has a rectangular structure with uniform thickness, the inner glass plate 20 located in the light-transmitting area 101 has a wedge angle δ4, and the second segment 44 of the first adhesive layer 40 has a second wedge angle δ. 2a The fourth segment 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 Less than 0. At this time, the angle δ2 between the fourth surface 21 and the first surface 12 within the light-transmitting area 101 is δ4 + δ 2a +δ 2b That is, δ2 = δ4 + δ 2a -|δ 2b In this embodiment, by setting the fourth segment 54 of the second adhesive layer 50 as an anti-wedge structure, it can partially offset the wedge angle of the first adhesive layer 40 and the wedge angle of the inner glass plate 20, thereby reducing the size of the wedge angle of the black-edge display glass 100 located in the light-transmitting area 101, and avoiding the difficulty in manufacturing the black-edge display glass 100 and the high cost caused by the excessively large wedge angle of the light-transmitting area 101.

[0139] Please see Figure 17 In this embodiment, when the black-edged display glass 100 is installed on the vehicle 300, along the height direction of the black-edged display glass 100, the outer glass plate 10 has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a wedge angle δ5. The wedge angle δ5 of the outer glass plate 10 is less than 0. Furthermore, along the direction from the bottom edge to the top edge of the black-edged display glass 100, that is, along the positive Y-axis direction, 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 varying value. When the wedge angle δ5 of the outer glass plate 10 is a continuously varying value, along the positive Y-axis direction, the absolute value of the wedge angle δ5 of the outer glass plate 10 can monotonically increase, monotonically decrease, or decrease first and then increase.

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

[0141] The second segment 44 of the first adhesive layer 40 has a second wedge angle δ. 2a The fourth segment 54 of the second adhesive layer 50 has a fourth wedge angle δ 2b The angle δ2 between the fourth surface 21 and the first surface 12 within the light-transmitting area 101 is equal to δ 2a +δ 2b +δ5, and δ 2a +δ 2b +δ5≥0. In some implementations, the second wedge angle δ 2a >0, fourth wedge angle δ 2b It can be greater than 0, then δ 2a +δ 2b -|δ5|≥0. In other embodiments, the second wedge angle δ 2a >0, fourth wedge angle δ 2b It can be equal to 0, then δ 2a -|δ5|≥0. In some embodiments, the second wedge angle δ 2a >0, fourth wedge angle δ 2b It 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, this requires a large wedge angle to be set in the first segment 43 of the first adhesive layer 40 in order to reduce or even eliminate the visual reflection ghosting of the display area 103. At the same time, because the display area 103 is very close to the light-transmitting area 101, it is difficult to drastically reduce the wedge angle of the first adhesive layer 40, resulting in a large wedge angle δ in the second segment 44 of the first adhesive layer 40 in the light-transmitting area 101. 2aThe angle of the light-transmitting area 101 is also relatively large. However, if the wedge angle of the light-transmitting area 101 is too large, it will cause severe transmission ghosting in 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. This application sets the outer glass plate 10 as an anti-wedge structure and / or sets the second adhesive layer 50 as an anti-wedge structure, which can partially cancel out 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 and causing obvious transmission ghosting, thereby improving the visual clarity of the light-transmitting area 101 and improving driving safety.

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

[0144] In this embodiment, the heat insulation layer 80 is disposed between the inner glass plate 20 and the first adhesive layer 40. In other embodiments, the heat insulation layer 80 may also be disposed on the fourth surface 21 or the first surface 12. Alternatively, the heat insulation layer 80 may also be disposed between the outer glass plate 10 and the second adhesive layer 50. Alternatively, the heat insulation layer 80 may also be disposed within the adhesive layer. Alternatively, the heat insulation 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-edged display glass 100 with the heat insulation layer 80 is less than or equal to 55%, preferably less than or equal to 50%, and even less than or equal to 45%. The lower the total solar transmittance, the better the heat insulation performance of the black-edged display glass 100.

[0146] The material of the heat insulation layer 80 can be one or more of the following: 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 micron coating.

[0147] Please see Figure 19 In this embodiment, the black-edge 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-edge 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 only cover the light-transmitting area 101, or partially cover the light-transmitting area 101. For example, the electric heating element 70 covers the display area 103 and the wiper docking 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 penta-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 mesh, or a graphene heating element. The electric heating element 70 enables the black-edged display glass 100 to have a power of at least 400 W / m. 2 The heating power density. 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. At least two busbars 72 include a first busbar 721 and a second busbar 722. In this embodiment, the first busbar 721 is disposed within the bottom shielding area 1021, and the second busbar 722 is disposed within the top shielding area 1022. Along the thickness direction of the black-edge display glass 100, the orthographic projection of the first busbar 721 is located within the shielding layer 60 of the bottom shielding area 102, and the orthographic projection of the second busbar 722 is located within the shielding layer 60 of the top shielding area 1022. The shielding layer 60 shields the busbars 72, preventing them from being seen from outside the vehicle, thereby improving the uniformity of the appearance of the black-edge display glass 100.

[0150] One of the first busbar 721 and the second busbar 722, 72, is electrically connected to the positive terminal of the power supply (not shown), and the other busbar 72 is electrically connected to the negative terminal of the power supply (not shown). Current from the power supply is input to the heating layer 71 through at least two busbars 72, causing the heating layer 71 to heat up. This heats the black-bordered display glass 100 to achieve defogging and defrosting functions, thereby preventing fog from interfering with the projected image and the driver's field of vision, and further improving driving safety.

[0151] In this embodiment, the black-border 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-border 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 acts as a shield for the first busbar 721, preventing it from being seen from inside the vehicle, and also 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. They can better block external ambient light, avoid unnecessary interference to the line of sight, and also improve the contrast between the projected image and the display background, making the image display clearer.

[0153] In this embodiment, the black-edge display glass 100 further includes a second auxiliary shielding layer 82, which is disposed on the fourth surface 21 of the inner glass panel 20. Along the thickness direction of the black-edge 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, preventing the second busbar 722 from being seen from inside the vehicle, thereby improving the uniformity of the appearance of the black-edge 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 edge display glass 100, the orthogonal projection of the second auxiliary shielding layer 82 also covers the edge of the reflective layer 30 near the light-transmitting area 101, thereby shielding the edge of the reflective layer 30 from inside the vehicle and improving the overall aesthetics.

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

[0156] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A black-bordered display glass, characterized in that, The black-edged display glass includes a light-transmitting area and a shielding area. The visible light transmittance of the light-transmitting area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%. At least one display area is provided in the shielding area. The black-edged display glass includes an outer glass plate, an inner glass plate, an adhesive layer, and a reflective layer. The outer glass plate includes a first surface and a second surface arranged opposite to each other. The inner glass plate includes a third surface and a fourth surface arranged opposite to each other. The adhesive layer connects 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-edged display glass is installed in a vehicle, along the thickness direction of the black-edged 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 facing the inner glass plate. The first angle between the reflective surface and the fourth surface is greater than or equal to 0.3 mrad, or greater than or equal to 0.5 mrad, or 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 within 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, and 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.

5. The black-bordered display glass according to claim 4, characterized in that, When the black-edged display glass is installed in a vehicle, along the height direction of the black-edged display glass, the first adhesive layer includes a first segment and a second segment connected in sequence, the first segment covering the display area and the second segment at least covering the light-transmitting area; The first segment has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a first wedge angle.

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

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

8. The black-bordered display glass according to claim 7, characterized in that, The 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 segment has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a fourth wedge angle. The second segment has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a second wedge angle. The absolute value of the fourth wedge angle is less than or equal to the second wedge angle. Alternatively, the fourth segment has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom, and has a fourth wedge angle; the second segment has a negative wedge-shaped structure that is thinner at the top and thicker at the bottom, and has a second wedge angle; 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-edged display glass also includes a shielding layer, which is disposed between the outer glass panel and the reflective layer. The shielding layer covers the shielding area, which includes a top shielding area and a bottom shielding area. The top shielding area and the bottom shielding area are located on opposite sides of the light-transmitting area, and the display area is located within the bottom shielding area.

12. The black-bordered display glass according to claim 2, characterized in that, The black-edged display glass also includes a camera window area. When the black-edged display glass is installed in a vehicle, the camera window area has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass. The angle between the fourth surface and the first surface in the camera window area 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-edged display glass is installed in a vehicle, the head-up display area has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass. The angle between the fourth surface and the first surface in the head-up display area 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-edged display glass is installed in a vehicle, the light-transmitting area has a wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass. The angle between the fourth surface and the first surface in the light-transmitting area is smaller than the first angle between the reflective surface and the fourth surface.

15. The black-edged display glass according to claim 2, characterized in that, When the black-edged display glass is installed in a vehicle, the inner glass plate has a positive wedge-shaped structure that is thicker at the top and thinner at the bottom along the height direction of the black-edged display glass, 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-edged display glass is installed in a vehicle, the outer glass panel has an inverted wedge-shaped structure that is thinner at the top and thicker at the bottom along the height direction of the black-edged display glass.

17. The black-bordered display glass according to claim 1, characterized in that, The black-edged display glass also includes a heat insulation layer, which 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.

18. The black-bordered display glass according to claim 1, characterized in that, The black-edged display glass also includes a heating layer and at least two busbars, which 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.

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-insulating sublayer, wherein the hardness of the sound-insulating sublayer is less than that of the outer sublayer, and the sound-insulating 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 1-19, wherein the projection device is disposed on the side of the black border display glass near the fourth surface; the projection device is used to emit projection light, the projection light including at least 80% P-polarized light, and the reflective layer is used to reflect the projection light to form a projection image.

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