Black mask display glass, black mask display system, and vehicle

Abstract

A black mask display glass (10), a black mask display system (100), and a vehicle (1000). The black mask display glass (10) comprises an outer glass plate (14), a first adhesive layer (15), and an inner glass plate (16), wherein the outer glass plate (14) comprises a first surface (141) and a second surface (142) arranged opposite to each other, the inner glass plate (16) comprises a third surface (161) and a fourth surface (162) arranged opposite to each other, and the first adhesive layer (15) is connected between the second surface (142) and the third surface (161). The black mask display glass (10) has a transparent region (11) and a masking region (12), wherein the visible light transmittance of the transparent region (11) is greater than or equal to 70%, the visible light transmittance of the masking region (12) is less than or equal to 5%, and at least one display region (13) is provided in the masking region (12). The black mask display glass (10) further comprises a second adhesive layer (17) and a functional reflection layer (18), wherein the second adhesive layer (17) is at least partially located in the masking region (12) and is connected to the third surface (161), the functional reflection layer (18) is connected between the first adhesive layer (15) and the second adhesive layer (17), and the functional reflection layer (18) at least covers the display region (13).

Description

Black border display glass, black border display system and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202411091183.2, filed on August 9, 2024, entitled "Black border display glass, black border display system and vehicle", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of vehicle, in particular to a black border display glass, a black border display system and a vehicle. BACKGROUND

[0003] With the development of vehicle intelligentization, automation and networking technologies, vehicles can provide various information to the in-vehicle personnel, such as vehicle information, road information, social media information and even entertainment information, etc. Generally, head-up black border display system (HUD), instrument panel, center control screen, co-pilot display screen and their combinations can be used to achieve the display, meeting the display requirements of multi-form, far and near multi-level, so as to bring more comfortable, safe, intelligent experience and rich information to the driver and passenger.

[0004] For the display of the instrument panel, the center control screen, etc., the in-vehicle personnel needs to look down to observe, and the line of sight of the human eye will temporarily leave the road surface, thereby causing a driving safety hazard. For the traditional head-up display (HUD), the HUD image is displayed in the perspective area of the front windshield, and the environment outside the vehicle serves as the display background of the HUD image. The brightness of the environment outside the vehicle and other interfering light will affect the observation of the HUD image by the driver, thereby reducing the driving safety and visual comfort. SUMMARY

[0005] The purpose of the present application is to provide a black border display glass, a black border display system and a vehicle, which can avoid the influence of the brightness of the environment outside the vehicle and other interfering light on the observation of the HUD image by the driver, thereby improving the driving safety and visual comfort.

[0006] The embodiment of the present application provides a black border display glass, which comprises an outer glass plate, a first bonding layer and an inner glass plate, the outer glass plate comprises a first surface and a second surface arranged oppositely, the inner glass plate comprises a third surface and a fourth surface arranged oppositely, and the first bonding layer is connected between the second surface and the third surface. The black border display glass has a perspective area and a shielding area, the visible light transmittance of the perspective area is greater than or equal to 70%, the visible light transmittance of the shielding area is less than or equal to 5%, and at least one display area is arranged in the shielding area. The black border display glass further comprises a second bonding layer and a functional reflection layer, the second bonding layer is at least partially located in the shielding area and connected to the third surface, the functional reflection layer is connected between the first bonding layer and the second bonding layer, and the functional reflection layer at least covers the display area. The display area has a P light reflectance Rp for P polarized light with a wavelength of 380 nm-780 nm at an incident angle of 69°, and the P light reflectance Rp is greater than or equal to 20%.

[0007] In an embodiment, the shielding area comprises a bottom shielding area located below the perspective area, and the display area is located in the bottom shielding area. The ratio of the total area of the display area to the area of the bottom shielding area is 10%-110%, or 15%-105%, or 20%-100%, or 30%-95%, or 40%-90%.

[0008] In an embodiment, the black border display glass further comprises a shielding layer, the shielding layer is arranged in the shielding area, the shielding layer is located between the outer glass plate and the functional reflection layer, and the material of the shielding layer is selected from at least one of a dark ink, an opaque polymer film and a light control film.

[0009] In an embodiment, the shielding layer in the bottom shielding area is composed of a first shielding sublayer and a second shielding sublayer, the material of the first shielding sublayer is a dark ink, and the material of the second shielding sublayer is an opaque polymer film or a light control film.

[0010] In an embodiment, the thickness of the second bonding layer is less than the thickness of the first bonding layer, the ratio of the thickness of the first bonding layer to the thickness of the second bonding layer is greater than or equal to 2 and less than or equal to 100.

[0011] In an embodiment, the thickness of the second bonding layer is less than or equal to 0.38 mm, and the second bonding layer has a wedge-shaped cross-sectional profile, and the wedge angle of the wedge-shaped cross-sectional profile is 0.05 mrad-0.6 mrad.

[0012] In an embodiment, the sum of the thickness of the second bonding layer and the thickness of the inner glass plate is less than or equal to 1.38 mm.

[0013] In one embodiment, the material of the second bonding layer is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyurethane, ionic polymer, OCA optical glue, LOCA optical glue, and OCR optical clear resin.

[0014] In one embodiment, the bonding force between the second bonding layer and the inner glass plate is greater than or equal to 1 MPa, the visible light transmittance of the second bonding layer is greater than or equal to 85%, and the haze of the second bonding layer is less than or equal to 1%.

[0015] In one embodiment, the functional reflective layer is a P-polarized light reflective layer, and the material of the P-polarized light reflective layer is selected from one of a high-low refractive index stack, a metal stack, and a stacked polymer film.

[0016] In one embodiment, the ratio of the area of the fourth surface to the area of the functional reflective layer is greater than or equal to 3 and less than or equal to 20.

[0017] In one embodiment, the area of the second bonding layer is greater than or equal to the area of the functional reflective layer and less than or equal to the area of the third surface.

[0018] In one embodiment, the black border display glass further comprises a protective layer located at least in the shielding area and connected to the fourth surface. The protective layer comprises an anti-fog coating, an anti-fingerprint coating, an anti-glare film, an anti-reflection coating, or an S-light polarizer. When the protective layer is an anti-reflection coating, the anti-reflection coating is a high-low refractive index stack, the high-low refractive index stack comprises a plurality of high refractive index layers and a plurality of low refractive index layers, and the plurality of high refractive index layers and the plurality of low refractive index layers are arranged alternately. Alternatively, the anti-reflection coating is a porous silica coating.

[0019] In one embodiment, the black border display glass further comprises a third bonding layer located between the first bonding layer and the second bonding layer and connected to the side surface of the functional reflective layer. The thickness of the third bonding layer is equal to the thickness of the functional reflective layer, and the sum of the area of the third bonding layer and the area of the functional reflective layer is equal to the area of the first bonding layer.

[0020] In one embodiment, the black border display glass further comprises a heat insulation layer arranged on the second surface, the third surface, the fourth surface, or embedded in the first bonding layer. The heat insulation layer is selected from at least one of a single silver nano coating, a double silver nano coating, a triple silver nano coating, a quadruple silver nano coating, an ITO nano coating, an FTO nano coating, and an infrared blocking micron coating, and the total solar energy transmittance of the black border display glass with the heat insulation layer is less than or equal to 55%.

[0021] In one embodiment, the black border display glass further comprises an electric heating element and at least two busbars, the busbars are electrically connected with the electric heating element, the electric heating element is disposed on the second surface, the third surface, the fourth surface or embedded in the first bonding layer. The electric heating element is 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 quintuple silver electric heating coating, a TCO electric heating coating, a metal wire, a printed silver paste line, a nano silver line, a carbon fiber wire, a metal mesh or a graphene heating sheet, the electric heating element can make the black border display glass have a heating power density of at least 400 W / m 2 .

[0022] The embodiment of the present application provides a black border display system, the black border display system comprises a projection device and the black border display glass, the projection device is towards the inner glass plate, the projection device is used for emitting projection light with a wavelength of 380nm-780nm, the projection light contains at least 80% P polarized light, and the projection light is incident to the display area at an incident angle of 65°-75°. The projection light is reflected by the inner glass plate to form a secondary image, and the projection light is reflected by the functional reflection layer to form a display image, and the ratio between the reflectivity of the functional reflection layer to the projection light and the reflectivity of the inner glass plate to the projection light is greater than or equal to 10.

[0023] In one embodiment, there is a deviation angle between the secondary image and the display image, and the deviation angle is less than or equal to 2.1'. The embodiment of the present application provides a vehicle, the vehicle comprises a vehicle body and the black border display system, the black border display glass is installed at the opening of the vehicle body, and the projection device is installed inside the vehicle body.

[0024] In the related art, the functional reflection layer is integrated in the laminated glass formed by the outer glass plate and the inner glass plate, and is arranged in the display area of the laminated glass. The projection device projects the projection light to the display area of the laminated glass. The projection light is reflected by the inner glass plate to form a secondary image, and the projection light is reflected by the functional reflection layer to form a display image. Because the inner glass plate has a certain thickness, there is a deviation angle between the display image and the secondary image. When the deviation angle between the display image and the secondary image is greater than 2.1', ghosting that can be recognized by the human eye is formed between the display image and the secondary image. Or, when the brightness difference between the secondary image and the display image is not large, ghosting is also easy to cause. Ghosting is easy to make the driver feel dizzy, and also easy to affect the driver's vision and attention, cause unnecessary interference to the driver's vision, and reduce the driving safety and visual comfort.

[0025] In the present application, the sum of the thickness of the inner glass plate and the thickness of the second bonding layer is set to be less than or equal to 1.38 mm, or the second bonding layer is set to have a wedge-shaped cross-sectional profile, and / or the protective layer on the fourth surface is set to be an anti-reflection coating, thereby reducing the degree of deviation of the secondary image from the display image or increasing the ratio between the reflectivity of the functional reflection layer to the projection light and the reflectivity of the inner glass plate to the projection light, which helps to weaken or eliminate the ghost image formed between the secondary image and the display image, prevents the ghost image from causing unnecessary interference to the vision of the people inside the vehicle, helps the people inside the vehicle to see a clearer display image, and is conducive to improving the driving safety and visual comfort. BRIEF DESCRIPTION OF DRAWINGS

[0026] FIG. 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0027] FIG. 2 is a structural schematic diagram of a black border display system provided by the present application;

[0028] FIG. 3 is a structural schematic diagram of a black border display glass according to the present application;

[0029] FIG. 4 is another structural schematic diagram of a black border display glass according to the present application;

[0030] FIG. 5 is a sectional view of a second embodiment of a black border display glass according to the present application;

[0031] FIG. 6 is a sectional view of a third embodiment of a black border display glass according to the present application;

[0032] FIG. 7 is a partial sectional view of a fourth embodiment of a black border display glass according to the present application;

[0033] FIG. 8 is a partial sectional view of a fifth embodiment of a black border display glass according to the present application;

[0034] FIG. 9 is a sectional view of a sixth embodiment of a black border display glass according to the present application;

[0035] FIG. 10 is a sectional view of a seventh embodiment of a black border display glass according to the present application.

[0036] Corresponding nouns of the reference signs in the figures are as follows: vehicle 1000, black border display system 100, black border display glass 10, perspective area 11, shielding area 12, bottom shielding area 121, left shielding area 122, top shielding area 123, right shielding area 124, display area 13, outer glass sheet 14, first surface 141, second surface 142, first bonding layer 15, inner glass sheet 16, third surface 161, fourth surface 162, second bonding layer 17, functional reflective layer 18, shielding layer 19, first shielding sub-layer 191, second shielding sub-layer 192, protective layer 20, third bonding layer 21, heat insulation layer 22, electric heating element 23, busbar 24, projection device 200, projection light 201, vehicle body 300. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] In the embodiments of the present application, the terms "first", "second", and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. And "multiple" in the present application means two and more than two.

[0039] Please refer to FIG. 1 and FIG. 2, FIG. 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application, and FIG. 2 is a structural schematic diagram of a black border display system provided by the present application.

[0040] An embodiment of the present application provides a vehicle 1000.

[0041] The vehicle 1000 comprises a vehicle body 300 and a black border display system 100. The black border display system 100 comprises a black border display glass 10 and a projection device 200. The black border display glass 10 is installed at an opening of the vehicle body 300, and separates the vehicle body 300 into an outside of the vehicle body 300 and an inside of the vehicle body 300. The projection device 200 is installed in the inside of the vehicle body 300, and is configured to emit projection light 201 with a wavelength of 380-780 nm. The projection light 201 is incident on the black border display glass 10 at an incident angle of 65-75°. The black border display glass 10 reflects the projection light 201 into a human eye of a person in the vehicle to form a display image. The display image can be observed by the person in the vehicle without bending down, and the person in the vehicle has a better field of view and a longer line of sight for observing real-time conditions outside the vehicle body 300. The person in the vehicle can more easily obtain driving information, entertainment information, and other necessary information for assisting driving, and the driving safety is greatly improved. Thus, the traditional instrument panel can be partially or completely replaced, and even eliminated.

[0042] The projection light 201 can comprise at least 80% of P-polarized light. The higher the proportion of P-polarized light in the projection light 201, the more conducive to meeting the use requirements of drivers wearing sunglasses and the easier to eliminate the visual ghosting phenomenon of the display image. For example, the projection light 201 can comprise at least 85% of P-polarized light, or at least 90% of P-polarized light, or at least 95% of P-polarized light, or even 100% of P-polarized light, i.e., the projection light 201 is essentially pure P-polarized light.

[0043] The vehicle 1000 can be, but is not limited to, a car, 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 border display glass 10 can be used as a front windshield, a rear windshield, a side window, or a corner window of the vehicle 1000 to provide more display application scenarios for the vehicle 1000. In the embodiments of the present application, the black border display glass 10 is taken as an example of a front windshield.

[0044] For ease of description, the length direction of the vehicle 1000 shown in FIG. 1 is defined as the X-axis direction, the width direction is defined as the Y-axis direction, and the height direction is defined as the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are perpendicular to each other.

[0045] It should be noted that the "top", "bottom", "left", "right", "front" and "back" orientation words mentioned in the description are described according to the orientation of the vehicle 1000 shown in the accompanying drawings 1, and the advancing direction of the vehicle 1000 in the length direction is the positive direction of the X axis, the direction from left to right in the width direction of the vehicle 1000 is the positive direction of the Y axis, and the direction away from the ground in the width direction of the vehicle 1000 is the positive direction of the Z axis.

[0046] Referring to Figures 3 and 4, Figure 3 is a schematic view of one structure of the black border display glass described in the present application, and Figure 4 is another schematic view of the black border display glass described in the present application. It should be noted that Figures 3 and 4 are schematic views of the structure of the black border display glass 10 viewed from the inside of the vehicle 1000.

[0047] The black border display glass 10 described in the present application has a perspective area 11 and a shielding area 12. The shielding area 12 is arranged around the circumference of the perspective area 11, the visible light transmittance of the perspective area 11 is greater than or equal to 70%, so as to facilitate the observation of the outside environment by the person inside the vehicle through the perspective area 11. The visible light transmittance of the shielding area 12 is less than or equal to 5%, so as to play a shielding, protection and overall aesthetic enhancement role; preferably, the visible light transmittance of the shielding area 12 is less than or equal to 3%, more preferably less than or equal to 1%, further less than or equal to 0.5%, and even almost equal to 0, that is, not transparent.

[0048] The shielding area 12 described in the present application is provided with at least one display area 13, and the display area 13 is used to reflect the incident projection light 201 to form a display image. The display image can display vehicle driving information, various patterns or play videos, etc., and can be used for various scenes such as welcoming, creating atmosphere, watching movies and office work. Specifically, the display image is used to display driving parameters, including vehicle speed, engine revolutions, fuel consumption, tire pressure, warning information, driving mileage, etc., and can also be used to display weather temperature, entertainment information, and can also be used as dynamic navigation, night vision, real scene map, etc. The display area 13 is located in the shielding area 12, and the number of display areas 13 can be one as shown in Figure 3, or eight as shown in Figure 4, and other numbers such as two, three or even more can be designed according to actual products.

[0049] The display area 13 can be completely arranged in the shielding area 12, that is, the projection of the display area 13 along the thickness direction of the black border display glass 10 is completely located in the shielding area 12, and the display area 13 is surrounded by the shielding area 12. Specifically, along the height direction of the black border display glass 10, the shielding area 12 includes a bottom shielding area 121 located below the perspective area 11. In the embodiment, the display area 13 is located in the bottom shielding area 121. Alternatively, the shielding area 12 further includes a left shielding area 122 located on the left side of the perspective area 11, a top shielding area 123 located above the perspective area 11, and a right shielding area 124 located on the right side of the perspective area 11.

[0050] In order to improve the shielding effect of the shielding area 12 and facilitate the observation of the display area 13 by the person in the vehicle, the ratio of the total area of the shielding area 12 to the area of the black border display glass 10 is preferably 5% to 50%. Specifically, it can be exemplified as 5%, 8%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, and the like. More preferably, the ratio of the total area of the shielding area 12 to the area of the black border display glass 10 is 10% to 45%, or 15% to 40%, or 20% to 35%, so that the shielding effect of the shielding area 12 and the overall aesthetics of the black border display glass 10 can be better balanced.

[0051] In order to improve the display effect of the display area 13 and facilitate the observation of the display area 13 by the person in the vehicle, the ratio of the total area of the display area 13 to the area of the bottom shielding area 121 is preferably 10% to 110%, or 15% to 105%, or 20% to 100%, or 30% to 95%, or 40% to 90%, so that the display effect of the display area 13 and the overall aesthetics of the black border display glass 10 can be better balanced. Specifically, it can be exemplified as 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100%, 105%, or 110%, and the like. When the number of the display area 13 is greater than or equal to two, the total area of the display area 13 is equal to the sum of the areas of all the display areas 13.

[0052] In FIG. 3, the display area 13 is an integral whole, and the ratio of the total area of the display area 13 to the area of the bottom shielding area 121 is greater than or equal to 75%, or even almost covers the entire bottom shielding area 121, so as to form a through-type panoramic display effect from the A-pillar to the A-pillar.

[0053] It should be noted that the shape of the display area 13 and the number of the display area 13 can be set according to the actual application requirements of the vehicle 1000, and are not limited to the shape and number of the display area 13 as shown in FIGS. 3 and 4.

[0054] The display area 13 described in the present application has a P light reflectance Rp for P polarized light with a wavelength of 380 nm-780 nm at an incident angle of 69°, and the P light reflectance Rp is ≥20%. Specific examples can be 20%, 25%, 30%, 35%, 40%, 42%, 45%, 48%, 50%, 55%, etc.; preferably, the P light reflectance Rp is 25%-50%, so as to enhance the brightness of the projection display, improve the energy utilization rate of the projection device 200, thereby reducing the energy consumption of the projection device 200, and being beneficial to the miniaturization and heat dissipation design of the projection device 200.

[0055] The specific structure of the black border display system 100 will be described below with seven specific examples.

[0056] Please refer to Fig. 2 again, which is a structural schematic diagram of the black border display system described in the present application, and Fig. 2 specifically shows a cross-sectional schematic diagram of the first embodiment of the black border display glass.

[0057] The black border display glass 10 is a laminated glass structure. The black border display glass 10 includes an outer glass sheet 14, a first bonding layer 15, and an inner glass sheet 16. Along the thickness direction of the black border display glass 10, the outer glass sheet 14, the first bonding layer 15, and the inner glass sheet 16 are sequentially connected, and the first bonding layer 15 connects the outer glass sheet 14 and the inner glass sheet 16. When the black border display glass 10 is installed on the vehicle body 300, the outer glass sheet 14 faces the outside of the vehicle 1000, and the inner glass sheet 16 faces the inside of the vehicle 1000.

[0058] The outer glass sheet 14 includes a first surface 141 and a second surface 142. The first surface 141 and the second surface 142 are oppositely arranged along the thickness direction of the outer glass sheet 14. When the black border display glass 10 is installed on the vehicle body 300, the first surface 141 of the outer glass sheet 14 faces the outside of the vehicle 1000 as the outer surface of the black border display glass 10. The second surface 142 of the outer glass sheet 14 faces the first bonding layer 15.

[0059] The inner glass sheet 16 includes a third surface 161 and a fourth surface 162. The third surface 161 and the fourth surface 162 are oppositely arranged along the thickness direction of the inner glass sheet 16. When the black border display glass 10 is installed on the vehicle body 300, the third surface 161 of the inner glass sheet 16 faces the first bonding layer 15. The fourth surface 162 of the inner glass sheet 16 faces the inside of the vehicle 1000. The fourth surface 162 serves as the inner surface of the black border display glass 10.

[0060] In the embodiment, the first bonding layer 15 is located between the outer glass plate 14 and the inner glass plate 16, and is connected between the second surface 142 of the outer glass plate 14 and the third surface 161 of the inner glass plate 16. The first bonding layer 15 is used to bond the outer glass plate 14 and the inner glass plate 16 together, thereby improving the structural strength of the black border display glass 10 and avoiding the glass debris from the broken outer glass plate 14 or the inner glass plate 16 from splashing and scratching the internal personnel of the vehicle 1000, so that the black border display glass 10 meets more safety standards and regulatory requirements in more scenarios.

[0061] The black border display glass 10 further comprises a second bonding layer 17 and a functional reflective layer 18, and the functional reflective layer 18 is connected between the first bonding layer 15 and the second bonding layer 17. The second bonding layer 17 is at least partially located in the shielding area 12 and is connected to the third surface 161, and the functional reflective layer 18 is connected to one side of the second bonding layer 17 away from the third surface 161. The surface of the functional reflective layer 18 away from the second bonding layer 17 is connected to the first bonding layer 15. The functional reflective layer 18 at least covers the display area 13, that is, the area of the functional reflective layer 18 is greater than or equal to the total area of the display area 13. The functional reflective layer 18 is used to improve the reflectivity of the display area 13 to P-polarized light. The projection light 201 is incident on the display area 13, and the functional reflective layer 18 located in the display area 13 reflects the projection light 201 to form a display image that can be observed by the personnel in the vehicle. The second bonding layer 17 and the functional reflective layer 18 are both located in the bottom shielding area 121.

[0062] The black border display glass 10 further comprises a shielding layer 19. The shielding layer 19 is arranged in the shielding area 12, and the shielding layer 19 is located between the outer glass plate 14 and the functional reflective layer 18. The shielding area 12 is also commonly referred to as a black border area. In the present application, the functional reflective layer 18 is arranged in the shielding area 12 and the shielding layer 19 is located between the outer glass plate 14 and the functional reflective layer 18, so that the shielding layer 19 can shield the functional reflective layer 18 in the thickness direction of the black border display glass 10. The shielding layer 19 can be used as a display background for image display, can better shield the ambient light, avoid unnecessary interference to the line of sight, and can also improve the contrast of the display image and the display background and achieve a higher color gamut, so that the image display is clearer.

[0063] The outer glass sheet 14 is transparent or colored glass, the thickness of the outer glass sheet 14 is 0.7mm to 4mm, and the visible light transmittance of the outer glass sheet 14 is greater than or equal to 80%. The inner glass sheet 16 is transparent or colored glass, and the thickness of the inner glass sheet 16 is less than or equal to 1.8mm. The smaller the thickness of the inner glass sheet 16, the more difficult it is for the person inside the vehicle 1000 to observe the secondary image, and therefore, preferably, the thickness of the inner glass sheet 16 is less than or equal to 1.6mm, more preferably, the thickness of the inner glass sheet 16 is less than or equal to 1.4mm, further preferably, the thickness of the inner glass sheet 16 is less than or equal to 1.1mm, and even more preferably, the thickness of the inner glass sheet 16 is less than or equal to 0.7mm. In order to ensure that as many of the projected light rays 201 as possible are incident on the display region 13, the visible light transmittance of the inner glass sheet 16 is greater than or equal to 80%. 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%, and the visible light transmittance of the transparent glass is 80% to 95%. The total iron content (as Fe2O3) of the colored glass is 0.1% to 0.8%, and preferably 0.1% to 0.5%, and the visible light transmittance of the colored glass is 80% to 90%. For example, the outer glass sheet 14 can be transparent glass that is 2.1mm thick and has a visible light transmittance of 89%, and the inner glass sheet 16 can be green glass that is 1.6mm thick and has a visible light transmittance of 83%.

[0064] The first adhesive layer 15 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the first adhesive layer 15 is 0.38mm to 2.28mm. For example, the thickness of the first adhesive layer 15 can be, but is not limited to, 0.38mm, or 0.76mm, or 1.14mm, or 1.52mm, or 1.9mm, or 2.28mm, or other values between 0.38mm and 2.28mm. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP). When the first adhesive layer 15 is a transparent thermoplastic polymer, the visible light transmittance of the transparent thermoplastic polymer is greater than or equal to 80%. For example, the visible light transmittance of the first adhesive layer 15 can be, but is not limited to, 80%, or 85%, or 90%, or 95%, etc. When the first adhesive layer 15 is a colored thermoplastic polymer film, the visible light transmittance of the colored thermoplastic polymer film is greater than or equal to 80%. For example, the visible light transmittance of the first adhesive layer 15 can be, but is not limited to, 80%, or 85%, or 90%, etc. The colored thermoplastic polymer film can be a gray thermoplastic polymer film, a green thermoplastic polymer film, or a blue thermoplastic polymer film. For example, the first adhesive layer 15 can be a single-layer structure or a multi-layer structure, such as a double-layer structure, a triple-layer structure, a four-layer structure, a five-layer structure, etc. The first adhesive layer 15 can also have other functions, such as providing at least one colored area as a shading band to reduce the interference of sunlight on the human eye, or adding an infrared absorber to have a sunscreen or heat insulation function, or adding an ultraviolet absorber to have an ultraviolet shielding function, or having a higher plasticizer content in at least one layer of the multi-layer structure to have a sound insulation function. In order to ensure that the people inside the vehicle can observe the external environment of the vehicle 1000 through the black border display glass 10, in the present application, the visible light transmittance of the first adhesive layer 15 can be greater than or equal to 85%, preferably greater than or equal to 90%, more preferably greater than or equal to 95%; the haze of the first adhesive layer 15 is less than or equal to 1%, preferably less than or equal to 0.5%, more preferably less than or equal to 0.3%; which is more conducive to the people inside the vehicle to observe the external environment of the vehicle 1000 through the see-through area 11.

[0065] The material of the shielding layer 19 is selected from at least one of dark ink, opaque polymer film, and light control film. Along the thickness direction of the black border display glass 10, the shielding layer 19 can be connected to the second surface 142 of the outer glass plate 14, and / or embedded in the first adhesive layer 15, and / or connected between the first adhesive layer 15 and the functional reflective layer 18. In FIG. 2, the shielding layer 19 is connected to the second surface 142 of the outer glass plate 14.

[0066] The dark color ink can be ceramic ink or ultraviolet ink. The ceramic ink or ultraviolet ink is printed on the second surface 142 by a process such as screen printing or inkjet printing, and forms the shielding layer 19 after curing or high-temperature sintering. The thickness of the shielding layer 19 formed by the dark color ink is 5 μm to 40 μm.

[0067] The opaque polymer film can be a bulk-colored polymer film, for example, a black or brown coloring component is added during polymer film manufacturing, etc. It can also be a polymer film printed with ink, paint or pigment on the surface, for example, black ink, black paint or brown pigment is printed on the surface of the polymer film, etc. It can also be a dyed or colored polymer film, for example, black or brown dye is used to color the polymer film, etc. The material of the polymer film can be polyvinyl butyral (PVB), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polycarbonate (PC), polymethyl methacrylate (PMMA), etc. The opaque polymer film is embedded in the first adhesive layer 15, for example, the first adhesive layer 15 can be two pieces of thermoplastic polymer film, and the opaque polymer film is sandwiched between the two pieces of thermoplastic polymer film.

[0068] 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 3%, for example, 3%, 2%, 1%, 0.5%, 0%. In addition, the maximum visible light transmittance of the dimming film is set as needed, for example, 10%, 20%, 30%, 50%, 70%, 80%, etc. Specifically, for example, the visible light transmittance of the dimming film can be adjusted between 0% and 20%, or between 0.5% and 50%, or between 0% and 70%, etc. The dimming film can meet the requirements of visible light transmittance in multiple scenarios, for example, when black edge display is required, the dimming film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%), which improves the contrast between the display image and the display background, and when no display is required, the dimming film is in a transparent state (visible light transmittance is greater than or equal to 70%), which realizes greater area transparency of the vehicle window glass. The dimming film is embedded in the first adhesive layer 15, for example, the first adhesive layer 15 can be two pieces of thermoplastic polymer film, and the dimming film is sandwiched between the two pieces of thermoplastic polymer film.

[0069] The second bonding layer 17 is directly connected to the third surface 161 of the bottom shielding area 121. The area of the second bonding layer 17 is greater than or equal to the area of the functional reflective layer 18, and is less than or equal to the area of the third surface 161. The thickness of the second bonding layer 17 is less than the thickness of the first bonding layer 15, so as to reduce the overall thickness of the black border display glass 10, simplify the production process of the black border display glass 10, and reduce the production cost of the black border display glass 10. Meanwhile, in order to weaken or even eliminate the sub-image generated by the inner glass plate 16 to the projection light 201 incident at a high angle of incidence greater than 60°, the thickness of the second bonding layer 17 is preferably less than or equal to 0.38 mm, more preferably less than or equal to 0.2 mm, further preferably less than or equal to 0.15 mm, even more preferably less than or equal to 0.1 mm, and even more preferably less than or equal to 0.05 mm. The smaller the thickness of the second bonding layer 17, the more conducive to the sub-image and the display image partially overlapping each other, that is, the more conducive to weakening or even eliminating the ghosting formed between the sub-image and the display image, and further conducive to the in-vehicle personnel observing the display image.

[0070] The material of the second bonding layer 17 can be selected from at least one of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyurethane (PU), ionomer (SGP), OCA optical adhesive (Optically Clear Adhesive, OCA), LOCA optical adhesive (Liquid Optical Clear Adhesive, LOCA), and OCR optical clear resin (Optical Clear Resin, OCR). In order to ensure the firmness of the functional reflective layer 18, the bonding force between the second bonding layer 17 and the inner glass plate 16 is greater than or equal to 1 MPa; alternatively, the bonding force between the second bonding layer 17 and the inner glass plate 16 is greater than or equal to 2 MPa; or alternatively, the bonding force between the second bonding layer 17 and the inner glass plate 16 is greater than or equal to 5 MPa; or alternatively, the bonding force between the second bonding layer 17 and the inner glass plate 16 is greater than or equal to 6 MPa; or alternatively, the bonding force between the second bonding layer 17 and the inner glass plate 16 is greater than or equal to 8 MPa; or even, the bonding force between the second bonding layer 17 and the inner glass plate 16 is greater than or equal to 10 MPa.

[0071] In order to ensure that the projection light 201 is incident to the functional reflective layer 18 as much as possible, the visible light transmittance of the second bonding layer 17 can be greater than or equal to 85%, preferably greater than or equal to 90%, and more preferably greater than or equal to 95%; the haze of the second bonding layer 17 is less than or equal to 1%, preferably less than or equal to 0.5%, and more preferably less than or equal to 0.3%. The smaller the haze of the second bonding layer 17, the more conducive to the in-vehicle personnel observing the display image formed by the projection light 201 reflected by the functional reflective layer 18.

[0072] To ensure the overall strength of the black border display glass 10, the ratio of the thickness of the first adhesive layer 15 to the thickness of the second adhesive layer 17 is greater than or equal to 2, preferably greater than or equal to 5, more preferably greater than or equal to 10, further preferably greater than or equal to 15, and even preferably greater than or equal to 20. Meanwhile, to meet the protection requirements for pedestrians on the road when the vehicle 1000 is running, the ratio of the thickness of the first adhesive layer 15 to the thickness of the second adhesive layer 17 is less than or equal to 100, preferably less than or equal to 80, and more preferably less than or equal to 50. Preferably, the ratio of the thickness of the first adhesive layer 15 to the thickness of the second adhesive layer 17 is 5-30, for example, the thickness of the first adhesive layer 15 is 0.76 mm, and the thickness of the second adhesive layer 17 is 0.1 mm or 0.05 mm.

[0073] The functional reflective layer 18 is used to improve the reflectivity of the display area 13 to P-polarized light, and the functional reflective layer 18 can be exemplified by a P-polarized light reflective layer. In the embodiment, the functional reflective layer 18 is fixed on the bottom shielding area 121 of the black border display glass 10 through the first adhesive layer 15 and the second adhesive layer 17.

[0074] The P-polarized light reflective layer can be exemplified by a high-low refractive index stack, a metal stack, a stacked polymer film, etc. The P-polarized light reflective layer is used to improve the reflectivity of the functional reflective layer 18 to P-polarized light in the projection light 201, so that the reflectivity of the functional reflective layer 18 to P-polarized light is greater than or equal to 8%, preferably greater than or equal to 10%, more preferably greater than or equal to 10%, further preferably greater than or equal to 15%, even preferably greater than or equal to 20%, even more preferably greater than or equal to 25%, and even further preferably greater than or equal to 30%; the greater the reflectivity of the functional reflective layer 18 to P-polarized light, the more conducive to improving the brightness and contrast of the display image, so that the in-vehicle personnel can observe a clear display image.

[0075] In some embodiments, the visible light transmittance of the P-polarized light reflective layer is greater than or equal to 70%, and the P-polarized light reflective layer can not only cover the bottom shielding area 121, but also extend to the see-through area 11, and even cover the see-through area 11.

[0076] In other embodiments, the visible light transmittance of the P-polarized light reflective layer is less than or equal to 50%, further less than or equal to 30%, even less than or equal to 10%, more even less than or equal to 5%, which can to some extent save the use of materials of the shielding layer 19 and even partially replace the shielding layer 19, and is conducive to reducing the manufacturing cost of the black border display glass 10.

[0077] The functional reflection layer 18 can be a high-low refractive index stack, which includes at least one stack structure, each stack structure including a high refractive index layer and a low refractive index layer stacked in sequence, the high refractive index layer having a refractive index greater than or equal to 1.9, and the low refractive index layer having a refractive index less than 1.8, the high-low refractive index stack having a physical thickness of 100 nm to 800 nm (including the end values 100 nm and 800 nm), the high refractive index layer and the low refractive index layer can be deposited on the side of the second adhesive layer 17 facing away from the third surface 161 by a physical vapor deposition process (PVD), in particular a magnetron sputtering process. Among them, the high-low refractive index stack can be composed of only one "high refractive index layer / low refractive index layer" stack structure, or can include at least two stack structures, for example, can be composed of two stack structures, three stack structures or four stack structures. The material of the high refractive index layer can include oxides or alloy oxides or nitrides or oxynitrides of zirconium (Zr), niobium (Nb), silicon (Si), antimony (Sb), tin (Sn), zinc (Zn), indium (In), aluminum (Al), nickel (Ni), chromium (Cr), magnesium (Mg), manganese (Mn), vanadium (V), tungsten (W), hafnium (Hf), tantalum (Ta), molybdenum (Mo), gallium (Ga), yttrium (Y), bismuth (Bi), titanium (Ti) and the like, which can be exemplified as zinc tin oxide (ZnSnO x ), titanium oxide (TiO x ), niobium oxide (NbO x ), silicon nitride (SiN x ), silicon aluminum nitride (SiAlN x ), silicon zirconium nitride (SiZrN x ) and the like. In order to better achieve the optical performance, mechanical performance and appearance color of the functional reflection layer 18 to meet the comprehensive requirements of the vehicle 1000 window glass, the high refractive index layer can be a single layer structure, or a multi-layer structure including at least two high refractive index sub-layers, the difference between the refractive indices of the two adjacent high refractive index sub-layers can be greater than or equal to 0.1. The material of the low refractive index layer can include oxides or alloy oxides or oxynitrides or carbides or fluorides of silicon (Si), aluminum (Al), magnesium (Mg), zirconium (Zr) and the like, which can be exemplified as silicon oxide (SiO2), silicon aluminum oxide (SiAlO x ), silicon zirconium oxide (SiZrO x ), aluminum oxide (Al2O3), magnesium oxide (MgO), magnesium fluoride (MgF) and the like. In order to better achieve the optical performance, mechanical performance and appearance color of the functional reflection layer 18 to meet the comprehensive requirements of the vehicle 1000 window glass, the low refractive index layer can be a single layer structure, or a multi-layer structure including at least two low refractive index sub-layers.

[0078] The functional reflective layer 18 can be a metal stack, the metal stack comprising at least two dielectric layers and at least one metal layer, each metal layer being located between two adjacent dielectric layers, the physical thickness of the metal stack being 100 nm to 500 nm (including the end values 100 nm and 500 nm), the metal layers and the dielectric layers can be deposited to the side of the second adhesive layer 17 facing away from the third surface 161 by a physical vapor deposition process (PVD), in particular a magnetron sputtering process. The number of metal layers can be, for example, 1, 2, 3, 4 or 5, etc., the material of the metal layers being selected from at least one of silver (Ag), gold (Au), copper (Cu) and aluminum (Al), the material of the metal layers being preferably silver or a silver alloy. The silver alloy is an alloy of silver with at least one of copper (Cu), gold (Au), platinum (Pt), nickel (Ni), chromium (Cr), titanium (Ti), aluminum (Al), indium (In), zinc (Zn), tin (Sn), the content of silver in the silver alloy being greater than or equal to 90%, preferably greater than or equal to 95%. The material of the dielectric layers is selected from oxides, nitrides or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, Sm. For example, it can be zinc tin oxide (ZnSnO x ), aluminum-doped zinc oxide (AZO), titanium oxide (TiO x ), silicon zirconium nitride (SiZrN), silicon aluminum nitride (SiALN), silicon aluminum oxide (SiAlO), etc.

[0079] The functional reflective layer 18 can be a stacked polymer film, the thickness of the stacked polymer film preferably being 20 μm to 500 μm, for example, 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., more preferably 50 μm to 300 μm. The stacked polymer film is composed of tens, hundreds or even thousands of layers of two kinds of resin films with different refractive indices alternately stacked together, the material of the resin film can be at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), syndiotactic polystyrene (sPS), polybutylene terephthalate (PBT), poly(cyclohexylendimethylene terephthalate) (PCT), polyetherimide (PEI) and polymethylacrylimide (PMI). The stacked polymer film can be obtained on the market, for example, from 3M Company, Toray Industries, Inc., Shikoku Chemicals Corporation, Eastman Chemical Company.

[0080] It should be noted that in the embodiment, the functional reflection layer 18 is an equal-thickness thin layer structure. The ratio of the area of the fourth surface 162 of the inner glass sheet 16 to the area of the functional reflection layer 18 is 3-20 (including the end values 3 and 20). For example, the ratio of the area of the fourth surface 162 of the inner glass sheet 16 to the area of the functional reflection layer 18 can be, but is not limited to, 3, or 5, or 6, or 10, or 15, or 20, or other values between 3 and 20. Preferably, the ratio of the area of the fourth surface 162 of the inner glass sheet 16 to the area of the functional reflection layer 18 is 5-10 (including the end values 5 and 10). For example, the ratio of the area of the fourth surface 162 of the inner glass sheet 16 to the area of the functional reflection layer 18 can be, but is not limited to, 5, or 6, or 7, or 8, or 9, or 10, or other values between 5 and 10; this is advantageous for the person inside the vehicle to observe the display image of the black border display glass 10 without reducing the area ratio of the perspective area 11, thereby not affecting the person inside the vehicle to observe the external environment of the vehicle 1000 through the perspective area 11 of the black border display glass 10.

[0081] In order to weaken or even eliminate the secondary image generated by the inner glass sheet 16 to the projection light 201 incident at a high angle of greater than 60°, preferably the sum of the thickness of the second bonding layer 17 and the thickness of the inner glass sheet 16 is less than or equal to 1.38 mm, more preferably less than or equal to 1.25 mm, further preferably less than or equal to 1.15 mm, even more preferably less than or equal to 1.05 mm, even more preferably less than or equal to 0.95 mm, even further preferably less than or equal to 0.75 mm, the smaller the sum of the thickness of the second bonding layer 17 and the thickness of the inner glass sheet 16, the more advantageous it is to make the secondary image generated by the inner glass sheet 16 reflecting the projection light 201 and the display image generated by the functional reflection layer 18 reflecting the projection light 201 partially overlap with each other, i.e., to reduce the deviation angle between the secondary image and the display image to less than or equal to 2.1', to avoid the formation of ghosting between the secondary image and the display image, to prevent the ghosting from unnecessarily interfering with the line of sight of the person inside the vehicle, to help the person inside the vehicle to see a clearer display image, and to improve driving safety and visual comfort.

[0082] In order to weaken or even eliminate the sub-image generated by the inner glass plate 16 to the projection light 201 at a high angle of incidence greater than 60°, the second bonding layer 17 preferably has a wedge-shaped cross-sectional profile, and the wedge angle of the wedge-shaped cross-sectional profile is 0.05 mrad to 0.6 mrad, which can be exemplified by 0.05 mrad, 0.1 mrad, 0.15 mrad, 0.2 mrad, 0.25 mrad, 0.3 mrad, 0.35 mrad, 0.4 mrad, 0.45 mrad, 0.5 mrad, 0.55 mrad, 0.6 mrad, etc. The wedge angle can make the sub-image generated by the reflection of the projection light 201 by the inner glass plate 16 and the display image generated by the reflection of the projection light 201 by the functional reflection layer 18 partially or even completely overlap each other, that is, the deviation angle between the sub-image and the display image is less than or equal to 2.1'. From the aspects of manufacturing convenience and production control difficulty, the wedge angle of the wedge-shaped cross-sectional profile is preferably 0.25 mrad to 0.55 mrad. When the deviation angle is greater than 2.1', ghosting will be formed between the display image and the sub-image, and the greater the deviation angle between the display image and the sub-image, the more serious the ghosting observed by the person in the vehicle. Preferably, the deviation angle between the sub-image and the display image is less than or equal to 1.8', and more preferably, the deviation angle between the sub-image and the display image is less than or equal to 1.5', so as to reduce the deviation between the sub-image and the display image, avoid ghosting between the sub-image and the display image, prevent the ghosting from unnecessarily interfering with the line of sight of the person in the vehicle, help the person in the vehicle to see a clearer display image, and be conducive to the head-up display of the vehicle 1000, thereby improving the driving safety and visual comfort.

[0083] In this application, the black border display glass 10 shown in FIG. 2 is taken as an example, different thicknesses of the second bonding layer 17 and the inner glass plate 16 are selected for testing, the deviation angle between the sub-image and the display image is counted in Table 1, and whether ghosting is formed between the display image and the sub-image is determined by determining whether the deviation angle exceeds 2.1'.

[0084] Table 1: Deviation angle between display image and sub-image of four tests

[0085] From Table 1, it can be seen that:

[0086] In Comparative Example 1 and Examples 1-2, the thickness of the second adhesive layer 17 was 0.05 mm, the second adhesive layer 17 had a rectangular cross-sectional profile with a wedge angle equal to 0, and the magnitude of the deviation angle between the secondary image and the display image was measured by varying the thickness of the inner glass sheet 16. From the test results, it was determined that the sum of the thickness of the second adhesive layer 17 and the thickness of the inner glass sheet 16 in Comparative Example 1 was greater than 1.38 mm, the deviation angle in Comparative Example 1 was greater than 2.1', and there was a noticeable ghost image. The sum of the thickness of the second adhesive layer 17 and the thickness of the inner glass sheet 16 in Example 1 was less than or equal to 1.05 mm, the deviation angle in Example 1 was less than or equal to 2.1', and there was no visually noticeable ghost image. The sum of the thickness of the second adhesive layer 17 and the thickness of the inner glass sheet 16 in Example 2 was less than or equal to 0.75 mm, the deviation angle in Example 2 was less than or equal to 1.6', and there was no visually noticeable ghost image.

[0087] In Comparative Example 2 and Examples 3-4, the thickness of the second adhesive layer 17 was 0.38 mm, the second adhesive layer 17 had a wedge-shaped cross-sectional profile with a wedge angle equal to 0.5 mrad or 0.7 mrad, and the magnitude of the deviation angle between the secondary image and the display image was measured by varying the thickness of the inner glass sheet 16. From the test results, it was determined that the sum of the thickness of the second adhesive layer 17 and the thickness of the inner glass sheet 16 in Comparative Example 2 was greater than 1.38 mm, the deviation angle in Comparative Example 2 was greater than 2.5', even with the third adhesive layer 21 having a wedge angle of 0.7 mrad, and there was a noticeable ghost image. The sum of the thickness of the second adhesive layer 17 and the thickness of the inner glass sheet 16 in Example 3 was less than or equal to 1.38 mm, the deviation angle in Example 3 was less than or equal to 1.9', and there was no visually noticeable ghost image, with the second adhesive layer 17 having a smaller wedge angle. The sum of the thickness of the second adhesive layer 17 and the thickness of the inner glass sheet 16 in Example 4 was less than or equal to 1.08 mm, the deviation angle in Example 4 was less than or equal to 1.4', and there was no visually noticeable ghost image, with the second adhesive layer 17 having a smaller wedge angle.

[0088] The projection device 200 can be a projector or a display screen. The projection device 200 can be, for example, a Thin Film Transistor (TFT) display screen, an Organic Light-Emitting Diode (OLED) display screen, a Liquid Crystal On Silicon (LCOS) display screen, a Digital Light Processing (DLP) display screen, a Mini Light Emitting Diode (Mini LED) display screen, a Micro Light Emitting Diode (Micro LED) display screen, or the like. In the present embodiment, the projection device 200 is a projector, which is aligned with the functional reflection layer 18 located in the display area 13 of the black matrix display glass 10.

[0089] It should be noted that the projection light 201 emitted by the projection device 200 is projected into the display area 13 of the bottom shielding area 121 at an incident angle of 65° to 75°. For example, the projection light 201 emitted by the projection device 200 can be projected into the display area 13 of the bottom shielding area 121 at an incident angle of 65°, 66°, 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74°, or 75°.

[0090] FIG. 5 is a cross-sectional view of a second embodiment of the black matrix display glass according to the present application.

[0091] Different from the first embodiment shown in FIG. 2, in the present embodiment, the area of the second bonding layer 17 is equal to the area of the third surface 161, and the second bonding layer 17 completely covers the third surface 161, i.e., the projection of the second bonding layer 17 along the thickness direction of the black matrix display glass 10 completely overlaps the third surface 161.

[0092] The black matrix display glass 10 further comprises a third bonding layer 21. The third bonding layer 21 can cover the regions of the see-through area 11, the left shielding area 122, the right shielding area 124, and the bottom shielding area 121 that are not covered by the functional reflection layer 18. The third bonding layer 21 is located between the first bonding layer 15 and the second bonding layer 17, and is connected to the side surface of the functional reflection layer 18. The thickness of the third bonding layer 21 is equal to the thickness of the functional reflection layer 18. The sum of the area of the third bonding layer 21 and the area of the functional reflection layer 18 is equal to the area of the first bonding layer 15, so as to ensure the flatness of the black matrix display glass 10. It can be understood that the sum of the areas of the projections of the third bonding layer 21 and the functional reflection layer 18 along the thickness direction of the black matrix display glass 10 is equal to the area of the first bonding layer 15.

[0093] In this embodiment, the third adhesive layer 21 is used to fill the gap between the first adhesive layer 15 and the second adhesive layer 17, so that the decrease of the overall strength of the black border display glass 10 caused by the uneven thickness of the first adhesive layer 15 and the second adhesive layer 17 can be prevented during the production of the black border display glass 10. The material of the third adhesive layer 21 can be the same as or different from that of the second adhesive layer 17, which is not limited in the present application. Preferably, the material of the third adhesive layer 21 is the same as that of the second adhesive layer 17.

[0094] The black border display glass 10 further comprises a protective layer 20. The protective layer 20 is located at least in the bottom shielding area 121 and connected to the fourth surface 162 of the inner glass plate 16. Exemplarily, the protective layer 20 is arranged at the bottom shielding area 121 of the black border display glass 10.

[0095] The protective layer 20 can be a defogging coating, an anti-fingerprint coating, an anti-glare film, an anti-reflective coating or an S-polarized light polarizer. When the protective layer 20 is a defogging coating, the defogging coating is used to slow down or avoid the fogging of the bottom shielding area 121, so as to avoid the interference of the fog to the display image, and further improve the driving safety. When the protective layer 20 is an anti-fingerprint coating, the anti-fingerprint coating can improve the anti-fingerprint and anti-oil stain ability of the bottom shielding area 121, effectively prevent the residue of fingerprints and oil stains, and also can improve the hardness and wear resistance of the optical surface. For example, the anti-fingerprint coating can be a silica gel coating, or an acrylic coating, or a polyurethane coating, or a polyacrylate coating, or an organosiloxane coating, etc. When the protective layer 20 is an anti-glare film, the anti-glare film can reduce the glare and reflection caused by the reflection of the ambient light on the bottom shielding area 121, so as to improve the visual comfort and clarity of the driver and passenger, for example, the anti-glare film can be a diffuse reflection PET, etc. When the protective layer 20 is an S-polarized light polarizer, the S-polarized light polarizer can filter the S-polarized light in the ambient light, so as to suppress the interference of the reflection of the ambient light on the functional reflection layer 18 to the display image, and improve the visual comfort and clarity of the driver and passenger.

[0096] When the protective layer 20 is an anti-reflective coating, the anti-reflective coating can reduce the reflection of the fourth surface 162 of the inner glass sheet 16 to the projection light 201, and in the case that the absorption rate of the inner glass sheet 16 to the projection light 201 does not change or changes little, the anti-reflective coating makes more projection light 201 reach the functional reflective layer 18, and further makes the ratio between the reflection rate of the functional reflective layer 18 to the projection light 201 and the reflection rate of the fourth surface 162 of the inner glass sheet 16 to the projection light 201 increase, preferably greater than or equal to 10, more preferably greater than or equal to 20, further greater than or equal to 30, and even preferably greater than or equal to 50. By reducing the reflection rate of the fourth surface 162 of the inner glass sheet 16 to the projection light 201, the brightness of the secondary image formed by the reflection of the projection light 201 to the fourth surface 162 of the inner glass sheet 16 can be reduced, the brightness of the display image formed by the reflection of the projection light 201 to the functional reflective layer 18 can be increased, and thus the ghosting between the secondary image and the display image can be reduced, the dizziness of the people in the vehicle can be reduced, and the driving safety and the visual comfort can be improved. For example, the anti-reflective coating can be a porous silica coating, a high-low refractive index stack, or the like.

[0097] The anti-reflective coating can be a high-low refractive index stack, and can be formed on the fourth surface 162 of the inner glass sheet 16 by a magnetron sputtering process. The high refractive index layer in the high-low refractive index stack forming the anti-reflective coating has a refractive index of 1.7-2.75 to the projection light 201. For example, the high refractive index layer can have a refractive index of 1.7, or 1.8, or 2.0, or 2.5, or 2.7, or 2.75, or other values between 1.7 and 2.75 to the projection light 201. In order to better achieve the comprehensive requirements of the vehicle window glass in terms of optical performance, mechanical performance, appearance color, and the like, the high refractive index layer can have a single-layer structure or a multi-layer structure, and the difference between the refractive indices of two adjacent high refractive index sub-layers can be greater than or equal to 0.05. The low refractive index layer in the high-low refractive index stack forming the anti-reflective coating has a refractive index of 1.35-1.69 to the projection light 201. For example, the low refractive index layer can have a refractive index of 1.35, or 1.4, or 1.5, or 1.55, or 1.65, or 1.69, or other values between 1.35 and 1.69 to the projection light 201. In order to better achieve the comprehensive requirements of the vehicle window glass in terms of optical performance, mechanical performance, appearance color, and the like, the low refractive index layer can have a single-layer structure or a multi-layer structure, and the difference between the refractive indices of two adjacent low refractive index sub-layers can be greater than or equal to 0.05.

[0098] It should be noted that the difference between the refractive indices of the adjacent high refractive index layer and the low refractive index layer to the projection light 201 is greater than or equal to 0.1, preferably greater than or equal to 0.3, more preferably greater than or equal to 0.5, and further preferably greater than or equal to 0.8.

[0099] The anti-reflective coating can be a porous silica coating. The porous silica coating is formed by a sol-gel process. The porous silica coating has a porosity of 30% to 65%, for example, the porosity can be 30%, 40%, 50%, 65%, etc. The porous silica coating has a refractive index of 1.2 to 1.36 for the projection light 201, for example, the porous silica coating can have a refractive index of 1.2, 1.25, 1.36, etc. for the projection light 201. The porous silica coating has a thickness of 20 nm to 300 nm, for example, the thickness can be 20 nm, 50 nm, 100 nm, 200 nm, 300 nm, etc.

[0100] It should be noted that the same content as in the first embodiment described above is not repeated in this embodiment.

[0101] Referring to FIG. 6, FIG. 6 is a cross-sectional view of a third embodiment of the black border display glass according to the present application.

[0102] Different from the second embodiment shown in FIG. 5, in the present embodiment, the protective layer 20 of the black border display glass 10 covers the shielding area 12 and the see-through area 11. The protective layer 20 completely covers the fourth surface 162 of the inner glass sheet 16, i.e., the projection of the protective layer 20 along the thickness direction of the black border display glass 10 completely overlaps the fourth surface 162, so as to further enable the see-through area 11 to have the functions of anti-fogging, anti-fingerprint, anti-dazzling or anti-reflecting, etc., which is beneficial to the inside person of the vehicle 1000 to observe a clear and non-ghosting display image.

[0103] Optionally, in some embodiments, the protective layer 20 is located in the shielding area 12 and part of the see-through area 11. The protective layer 20 covers the fourth surface 162 of the bottom shielding area 121 and part of the fourth surface 162 of the see-through area 11, i.e., the projection of the protective layer 20 along the thickness direction of the black border display glass 10 is located on part of the fourth surface 162 of the inner glass sheet 16. For example, the protective layer 20 covers 50%, 60%, 70% or 80% of the fourth surface 162 of the inner glass sheet 16. It should be noted that the same content as in the second embodiment described above is not repeated in the present embodiment.

[0104] Referring to FIG. 7, FIG. 7 is a partial cross-sectional view of a fourth embodiment of the black border display glass according to the present application, and FIG. 7 specifically shows a cross-sectional view of the display area 13.

[0105] Different from the first embodiment shown in FIG. 2, in the present embodiment, the shielding layer 19 in the bottom shielding area 121 is composed of a first shielding sub-layer 191 and a second shielding sub-layer 192, the first shielding sub-layer 191 is directly arranged on the second surface 142, and the second shielding sub-layer 192 is embedded in the first adhesive layer 15. The first shielding sub-layer 191 and the second shielding sub-layer 192 at least partially overlap in the thickness direction of the black border display glass 10.

[0106] The material of the first shielding sub-layer 191 is dark ink, and the material of the second shielding sub-layer 192 is an opaque polymer film or a light-adjustable film. Preferably, the second shielding sub-layer 192 is a light-adjustable film, which can better meet the requirement of visible light transmittance in multiple scenarios. For example, when image display is required, the light-adjustable film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%), which improves the contrast between the displayed image and the display background. When no display is required, the light-adjustable film is in a transparent state (visible light transmittance is greater than or equal to 70%), which realizes greater transparency of the black border display glass 10 and improves the field of view of the person inside the vehicle for observing the environment outside the vehicle. Specifically, it can be understood that other forms can also be set according to actual conditions, for example, the first shielding sub-layer 191 and the second shielding sub-layer 192 are both arranged in the first adhesive layer 15. It should be noted that the same content in the present embodiment as in the above-mentioned first embodiment will not be repeated.

[0107] Please refer to FIG. 8, which is a partial cross-sectional view of the fifth embodiment of the black border display glass according to the present application.

[0108] Different from the first embodiment shown in FIG. 2, in the present embodiment, the second adhesive layer 17 of the black border display glass 10 has a wedge-shaped cross-sectional profile. The projection light 201 is directly incident on the fourth surface 162 of the inner glass plate 16 through the protective layer 20, and is transmitted to the functional reflection layer 18 through the second adhesive layer 17 and then reflected by the functional reflection layer 18 to form a display image. Since the projection light 201 is incident at a high angle of greater than 60°, the second adhesive layer 17 with a wedge-shaped cross-sectional profile can weaken or even eliminate the secondary image generated by the reflection of the projection light 201 on the fourth surface 162. Optionally, the inner glass plate 16 with a wedge-shaped cross-sectional profile can also be further selected. It should be noted that the same content in the present embodiment as in the above-mentioned first embodiment will not be repeated.

[0109] Please refer to FIG. 9, which is a cross-sectional view of the sixth embodiment of the black border display glass according to the present application.

[0110] Different from the first embodiment shown in FIG. 2, in the present embodiment, the black border display glass 10 further comprises a heat insulation layer 22, which can enable the black border display glass 10 to have excellent heat insulation performance, thereby improving the thermal comfort of the vehicle interior environment. Preferably, the total solar energy transmittance (TTS) of the black border display glass 10 with the heat insulation layer 22 is less than or equal to 55%, more preferably less than or equal to 50%, and even less than or equal to 45%. The lower the total solar energy transmittance, the better the heat insulation performance of the black border display glass 10. The heat insulation layer 22 can be arranged on the second surface 142, or arranged in the first bonding layer 15, or arranged on the third surface 161, or arranged on the fourth surface 162. Exemplarily, the heat insulation layer 22 is arranged on the second surface 142, and partially overlaps or completely overlaps the shielding layer 19 in the thickness direction of the black border display glass 10.

[0111] The heat insulation layer 22 can be at least one selected from a single silver nano coating, a double silver nano coating, a triple silver nano coating, a quadruple silver nano coating, an ITO nano coating, an FTO nano coating, and an infrared blocking micron coating.

[0112] The single silver nano coating, the double silver nano coating, the triple silver nano coating, and the quadruple silver nano coating can be formed by a magnetron sputtering process, and their physical thickness is preferably 100 nm to 500 nm. The single silver nano coating is a transparent nano coating with one silver layer and at least two dielectric layers, the double silver nano coating is a transparent nano coating with two silver layers and at least three dielectric layers, the triple silver nano coating is a transparent nano coating with three silver layers and at least four dielectric layers, and the quadruple silver nano coating is a transparent nano coating with four silver layers and at least five dielectric layers. The material of the dielectric layer is selected from oxides, nitrides, or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, and Sm.

[0113] The ITO nano coating can be formed by a magnetron sputtering process, and the physical thickness of the ITO nano coating is preferably 100 nm to 500 nm. The ITO nano coating is a transparent nano coating with at least one ITO (indium tin oxide) functional layer and at least two dielectric layers, and the material of the dielectric layer is selected from oxides, nitrides, or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, and Sm. The FTO nano coating can be formed by a chemical vapor deposition process (CVD), and the physical thickness of the FTO nano coating is preferably 50 nm to 500 nm. The FTO nano coating is a transparent nano coating with at least one FTO (fluorine-doped tin oxide) functional layer.

[0114] The infrared barrier micrometer coating can be formed by a sol-gel method, the thickness of the infrared barrier micrometer coating is 5 μm to 30 μm, the infrared barrier micrometer coating is a transparent micrometer coating with infrared barrier nanoparticles, and the material of the infrared barrier nanoparticles can be at least one selected from ITO (indium tin oxide), FTO (fluorine-doped tin oxide), CWO (cesium-doped tungsten oxide), lanthanum hexaboride (LaB6), and vanadium pentoxide (V2O5). The average particle size of the infrared barrier nanoparticles is 20 nm to 100 nm.

[0115] In some embodiments, the functional reflective layer 18 and the heat insulation layer 22 at least partially overlap in the thickness direction of the black border display glass 10, which is conducive to simplifying the production process of the heat insulation layer 22. In order to weaken or even eliminate the reflection of the heat insulation layer 22 to the projection light 201 to form a secondary image, it is preferred that the heat insulation layer 22 is not arranged between the shielding layer 19 and the functional reflective layer 18. That is, the functional reflective layer 18 and the heat insulation layer 22 do not overlap with each other in the thickness direction of the black border display glass 10, so that the reflection of the heat insulation layer 22 to the projection light 201 can be avoided to interfere with the display image formed by the functional reflective layer 18. It should be noted that the same content as in the first embodiment described above will not be described again in this embodiment.

[0116] Referring to FIG. 10, FIG. 10 is a cross-sectional schematic view of a seventh embodiment of the black border display glass described in the present application.

[0117] Different from the first embodiment shown in FIG. 2, in the present embodiment, the black border display glass 10 further comprises an electric heating element 23 and at least two bus bars 24. The electric heating element 23 and the at least two bus bars 24 are arranged between the second surface 142 and the first adhesive layer 15. One of the bus bars 24 is electrically connected to the positive electrode of a power supply (not shown), and the other bus bar 24 is electrically connected to the negative electrode of the power supply (not shown). The current of the power supply is input into the electric heating element 23 through the at least two bus bars 24, so that the electric heating element 23 generates heat to heat the black border display glass 10 to achieve the functions of defrosting, defogging, snow removal, even ice removal, and the like, thereby further improving the driving safety. The electric heating element 23 can be arranged on the second surface 142, the third surface 161, the fourth surface 162, or embedded in the first adhesive layer 15. The bus bars 24 are electrically connected to the electric heating element 23. The voltage of the power supply described in the present application is 12 V to 380 V, and the electric heating element 23 can enable the black border display glass 10 to have a heating power density of at least 400 W / m 2 , for example, the electric heating element 23 can enable the black border display glass 10 to have a heating power density of at least 800 W / m 2 , and for another example, the electric heating element 23 can enable the black border display glass 10 to have a heating power density of at least 1000 W / m 2a heating power density of at least 1000 W / m2. 2 a heating power density of at least 1000 W / m2.

[0118] The electric heating element 23 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 quintuple-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 sheet, etc. The single-silver electric heating coating, the double-silver electric heating coating, the triple-silver electric heating coating, the quadruple-silver electric heating coating, the quintuple-silver electric heating coating and the TCO electric heating coating can be formed by a physical vapor deposition process (PVD) or a chemical vapor deposition process (CVD), and their physical thickness is preferably 100 nm to 500 nm. The single-silver electric heating coating is a transparent nano-coating with one silver layer and at least two dielectric layers, the double-silver electric heating coating is a transparent nano-coating with two silver layers and at least three dielectric layers, the triple-silver electric heating coating is a transparent nano-coating with three silver layers and at least four dielectric layers, the quadruple-silver electric heating coating is a transparent nano-coating with four silver layers and at least five dielectric layers, and the quintuple-silver electric heating coating is a transparent nano-coating with five silver layers and at least six dielectric layers. The TCO electric heating coating is a transparent nano-coating with at least one transparent conductive oxide (TCO) functional layer, the material of the TCO functional layer can be ITO (indium tin oxide), FTO (fluorine-doped tin oxide) or AZO (aluminum-doped zinc oxide), etc., and the TCO electric heating coating can also include at least one dielectric layer. The material of the dielectric layer is selected from oxides, nitrides or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu and Sm. The metal wire can be at least one of a copper wire, a tungsten wire, an aluminum wire or a copper alloy wire, and the diameter of the metal wire is 0.01 mm to 0.5 mm (including the end point values 0.01 mm and 0.5 mm). The printed silver paste wire has a printed line width of 0.1 mm to 1.0 mm (including the end point values 0.1 mm and 1.0 mm) and a printed thickness of 3 μm to 20 μm (including the end point values 3 μm and 20 μm). The nano-silver wire, the carbon fiber wire, the metal mesh or the graphene heating sheet can be purchased on the market.

[0119] It should be noted that the same content as in the first embodiment described above will not be described again in this embodiment.

[0120] The above has carried out the detailed introduction to the embodiment of the application, the principle and implementation mode of the application have been described by applying specific examples in this paper, the above embodiment explanation is only used for helping understanding the method of the application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the application, the specific implementation mode and application range will have the change, and the above is described, the content of the specification should not be understood as the limitation of the application.

Claims

1. A black border display glass, characterized by, The black border display glass comprises an outer glass sheet, a first bonding layer and an inner glass sheet, the outer glass sheet comprises a first surface and a second surface arranged oppositely, the inner glass sheet comprises a third surface and a fourth surface arranged oppositely, and the first bonding layer is connected between the second surface and the third surface; The black border display glass has a see-through area and a shielding area, the see-through area has a visible light transmittance greater than or equal to 70%, and the shielding area has a visible light transmittance less than or equal to 5%, and at least one display area is arranged in the shielding area; The black border display glass further comprises a second bonding layer and a functional reflective layer, the second bonding layer is at least partially located in the shielding area and connected to the third surface, and the functional reflective layer is connected between the first bonding layer and the second bonding layer, and the functional reflective layer at least covers the display area; The display area has a P light reflectance Rp for P polarized light with a wavelength of 380-780 nm at an incident angle of 69°, and the P light reflectance Rp is greater than or equal to 20%.

2. The black border display glass according to claim 1, wherein, The shielding area comprises a bottom shielding area located below the see-through area, and the display area is located in the bottom shielding area. The ratio of the total area of the display area to the area of the bottom shielding area is 10%-110%, or 15%-105%, or 20%-100%, or 30%-95%, or 40%-90%.

3. The black border display glass of claim 1, wherein, The black border display glass further comprises a shielding layer, the shielding layer is arranged in the shielding area, the shielding layer is located between the outer glass sheet and the functional reflective layer, and the material of the shielding layer is selected from at least one of a dark ink, an opaque polymer film and a light control film.

4. The black border display glass according to claim 3, wherein, The shielding layer in the bottom shielding area is composed of a first shielding sub-layer and a second shielding sub-layer, the material of the first shielding sub-layer is a dark ink, and the material of the second shielding sub-layer is an opaque polymer film or a light control film.

5. The black border display glass of claim 1, wherein, The thickness of the second bonding layer is less than the thickness of the first bonding layer, the ratio of the thickness of the first bonding layer to the thickness of the second bonding layer is greater than or equal to 2 and less than or equal to 100.

6. The black border display glass of claim 1, wherein, The thickness of the second bonding layer is less than or equal to 0.38 mm, the second bonding layer has a wedge-shaped cross-sectional profile, and the wedge angle of the wedge-shaped cross-sectional profile is 0.05-0.6 mrad.

7. The black border display glass of claim 1, wherein, The sum of the thickness of the second bonding layer and the thickness of the inner glass sheet is less than or equal to 1.38 mm.

8. The black border display glass of claim 1, wherein, The material of the second bonding layer is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyurethane, ionic polymer, OCA optical glue, LOCA optical glue and OCR optical transparent resin.

9. The black border display glass of claim 1, wherein, The bonding force between the second bonding layer and the inner glass sheet is greater than or equal to 1 MPa, the visible light transmittance of the second bonding layer is greater than or equal to 85%, and the haze of the second bonding layer is less than or equal to 1%.

10. The black border display glass of claim 1, wherein, The functional reflective layer is a P polarized light reflective layer, and the material of the P polarized light reflective layer is selected from one of a high-low refractive index stack, a metal stack and a stacked polymer film.

11. The black border display glass of claim 1, wherein, The ratio of the area of the fourth surface to the area of the functional reflective layer is greater than or equal to 3 and less than or equal to 20.

12. The black border display glass of claim 1, wherein, The area of the second bonding layer is greater than or equal to the area of the functional reflective layer and less than or equal to the area of the third surface.

13. The black border display glass of claim 1, wherein, The black border display glass further comprises a protective layer, the protective layer is located at least in the shielding area and connected to the fourth surface; The protective layer comprises an anti-fog coating, an anti-fingerprint coating, an anti-glare film, an anti-reflective coating or an S-light polarizer; When the protective layer is an anti-reflective coating, the anti-reflective coating is a high-low refractive index stack, the high-low refractive index stack comprises a plurality of high refractive index layers and a plurality of low refractive index layers, the plurality of high refractive index layers and the plurality of low refractive index layers are arranged alternately; or, the anti-reflective coating is a porous silica coating.

14. The black border display glass of claim 1, wherein, The black border display glass further comprises a third bonding layer, the third bonding layer is located between the first bonding layer and the second bonding layer and connected to the side surface of the functional reflective layer; The thickness of the third bonding layer is equal to the thickness of the functional reflective layer, and the sum of the areas of the third bonding layer and the functional reflective layer is equal to the area of the first bonding layer.

15. The black border display glass of claim 1, wherein, The black border display glass further comprises a heat insulation layer, the heat insulation layer is arranged on the second surface, the third surface, the fourth surface or embedded in the first bonding layer; The heat insulation layer is selected from at least one of a single silver nano coating, a double silver nano coating, a triple silver nano coating, a quadruple silver nano coating, an ITO nano coating, an FTO nano coating, and an infrared blocking micron coating, and the total solar energy transmittance of the black border display glass with the heat insulation layer is less than or equal to 55%.

16. The black matrix display glass according to claim 1, wherein The black border display glass further comprises an electric heating element and at least two busbars, the busbars are electrically connected to the electric heating element, and the electric heating element is arranged on the second surface, the third surface, the fourth surface or embedded in the first bonding layer. The electric heating element is 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 quintuple-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 grid, or a graphene heating sheet, which can enable the black border display glass to have a heating power density of at least 400 W / m 2 .

17. A black border display system characterized by comprising: The black border display system comprises a projection device and the black border display glass according to any one of claims 1-16, the projection device is directed towards the inner glass sheet, the projection device is used to emit projection light with a wavelength of 380-780 nm, the projection light contains at least 80% P-polarized light, and the projection light is incident on the display area at an incident angle of 65-75°. The projection light is reflected by the inner glass sheet to form a secondary image, and the projection light is reflected by the functional reflective layer to form a display image, and the ratio of the reflectivity of the functional reflective layer to the reflectivity of the inner glass sheet to the projection light is greater than or equal to 10.

18. The black border display system of claim 17, wherein, There is a deviation angle between the secondary image and the display image, and the deviation angle is less than or equal to 2.1′.

19. A vehicle characterized by comprising: The vehicle comprises a vehicle body and the black border display system according to claim 17 or 18, the black border display glass is mounted at an opening of the vehicle body, and the projection device is mounted inside the vehicle body.

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